In this talk we will discuss recent progress in the area of optical sensor arrays for chemical sensing. The first platform to be discussed will be an optoelectronic nose based on chemically sensitive optical dyes encoded onto silica beads for detection of volatile organic compounds in ambient air. The second platform will be a microfluidic optoelectronic sensor array for detection of dissolved volatile organic compounds in saliva as an early screening for stomach cancer. The third platform will focus on the design and implementation of high performance CMOS imagers that can measure both intensity and lifetime of chromophores with applications in lifetime-based chemical sensing. The imagers have been demonstrated for the detection of oxygen in water and biological samples. The talk will discuss key opportunities for optoelectronic sensors and the need for intimate integration with CMOS-based instrumentation.
Sameer Sonkusale is currently a Professor of Electrical and Computer Engineering at Tufts University with a joint appointment in the department of Biomedical Engineering. At Tufts University, Dr. Sonkusale directs an interdisciplinary research group Nano Lab with research focus on micro- and nano-electronics, nanoscale sensors, biomedical devices, circuits and systems. Prior to coming to Tufts, he was an Assistant Professor at Texas A&M University from 2002 to 2004. Sonkusale also held the position of visiting associate professor of medicine at Harvard Medical School and Brigham and Women’s Hospital for 2011-2012. He is currently affiliated with the Biomaterials Innovation Research Center, Wyss Insitute for Biologically Inspired Engineering, Harvard Medical School to explore applications in tissue engineering. Dr. Sonkusale received his B.E in Electrical and Electronics Engineering from BITS Pilani in India, and an MS and PhD in Electrical Engineering from the University of Pennsylvania. Dr. Sonkusale has received several awards including the National Science Foundation CAREER award in 2010, the National Academy of Engineering US Frontiers of Engineering Fellowship in 2015, the National Academy of Sciences Arab-America Frontiers fellowship in 2014 and 2016, and several best paper awards at international conferences and meetings such as BIOCAS 2014, FTM 2009, NANO 2008, SENSORS 2008, ISDRS 2009 to name a few. Dr. Sonkusale is on the editorial boards of Nature Scientific Reports, IEEE Transactions on Biomedical Circuits and Electronic Letters. He is the past chair of the Biomedical and Life sciences Circuits and Systems Technical Committee of the IEEE CAS Society. He is a senior member of the IEEE, OSA, MRS and AAAS.