[{"publication":"AIP Conference Proceedings","type":"conference","editor":[{"first_name":"Bogumil","full_name":"B. J. Linde, Bogumil","last_name":"B. J. Linde"},{"full_name":"Paczkowski, Jacek","last_name":"Paczkowski","first_name":"Jacek"},{"first_name":"Nikodem","last_name":"Ponikwicki","full_name":"Ponikwicki, Nikodem"}],"abstract":[{"lang":"eng","text":"Hydrothermal method enables to synthesize high quality piezoelectric materials. To shorten the reaction time and to get higher quality materials, we propose an ultrasonic irradiation to the solution during the hydrothermal method. We named it ultrasonic assisted hydrothermal method (UAHTM). We have synthesized lead-free piezoelectric material and PZT thin film and the effect of UAHTM have been confirmed. In this study, we tried to improve UAHTM. First, to generate powerful and stable ultrasonic irradiation at high temperature on UAHTM, we developed a new transducer using LiNbO3 single crystal. Second, to prevent contamination to the materials, A Teflon cover on the tip of transducer was attached."}],"status":"public","_id":"9785","department":[{"_id":"151"}],"user_id":"55222","keyword":["contamination","lead compounds","piezoelectric materials","piezoelectric thin films","piezoelectric transducers","ultrasonic effects"],"language":[{"iso":"eng"}],"quality_controlled":"1","issue":"1","year":"2012","page":"569-572","intvolume":"      1433","citation":{"ieee":"G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method,” in <i>AIP Conference Proceedings</i>, 2012, vol. 1433, no. 1, pp. 569–572.","chicago":"Isobe, Gaku, Ryo Ageba, Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted Hydrothermal Method.” In <i>AIP Conference Proceedings</i>, edited by Bogumil B. J. Linde, Jacek Paczkowski, and Nikodem Ponikwicki, 1433:569–72. AIP, 2012. <a href=\"https://doi.org/10.1063/1.3703251\">https://doi.org/10.1063/1.3703251</a>.","ama":"Isobe G, Ageba R, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method. In: B. J. Linde B, Paczkowski J, Ponikwicki N, eds. <i>AIP Conference Proceedings</i>. Vol 1433. AIP; 2012:569-572. doi:<a href=\"https://doi.org/10.1063/1.3703251\">10.1063/1.3703251</a>","mla":"Isobe, Gaku, et al. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted Hydrothermal Method.” <i>AIP Conference Proceedings</i>, edited by Bogumil B. J. Linde et al., vol. 1433, no. 1, AIP, 2012, pp. 569–72, doi:<a href=\"https://doi.org/10.1063/1.3703251\">10.1063/1.3703251</a>.","bibtex":"@inproceedings{Isobe_Ageba_Maeda_Bornmann_Hemsel_Morita_2012, title={Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method}, volume={1433}, DOI={<a href=\"https://doi.org/10.1063/1.3703251\">10.1063/1.3703251</a>}, number={1}, booktitle={AIP Conference Proceedings}, publisher={AIP}, author={Isobe, Gaku and Ageba, Ryo and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, editor={B. J. Linde, Bogumil and Paczkowski, Jacek and Ponikwicki, NikodemEditors}, year={2012}, pages={569–572} }","short":"G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, in: B. B. J. Linde, J. Paczkowski, N. Ponikwicki (Eds.), AIP Conference Proceedings, AIP, 2012, pp. 569–572.","apa":"Isobe, G., Ageba, R., Maeda, T., Bornmann, P., Hemsel, T., &#38; Morita, T. (2012). Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method. In B. B. J. Linde, J. Paczkowski, &#38; N. Ponikwicki (Eds.), <i>AIP Conference Proceedings</i> (Vol. 1433, pp. 569–572). AIP. <a href=\"https://doi.org/10.1063/1.3703251\">https://doi.org/10.1063/1.3703251</a>"},"publisher":"AIP","date_updated":"2022-01-06T07:04:20Z","volume":1433,"author":[{"first_name":"Gaku","last_name":"Isobe","full_name":"Isobe, Gaku"},{"first_name":"Ryo","full_name":"Ageba, Ryo","last_name":"Ageba"},{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"full_name":"Morita, Takeshi","last_name":"Morita","first_name":"Takeshi"}],"date_created":"2019-05-13T13:21:56Z","title":"Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method","doi":"10.1063/1.3703251"},{"_id":"9788","department":[{"_id":"151"}],"user_id":"55222","keyword":["crystallisation","hydrophones","piezoceramics","potassium compounds","powder technology","powders","sensors","sintering","sodium compounds","(K0.48Na0.52)NbO3","KNbO3 powder","NaNbO3 powder","crystallization","energy harvesting devices","g33 constant","hydrophone sensor","hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics","hydrothermal method","piezoelectric applications","sintering","Materials","Transducers"],"language":[{"iso":"eng"}],"publication":"Ultrasonics Symposium (IUS), 2012 IEEE International","type":"conference","abstract":[{"text":"A hydrothermal method utilizes a crystallization process in the solution so that the pure and high-quality powders can be realized. Sintering from the hydrothermal KNbO3 and NaNbO3 powders, a high-dense lead-free piezoelectric (K,Na)NbO3 ceramics could be obtained (density: 98.8\\%). Concerning about the g33 constant, high value as large as commercial PZT ceramics was measured. Therefore, the hydrothermal (K,Na)NbO3 ceramics is usable for the sensors and the energy harvesting devices. To demonstrate the (K,Na)NbO3 ceramics, a hydrophone sensor was fabricated and evaluated.","lang":"eng"}],"status":"public","date_updated":"2022-01-06T07:04:20Z","date_created":"2019-05-13T13:28:05Z","author":[{"first_name":"Takafumi","full_name":"Maeda, Takafumi","last_name":"Maeda"},{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"title":"Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics","doi":"10.1109/ULTSYM.2012.0048","publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","year":"2012","page":"194-195","citation":{"ama":"Maeda T, Bornmann P, Hemsel T, Morita T. Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics. In: <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>. ; 2012:194-195. doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0048\">10.1109/ULTSYM.2012.0048</a>","chicago":"Maeda, Takafumi, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Piezoelectric Applications of Hydrothermal Lead-Free (K0.48Na0.52)NbO3 Ceramics.” In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 194–95, 2012. <a href=\"https://doi.org/10.1109/ULTSYM.2012.0048\">https://doi.org/10.1109/ULTSYM.2012.0048</a>.","ieee":"T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics,” in <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 194–195.","mla":"Maeda, Takafumi, et al. “Piezoelectric Applications of Hydrothermal Lead-Free (K0.48Na0.52)NbO3 Ceramics.” <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 194–95, doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0048\">10.1109/ULTSYM.2012.0048</a>.","bibtex":"@inproceedings{Maeda_Bornmann_Hemsel_Morita_2012, title={Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics}, DOI={<a href=\"https://doi.org/10.1109/ULTSYM.2012.0048\">10.1109/ULTSYM.2012.0048</a>}, booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2012}, pages={194–195} }","short":"T. Maeda, P. Bornmann, T. Hemsel, T. Morita, in: Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 194–195.","apa":"Maeda, T., Bornmann, P., Hemsel, T., &#38; Morita, T. (2012). Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics. In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i> (pp. 194–195). <a href=\"https://doi.org/10.1109/ULTSYM.2012.0048\">https://doi.org/10.1109/ULTSYM.2012.0048</a>"}},{"doi":"10.1143/JJAP.51.09MD08","title":"Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders","date_created":"2019-05-13T13:29:10Z","author":[{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"volume":51,"publisher":"The Japan Society of Applied Physics","date_updated":"2022-01-06T07:04:20Z","citation":{"bibtex":"@article{Maeda_Hemsel_Morita_2012, title={Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders}, volume={51}, DOI={<a href=\"https://doi.org/10.1143/JJAP.51.09MD08\">10.1143/JJAP.51.09MD08</a>}, journal={Japanese Journal of Applied Physics}, publisher={The Japan Society of Applied Physics}, author={Maeda, Takafumi and Hemsel, Tobias and Morita, Takeshi}, year={2012}, pages={09MD08} }","mla":"Maeda, Takafumi, et al. “Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders.” <i>Japanese Journal of Applied Physics</i>, vol. 51, The Japan Society of Applied Physics, 2012, p. 09MD08, doi:<a href=\"https://doi.org/10.1143/JJAP.51.09MD08\">10.1143/JJAP.51.09MD08</a>.","short":"T. Maeda, T. Hemsel, T. Morita, Japanese Journal of Applied Physics 51 (2012) 09MD08.","apa":"Maeda, T., Hemsel, T., &#38; Morita, T. (2012). Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders. <i>Japanese Journal of Applied Physics</i>, <i>51</i>, 09MD08. <a href=\"https://doi.org/10.1143/JJAP.51.09MD08\">https://doi.org/10.1143/JJAP.51.09MD08</a>","ieee":"T. Maeda, T. Hemsel, and T. Morita, “Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders,” <i>Japanese Journal of Applied Physics</i>, vol. 51, p. 09MD08, 2012.","chicago":"Maeda, Takafumi, Tobias Hemsel, and Takeshi Morita. “Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders.” <i>Japanese Journal of Applied Physics</i> 51 (2012): 09MD08. <a href=\"https://doi.org/10.1143/JJAP.51.09MD08\">https://doi.org/10.1143/JJAP.51.09MD08</a>.","ama":"Maeda T, Hemsel T, Morita T. Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders. <i>Japanese Journal of Applied Physics</i>. 2012;51:09MD08. doi:<a href=\"https://doi.org/10.1143/JJAP.51.09MD08\">10.1143/JJAP.51.09MD08</a>"},"page":"09MD08","intvolume":"        51","year":"2012","quality_controlled":"1","language":[{"iso":"eng"}],"user_id":"55222","department":[{"_id":"151"}],"_id":"9789","status":"public","abstract":[{"lang":"eng","text":"[$Li_x(Na_0.52K_0.48)_1-x]NbO_3 (0 \\leq x \\leq 0.091)$ ceramics were synthesized using hydrothermal powders and the lithium doping content was controlled to optimize their piezoelectric properties. The raw KNbO$_3$ and NaNbO$_3$ powders were obtained separately by a hydrothermal method and LiNbO$_3$ powders were prepared by milling a commercial LiNbO$_3$ single crystal. These powders were mixed with ethanol at a molar ratio LiNbO$_3$: ($Na_0.52K_0.48$)NbO$_3 = x : 1-x$. The synthesized powders were sintered at 1060--1120 $\\,^{\\circ}$C for 2 h. We succeeded in obtaining highly dense [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$ ceramics using hydrothermal powder. The X-ray diffraction patterns revealed that the crystal phase changed from orthorhombic to tetragonal at around x = 0.06. At this morphotropic phase boundary (MPB), the c/a ratio changed from 1.016 to 1.024 and the highest piezoelectric constant was obtained with the chemical component of [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$. The obtained piezoelectric properties were as follows: $k_33 = 0.51, \\epsilon 33^T/ \\epsilon _0 = 836$ , $c_33^E = 46$ GPa, $d_33 = 203$ pC/N, and $T_c = 482 $\\,^{\\circ}$C$."}],"type":"journal_article","publication":"Japanese Journal of Applied Physics"},{"_id":"9806","department":[{"_id":"151"}],"user_id":"55222","keyword":["Piezoelectric Inertia Motors","Drive Signals","Stick-slip","Slip-slip"],"language":[{"iso":"eng"}],"publication":"ACTUATOR 2012 Conference Proceedings","type":"journal_article","abstract":[{"lang":"eng","text":"Piezoelectric inertia motors, also known as ``stick-slip-drives'', use the inertia of a body to drive it by means of a friction contact in small steps. While these steps normally involve stiction and sliding, the motors can also operate in ``slip-slip'' mode without any phase of static friction. In this contribution, a one degree of freedom model of an inertia motor driven by an ideal actuator is analysed. Start-up and constant velocity operation of the motor are investigated and appropriate quantities to compare ``stick-slip'' and ``slip-slip'' operation are determined. Different aspects such as velocity, uniformity of motion, load capacity, robustness, efficiency, and wear are considered. The analysis allows both modes to be applied advantageously in different applications and can widen the field of application of piezoelectric inertia motors. Motor designers are enabled to choose the appropriate mode of operation and the best drive parameters for their individual applications."}],"status":"public","date_updated":"2022-01-06T07:04:21Z","author":[{"last_name":"Hunstig","full_name":"Hunstig, Matthias","first_name":"Matthias"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel"},{"first_name":"Walter","last_name":"Sextro","id":"21220","full_name":"Sextro, Walter"}],"date_created":"2019-05-13T14:11:37Z","title":"Analysis of different operation modes for inertia motors","quality_controlled":"1","year":"2012","page":"761-764","citation":{"chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Analysis of Different Operation Modes for Inertia Motors.” <i>ACTUATOR 2012 Conference Proceedings</i>, 2012, 761–64.","ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “Analysis of different operation modes for inertia motors,” <i>ACTUATOR 2012 Conference Proceedings</i>, pp. 761–764, 2012.","ama":"Hunstig M, Hemsel T, Sextro W. Analysis of different operation modes for inertia motors. <i>ACTUATOR 2012 Conference Proceedings</i>. 2012:761-764.","bibtex":"@article{Hunstig_Hemsel_Sextro_2012, title={Analysis of different operation modes for inertia motors}, journal={ACTUATOR 2012 Conference Proceedings}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2012}, pages={761–764} }","mla":"Hunstig, Matthias, et al. “Analysis of Different Operation Modes for Inertia Motors.” <i>ACTUATOR 2012 Conference Proceedings</i>, 2012, pp. 761–64.","short":"M. Hunstig, T. Hemsel, W. Sextro, ACTUATOR 2012 Conference Proceedings (2012) 761–764.","apa":"Hunstig, M., Hemsel, T., &#38; Sextro, W. (2012). Analysis of different operation modes for inertia motors. <i>ACTUATOR 2012 Conference Proceedings</i>, 761–764."}},{"department":[{"_id":"151"}],"user_id":"55222","_id":"9765","language":[{"iso":"eng"}],"publication":"Key Engineering Materials","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"The multi-objective optimal design of a piezoelectric sandwich ultrasonic transducer is studied. The maximum vibration amplitude and the minimum electrical input power are considered as optimization objectives. Design variables involve continuous variables (dimensions of the transducer) and discrete variables (material types). Based on analytical models, the optimal design is formulated as a constrained multi-objective optimization problem. The optimization problem is then solved by using the elitist non-dominated sorting genetic algorithm (NSGA-II) and Pareto-optimal designs are obtained. The optimized results are analyzed and the preferred design is proposed. The optimization procedure presented in this contribution can be applied in multi-objective optimization problems of other piezoelectric transducers."}],"volume":"474 - 476","author":[{"full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel","first_name":"Tobias"},{"first_name":"Bo","full_name":"Fu, Bo","last_name":"Fu"},{"first_name":"Yi","last_name":"Jing","full_name":"Jing, Yi"},{"full_name":"Fu, Xuan","last_name":"Fu","first_name":"Xuan"}],"date_created":"2019-05-13T10:54:42Z","date_updated":"2022-01-06T07:04:19Z","publisher":"Trans Tech Publ","doi":"10.4028/www.scientific.net/KEM.474-476.1808","title":"Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm","quality_controlled":"1","page":"1808-1812","citation":{"ama":"Hemsel T, Fu B, Jing Y, Fu X. Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm. <i>Key Engineering Materials</i>. 2011;474-476:1808-1812. doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808\">10.4028/www.scientific.net/KEM.474-476.1808</a>","chicago":"Hemsel, Tobias, Bo Fu, Yi Jing, and Xuan Fu. “Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm.” <i>Key Engineering Materials</i> 474–476 (2011): 1808–12. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808\">https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808</a>.","ieee":"T. Hemsel, B. Fu, Y. Jing, and X. Fu, “Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm,” <i>Key Engineering Materials</i>, vol. 474–476, pp. 1808–1812, 2011.","apa":"Hemsel, T., Fu, B., Jing, Y., &#38; Fu, X. (2011). Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm. <i>Key Engineering Materials</i>, <i>474</i>–<i>476</i>, 1808–1812. