[1] S. Stahl, M. Wolf, E. Kühnicke, E. Leipner and C. Kupsch, Dynamic Spatial Discretisation of Sound Field Calculation of Arbitrary Shaped Sources via Generalized Ray Theory, Poster at DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, Denmark, 2025. DOI: https://doi.org/10.71568/dasdaga2025.090

[2] E. Kühnicke, S. Stahl, M. Wolf, E. Leipner and C. Kupsch, Focusing Properties of Annular, Line and Matrix Arrays for Ultrasound Thermometry, Paper presented at DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, Denmark, 2025. DOI: https://doi.org/10.71568/dasdaga2025.266

[3] C. Kupsch, Y. Moshaei-Nezhad, M. Wolf and E. Kühnicke, A Simulation-Based Comparison of Beamforming Strategies for Local Speed of Sound Estimation Using Annular Arrays, Paper presented at DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, Denmark, 2025. DOI: https://doi.org/10.71568/dasdaga2025.073

[4] M. Wolf, E. Leipner, P. Hoffrogge, E. Kühnicke, P. Czurratis and C. Kupsch, Signal-Based Estimation of Reconstruction Parameters for Synthetic Aperture Focusing in Scanning Acoustic Microscopy, Paper presented at DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, Denmark, 2025.

[5] Sablowski, J., Asghar, M. T., Khan, M. S., Szucki, M., & Kupsch, C. (2025). Ultrasonic time-of-flight measurements for inline gas analysis and process monitoring in the phenolic urethane cold box process. Journal of Sensors and Sensor Systems, 14(1), 99-109. DOI: https://doi.org/10.5194/jsss-14-99-2025

[6] E. Leipner, M. Wolf and C. Kupsch, Characterization of high-frequency ultrasonic transducers using S-parameters: Separation of electrical and acoustic responses, Mechanical Systems and Signal Processing, vol. 238, 113172, 2025, DOI: 10.1016/j.ymssp.2025.113172.

[7] S. Eckart, J. Sablowski, L. Schierling, R. Kunz, H. Krause and C. Kupsch, Combustion Control of Hydrogen-Natural Gas Mixtures and Inline Gas Analysis with Ultrasonic Time-of-Flight Measurement, Poster at the German Flame Day 2025, Paderborn, Germany, 2025

[8] D. Weik, N. Schurig, R. Kunz, L. Schierling, C. Kupsch, Towards a Wearable Ultrasound System as a Human-Machine-Interface for Collaborative Robotics, in International Congress on Ultrasonics, Padderborn, Germany, 2025.

[9] E. Leipner, M. Wolf, S. König, P. Hoffrogge, P. Czurratis, C. Kupsch, S-Parameter based Ultrasonic Transducer Characterisation: a case study for high-frequency SAM-Transducers, in International Congress on Ultrasonics, Padderborn, Germany, 2025.

[10] M. Wolf, E. Leipner, S. König, P. Hoffrogge, P. Czurratis, C. Kupsch, 3D imaging with Scanning Acoustic Microscopy - A comparison of the focusing capabilities of array transducers and Synthetic Aperture with highly focused transducers, in International Congress on Ultrasonics, Padderborn, Germany, 2025.

[11] R. Kunz, L. Schierling, C. Kupsch, An Open-Source Platform for Distributed Ultrasonic Flow Measurements in Complex Three-Dimensional Flows, in International Congress on Ultrasonics, Padderborn, Germany, 2025.

[12] C. Kupsch, N. Schurig, R. Kunz, L. Schierling, D. Weik, From Signals to Meaning in Wearable Ultrasound: Systems, Architectures and Applications, Opening Keynote talk at UltrasounDD Symposium, Dresden, Germany, 2025.

