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138 Publications
2024 | Journal Article | LibreCat-ID: 51518
Aimiyekagbon OK, Bender A, Hemsel T, Sextro W. Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions. Electronics. 2024;13(3). doi:10.3390/electronics13030521
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2023 | Conference Abstract | LibreCat-ID: 47234
Sehlmeyer B, Kampmann R, Scheidemann C, Hemsel T, Getzlaff M. Burst Mode of Ultrasonic Resonant Oscillations for Stimulation and Destruction of Tumor Cells. In: Deutsche Physikalische Gesellschaft e. V., ed. Frühjahrstagung 2023, Sektion Kondensierte Materie (SKM). ; 2023.
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2023 | Conference Abstract | LibreCat-ID: 47235
Kampmann R, Sehlmeyer B, Scheidemann C, Hemsel T, Getzlaff M. Burst Mode Characteristics of an Ultrasonic Transducer for Treatment of Cancer Cells. In: Deutsche Physikalische Gesellschaft e. V., ed. Frühjahrstagung 2023, Sektion Kondensierte Marterie (SKM). ; 2023.
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2023 | Conference Abstract | LibreCat-ID: 51117
Scheidemann C, Hemsel T, Friesen O, Claes L, Sextro W. Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics. In: ; 2023.
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2023 | Conference Abstract | LibreCat-ID: 51118
Scheidemann C, Hemsel T, Friesen O, Claes L, Sextro W. Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics. In: ; 2023.
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2023 | Conference Abstract | LibreCat-ID: 51119
Scheidemann C, Hagedorn OEC, Hemsel T, Sextro W. Experimental Investigation of Bond Formation and Wire Deformation in the Ultrasonic Wire Bonding Process. In: ; 2023.
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2022 | Book Chapter | LibreCat-ID: 33500
Hemsel T, Twiefel J. Piezoelectric Ultrasonic Power Transducers. In: Reference Module in Materials Science and Materials Engineering. Elsevier; 2022. doi:10.1016/b978-0-12-819728-8.00047-4
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2022 | Conference Paper | LibreCat-ID: 30371
Hagedorn OEC, Broll M, Kirsch O, Hemsel T, Sextro W. Experimental Investigation of the Influence of different Bond Tool Grooves on the Bond Quality for Ultrasonic Thick Wire Bonding. In: CIPS 2022 - 12th International Conference on Integrated Power Electronics Systems. VDE VERLAG GMBH; 2022:138-143.
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2022 | Conference Paper | LibreCat-ID: 34104
Scheidemann C, Kirsch O, Hemsel T, Sextro W. Experimental Investigation of Multidimensional Ultrasonic Heavy Wire Bonding. In: 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC). IEEE; 2022. doi:10.1109/estc55720.2022.9939478
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2022 | Report | LibreCat-ID: 52045
Scheidemann C, Hemsel T, Sextro W. Modellbasierte Ermittlung optimaler Prozessparameter für neuartige Ultraschallbondverbindungen. LibreCat University; 2022. doi:10.2314/KXP:1879655276
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2021 | Journal Article | LibreCat-ID: 21436
Schemmel R, Krieger V, Hemsel T, Sextro W. Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization. Microelectronics Reliability. 2021;119:114077. doi:https://doi.org/10.1016/j.microrel.2021.114077
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2020 | Conference Paper | LibreCat-ID: 17355
Schemmel R, Scheidemann C, Hemsel T, Kirsch O, Sextro W. Experimental analysis and modelling of bond formation in ultrasonic heavy wire bonding. In: CIPS 2020; 11th International Conference on Integrated Power Electronics Systems. ; 2020:1-6.
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2020 | Conference Paper | LibreCat-ID: 17706
Schemmel R, Krieger V, Hemsel T, Sextro W. Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization. In: 2020 21st International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). ; 2020. doi:10.1109/eurosime48426.2020.9152679
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2019 | Conference Paper | LibreCat-ID: 14852
Dunst P, Bornmann P, Hemsel T, Littmann W, Sextro W. Atomization of Fluids with Ultrasound. In: Lötters J, Urban G, eds. Conference Proceedings - The 4th Conference on MicroFluidic Handling Systems (MFHS2019). Enschede, The Netherlands; 2019:140-143.
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2019 | Conference Paper | LibreCat-ID: 15244
Hagedorn OEC, Pielsticker D, Hemsel T, Sextro W. Messung hochfrequenter In-Plane-Schwingungen mittels Laservibrometrie in räumlich eingeschränkten Umgebungen. In: 2. VDI-Fachtagung Schwingungen 2019. VDI Verlag GmbH · Düsseldorf 2019; 2019.
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2019 | Conference Paper | LibreCat-ID: 10258
Dunst P, Hemsel T, Bornmann P, Littmann W, Sextro W. Modellbasierte und experimentelle Charakterisierung von intensiven Ultraschall-Stehwellenfeldern für die Zerstäubung hochviskoser Flüssigkeiten. In: DAGA 2019. ; 2019.