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808\">https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808</a>","mla":"Hemsel, Tobias, et al. “Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm.” <i>Key Engineering Materials</i>, vol. 474–476, Trans Tech Publ, 2011, pp. 1808–12, doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808\">10.4028/www.scientific.net/KEM.474-476.1808</a>.","bibtex":"@article{Hemsel_Fu_Jing_Fu_2011, title={Multi-Objective Optimization of a Piezoelectric Sandwich Ultrasonic Transducer by Using Elitist Non-Dominated Sorting Genetic Algorithm}, volume={474–476}, DOI={<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.474-476.1808\">10.4028/www.scientific.net/KEM.474-476.1808</a>}, journal={Key Engineering Materials}, publisher={Trans Tech Publ}, author={Hemsel, Tobias and Fu, Bo and Jing, Yi and Fu, Xuan}, year={2011}, pages={1808–1812} }","short":"T. Hemsel, B. Fu, Y. Jing, X. Fu, Key Engineering Materials 474–476 (2011) 1808–1812."},"year":"2011"},{"_id":"9767","department":[{"_id":"151"}],"user_id":"55222","keyword":["dielectric polarisation","piezoceramics","piezoelectric actuators"],"language":[{"iso":"eng"}],"publication":"AIP Conference Proceedings","type":"journal_article","abstract":[{"lang":"eng","text":"The paper presents the results of numerical and experimental investigation of cylindrical piezoelectric actuator used for achieving independent three degrees of freedom oscillations of the contact point. The design of actuator based on a hollow piezoelectric cylinder mounted on a metal rod. The piezoceramic cylinder has a radial polarization and special configuration of the electrodes that cover inner and outer surface of the cylinder. The main advantage of actuator's design is that solid metallic rod operates as a part of inner electrode of the cylinder and a stator of actuator. The geometry of piezoelectric actuator was adopted to reach resonance of oscillations for the first longitudinal mode and the third flexural mode at same frequency. The actuator is designed to move positioned object through contact point which is located on the top of the rod. The optimal topology of electrodes was found to achieve longitudinal and flexural oscillations of the actuator in two perpendicular planes. Three degrees of freedom of the positioning object can be achieved and control of the system can be implemented by applying different excitation schemes and regimes. The numerical simulation and experimental study of piezoelectric actuator was performed. Impedance of actuator was analyzed under different excitation regimes. The results of numerical modeling and experimental study were compared. Recommendations for the further development of this type of actuator are given."}],"status":"public","publisher":"AIP","date_updated":"2022-01-06T07:04:19Z","volume":1433,"date_created":"2019-05-13T10:56:30Z","author":[{"first_name":"Raimundas","last_name":"Lucinskis","full_name":"Lucinskis, Raimundas"},{"first_name":"Dalius","full_name":"Mazeika, Dalius","last_name":"Mazeika"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"last_name":"Bansevicius","full_name":"Bansevicius, Ramutis","first_name":"Ramutis"}],"title":"Multi-DOF cylindrical piezoelectric actuator with radial polarization","doi":"10.1063/1.3703277","quality_controlled":"1","issue":"1","year":"2011","page":"693-696","intvolume":"      1433","citation":{"chicago":"Lucinskis, Raimundas, Dalius Mazeika, Tobias Hemsel, and Ramutis Bansevicius. “Multi-DOF Cylindrical Piezoelectric Actuator with Radial Polarization.” <i>AIP Conference Proceedings</i> 1433, no. 1 (2011): 693–96. <a href=\"https://doi.org/10.1063/1.3703277\">https://doi.org/10.1063/1.3703277</a>.","ieee":"R. Lucinskis, D. Mazeika, T. Hemsel, and R. Bansevicius, “Multi-DOF cylindrical piezoelectric actuator with radial polarization,” <i>AIP Conference Proceedings</i>, vol. 1433, no. 1, pp. 693–696, 2011.","ama":"Lucinskis R, Mazeika D, Hemsel T, Bansevicius R. Multi-DOF cylindrical piezoelectric actuator with radial polarization. <i>AIP Conference Proceedings</i>. 2011;1433(1):693-696. doi:<a href=\"https://doi.org/10.1063/1.3703277\">10.1063/1.3703277</a>","mla":"Lucinskis, Raimundas, et al. “Multi-DOF Cylindrical Piezoelectric Actuator with Radial Polarization.” <i>AIP Conference Proceedings</i>, vol. 1433, no. 1, AIP, 2011, pp. 693–96, doi:<a href=\"https://doi.org/10.1063/1.3703277\">10.1063/1.3703277</a>.","bibtex":"@article{Lucinskis_Mazeika_Hemsel_Bansevicius_2011, title={Multi-DOF cylindrical piezoelectric actuator with radial polarization}, volume={1433}, DOI={<a href=\"https://doi.org/10.1063/1.3703277\">10.1063/1.3703277</a>}, number={1}, journal={AIP Conference Proceedings}, publisher={AIP}, author={Lucinskis, Raimundas and Mazeika, Dalius and Hemsel, Tobias and Bansevicius, Ramutis}, year={2011}, pages={693–696} }","short":"R. Lucinskis, D. Mazeika, T. Hemsel, R. Bansevicius, AIP Conference Proceedings 1433 (2011) 693–696.","apa":"Lucinskis, R., Mazeika, D., Hemsel, T., &#38; Bansevicius, R. (2011). Multi-DOF cylindrical piezoelectric actuator with radial polarization. <i>AIP Conference Proceedings</i>, <i>1433</i>(1), 693–696. <a href=\"https://doi.org/10.1063/1.3703277\">https://doi.org/10.1063/1.3703277</a>"}},{"year":"2011","citation":{"apa":"Maeda, T., Hemsel, T., &#38; Morita, T. (2011). Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics. <i>Japanese Journal of Applied Physics</i>, <i>50</i>, 07HC01.","short":"T. Maeda, T. Hemsel, T. Morita, Japanese Journal of Applied Physics 50 (2011) 07HC01.","bibtex":"@article{Maeda_Hemsel_Morita_2011, title={Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics}, volume={50}, journal={Japanese Journal of Applied Physics}, publisher={The Japan Society of Applied Physics}, author={Maeda, Takafumi and Hemsel, Tobias and Morita, Takeshi}, year={2011}, pages={07HC01} }","mla":"Maeda, Takafumi, et al. “Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics.” <i>Japanese Journal of Applied Physics</i>, vol. 50, The Japan Society of Applied Physics, 2011, p. 07HC01.","ieee":"T. Maeda, T. Hemsel, and T. Morita, “Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics,” <i>Japanese Journal of Applied Physics</i>, vol. 50, p. 07HC01, 2011.","chicago":"Maeda, Takafumi, Tobias Hemsel, and Takeshi Morita. “Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics.” <i>Japanese Journal of Applied Physics</i> 50 (2011): 07HC01.","ama":"Maeda T, Hemsel T, Morita T. Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics. <i>Japanese Journal of Applied Physics</i>. 2011;50:07HC01."},"page":"07HC01","intvolume":"        50","quality_controlled":"1","title":"Improved Process for Hydrothermal Lead-Free Piezoelectric Powders and Performances of Sintered (K0.48Na0.52)NbO3 Ceramics","date_updated":"2022-01-06T07:04:19Z","publisher":"The Japan Society of Applied Physics","date_created":"2019-05-13T11:00:23Z","author":[{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"volume":50,"abstract":[{"text":"In this study, we report some improvements in a hydrothermal method for lead-free piezoelectric powders and the performance of the sintered (K$_{0.48}$Na$_{0.52}$)NbO$_{3}$ ceramics. To increase the obtained powder weight per source solution volume, the hydrothermal reaction conditions were modified. This improvement is important for mass production; however, it resulted in a larger particle size dispersion. Therefore, we examined to introduced the ball milling process that is useful for dense (K$_{0.48}$Na$_{0.52}$)NbO$_{3}$ ceramics. When a large amount of powder was obtained, it took a long time to eliminate the residual alkaline ions in the hydrothermal powders by a washing process. Therefore, a neutralization was conducted in the powder washing process. Using this powder, a solid solution of (K,Na)NbO$_{3}$ceramics was synthesized. The relative density was successfully increased. Concerning the electrical properties, the relative permittivity was improved, and the piezoelectric constant d$_{33}$ was also increased from 114 to 130 pC/N.","lang":"eng"}],"status":"public","type":"journal_article","publication":"Japanese Journal of Applied Physics","language":[{"iso":"eng"}],"_id":"9769","user_id":"55222","department":[{"_id":"151"}]},{"status":"public","publication":"Proceedings of Symposium on Ultrasonic Electronics","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"151"}],"user_id":"55222","_id":"9877","intvolume":"        32","page":"19-20","citation":{"mla":"Isobe, Gaku, et al. “High Temperature Tolerant Transducer for Ultrasonic Assisted Hydrothermal Method.” <i>Proceedings of Symposium on Ultrasonic Electronics</i>, vol. 32, Trans Tech Publ, 2011, pp. 19–20.","bibtex":"@article{Isobe_Bornmann_Hemsel_Morita_2011, title={High temperature tolerant transducer for Ultrasonic Assisted Hydrothermal Method}, volume={32}, journal={Proceedings of Symposium on Ultrasonic Electronics}, publisher={Trans Tech Publ}, author={Isobe, Gaku and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2011}, pages={19–20} }","short":"G. Isobe, P. Bornmann, T. Hemsel, T. Morita, Proceedings of Symposium on Ultrasonic Electronics 32 (2011) 19–20.","apa":"Isobe, G., Bornmann, P., Hemsel, T., &#38; Morita, T. (2011). High temperature tolerant transducer for Ultrasonic Assisted Hydrothermal Method. <i>Proceedings of Symposium on Ultrasonic Electronics</i>, <i>32</i>, 19–20.","ama":"Isobe G, Bornmann P, Hemsel T, Morita T. High temperature tolerant transducer for Ultrasonic Assisted Hydrothermal Method. <i>Proceedings of Symposium on Ultrasonic Electronics</i>. 