[13] S. Barth, H. Bartzsch, J. Neidhardt, T. Schütte, J.-P. Urbach, M. Nestler, C. Käpplinger, F. Neuhaus, M. Glauer, J.-O. Perschewski, E. Leipner, and C. Kupsch (2025). Digitalisation of magnetron sputter processes for deposition of piezoelectric thin films. PiezoMEMS 2024, Poster P02-03, University of Hyogo, Japan, 2025

[14] Sablowski, J., Eckart, S., Schierling, L., Kunz, R., Krause, H., & Kupsch, C. (2025). Ultrasonic time-of-flight measurement of hydrogen blending ratios for industrial combustion applications. International Journal of Hydrogen Energy, 188, 152136. DOI: https://doi.org/10.1016/j.ijhydene.2025.152136

[1] M. Khan, N. Mrowka, J. Sablowski, M. Asghar, C. Kupsch, and M. Szucki, "Investigations of
the Cold Box Core Curing Stage Using an Augmented Simulation Approach," International
Journal of Metalcasting, pp. 1-17, 2024.

[2] E. Kühnicke, E. Leipner, M. Wolf, and C. Kupsch, "Calculation of the impulse response of an extended
source in layered solids using transient Green's functions,"
in DAGA 2024 - 50th Annual Meeting on Acoustics, DEGA, 2024, pp. 1-4.
24

[3] R. Kunz, L. Schierling and C. Kupsch, "Development of an open source platform for distributed
flow measurements with smart networked ultrasonic sensors," in Workshop Messtechnische
Anwendungen von Ultraschall, (Kloster Drübeck, Ilsenburg, Germany, 18 June
2024), 2024.

[4] J. Sablowski, J. Bulling, Y. Lugovtsova, J. Prager and C. Kupsch, "Surface monitoring
of structured plates using guided wave measurement concept and perspectives for insitu
applications," in DAGA 2024 - 50th Annual Conference on Acoustics, DEGA, 2024, pp. 1-4.

[5] M. Wolf, P. Hoffrogge, M. Wiedenmann, S. Oberhoff, C. Kupsch, J. Krinke and P. Czurratis,
"Semi-supervised parameter estimation for Synthetic Aperture Focusing in Scanning Acoustic
Microscopy for a 3D reconstruction of plastic moulded electronic devices," in 35 European
Symposium on Reliability of Electron Devices, Failure Physics and Analysis, 2024, pp. 1-4.

[6] M. Wolf, A. Nair, P. Hoffrogge, E. Kühnicke, C. Hollerith, K. Pressel, P. Czurratis, C. Kupsch
and B. Klang, "Modern signal processing methods in ultrasound microscopy for
improved imaging of microelectronic systems," in DAGA 2024 - 50th Annual Conference
for Acoustics, DEGA, 2024, pp. 1-4.

[1] E. Kühnicke, M. Wolf, E. Leipner, and C. Kupsch, "Wave Propagation in Layered Media using Transient GREEN's Functions - A Discussion of Effects of the Geometry on the Impulse Response," in 15th International Conference on Theoretical and Computational Acoustics, (Monterey, California, USA), 2023.

[2] E. Kühnicke, M. Wolf, E. Leipner, and C. Kupsch, "Sonographic methods of temperature monitoring," in 46th Trilateral Meeting of DEGUM, (Mainz, Germany), 2023.

[3] C. Kupsch and M. Wolf, "Nonlinear beamforming for scanning acoustic microscopy imaging through scattering surfaces," in 2023 IEEE International Ultrasonics Symposium (IUS), IEEE, 2023, pp. 1-4.

[4] J. Sablowski, Y. Lugovtsova, J. Bulling, and C. Kupsch, "Experimental study of ultrasonic guided waves in a bipolar plate of a fuel cell," in 2023 IEEE International Ultrasonics Symposium (IUS), IEEE, 2023, pp. 1-4.

[5] E. Leipner, M. Wolf, Z. Zhao, E. Kühnicke, and C. Kupsch, "Automated echo separation in scanning acoustic microscopy for testing multi-layered electronic devices," in European Conference on Non-Destructive Testing, (Lisbon, Portugal), 2023.

[6] M. Wolf, P. Hoffrogge, E. Kühnicke, Silvia Schuhmacher, Harald Riegel, Peter Czurratis, and C. Kupsch, "Self-calibrating SAFT algorithm for the inspection of electronic devices using scanning acoustic microscopy," in European Conference on Non-Destructive Testing, (Lisbon, Portugal), 2023.

