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39 Publications
2023 | Dissertation | LibreCat-ID: 41971
Predicting the Bond Quality of Heavy Copper Wire Bonds using a Friction Model Approach
S. Althoff, Predicting the Bond Quality of Heavy Copper Wire Bonds Using a Friction Model Approach, Shaker, 2023.
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S. Althoff, Predicting the Bond Quality of Heavy Copper Wire Bonds Using a Friction Model Approach, Shaker, 2023.
2023 | Conference Abstract | LibreCat-ID: 47234
Burst Mode of Ultrasonic Resonant Oscillations for Stimulation and Destruction of Tumor Cells
B. Sehlmeyer, R. Kampmann, C. Scheidemann, T. Hemsel, M. Getzlaff, in: Deutsche Physikalische Gesellschaft e. V. (Ed.), Frühjahrstagung 2023, Sektion Kondensierte Materie (SKM), 2023.
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B. Sehlmeyer, R. Kampmann, C. Scheidemann, T. Hemsel, M. Getzlaff, in: Deutsche Physikalische Gesellschaft e. V. (Ed.), Frühjahrstagung 2023, Sektion Kondensierte Materie (SKM), 2023.
2023 | Conference Abstract | LibreCat-ID: 47235
Burst Mode Characteristics of an Ultrasonic Transducer for Treatment of Cancer Cells
R. Kampmann, B. Sehlmeyer, C. Scheidemann, T. Hemsel, M. Getzlaff, in: Deutsche Physikalische Gesellschaft e. V. (Ed.), Frühjahrstagung 2023, Sektion Kondensierte Marterie (SKM), 2023.
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R. Kampmann, B. Sehlmeyer, C. Scheidemann, T. Hemsel, M. Getzlaff, in: Deutsche Physikalische Gesellschaft e. V. (Ed.), Frühjahrstagung 2023, Sektion Kondensierte Marterie (SKM), 2023.
2023 | Conference Abstract | LibreCat-ID: 51117
Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics
C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.
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C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.
2023 | Conference Abstract | LibreCat-ID: 51118
Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics
C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.
LibreCat
C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.
2023 | Conference Abstract | LibreCat-ID: 51119
Experimental Investigation of Bond Formation and Wire Deformation in the Ultrasonic Wire Bonding Process
C. Scheidemann, O.E.C. Hagedorn, T. Hemsel, W. Sextro, in: 2023.
LibreCat
C. Scheidemann, O.E.C. Hagedorn, T. Hemsel, W. Sextro, in: 2023.
2022 | Dissertation | LibreCat-ID: 34272 | 
Enhanced process development by simulation of ultrasonic heavy wire bonding
R. Schemmel, Enhanced Process Development by Simulation of Ultrasonic Heavy Wire Bonding, Shaker, 2022.
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R. Schemmel, Enhanced Process Development by Simulation of Ultrasonic Heavy Wire Bonding, Shaker, 2022.
2022 | Conference Paper | LibreCat-ID: 30371
Experimental Investigation of the Influence of different Bond Tool Grooves on the Bond Quality for Ultrasonic Thick Wire Bonding
O.E.C. Hagedorn, M. Broll, O. Kirsch, T. Hemsel, W. Sextro, in: CIPS 2022 - 12th International Conference on Integrated Power Electronics Systems, VDE VERLAG GMBH, Berlin, 2022, pp. 138–143.
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O.E.C. Hagedorn, M. Broll, O. Kirsch, T. Hemsel, W. Sextro, in: CIPS 2022 - 12th International Conference on Integrated Power Electronics Systems, VDE VERLAG GMBH, Berlin, 2022, pp. 138–143.
2022 | Conference Paper | LibreCat-ID: 34104
Experimental Investigation of Multidimensional Ultrasonic Heavy Wire Bonding
C. Scheidemann, O. Kirsch, T. Hemsel, W. Sextro, in: 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC), IEEE, 2022.
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C. Scheidemann, O. Kirsch, T. Hemsel, W. Sextro, in: 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC), IEEE, 2022.
2022 | Report | LibreCat-ID: 52045
Modellbasierte Ermittlung optimaler Prozessparameter für neuartige Ultraschallbondverbindungen
C. Scheidemann, T. Hemsel, W. Sextro, Modellbasierte Ermittlung optimaler Prozessparameter für neuartige Ultraschallbondverbindungen, LibreCat University, 2022.
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C. Scheidemann, T. Hemsel, W. Sextro, Modellbasierte Ermittlung optimaler Prozessparameter für neuartige Ultraschallbondverbindungen, LibreCat University, 2022.
2021 | Dissertation | LibreCat-ID: 34274
Prozessgerechte Gestaltung von Werkzeugen auf Basis von Verschleißsimulationen am Beispiel des Ultraschallbondens
P. Eichwald, Prozessgerechte Gestaltung von Werkzeugen auf Basis von Verschleißsimulationen am Beispiel des Ultraschallbondens, Shaker, 2021.