2011;32:19-20.","ieee":"G. Isobe, P. Bornmann, T. Hemsel, and T. Morita, “High temperature tolerant transducer for Ultrasonic Assisted Hydrothermal Method,” <i>Proceedings of Symposium on Ultrasonic Electronics</i>, vol. 32, pp. 19–20, 2011.","chicago":"Isobe, Gaku, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “High Temperature Tolerant Transducer for Ultrasonic Assisted Hydrothermal Method.” <i>Proceedings of Symposium on Ultrasonic Electronics</i> 32 (2011): 19–20."},"year":"2011","quality_controlled":"1","title":"High temperature tolerant transducer for Ultrasonic Assisted Hydrothermal Method","volume":32,"author":[{"first_name":"Gaku","full_name":"Isobe, Gaku","last_name":"Isobe"},{"full_name":"Bornmann, Peter","last_name":"Bornmann","first_name":"Peter"},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"date_created":"2019-05-20T13:09:04Z","publisher":"Trans Tech Publ","date_updated":"2019-09-16T11:31:38Z"},{"year":"2011","application_date":"2010-08-10","citation":{"ama":"Sextro W, Hunstig M, Bornmann P, Hemsel T. Patent DE10201003395: Anordnung und Verfahren zur mehrdimensionalen Messung von Schwingungen eines Objekts. . Published online 2011.","ieee":"W. Sextro, M. Hunstig, P. Bornmann, and T. Hemsel, “Patent DE10201003395: Anordnung und Verfahren zur mehrdimensionalen Messung von Schwingungen eines Objekts. .” 2011.","chicago":"Sextro, Walter, Matthias Hunstig, Peter Bornmann, and Tobias Hemsel. “Patent DE10201003395: Anordnung Und Verfahren Zur Mehrdimensionalen Messung von Schwingungen Eines Objekts. ,” 2011.","bibtex":"@article{Sextro_Hunstig_Bornmann_Hemsel_2011, title={Patent DE10201003395: Anordnung und Verfahren zur mehrdimensionalen Messung von Schwingungen eines Objekts. }, author={Sextro, Walter and Hunstig, Matthias and Bornmann, Peter and Hemsel, Tobias}, year={2011} }","short":"W. Sextro, M. Hunstig, P. Bornmann, T. Hemsel, (2011).","mla":"Sextro, Walter, et al. <i>Patent DE10201003395: Anordnung Und Verfahren Zur Mehrdimensionalen Messung von Schwingungen Eines Objekts. </i>. 2011.","apa":"Sextro, W., Hunstig, M., Bornmann, P., &#38; Hemsel, T. (2011). <i>Patent DE10201003395: Anordnung und Verfahren zur mehrdimensionalen Messung von Schwingungen eines Objekts. </i>."},"ipn":"DE102010033951B4","title":"Patent DE10201003395: Anordnung und Verfahren zur mehrdimensionalen Messung von Schwingungen eines Objekts. ","application_number":"DE102010033951A1 ","ipc":"G01H9/00","date_updated":"2022-01-06T12:23:38Z","author":[{"id":"21220","full_name":"Sextro, Walter","last_name":"Sextro","first_name":"Walter"},{"last_name":"Hunstig","full_name":"Hunstig, Matthias","first_name":"Matthias"},{"first_name":"Peter","last_name":"Bornmann","full_name":"Bornmann, Peter"},{"first_name":"Tobias","last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias"}],"date_created":"2019-05-13T13:30:26Z","abstract":[{"lang":"eng","text":"Es wird eine Anordnung zur mehrdimensionalen Messung von Schwingungen eines Objektes vorgeschlagen, umfassend ein Vibrometer und eine erste Ablenkeinheit, mittels welcher der Messstrahl des Vibrometers in wenigstens zwei erste Raumrichtungen ablenkbar ist, sowie wenigstens eine zweite Ablenkeinheit, mittels welcher der aus einer der wenigstens zwei ersten Raumrichtungen auf eine zweite Ablenkeinheit eintreffende Messstrahl derart ablenkbar ist, dass ein Messpunkt des Objekts aus einer ersten Raumrichtung und wenigstens einer zweiten Raumrichtung oder wenigstens zwei zweiten Raumrichtungen damit erfassbar ist. Bei dem zum Betrieb der Anordnung vorgesehenen Verfahren wird der Messstrahl eines Vibrometers in wenigstens zwei erste Raumrichtungen abgelenkt, woraufhin wenigstens ein Messstrahl einer ersten Raumrichtung ein zweites Mal derart abgelenkt wird, dass ein Messpunkt des Objekts aus einer ersten Raumrichtung und wenigstens einer zweiten Raumrichtung oder wenigstens zwei zweiten Raumrichtungen erfasst wird, insbesondere so dass die zu untersuchenden Bewegungskomponenten in den Messsignalen, welche entlang der ersten und zweiten Raumrichtungen gewonnen werden, enthalten sind. The arrangement has a first deflecting unit (3) for deflecting a measuring beam of a vibrometer (2) in spatial directions (4-6, 4-6). Second and third deflecting units (7, 8) deflect the beam arriving from one of the spatial directions such that a measuring point (9) of an object (1) is detectable with the beam from the spatial direction or the spatial directions. The first deflecting unit is designed as a scanning unit, where the measuring point is detected by the scanning unit. A measuring instrument measures focus quality and is connected to actuators for adjustment of the focus quality. An independent claim is also included for a method for multidimensional measurement of oscillations of an object."}],"status":"public","type":"patent","_id":"9790","publication_date":"2019-05-29","department":[{"_id":"151"}],"user_id":"210"},{"issue":"4","publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","citation":{"apa":"Ageba, R., Kadota, Y., Maeda, T., Takiguchi, N., Morita, T., Ishikawa, M., … Hemsel, T. (2010). Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 918–923. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>","bibtex":"@article{Ageba_Kadota_Maeda_Takiguchi_Morita_Ishikawa_Bornmann_Hemsel_2010, title={Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Ageba, Ryo and Kadota, Yoichi and Maeda, Takafumi and Takiguchi, Norihito and Morita, Takeshi and Ishikawa, Mutsuo and Bornmann, Peter and Hemsel, Tobias}, year={2010}, pages={918–923} }","mla":"Ageba, Ryo, et al. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 918–23, doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>.","short":"R. Ageba, Y. Kadota, T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, P. Bornmann, T. Hemsel, Journal of Korean Physical Society 57 (2010) 918–923.","ama":"Ageba R, Kadota Y, Maeda T, et al. Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>. 2010;57(4):918-923. doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>","ieee":"R. Ageba <i>et al.</i>, “Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 918–923, 2010.","chicago":"Ageba, Ryo, Yoichi Kadota, Takafumi Maeda, Norihito Takiguchi, Takeshi Morita, Mutsuo Ishikawa, Peter Bornmann, and Tobias Hemsel. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 918–23. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>."