[7] J. Sablowski and C. Kupsch, "Ultrasonic sensor system for water localisation in fuel cells: Investigation of operational conditions," in SMSI 2023 - Sensor and Measurement Science International, (Nuremberg, Germany, May 8, 2023), 2023.

[1] J. Sablowski, Z. Zhao, and C. Kupsch, "Ultrasonic Guided Waves for Liquid Water Localisation in Fuel Cells: An Ex Situ Proof of Principle," Sensors, vol. 22, no. 21, p. 8296, 2022, doi: 10.3390/s22218296.

[2] M. S. Khan, N. M. Mrowka, M. Szucki, C. Kupsch, and M. T. Asghar, "Multi-tool Numerical Simulation approach for PU Cold Box process," in 2022 International Conference of Processes Modelling and Experimental Engineering, (Rytro, Poland), Sep. 2022.

[3] M. T. Asghar, C. Kupsch, T. Frank, and F. Schwierz, "Low-cost strain gauge integration in ceramics for force sensor applications," in 2022 45th International Spring Seminar on Electronics Technology (ISSE), IEEE, 2022, pp. 1-7.

[4] C. Kupsch, "Bildgebende Untersuchung von Materialien mittels akustischer Mikroskopie," in Erstes Kolloquium des Zentrum für effiziente Hochtemperatur-Stoffwandlung (ZeHS), TU Bergakademie Freiberg, (Centre for Efficient High-Temperature Material Conversion (ZeHS), TU Bergakademie Freiberg, Freiberg, Germany, Jun. 30, 2022), 2022.

[5] E. Leipner, M. Wolf, E. Kühnicke, and C. Kupsch, "Signal prediction for simulation-based measurement methods in ultrasound microscopy," in Workshop Messtechnische Anwendungen von Ultraschall, (Kloster Drübeck, Ilsenburg, Germany, Jun. 21, 2022), 2022.

[6] J. Sablowski and C. Kupsch, "Localisation of water droplets on the flow field of a fuel cell using guided waves," in Workshop Messtechnische Anwendungen von Ultraschall, (Kloster Drübeck, Ilsenburg, Germany, Jun. 21, 2022), 2022.

[7] M. Wolf, P. Hoffrogge, E. Kühnicke, P. Czurratis, and C. Kupsch, "Inspection of multilayered electronic devices via scanning acoustic microscopy using synthetic aperture focusing technique," in 2022 IEEE International Ultrasonics Symposium (IUS), IEEE, 2022, pp. 1-4.

[1] Weik, D., Nauber, R., Kupsch, C., Büttner, L., & Czarske, J. (2021). Uncertainty quantification of ultrasound image velocimetry for liquid metal flow mapping. IEEE Transactions on Instrumentation and Measurement, 70, 1-11.

[1] C. Kupsch, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Ultrasound super-resolution flow measurement of suspensions in narrow channels," IEEE Transactions on Ultrasonics, Ferroelectrics, and
Frequency Control, 2020.

[2] C. Kupsch, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Flow investigation of complex suspension electrodes for battery applications using ultrasound imaging velocimetry," Experimental Thermal and Fluid Science, vol. 109, p. 109 886, 2019, issn: 0894-1777.

[3] C. Kupsch, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Super-resolution ultrasound flow imaging of suspensions in narrow channels," in International Congress on Ultrasonics, (Bruges, Belgium), 2019.

[4] C. Kupsch, D. Weik, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Vector flow imaging of a highly loaded suspension in a zinc-air flow battery model," IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 66, no. 4, pp. 761-771, 2019.

[5] D. Weik, C. Kupsch, R. Nauber, L. Büttner, and J. Czarske, "Uncertainty comparison of velocity estimators for ultrasound flow imaging in narrow channels/messunsicherheitsvergleich von geschwindigkeitsschätzern 2/4 der ultraschallströmungsbildgebung in schmalen kanälen," tm-Technisches Messen, vol. 86, no. s1, pp. 7-11, 2019.

