Implant electronics for intraocular epiretinal neuro-stimulators. - Torsten Lehmann; Nigel H. Lovell; Gregg J. Suaning; Philip Preston; Yan Tat Wong; Norbert Dommel; Louis H. Jung; Yashodhan Moghe; Kushal Das (ISCAS, 2008)

SOS current mirror matching at 4K: A brief study. - Kushal Das; Torsten Lehmann (ISCAS, 2010)

A cryogenic single electron transistor readout circuit: Practical issues and measurement considerations. - Kushal Das; Torsten Lehmann (ISCAS, 2012)

Mismatch insensitive automatic tuning control for the single electron transistor readout circuit. - Kushal Das; Torsten Lehmann (MWSCAS, 2013)

Accurate sensor readout circuitry for reliability measurement of hermetically sealed chip-scale biomedical implants. - Kushal Das; Torsten Lehmann; Cesar Ramos Rodrigues (MWSCAS, 2013)

A 2.6V Silicon-on Sapphire CMOS current imbalance sensing circuit for neurostimulation applications. - Cesar Ramos Rodrigues; Torsten Lehmann; Kushal Das; Gregg J. Suaning (MWSCAS, 2013)

Sub-Nanoampere One-Shot Single Electron Transistor Readout Electrometry Below 10 Kelvin. - Kushal Das; Torsten Lehmann; Andrew Steven Dzurak (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)