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P. Eichwald, Prozessgerechte Gestaltung von Werkzeugen auf Basis von Verschleißsimulationen am Beispiel des Ultraschallbondens, Shaker, 2021.
2021 | Conference Paper | LibreCat-ID: 25265
Application and modelling of ultrasonic transducers using 1-3 piezoelectric composites with structured electrodes
D. Dreiling, D. Itner, N. Feldmann, C. Scheidemann, H. Gravenkamp, B. Henning, in: Fortschritte Der Akustik - DAGA 2021, Deutsche Gesellschaft für Akustik e.V. (DEGA), Wien, 2021.
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D. Dreiling, D. Itner, N. Feldmann, C. Scheidemann, H. Gravenkamp, B. Henning, in: Fortschritte Der Akustik - DAGA 2021, Deutsche Gesellschaft für Akustik e.V. (DEGA), Wien, 2021.
2021 | Journal Article | LibreCat-ID: 21436
Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization
R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, Microelectronics Reliability 119 (2021) 114077.
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R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, Microelectronics Reliability 119 (2021) 114077.
2020 | Conference Paper | LibreCat-ID: 17355
Experimental analysis and modelling of bond formation in ultrasonic heavy wire bonding
R. Schemmel, C. Scheidemann, T. Hemsel, O. Kirsch, W. Sextro, in: CIPS 2020; 11th International Conference on Integrated Power Electronics Systems, 2020, pp. 1–6.
LibreCat
R. Schemmel, C. Scheidemann, T. Hemsel, O. Kirsch, W. Sextro, in: CIPS 2020; 11th International Conference on Integrated Power Electronics Systems, 2020, pp. 1–6.
2020 | Conference Paper | LibreCat-ID: 17706
Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization
R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, in: 2020 21st International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2020.
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R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, in: 2020 21st International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2020.
2019 | Conference Paper | LibreCat-ID: 15244
Messung hochfrequenter In-Plane-Schwingungen mittels Laservibrometrie in räumlich eingeschränkten Umgebungen
O.E.C. Hagedorn, D. Pielsticker, T. Hemsel, W. Sextro, in: 2. VDI-Fachtagung Schwingungen 2019, VDI Verlag GmbH · Düsseldorf 2019, 2019.
LibreCat
O.E.C. Hagedorn, D. Pielsticker, T. Hemsel, W. Sextro, in: 2. VDI-Fachtagung Schwingungen 2019, VDI Verlag GmbH · Düsseldorf 2019, 2019.
2019 | Conference Paper | LibreCat-ID: 15412
Impact of multi-dimensional vibration trajectories on quality and failure modes in ultrasonic bonding
R. Schemmel, F. Eacock, C. Dymel, T. Hemsel, M. Hunstig, M. Brökelmann, W. Sextro, in: International Symposium on Microelectronics, 2019, pp. 509–514.
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R. Schemmel, F. Eacock, C. Dymel, T. Hemsel, M. Hunstig, M. Brökelmann, W. Sextro, in: International Symposium on Microelectronics, 2019, pp. 509–514.
2019 | Journal Article | LibreCat-ID: 10334
Using complex multi-dimensional vibration trajectories in ultrasonic bonding and welding
R. Schemmel, T. Hemsel, C. Dymel, M. Hunstig, M. Brökelmann, W. Sextro, Sensors and Actuators A: Physical 295 (2019) 653–662.
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R. Schemmel, T. Hemsel, C. Dymel, M. Hunstig, M. Brökelmann, W. Sextro, Sensors and Actuators A: Physical 295 (2019) 653–662.
2018 | Conference Paper | LibreCat-ID: 9992
Numerical and statistical investigation of weld formation in a novel two-dimensional copper-copper bonding process
C. Dymel, P. Eichwald, R. Schemmel, T. Hemsel, M. Brökelmann, M. Hunstig, W. Sextro, in: (Proceedings of 7th Electronics System-Integration Technology Conference, Dresden, Germany), 2018, pp. 1–6.
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C. Dymel, P. Eichwald, R. Schemmel, T. Hemsel, M. Brökelmann, M. Hunstig, W. Sextro, in: (Proceedings of 7th Electronics System-Integration Technology Conference, Dresden, Germany), 2018, pp. 1–6.
2018 | Conference Paper | LibreCat-ID: 9993
Experimental investigations on the impact of bond process parameters in two-dimensional ultrasonic copper bonding
C. Dymel, R. Schemmel, T. Hemsel, W. Sextro, M. Brökelmann, M. Hunstig, in: (Proceedings of 8th Electronics IEEE CPMT Symposium Japan (ICSJ 2018), Kyoto, Japan), 2018, pp. 41–44.
