CMOS integrated avalanche photodiodes and frequency-mixing optical sensor front end for portable NIR spectroscopy instruments. - Ruida Yun; Chirag C. Sthalekar; Valencia M. Joyner (EMBC, 2011)

A CMOS optical sensor array for tissue absorption and scattering parameter extraction using multi-distance near infrared spectroscopy. - Chirag C. Sthalekar; Valencia Koomson (BioCAS, 2012)

Optical Characterization of Tissue Phantoms Using a Silicon Integrated fdNIRS System on Chip. - Chirag C. Sthalekar; Yun Miao; Valencia Joyner Koomson (IEEE Trans. Biomed. Circuits Syst., 2017)