},"intvolume":"        57","page":"918-923","year":"2010","author":[{"first_name":"Ryo","full_name":"Ageba, Ryo","last_name":"Ageba"},{"first_name":"Yoichi","full_name":"Kadota, Yoichi","last_name":"Kadota"},{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"full_name":"Takiguchi, Norihito","last_name":"Takiguchi","first_name":"Norihito"},{"full_name":"Morita, Takeshi","last_name":"Morita","first_name":"Takeshi"},{"full_name":"Ishikawa, Mutsuo","last_name":"Ishikawa","first_name":"Mutsuo"},{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"first_name":"Tobias","last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias"}],"date_created":"2019-05-13T09:35:33Z","volume":57,"date_updated":"2022-01-06T07:04:19Z","doi":"10.3938/jkps.57.918","title":"Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis","type":"journal_article","publication":"Journal of Korean Physical Society","status":"public","abstract":[{"lang":"eng","text":"The hydrothermal method enables the production of high-quality piezoelectric materials. In this study, we propose to irradiate the reaction solutions with ultrasonic power during the hydrothermal method to obtain a shorter reaction time and a smooth film surface. A high-pressure reaction container for the ultrasonic transducer was newly developed, and the ultrasonically-assisted hydrothermal method was examined by using this container. The effect of ultrasonic assist on the synthesis of lead-zirconate-titanate (PZT) thin films and (K,Na)NbO$_{3}$ powders was verified. Thicker PZT film, thickness around 10 ${\\mu}$m, could be obtained in one process, and (K,Na)NbO$_{3}$ powder was synthesized in half the previous reaction time."}],"user_id":"55222","department":[{"_id":"151"}],"_id":"9743","language":[{"iso":"eng"}],"keyword":["Hydrothermal method","High-power ultrasonic","PZT thin film","Lead-free piezoelectric materials"]},{"doi":"10.3938/jkps.57.1122","date_updated":"2022-01-06T07:04:19Z","author":[{"full_name":"Bornmann, Peter","last_name":"Bornmann","first_name":"Peter"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"first_name":"Walter","full_name":"Littmann, Walter","last_name":"Littmann"},{"first_name":"Ryo","full_name":"Ageba, Ryo","last_name":"Ageba"},{"full_name":"Kadota, Yoishi","last_name":"Kadota","first_name":"Yoishi"},{"first_name":"Takeshi","last_name":"Morita","full_name":"Morita, Takeshi"}],"volume":57,"citation":{"ama":"Bornmann P, Hemsel T, Littmann W, Ageba R, Kadota Y, Morita T. Ultrasonic Transducer for the Hydrothermal Method. <i>Journal of Korean Physical Society</i>. 2010;57(4):1122. doi:<a href=\"https://doi.org/10.3938/jkps.57.1122\">10.3938/jkps.57.1122</a>","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Littmann, Ryo Ageba, Yoishi Kadota, and Takeshi Morita. “Ultrasonic Transducer for the Hydrothermal Method.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 1122. <a href=\"https://doi.org/10.3938/jkps.57.1122\">https://doi.org/10.3938/jkps.57.1122</a>.","ieee":"P. Bornmann, T. Hemsel, W. Littmann, R. Ageba, Y. Kadota, and T. Morita, “Ultrasonic Transducer for the Hydrothermal Method,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, p. 1122, 2010.","apa":"Bornmann, P., Hemsel, T., Littmann, W., Ageba, R., Kadota, Y., &#38; Morita, T. (2010). Ultrasonic Transducer for the Hydrothermal Method. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 1122. <a href=\"https://doi.org/10.3938/jkps.57.1122\">https://doi.org/10.3938/jkps.57.1122</a>","mla":"Bornmann, Peter, et al. “Ultrasonic Transducer for the Hydrothermal Method.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, p. 1122, doi:<a href=\"https://doi.org/10.3938/jkps.57.1122\">10.3938/jkps.57.1122</a>.","bibtex":"@article{Bornmann_Hemsel_Littmann_Ageba_Kadota_Morita_2010, title={Ultrasonic Transducer for the Hydrothermal Method}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.1122\">10.3938/jkps.57.1122</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Bornmann, Peter and Hemsel, Tobias and Littmann, Walter and Ageba, Ryo and Kadota, Yoishi and Morita, Takeshi}, year={2010}, pages={1122} }","short":"P. Bornmann, T. Hemsel, W. Littmann, R. Ageba, Y. Kadota, T. Morita, Journal of Korean Physical Society 57 (2010) 1122."},"page":"1122","intvolume":"        57","publication_identifier":{"issn":["1948-5719"]},"_id":"9744","user_id":"55222","department":[{"_id":"151"}],"status":"public","type":"journal_article","title":"Ultrasonic Transducer for the Hydrothermal Method","date_created":"2019-05-13T09:37:56Z","year":"2010","quality_controlled":"1","issue":"4","keyword":["High-temperature transducer","Hydrothermal method","Lithium-niobate transducer"],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Direct ultrasound irradiation is advantageous to increase the efficiency of the hydrothermal method which can be used for the production of piezoelectric thin films and lead free piezoelectric ceramics. To apply ultrasound directly to the process transducer prototypes were developed regarding the boundary conditions of the hydrothermal method. LiNbO$_{3}$ and PIC 181 were proven as feasible materials for high temperature resistant transducers ($\\geq 200^\\circ C$). Resistance of the transducers horn against the corrosive mineralizer was achieved by using Hastelloy C-22. The efficiency of the ultrasound assisted hydrothermal method depends on the generated sound field. Impedance and sound field measurements have shown that the sound field depends on the filling level and the position and design of the transducer."}],"publication":"Journal of Korean Physical Society"},{"issue":"4","quality_controlled":"1","year":"2010","date_created":"2019-05-13T09:40:42Z","title":"Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods","publication":"Journal of Korean Physical Society","abstract":[{"text":"In the modeling of piezoelectric Langevin transducers using usual transfer matrix methods, some simplifications have been adopted. This leads to reduction of the model quality. A mixed transfer matrix method is employed in the modeling of Langevin transducers, where the pre-stressed bolt is modeled as a separate four-pole element, which is connected to other elements in parallel. Based on the mixed transfer matrix method, the four (six)-pole element description of the piezoelectric Langevin transducer is built up and the total transfer matrix relation is derived. The resonance frequencies of the transducer are calculated and then measured using the impedance analyzer (HP4192). Experimental result shows that the mixed transfer matrix method has better modeling quality than the usual transfer matrix method for the vibration analysis of piezoelectric Langevin transducers.","lang":"eng"}],"language":[{"iso":"eng"}],"keyword":["Piezoelectric langevin transducer","Transfer matrix method","Four (six)-pole element description","Pre-stressed bolt"],"publication_identifier":{"issn":["1948-5719"]},"citation":{"chicago":"Fu, Bo, Chao Li, Jianming Zhang, Zhenwei Huang, and Tobias Hemsel. “Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 929. <a href=\"https://doi.org/10.3938/jkps.57.929\">https://doi.org/10.3938/jkps.57.929</a>.","ieee":"B. Fu, C. Li, J. Zhang, Z. Huang, and T. Hemsel, “Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, p. 929, 2010.","ama":"Fu B, Li C, Zhang J, Huang Z, Hemsel T. Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods. <i>Journal of Korean Physical Society</i>. 2010;57(4):929. doi:<a href=\"https://doi.org/10.3938/jkps.57.929\">10.3938/jkps.57.929</a>","apa":"Fu, B., Li, C., Zhang, J., Huang, Z., &#38; Hemsel, T. (2010). Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 929. <a href=\"https://doi.org/10.3938/jkps.57.929\">https://doi.org/10.3938/jkps.57.929</a>","bibtex":"@article{Fu_Li_Zhang_Huang_Hemsel_2010, title={Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.929\">10.3938/jkps.57.929</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Fu, Bo and Li, Chao and Zhang, Jianming and Huang, Zhenwei and Hemsel, Tobias}, year={2010}, pages={929} }","mla":"Fu, Bo, et al. “Modeling of Piezoelectric Langevin Transducers by Using Mixed Transfer Matrix Methods.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, p. 929, doi:<a href=\"https://doi.org/10.3938/jkps.57.929\">10.3938/jkps.57.929</a>.","short":"B. Fu, C. Li, J. Zhang, Z. Huang, T. Hemsel, Journal of Korean Physical Society 57 (2010) 929."