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C. Dymel, R. Schemmel, T. Hemsel, W. Sextro, M. Brökelmann, M. Hunstig, in: (Proceedings of 8th Electronics IEEE CPMT Symposium Japan (ICSJ 2018), Kyoto, Japan), 2018, pp. 41–44.
2018 | Conference Paper | LibreCat-ID: 9997
Effects of different working frequencies on the joint formation in copper wire bonding
R. Schemmel, S. Althoff, W. Sextro, A. Unger, M. Brökelmann, M. Hunstig, in: CIPS 2018 - 10th International Conference on Integrated Power Electronics Systems (CIPS 2018), Stuttgart, Germany, 2018, pp. 230–235.
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R. Schemmel, S. Althoff, W. Sextro, A. Unger, M. Brökelmann, M. Hunstig, in: CIPS 2018 - 10th International Conference on Integrated Power Electronics Systems (CIPS 2018), Stuttgart, Germany, 2018, pp. 230–235.
2018 | Conference Paper | LibreCat-ID: 9998
Numerical and experimental investigations in ultrasonic heavy wire bonding
R. Schemmel, T. Hemsel, W. Sextro, in: 6th European Conference on Computational Mechanics (ECCM 6), Glasgow, UK, 2018, pp. 1–12.
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R. Schemmel, T. Hemsel, W. Sextro, in: 6th European Conference on Computational Mechanics (ECCM 6), Glasgow, UK, 2018, pp. 1–12.
2017 | Journal Article | LibreCat-ID: 9973
Multi-dimensional Ultrasonic Copper Bonding – New Challenges for Tool Design
P. Eichwald, S. Althoff, R. Schemmel, W. Sextro, A. Unger, M. Brökelmann, M. Hunstig, IMAPSource Vol. 2017, No. 1 (2017).
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P. Eichwald, S. Althoff, R. Schemmel, W. Sextro, A. Unger, M. Brökelmann, M. Hunstig, IMAPSource Vol. 2017, No. 1 (2017).
2017 | Dissertation | LibreCat-ID: 9986 |
Modellbasierte Mehrzieloptimierung zur Herstellung von Ultraschall-Drahtbondverbindungen in Leistungshalbleitermodulen
A. Unger, Modellbasierte Mehrzieloptimierung Zur Herstellung von Ultraschall-Drahtbondverbindungen in Leistungshalbleitermodulen, Universität Paderborn, 2017.
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A. Unger, Modellbasierte Mehrzieloptimierung Zur Herstellung von Ultraschall-Drahtbondverbindungen in Leistungshalbleitermodulen, Universität Paderborn, 2017.
2016 | Conference Paper | LibreCat-ID: 9955
Shape-Dependent Transmittable Tangential Force of Wire Bond Tools
S. Althoff, T. Meyer, A. Unger, W. Sextro, F. Eacock, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 2103–2110.
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S. Althoff, T. Meyer, A. Unger, W. Sextro, F. Eacock, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 2103–2110.
2016 | Journal Article | LibreCat-ID: 9957
Kupferbondverbindungen intelligent herstellen
M. Brökelmann, A. Unger, T. Meyer, S. Althoff, W. Sextro, M. Hunstig, F. Biermann, K. Guth, Wt-Online 7/8 (2016) 512–519.
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M. Brökelmann, A. Unger, T. Meyer, S. Althoff, W. Sextro, M. Hunstig, F. Biermann, K. Guth, Wt-Online 7/8 (2016) 512–519.
2016 | Conference Paper | LibreCat-ID: 9959
Effect of different oxide layers on the ultrasonic copper wire bond process
F. Eacock, A. Unger, P. Eichwald, O. Grydin, F. Hengsbach, S. Althoff, M. Schaper, K. Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 2111–2118.
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F. Eacock, A. Unger, P. Eichwald, O. Grydin, F. Hengsbach, S. Althoff, M. Schaper, K. Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 2111–2118.
2016 | Conference Paper | LibreCat-ID: 9960
Micro Wear Modeling in Copper Wire Wedge Bonding
P. Eichwald, A. Unger, F. Eacock, S. Althoff, W. Sextro, K. Guth, M. Brökelmann, in: IEEE CPMT Symposium Japan, 2016, 2016.
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P. Eichwald, A. Unger, F. Eacock, S. Althoff, W. Sextro, K. Guth, M. Brökelmann, in: IEEE CPMT Symposium Japan, 2016, 2016.
2016 | Conference Paper | LibreCat-ID: 9966
Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation
T. Meyer , A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 622–628.
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T. Meyer , A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 622–628.
