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.

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.

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.