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2019 | Conference Paper | LibreCat-ID: 15412
Schemmel R, Eacock F, Dymel C, et al. Impact of multi-dimensional vibration trajectories on quality and failure modes in ultrasonic bonding. In: International Symposium on Microelectronics. ; 2019:509-514. doi:10.4071/2380-4505-2019.1.000509
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2019 | Journal Article | LibreCat-ID: 10334
Schemmel R, Hemsel T, Dymel C, Hunstig M, Brökelmann M, Sextro W. Using complex multi-dimensional vibration trajectories in ultrasonic bonding and welding. Sensors and Actuators A: Physical. 2019;295:653-662. doi:10.1016/j.sna.2019.04.025
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2018 | Journal Article | LibreCat-ID: 9990
Dunst P, Bornmann P, Hemsel T, Littmann W, Sextro W. Vibration Assisted Dosing, Mixing and Transport of Dry Fine Powders. ACTUATOR 2018; 16th International Conference on New Actuators. 2018:142-145.
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2018 | Journal Article | LibreCat-ID: 9991
Dunst P, Bornmann P, Hemsel T, Sextro W. Vibration-Assisted Handling of Dry Fine Powders. Actuators 2018, 7(2). 2018:1-11. doi:10.3390/act7020018
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2018 | Conference Paper | LibreCat-ID: 9992
Dymel C, Eichwald P, Schemmel R, et al. Numerical and statistical investigation of weld formation in a novel two-dimensional copper-copper bonding process. In: (Proceedings of 7th Electronics System-Integration Technology Conference, Dresden, Germany). ; 2018:1-6.
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2018 | Conference Paper | LibreCat-ID: 9993
Dymel C, Schemmel R, Hemsel T, Sextro W, Brökelmann M, Hunstig M. Experimental investigations on the impact of bond process parameters in two-dimensional ultrasonic copper bonding. In: (Proceedings of 8th Electronics IEEE CPMT Symposium Japan (ICSJ 2018), Kyoto, Japan). ; 2018:41-44.
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2018 | Conference Paper | LibreCat-ID: 9998
Schemmel R, Hemsel T, Sextro W. Numerical and experimental investigations in ultrasonic heavy wire bonding. In: 6th European Conference on Computational Mechanics (ECCM 6). Glasgow, UK; 2018:1-12.
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2017 | Journal Article | LibreCat-ID: 9972
Dunst P, Hemsel T, Sextro W. Analysis of pipe vibration in an ultrasonic powder transportationsystem. elsevier. 2017;Sensors and Actuators A 263:733-736.
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2017 | Conference Paper | LibreCat-ID: 9978
Kimotho JK, Sextro W, Hemsel T. Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing. In: IEEE Transactions on Reliability. ; 2017:1-10. doi:10.1109/TR.2017.2710260
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2017 | Conference Paper | LibreCat-ID: 9982
Schemmel R, Hemsel T, Sextro W. MoRFUS: Mobile Reinigungseinheit für Förderketten basierend auf Ultraschall. In: 43. Deutsche Jahrestagung Für Akustik. Kiel 2017; 2017:611-614.
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2016 | Conference Paper | LibreCat-ID: 9958
Dunst P, Sextro W, Bornmann P, Hemsel T, Littmann W. Transportation of dry fine powders by coordinated friction manipulation. In: PAMM Proc. Appl. Math. Mech. 16. Braunschweig; 2016:635-636. doi:10.1002/pamm.201610306
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2015 | Journal Article | LibreCat-ID: 9944
Bornmann P, Hemsel T, Sextro W, Memoli G, Hodnett M, Zeqiri B. Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler. tm - Technisches Messen. 2015;82(2):73-84. doi:10.1515/teme-2015-0017
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2015 | Journal Article | LibreCat-ID: 9948
Kudo R, Bornmann P, Hemsel T, Morita T. Thick KNbO 3 films deposited by ultrasonic-assisted hydrothermal method. Acoustical Science and Technology. 2015;36(3):262-264. doi:10.1250/ast.36.262
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2014 | Conference Paper | LibreCat-ID: 9868
Althoff S, Neuhaus J, Hemsel T, Sextro W. Improving the bond quality of copper wire bonds using a friction model approach. In: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th. ; 2014:1549-1555. doi:10.1109/ECTC.2014.6897500
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2014 | Conference Paper | LibreCat-ID: 9869
Bornmann P, Hemsel T, Sextro W, Memoli G, Hodnett M, Zeqiri B. Self-Sensing Ultrasound Transducer for Cavitation Detection. In: 2014 IEEE International Ultrasonics Symposium Proceedings. ; 2014:663-666. doi:10.1109/ULTSYM.2014.0163
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2014 | Journal Article | LibreCat-ID: 9874
Hemsel T, Bornmann P, Morita T, Sondermann-Wölke C, Sextro W. Reliability analysis of ultrasonic power transducers. Archive of Applied Mechanics. 2014:1-7. doi:10.1007/s00419-014-0965-4
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2014 | Journal Article | LibreCat-ID: 9876
Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia motors: experimental validation. Archive of Applied Mechanics. 2014:1-9. doi:10.1007/s00419-014-0940-0
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2014 | Journal Article | LibreCat-ID: 9878
Isobe G, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on. 2014;61(2):225-230. doi:10.1109/TUFFC.2014.6722608
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2013 | Journal Article | LibreCat-ID: 9794
Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Increasing the power of piezoelectric energy harvesters by magnetic stiffening. Journal of Intelligent Material Systems and Structures. 2013;24(11):1332-1342. doi:10.1177/1045389X13483021
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2013 | Journal Article | LibreCat-ID: 9795
Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments. Sensors and Actuators A: Physical. 2013;200:138-146. doi:10.1016/j.sna.2013.01.008
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2013 | Conference Paper | LibreCat-ID: 9796
Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Characteristics of Piezoelectric Energy Harvesters in Autonomous Systems. In: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop, Hannover, Germany, 14.-17.7.2013. Berichte aus dem IDS. Hannover, Germany; 2013:159-161.