2016 | Conference Paper | LibreCat-ID: 9968
Validated Simulation of the Ultrasonic Wire Bonding Process
A. Unger, R. Schemmel, T. Meyer, F. Eacock, P. Eichwald, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: Wear Modeling in Copper Wire Wedge Bonding. IEEE CPMT Symposium Japan, 2016, IEEE CPMT Symposium Japan, 2016, pp. 251–254.
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A. Unger, R. Schemmel, T. Meyer, F. Eacock, P. Eichwald, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: Wear Modeling in Copper Wire Wedge Bonding. IEEE CPMT Symposium Japan, 2016, IEEE CPMT Symposium Japan, 2016, pp. 251–254.
2015 | Conference Paper | LibreCat-ID: 9943
Improving the cleaning process in copper wire bonding by adapting bonding parameters
S. Althoff, A. Unger, W. Sextro, F. Eacock, in: 2015 17th Electronics Packaging Technology Conference, 2015, pp. 1–6.
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S. Althoff, A. Unger, W. Sextro, F. Eacock, in: 2015 17th Electronics Packaging Technology Conference, 2015, pp. 1–6.
2015 | Conference Paper | LibreCat-ID: 9951
Modeling and simulation of the ultrasonic wire bonding process
T. Meyer, A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: 2015 17th Electronics Packaging Technology Conference, 2015.
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T. Meyer, A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: 2015 17th Electronics Packaging Technology Conference, 2015.
2015 | Conference Paper | LibreCat-ID: 9954
Modeling of the Stick-Slip Effect in Heavy Copper Wire Bonding to Determine and Reduce Tool Wear
A. Unger, W. Sextro, T. Meyer, P. Eichwald, S. Althoff, F. Eacock, M. Brökelmann, in: 2015 17th Electronics Packaging Technology Conference, 2015.
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A. Unger, W. Sextro, T. Meyer, P. Eichwald, S. Althoff, F. Eacock, M. Brökelmann, in: 2015 17th Electronics Packaging Technology Conference, 2015.
2014 | Conference Paper | LibreCat-ID: 9868
Improving the bond quality of copper wire bonds using a friction model approach
S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.
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S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.
2014 | Conference Paper | LibreCat-ID: 9870
Microstructural investigations of aluminum and copper wire bonds
F. Eacock , M. Schaper, S. Althoff, A. Unger, P. Eichwald, F. Hengsbach, C. Zinn, Martin Joachim Holzweissig, K. Guth, in: Proceedings of the 47th International Symposium on Microelectronics, 2014.
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F. Eacock , M. Schaper, S. Althoff, A. Unger, P. Eichwald, F. Hengsbach, C. Zinn, Martin Joachim Holzweissig, K. Guth, in: Proceedings of the 47th International Symposium on Microelectronics, 2014.
2014 | Conference Paper | LibreCat-ID: 9895
Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds
A. Unger, W. Sextro, S. Althoff, P. Eichwald, T. Meyer, F. Eacock, M. Brökelmann, in: Proceedings of the 47th International Symposium on Microelectronics (IMAPS), San Diego, CA, US, 2014, pp. 289–294.
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A. Unger, W. Sextro, S. Althoff, P. Eichwald, T. Meyer, F. Eacock, M. Brökelmann, in: Proceedings of the 47th International Symposium on Microelectronics (IMAPS), San Diego, CA, US, 2014, pp. 289–294.
2014 | Conference Paper | LibreCat-ID: 9896
Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding
A. Unger, W. Sextro, S. Althoff, T. Meyer, M. Brökelmann, K. Neumann, R.F. Reimann, K. Guth, D. Bolowski, in: Proceedings of 8th International Conference on Integrated Power Electronic Systems, 2014, pp. 175–180.
LibreCat
A. Unger, W. Sextro, S. Althoff, T. Meyer, M. Brökelmann, K. Neumann, R.F. Reimann, K. Guth, D. Bolowski, in: Proceedings of 8th International Conference on Integrated Power Electronic Systems, 2014, pp. 175–180.
2013 | Conference Paper | LibreCat-ID: 9797
A friction based approach for modeling wire bonding
S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: IMAPS 2013, 46th International Symposium on Microelectronics, Orlando (Florida), USA, 2013.
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S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: IMAPS 2013, 46th International Symposium on Microelectronics, Orlando (Florida), USA, 2013.
2013 | Conference Paper | LibreCat-ID: 9799
Influences of Bonding Parameters on the Tool Wear for Copper Wire Bonding
P. Eichwald, W. Sextro, S. Althoff, F. Eacock, M. Schnietz, K. Guth, M. Brökelmann, in: 15th Electronics Packaging Technology Conference, 2013.
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P. Eichwald, W. Sextro, S. Althoff, F. Eacock, M. Schnietz, K. Guth, M. Brökelmann, in: 15th Electronics Packaging Technology Conference, 2013.