},"page":"929","intvolume":"        57","author":[{"full_name":"Fu, Bo","last_name":"Fu","first_name":"Bo"},{"first_name":"Chao","full_name":"Li, Chao","last_name":"Li"},{"first_name":"Jianming","full_name":"Zhang, Jianming","last_name":"Zhang"},{"first_name":"Zhenwei","last_name":"Huang","full_name":"Huang, Zhenwei"},{"full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel","first_name":"Tobias"}],"volume":57,"date_updated":"2022-01-06T07:04:19Z","doi":"10.3938/jkps.57.929","type":"journal_article","status":"public","user_id":"55222","department":[{"_id":"151"}],"_id":"9745"},{"keyword":["Bolted Langevin transducer","Optimum placement of piezoelectric ceramics"],"language":[{"iso":"eng"}],"_id":"9749","user_id":"55222","department":[{"_id":"151"}],"abstract":[{"lang":"eng","text":"Piezoelectric materials find wide application in technical systems. Most often, a combination of piezoelectric and other materials is advantageous. The position and the amount of the piezoelectric material within the overall system depends on various aspects like maximum mechanical output to the load, maximum electromechanical efficiency of the system, maximum utilization of the piezoelectric material, minimum self-heating of the piezoelectric material, and controllability of the system, which might be key aspects for the optimisation of the system design. For a composite longitudinal vibrator (bolted Langevin transducer), which is a base for many technical applications, this contribution shows in detail, how above mentioned aspects depend on the position and volume of the piezoelectric material related to the mode shape."}],"status":"public","type":"journal_article","publication":"Journal of Korean Physical Society","title":"Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers","doi":"10.3938/jkps.57.933","date_updated":"2022-01-06T07:04:19Z","author":[{"first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210"},{"first_name":"Ernst Günther","full_name":"Lierk, Ernst Günther","last_name":"Lierk"},{"last_name":"Littmann","full_name":"Littmann, Walter","first_name":"Walter"},{"full_name":"Morita, Takeshi","last_name":"Morita","first_name":"Takeshi"}],"date_created":"2019-05-13T09:56:22Z","volume":57,"year":"2010","citation":{"apa":"Hemsel, T., Lierk, E. G., Littmann, W., &#38; Morita, T. (2010). Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 933–937. <a href=\"https://doi.org/10.3938/jkps.57.933\">https://doi.org/10.3938/jkps.57.933</a>","bibtex":"@article{Hemsel_Lierk_Littmann_Morita_2010, title={Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.933\">10.3938/jkps.57.933</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Hemsel, Tobias and Lierk, Ernst Günther and Littmann, Walter and Morita, Takeshi}, year={2010}, pages={933–937} }","short":"T. Hemsel, E.G. Lierk, W. Littmann, T. Morita, Journal of Korean Physical Society 57 (2010) 933–937.","mla":"Hemsel, Tobias, et al. “Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 933–37, doi:<a href=\"https://doi.org/10.3938/jkps.57.933\">10.3938/jkps.57.933</a>.","ama":"Hemsel T, Lierk EG, Littmann W, Morita T. Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers. <i>Journal of Korean Physical Society</i>. 2010;57(4):933-937. doi:<a href=\"https://doi.org/10.3938/jkps.57.933\">10.3938/jkps.57.933</a>","chicago":"Hemsel, Tobias, Ernst Günther Lierk, Walter Littmann, and Takeshi Morita. “Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 933–37. <a href=\"https://doi.org/10.3938/jkps.57.933\">https://doi.org/10.3938/jkps.57.933</a>.","ieee":"T. Hemsel, E. G. Lierk, W. Littmann, and T. Morita, “Various Aspects of the Placement of a Piezoelectric Material in Composite Actuators, Motors, and Transducers,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 933–937, 2010."},"intvolume":"        57","page":"933-937","publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","issue":"4"},{"language":[{"iso":"eng"}],"_id":"9751","department":[{"_id":"151"}],"user_id":"55222","abstract":[{"lang":"eng","text":"Piezoelectric inertia motors have a simple construction and are controlled by a single driving signal. This allows for miniaturization and low cost production. One of the main questions to be answered during the design process of a piezoelectric inertia motor is which electrical excitation signal yields optimum motor characteristics. Three signals and their variants are widely used in literature: sawtooth, parabolic and cycloidic signals. It can be shown that neither of these can drive the motor at its maximum possible velocity in non-resonant operation. Within this paper we propose to use a rigid body model of a simple inertia motor to predict the motor characteristics depending on the movement pattern of the driving element. Advantages and disadvantages of three different drive signals that maximize the motor velocity are discussed."}],"status":"public","publication":"Journal of Korean Physical Society","type":"journal_article","title":"Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors","doi":"10.3938/jkps.57.938","date_updated":"2022-01-06T07:04:19Z","volume":57,"author":[{"first_name":"Matthias","full_name":"Hunstig, Matthias","last_name":"Hunstig"},{"first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210"}],"date_created":"2019-05-13T10:03:06Z","year":"2010","page":"938-941","intvolume":"        57","citation":{"ieee":"M. Hunstig and T. Hemsel, “Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 938–941, 2010.","chicago":"Hunstig, Matthias, and Tobias Hemsel. “Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 938–41. <a href=\"https://doi.org/10.3938/jkps.57.938\">https://doi.org/10.3938/jkps.57.938</a>.","ama":"Hunstig M, Hemsel T. Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors. <i>Journal of Korean Physical Society</i>. 2010;57(4):938-941. doi:<a href=\"https://doi.org/10.3938/jkps.57.938\">10.3938/jkps.57.938</a>","mla":"Hunstig, Matthias, and Tobias Hemsel. “Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 938–41, doi:<a href=\"https://doi.org/10.3938/jkps.57.938\">10.3938/jkps.57.938</a>.","bibtex":"@article{Hunstig_Hemsel_2010, title={Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.938\">10.3938/jkps.57.938</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Hunstig, Matthias and Hemsel, Tobias}, year={2010}, pages={938–941} }","short":"M. Hunstig, T. Hemsel, Journal of Korean Physical Society 57 (2010) 938–941.","apa":"Hunstig, M., &#38; Hemsel, T. (2010). Drive Signals for Maximizing the Velocity of Piezoelectric Inertia Motors. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 938–941. <a href=\"https://doi.org/10.3938/jkps.57.938\">https://doi.org/10.3938/jkps.57.938</a>"},"publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","issue":"4"},{"language":[{"iso":"eng"}],"_id":"9752","user_id":"55222","department":[{"_id":"151"}],"abstract":[{"lang":"eng","text":"Piezoelectric inertia motors make use of the inertia of a slider to drive the slider by friction contact in a series of small steps which are generally composed of a stick phase and a slip phase. If the best electrical drive signal for the piezoelectric actuator in an inertia motor is to be determined, its dynamical behaviour must be known. A classic dynamic lumped parameter model for piezoelectric actuators is valid only in resonance and, therefore, is not suitable for modelling the actuator in an inertia motor. A reduced dynamic model is used instead. Its parameters are identified using a step response measurement. This model is used to predict the movement of the actuator in response to a velocity-optimized signal introduced in a separate contribution. Results show that the model cannot represent the dynamical characteristics of the actuator completely. For determining voltage signals that let piezoelectric actuators follow a calculated movement pattern exactly, the model can, therefore, only be used with limitations."}],"status":"public","type":"journal_article","publication":"Journal of Korean Physical Society","title":"Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor","doi":"10.3938/jkps.57.952","date_updated":"2022-01-06T07:04:19Z","date_created":"2019-05-13T10:04:13Z","author":[{"first_name":"Matthias","last_name":"Hunstig","full_name":"Hunstig, Matthias"},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"}],"volume":57,"year":"2010","citation":{"ieee":"M. Hunstig and T. Hemsel, “Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 952–954, 2010.","chicago":"Hunstig, Matthias, and Tobias Hemsel. “Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 952–54. <a href=\"https://doi.org/10.3938/jkps.57.952\">https://doi.org/10.3938/jkps.57.952</a>.","ama":"Hunstig M, Hemsel T. Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor. <i>Journal of Korean Physical Society</i>. 