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142 Publications


2019 | Conference Paper | LibreCat-ID: 15412
R. Schemmel et al., “Impact of multi-dimensional vibration trajectories on quality and failure modes in ultrasonic bonding,” in International Symposium on Microelectronics, Boston, 2019, pp. 509–514, doi: 10.4071/2380-4505-2019.1.000509.
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2019 | Journal Article | LibreCat-ID: 10334
R. Schemmel, T. Hemsel, C. Dymel, M. Hunstig, M. Brökelmann, and W. Sextro, “Using complex multi-dimensional vibration trajectories in ultrasonic bonding and welding,” Sensors and Actuators A: Physical, vol. 295, pp. 653–662, 2019, doi: 10.1016/j.sna.2019.04.025.
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2018 | Journal Article | LibreCat-ID: 9990
P. Dunst, P. Bornmann, T. Hemsel, W. Littmann, and W. Sextro, “Vibration Assisted Dosing, Mixing and Transport of Dry Fine Powders,” ACTUATOR 2018; 16th International Conference on New Actuators, pp. 142–145, 2018.
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2018 | Journal Article | LibreCat-ID: 9991
P. Dunst, P. Bornmann, T. Hemsel, and W. Sextro, “Vibration-Assisted Handling of Dry Fine Powders,” Actuators 2018, 7(2)., pp. 1–11, 2018.
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2018 | Conference Paper | LibreCat-ID: 9992
C. Dymel 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, pp. 1–6.
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2018 | Conference Paper | LibreCat-ID: 9993
C. Dymel, R. Schemmel, T. Hemsel, W. Sextro, M. Brökelmann, and M. Hunstig, “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, pp. 41–44.
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2018 | Conference Paper | LibreCat-ID: 9998
R. Schemmel, T. Hemsel, and W. Sextro, “Numerical and experimental investigations in ultrasonic heavy wire bonding,” in 6th European Conference on Computational Mechanics (ECCM 6), 2018, pp. 1–12.
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2017 | Journal Article | LibreCat-ID: 9972
P. Dunst, T. Hemsel, and W. Sextro, “Analysis of pipe vibration in an ultrasonic powder transportationsystem,” elsevier, vol. Sensors and Actuators A 263, pp. 733–736, 2017.
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2017 | Conference Paper | LibreCat-ID: 9978
J. K. Kimotho, W. Sextro, and T. Hemsel, “Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing,” in IEEE Transactions on Reliability, 2017, pp. 1–10.
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2017 | Conference Paper | LibreCat-ID: 9982
R. Schemmel, T. Hemsel, and W. Sextro, “MoRFUS: Mobile Reinigungseinheit für Förderketten basierend auf Ultraschall,” in 43. Deutsche Jahrestagung für Akustik, 2017, pp. 611–614.
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2016 | Conference Paper | LibreCat-ID: 9958
P. Dunst, W. Sextro, P. Bornmann, T. Hemsel, and W. Littmann, “Transportation of dry fine powders by coordinated friction manipulation,” in PAMM Proc. Appl. Math. Mech. 16, 2016, pp. 635–636.
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2015 | Journal Article | LibreCat-ID: 9944
P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, and B. Zeqiri, “Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler,” tm - Technisches Messen, vol. 82, no. 2, pp. 73–84, 2015.
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2015 | Journal Article | LibreCat-ID: 9948
R. Kudo, P. Bornmann, T. Hemsel, and T. Morita, “Thick KNbO 3 films deposited by ultrasonic-assisted hydrothermal method,” Acoustical Science and Technology, vol. 36, no. 3, pp. 262–264, 2015.
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2014 | Conference Paper | LibreCat-ID: 9868
S. Althoff, J. Neuhaus, T. Hemsel, and W. Sextro, “Improving the bond quality of copper wire bonds using a friction model approach,” in Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.
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2014 | Conference Paper | LibreCat-ID: 9869
P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, and B. Zeqiri, “Self-Sensing Ultrasound Transducer for Cavitation Detection,” in 2014 IEEE International Ultrasonics Symposium Proceedings, 2014, pp. 663–666.
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2014 | Journal Article | LibreCat-ID: 9874
T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, and W. Sextro, “Reliability analysis of ultrasonic power transducers,” Archive of Applied Mechanics, pp. 1–7, 2014.
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2014 | Journal Article | LibreCat-ID: 9876
M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric inertia motors: experimental validation,” Archive of Applied Mechanics, pp. 1–9, 2014.
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2014 | Journal Article | LibreCat-ID: 9878
G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “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, vol. 61, no. 2, pp. 225–230, 2014.
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2013 | Journal Article | LibreCat-ID: 9794
W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Increasing the power of piezoelectric energy harvesters by magnetic stiffening,” Journal of Intelligent Material Systems and Structures, vol. 24, no. 11, pp. 1332–1342, 2013.
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2013 | Journal Article | LibreCat-ID: 9795
W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments,” Sensors and Actuators A: Physical, vol. 200, pp. 138–146, 2013.
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