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2013 | Conference Paper | LibreCat-ID: 9797
Althoff S, Neuhaus J, Hemsel T, Sextro W. A friction based approach for modeling wire bonding. In: IMAPS 2013, 46th International Symposium on Microelectronics. Orlando (Florida), USA; 2013. doi:10.4071/isom-2013-TA67
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2013 | Conference Paper | LibreCat-ID: 9801
Hunstig M, Al-Ashtari W, Hemsel T, Sextro W. Leistungs- und Bandbreitensteigerung von Energy-Harvesting-Generatoren für Energieautarke Systeme. In: Gausemeier J, Dumitrescu R, Rammig F, Schäfer W, Trächtler A, eds. 9. Paderborner Workshop Entwurf Mechatronischer Systeme. HNI-Verlagsschriftenreihe. Paderborn: Heinz Nixdorf Institut, Universität Paderborn; 2013:359-372.
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2013 | Conference Paper | LibreCat-ID: 9802
Hunstig M, Hemsel T, Sextro W. High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation. In: Proceedings of 10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop. Hannover, Germany; 2013:16-18.
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2013 | Journal Article | LibreCat-ID: 9803
Hunstig M, Hemsel T, Sextro W. Modelling the friction contact in an inertia motor. Journal of Intelligent Material Systems and Structures. 2013;24(11):1380-1391. doi:10.1177/1045389X12474354
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2013 | Journal Article | LibreCat-ID: 9804
Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric inertia drives - Part II: Frequency-limited excitation. Sensors and Actuators A: Physical. 2013;200:79-89. doi:10.1016/j.sna.2012.11.043
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2013 | Journal Article | LibreCat-ID: 9805
Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric inertia drives - Part I: Ideal Excitation. Sensors and Actuators A: Physical. 2013;200:90-100. doi:10.1016/j.sna.2012.11.012
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2013 | Special Issue | LibreCat-ID: 9863
Morita T, Hemsel T, Ijima T, et al., eds. Selected Papers from the 9th International Workshop on Piezoelectric Materials and Applications in Actuators. Vol 200. Elsevier; 2013:1-172. doi:10.1016/j.sna.2013.06.017
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2013 | Journal Article | LibreCat-ID: 9866
Ohta K, Isobe G, Bornmann P, Hemsel T, Morita T. Study on optimizing ultrasonic irradiation period for thick polycrystalline PZT film by hydrothermal method. Ultrasonics. 2013;53(4):837-841. doi:10.1016/j.ultras.2012.12.003
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2013 | Journal Article | LibreCat-ID: 9867
Yokouchi Y, Maeda T, Bornmann P, Hemsel T, Morita T. Piezoelectric Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized with Hydrothermal Powders. Japanese Journal of Applied Physics. 2013;52(7S). doi:10.7567/JJAP.52.07HB03
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2012 | Journal Article | LibreCat-ID: 9781
Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Frequency tuning of piezoelectric energy harvesters by magnetic force. Smart Materials and Structures. 2012;21(3):035019.
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2012 | Journal Article | LibreCat-ID: 9782
Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Analytical determination of characteristic frequencies and equivalent circuit parameters of a piezoelectric bimorph. Journal of Intelligent Material Systems and Structures. 2012;23(1):15-23. doi:10.1177/1045389X11430742
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2012 | Conference Paper | LibreCat-ID: 9783
Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation detection / monitoring in sonochemical reactors. In: Ultrasonics Symposium (IUS), 2012 IEEE International. ; 2012:1141-1144. doi:10.1109/ULTSYM.2012.0284
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2012 | Conference Paper | LibreCat-ID: 9784
Hunstig M, Hemsel T, Sextro W. An efficient simulation technique for high-frequency piezoelectric inertia motors. In: Ultrasonics Symposium (IUS), 2012 IEEE International. ; 2012:277-280. doi:10.1109/ULTSYM.2012.0068
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