2010;57(4):952-954. doi:<a href=\"https://doi.org/10.3938/jkps.57.952\">10.3938/jkps.57.952</a>","bibtex":"@article{Hunstig_Hemsel_2010, title={Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.952\">10.3938/jkps.57.952</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Hunstig, Matthias and Hemsel, Tobias}, year={2010}, pages={952–954} }","short":"M. Hunstig, T. Hemsel, Journal of Korean Physical Society 57 (2010) 952–954.","mla":"Hunstig, Matthias, and Tobias Hemsel. “Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 952–54, doi:<a href=\"https://doi.org/10.3938/jkps.57.952\">10.3938/jkps.57.952</a>.","apa":"Hunstig, M., &#38; Hemsel, T. (2010). Parameter Identification and Model Validation for the Piezoelectric Actuator in an Inertia Motor. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 952–954. <a href=\"https://doi.org/10.3938/jkps.57.952\">https://doi.org/10.3938/jkps.57.952</a>"},"page":"952-954","intvolume":"        57","quality_controlled":"1","publication_identifier":{"issn":["1948-5719"]},"issue":"4"},{"publication_identifier":{"issn":["0924-4247"]},"citation":{"ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “Anregungskonzepte und Modellierung piezoelektrischer Trägheitsmotoren,” in <i>7. Paderborner Workshop Entwurf mechatronischer Systeme</i>, 2010, vol. 272, pp. 129–141.","chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Anregungskonzepte Und Modellierung Piezoelektrischer Trägheitsmotoren.” In <i>7. Paderborner Workshop Entwurf Mechatronischer Systeme</i>, edited by Jürgen Gausemeier, Franz Rammig, Wilhelm Schäfer, and Ansgar Trächtler, 272:129–41. HNI-Verlagsschriftenreihe. Paderborn: Heinz Nixdorf Institut, Universität Paderborn, 2010.","ama":"Hunstig M, Hemsel T, Sextro W. Anregungskonzepte und Modellierung piezoelektrischer Trägheitsmotoren. In: Gausemeier J, Rammig F, Schäfer W, Trächtler A, eds. <i>7. Paderborner Workshop Entwurf Mechatronischer Systeme</i>. Vol 272. HNI-Verlagsschriftenreihe. Paderborn: Heinz Nixdorf Institut, Universität Paderborn; 2010:129-141.","apa":"Hunstig, M., Hemsel, T., &#38; Sextro, W. (2010). Anregungskonzepte und Modellierung piezoelektrischer Trägheitsmotoren. In J. Gausemeier, F. Rammig, W. Schäfer, &#38; A. Trächtler (Eds.), <i>7. Paderborner Workshop Entwurf mechatronischer Systeme</i> (Vol. 272, pp. 129–141). Paderborn: Heinz Nixdorf Institut, Universität Paderborn.","short":"M. Hunstig, T. Hemsel, W. Sextro, in: J. Gausemeier, F. Rammig, W. Schäfer, A. Trächtler (Eds.), 7. Paderborner Workshop Entwurf Mechatronischer Systeme, Heinz Nixdorf Institut, Universität Paderborn, Paderborn, 2010, pp. 129–141.","bibtex":"@inproceedings{Hunstig_Hemsel_Sextro_2010, place={Paderborn}, series={HNI-Verlagsschriftenreihe}, title={Anregungskonzepte und Modellierung piezoelektrischer Trägheitsmotoren}, volume={272}, booktitle={7. Paderborner Workshop Entwurf mechatronischer Systeme}, publisher={Heinz Nixdorf Institut, Universität Paderborn}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, editor={Gausemeier, Jürgen and Rammig, Franz and Schäfer, Wilhelm and Trächtler, AnsgarEditors}, year={2010}, pages={129–141}, collection={HNI-Verlagsschriftenreihe} }","mla":"Hunstig, Matthias, et al. “Anregungskonzepte Und Modellierung Piezoelektrischer Trägheitsmotoren.” <i>7. Paderborner Workshop Entwurf Mechatronischer Systeme</i>, edited by Jürgen Gausemeier et al., vol. 272, Heinz Nixdorf Institut, Universität Paderborn, 2010, pp. 129–41."},"intvolume":"       272","page":"129-141","place":"Paderborn","year":"2010","author":[{"last_name":"Hunstig","full_name":"Hunstig, Matthias","first_name":"Matthias"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel"},{"first_name":"Walter","full_name":"Sextro, Walter","id":"21220","last_name":"Sextro"}],"date_created":"2019-05-13T10:05:14Z","volume":272,"publisher":"Heinz Nixdorf Institut, Universität Paderborn","date_updated":"2022-01-06T07:04:19Z","title":"Anregungskonzepte und Modellierung piezoelektrischer Trägheitsmotoren","type":"conference","publication":"7. Paderborner Workshop Entwurf mechatronischer Systeme","status":"public","abstract":[{"lang":"eng","text":"Piezoelektrische Trägheitsmotoren nutzen die Trägheit einer bewegten Masse, um diese in kleinen Schritten durch abwechselnde Haft- und Gleitphasen voranzutreiben. Eine Kernfrage bei der Entwicklung eines piezoelektrischen Trägheitsmotors ist, welches elektrische Ansteuersignal für das gewünschte Motorverhalten optimal ist. Das elektrische Signal führt zu einer Bewegung des piezoelektrischen Aktors und damit der Antriebsstange, die den reibschlüssigen Vortrieb bewirkt. Entsprechend wird diese Fragestellung in zwei Teilen untersucht: Anhand eines Starrkörpermodells werden zunächst Bewegungsverläufe für die Antriebsstange ermittelt, mit denen die maximale Geschwindigkeit erreicht wird. Dabei werden drei Antriebsmodi identifiziert. Mit allen kann eine höhere Geschwindigkeit als mit der heute häufig verwendeten Sägezahnanregung erreicht werden. Anschließend wird ein einfaches dynamisches Modell eines piezoelektrischen Aktors genutzt, um die notwendigen elektrischen Ansteuersignale für die verschiedenen Antriebsmodi zu bestimmen. Es zeigt sich, dass das gewählte einfache Modell hierzu nur bedingt geeignet ist."}],"editor":[{"first_name":"Jürgen","full_name":"Gausemeier, Jürgen","last_name":"Gausemeier"},{"last_name":"Rammig","full_name":"Rammig, Franz","first_name":"Franz"},{"first_name":"Wilhelm","last_name":"Schäfer","full_name":"Schäfer, Wilhelm"},{"first_name":"Ansgar","last_name":"Trächtler","full_name":"Trächtler, Ansgar"}],"series_title":"HNI-Verlagsschriftenreihe","user_id":"55222","department":[{"_id":"151"}],"_id":"9753","language":[{"iso":"eng"}],"keyword":["Piezoelektrischer Trägheitsmotoren"]},{"date_updated":"2022-01-06T07:04:19Z","date_created":"2019-05-13T10:10:31Z","author":[{"full_name":"Hunstig, Matthias","last_name":"Hunstig","first_name":"Matthias"},{"last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210","first_name":"Tobias"},{"first_name":"Walter","last_name":"Sextro","id":"21220","full_name":"Sextro, Walter"}],"title":"Improving the Performance of Piezoelectric Inertia Motors","quality_controlled":"1","publication_identifier":{"issn":["0924-4247"]},"year":"2010","citation":{"apa":"Hunstig, M., Hemsel, T., &#38; Sextro, W. (2010). Improving the Performance of Piezoelectric Inertia Motors. In <i>ACTUATOR 2010 Conference Proceedings</i> (pp. 657–661).","short":"M. Hunstig, T. Hemsel, W. Sextro, in: ACTUATOR 2010 Conference Proceedings, 2010, pp. 657–661.","bibtex":"@inproceedings{Hunstig_Hemsel_Sextro_2010, title={Improving the Performance of Piezoelectric Inertia Motors}, booktitle={ACTUATOR 2010 Conference Proceedings}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2010}, pages={657–661} }","mla":"Hunstig, Matthias, et al. “Improving the Performance of Piezoelectric Inertia Motors.” <i>ACTUATOR 2010 Conference Proceedings</i>, 2010, pp. 657–61.","ama":"Hunstig M, Hemsel T, Sextro W. Improving the Performance of Piezoelectric Inertia Motors. In: <i>ACTUATOR 2010 Conference Proceedings</i>. ; 2010:657-661.","chicago":"Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Improving the Performance of Piezoelectric Inertia Motors.” In <i>ACTUATOR 2010 Conference Proceedings</i>, 657–61, 2010.","ieee":"M. Hunstig, T. Hemsel, and W. Sextro, “Improving the Performance of Piezoelectric Inertia Motors,” in <i>ACTUATOR 2010 Conference Proceedings</i>, 2010, pp. 657–661."},"page":"657-661","_id":"9754","user_id":"55222","department":[{"_id":"151"}],"language":[{"iso":"eng"}],"type":"conference","publication":"ACTUATOR 2010 Conference Proceedings","abstract":[{"text":"A model based design approach for improved piezoelectric inertia motors is presented. Three velocityoptimized movement patterns for the driving body have been derived. The influence of the motor parameters and the process of designing an application specific motor with maximum velocity are shown. A simple dynamic model of the piezoelectric actuator is used to calculate the voltage signal for achieving the desired movement pattern. Observed distortions of the optimum pattern, their influence on the motion of the driven body and different methods to reduce them are discussed.","lang":"eng"}],"status":"public"},{"language":[{"iso":"eng"}],"_id":"9755","user_id":"55222","department":[{"_id":"151"}],"status":"public","type":"conference","popular_science":"1","publication":"19. Gemeinschaftstagung LICHT 2010","title":"Konzeption und Aufbau eines Langzeitforschungsstandes zur lichttechnischen Charakterisierung von organischen Leuchtdioden (OLEDs)","date_updated":"2022-01-06T07:04:19Z","author":[{"full_name":"Kraft , Verena","last_name":"Kraft ","first_name":"Verena"},{"full_name":"Bauch, C.","last_name":"Bauch","first_name":"C."