[6] M. Kalibatas, R. Nauber, C. Kupsch, and J. Czarske, "Flow field imaging with ultrasonic guided waves for exploring metallic melts," IEEE transactions on ultrasonics, ferroelectrics, and frequency control, vol. 65, no. 1, pp. 112-119, 2018.

[7] L. Feierabend and C. Kupsch, "Macroscopic Flow Simulation of Multiphase Suspension Electrodes for Zinc-Air Batteries," in 16th multiphase flow conference, (Helmholtz-Zentrum Dresden-Rossendorf, Dresden,Germany, Nov. 15, 2018), 2018.

[8] C. Kupsch, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Super-resolution ultrasound flow measurement of the non-Newtonian multiphase suspension in a zinc-air flow battery," in 16th multiphase flow conference, (Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, Nov. 15, 2018), 2018.

[9] C. Kupsch, F. Schmieder, L. Büttner, J. Czarske, and L. Feierabend, "Optical and acoustic flow measurement systems for fuel cells and flow batteries," in AiF-Brennstoffzellen-Allianz Workshop, (ZBT GmbH, Duisburg, Germany, Jun. 27, 2018), 2018.

[10] C. Kupsch, L. Feierabend, R. Nauber, L. Büttner, and J. Czarske, "Flowmapping in a model of a secondary hydraulic zinc-air battery," in International workshop on liquid metal battery fluid dynamics, (QF Hotel, Dresden, Germany, May 15, 2017), 2017.

[11] C. Kupsch, R. Nauber, L. Büttner, J. Czarske, and L. Feierabend, "Ultrasound flow mapping in a model of a secondary hydraulic zinc-air battery," in 2017 IEEE International Ultrasonics Symposium (IUS), IEEE, 2017, pp. 1-4.

[12] D. Dawidowski, R. Nauber, C. Kupsch, L. Büttner, and J. Czarske, "Modular ultrasound measurement technique and its application in time reversal experiments," in XXX. Messtechnisches Symposium, Walter de Gruyter GmbH & Co KG, 2016, p. 29.

[13] L. Feierabend, C. Kupsch, R. Nauber, S. Burgmann, L. Büttner, B. Oberschachtsiek, J. Czarske, and A. Heinzel, "Ultrasonic measurement and modelling of magnetohydraulic flows in zinc slurry batteries," in 9th Workshop of the AiF Fuel Cell Alliance, (ZBT GmbH, Duisburg, Germany, Jun. 21, 2016), 2016.

[14] C. Kupsch and J. Czarske, "Acoustic characterisation of a suspension," in Workshop Ultraschallmesstechnik, (Bad Schandau, Germany, Oct. 26, 2016), 2016.

[15] C. Kupsch and J. Czarske, "Multimodal ultrasonic measurement system for the investigation of liquid metal flows in semiconductor crystal growth," in Workshop Messtechnische Anwendungen von Ultraschall, (Kloster Drübeck, Ilsenburg, Germany, Jun. 21, 2016), 2016.

[16] K. Mäder, R. Nauber, H. Beyer, A. Klaß, C. Kupsch, N. Thieme, L. Büttner, and J. Czarske, "Research Platform for Adaptive Ultrasound Flow Mapping in Liquid Metals," in 18th GMA/ITG Symposium Sensors and Measurement Systems, (Nuremberg, Germany, May 11, 2016), 2016.

[17] R. Nauber, H. Beyer, K. Mäder, C. Kupsch, N. Thieme, L. Büttner, and J. Czarske, "Modular Ultrasound Flow Mapping in Liquid Metals," in 18. Czarske, "Modular ultrasound velocimeter for adaptive flow mapping in liquid metals," in 2016 IEEE International Ultrasonics Symposium (IUS), IEEE, 2016, pp. 1-4.

[18] A. Fischer, C. Kupsch, J. Gürtler, and J. Czarske, "Volumetric flow measurements using a plenoptic high-speed camera," tm-Technisches Messen, vol. 83, no. 1, pp. 9-15, 2016.

[19] A. Fischer, C. Kupsch, J. Gürtler, and J. Czarske, "High-speed light field camera and frequency division multiplexing for fast multi-plane velocity measurements," Optics express, vol. 23, no. 19, pp. 24 910-24 922, 2015.