},{"first_name":"M.","last_name":"Nückel","full_name":"Nückel, M."},{"first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel"}],"date_created":"2019-05-13T10:11:42Z","place":"Wien, Österreich","year":"2010","citation":{"ieee":"V. Kraft , C. Bauch, M. Nückel, and T. Hemsel, “Konzeption und Aufbau eines Langzeitforschungsstandes zur lichttechnischen Charakterisierung von organischen Leuchtdioden (OLEDs),” in <i>19. Gemeinschaftstagung LICHT 2010</i>, 2010.","chicago":"Kraft , Verena, C. Bauch, M. Nückel, and Tobias Hemsel. “Konzeption Und Aufbau Eines Langzeitforschungsstandes Zur Lichttechnischen Charakterisierung von Organischen Leuchtdioden (OLEDs).” In <i>19. Gemeinschaftstagung LICHT 2010</i>. Wien, Österreich, 2010.","ama":"Kraft  V, Bauch C, Nückel M, Hemsel T. Konzeption und Aufbau eines Langzeitforschungsstandes zur lichttechnischen Charakterisierung von organischen Leuchtdioden (OLEDs). In: <i>19. Gemeinschaftstagung LICHT 2010</i>. Wien, Österreich; 2010.","mla":"Kraft , Verena, et al. “Konzeption Und Aufbau Eines Langzeitforschungsstandes Zur Lichttechnischen Charakterisierung von Organischen Leuchtdioden (OLEDs).” <i>19. Gemeinschaftstagung LICHT 2010</i>, 2010.","bibtex":"@inproceedings{Kraft _Bauch_Nückel_Hemsel_2010, place={Wien, Österreich}, title={Konzeption und Aufbau eines Langzeitforschungsstandes zur lichttechnischen Charakterisierung von organischen Leuchtdioden (OLEDs)}, booktitle={19. Gemeinschaftstagung LICHT 2010}, author={Kraft , Verena and Bauch, C. and Nückel, M. and Hemsel, Tobias}, year={2010} }","short":"V. Kraft , C. Bauch, M. Nückel, T. Hemsel, in: 19. Gemeinschaftstagung LICHT 2010, Wien, Österreich, 2010.","apa":"Kraft , V., Bauch, C., Nückel, M., &#38; Hemsel, T. (2010). Konzeption und Aufbau eines Langzeitforschungsstandes zur lichttechnischen Charakterisierung von organischen Leuchtdioden (OLEDs). In <i>19. Gemeinschaftstagung LICHT 2010</i>. Wien, Österreich."}},{"year":"2010","citation":{"ieee":"E.-G. Lierke, W. Littmann, and T. Hemsel, “Zur Theorie der piezoelektrischen Ultraschallverbundschwinger mit praktischen Schlussfolgerungen für den Entwicklungsingenieur,” <i>Veröffentlichung der Universität Paderborn</i>, 2010.","chicago":"Lierke, Ernst-Günter, Walter Littmann, and Tobias Hemsel. “Zur Theorie Der Piezoelektrischen Ultraschallverbundschwinger Mit Praktischen Schlussfolgerungen Für Den Entwicklungsingenieur.” <i>Veröffentlichung Der Universität Paderborn</i>, 2010.","ama":"Lierke E-G, Littmann W, Hemsel T. Zur Theorie der piezoelektrischen Ultraschallverbundschwinger mit praktischen Schlussfolgerungen für den Entwicklungsingenieur. <i>Veröffentlichung der Universität Paderborn</i>. 2010.","bibtex":"@article{Lierke_Littmann_Hemsel_2010, title={Zur Theorie der piezoelektrischen Ultraschallverbundschwinger mit praktischen Schlussfolgerungen für den Entwicklungsingenieur}, journal={Veröffentlichung der Universität Paderborn}, author={Lierke, Ernst-Günter and Littmann, Walter and Hemsel, Tobias}, year={2010} }","short":"E.-G. Lierke, W. Littmann, T. Hemsel, Veröffentlichung Der Universität Paderborn (2010).","mla":"Lierke, Ernst-Günter, et al. “Zur Theorie Der Piezoelektrischen Ultraschallverbundschwinger Mit Praktischen Schlussfolgerungen Für Den Entwicklungsingenieur.” <i>Veröffentlichung Der Universität Paderborn</i>, 2010.","apa":"Lierke, E.-G., Littmann, W., &#38; Hemsel, T. (2010). Zur Theorie der piezoelektrischen Ultraschallverbundschwinger mit praktischen Schlussfolgerungen für den Entwicklungsingenieur. <i>Veröffentlichung Der Universität Paderborn</i>."},"publication_identifier":{"issn":["1948-5719"]},"title":"Zur Theorie der piezoelektrischen Ultraschallverbundschwinger mit praktischen Schlussfolgerungen für den Entwicklungsingenieur","date_updated":"2022-01-06T07:04:19Z","author":[{"first_name":"Ernst-Günter","last_name":"Lierke","full_name":"Lierke, Ernst-Günter"},{"last_name":"Littmann","full_name":"Littmann, Walter","first_name":"Walter"},{"first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210"}],"date_created":"2019-05-13T10:14:21Z","abstract":[{"text":"Dieser Beitrag fasst die bekannten analytischen Berechnungsmethoden für piezoelektrische Ultraschallverbundschwinger zusammen und gibt anhand typischer Beispiele Anleitungen zur Lösung theoretischer und technischer Fragen bei deren Entwicklung. Zunächst werden die passiven, in der Regel metallischen Komponenten von Verbundschwingern als Stab- oder Plattensysteme mit homogen verteilten Feder-, Masse und Dämpfungseigenschaften beschrieben. Hier breitet sich die Schwingungsenergie in Form stehender und fortschreitender Wellen zum akustischen Verbraucher hin aus. Es folgt eine gleichwertige und schaltungstreue Darstellung durch elektrische oder mechanische Vierpole, die für den Entwicklungsingenieur leichter zu handhaben sind und in Netzwerken direkt mit Masons Ersatzschaltung des piezoelektrischen Wandlers gekoppelt werden können. Danach werden die wichtigsten, messtechnisch zugänglichen Parameter anhand eines in Resonanznähe zulässigen Ersatzmodells mit konzentrierten elektrischen bzw. mechanischen Komponenten definiert. Als Schwerpunkt wird anschließend deren analytische Berechnung und messtechnische Verifizierung an typischen Beispielen demonstriert. Es folgen wichtige technische Informationen über Frequenzkorrekturen, Schallgeschwindigkeitsdispersion, Leistungs- und Belastbarkeitsgrenzen der Komponenten und andere wertvolle praktische Hinweise.","lang":"eng"}],"status":"public","type":"journal_article","publication":"Veröffentlichung der Universität Paderborn","language":[{"iso":"eng"}],"_id":"9756","user_id":"55222","department":[{"_id":"151"}]},{"language":[{"iso":"eng"}],"_id":"9757","user_id":"55222","department":[{"_id":"151"}],"status":"public","type":"journal_article","publication":"MECHANIKA","title":"The experimental research of piezoelectric actuator with two vectors of polarization direction","date_updated":"2022-01-06T07:04:19Z","date_created":"2019-05-13T10:18:38Z","author":[{"last_name":"Lucinskis","full_name":"Lucinskis, Raimundas","first_name":"Raimundas"},{"last_name":"Mazeika","full_name":"Mazeika, Dalius","first_name":"Dalius"},{"first_name":"Tobias","last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias"},{"full_name":"Bansevicius, Ramutis","last_name":"Bansevicius","first_name":"Ramutis"}],"year":"2010","citation":{"apa":"Lucinskis, R., Mazeika, D., Hemsel, T., &#38; Bansevicius, R. (2010). The experimental research of piezoelectric actuator with two vectors of polarization direction. <i>MECHANIKA</i>.","bibtex":"@article{Lucinskis_Mazeika_Hemsel_Bansevicius_2010, title={The experimental research of piezoelectric actuator with two vectors of polarization direction}, journal={MECHANIKA}, author={Lucinskis, Raimundas and Mazeika, Dalius and Hemsel, Tobias and Bansevicius, Ramutis}, year={2010} }","mla":"Lucinskis, Raimundas, et al. “The Experimental Research of Piezoelectric Actuator with Two Vectors of Polarization Direction.” <i>MECHANIKA</i>, 2010.","short":"R. Lucinskis, D. Mazeika, T. Hemsel, R. Bansevicius, MECHANIKA (2010).","ieee":"R. Lucinskis, D. Mazeika, T. Hemsel, and R. Bansevicius, “The experimental research of piezoelectric actuator with two vectors of polarization direction,” <i>MECHANIKA</i>, 2010.","chicago":"Lucinskis, Raimundas, Dalius Mazeika, Tobias Hemsel, and Ramutis Bansevicius. “The Experimental Research of Piezoelectric Actuator with Two Vectors of Polarization Direction.” <i>MECHANIKA</i>, 2010.","ama":"Lucinskis R, Mazeika D, Hemsel T, Bansevicius R. The experimental research of piezoelectric actuator with two vectors of polarization direction. <i>MECHANIKA</i>. 2010."},"quality_controlled":"1","publication_identifier":{"issn":["1948-5719"]}}]