Silicon Nanowire based Platform Device for Chemical/Bio-chemical Sensing Applications


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Singhal, N and Prajesh , R and Santosh, M and Bose, SC (2018) Silicon Nanowire based Platform Device for Chemical/Bio-chemical Sensing Applications. In: IEEE Sensors 2018 Conference, October 28-31, 2018, New Delhi. (Submitted)

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arlbstmct-Silicon nanowires (SiNW) arrays arc fabricated using complementary metal-oxide-semiconductor (CMOS) compatible technology, for the detection of proteins, pH levels, cardiac biomarker troponin-T (cTnT), etc. The sensor output is fed to a ' current to frequency converter circuit'. a neuromorphic approach based low input-referred noise frequency con\'erter circuit is developed. The circuit generates a sequence of spikes with the help of Leaky integrate and fire neuron model (LIF) where firing delay maps to the strength of the stimulation across the arm •. The proposed read-out circuit is implemented using Tower Jazz Semiconductor's O.l l 8µ111 CMOS technology. The SiNW arrays are producing current change from 200pA to 1.6nA for a corresponding change of SO mV / O. Sng/ml protein concentration at the gate. The circuit is able to detect a change in current as low as SOPA and consuming 11µW power and 93xl 7µm2 silicon area.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aeywords-SiNW, LIF, CMOS, Neuromorphic.
Subjects: Microwave Tubes > Magnetrons
Divisions: Microwave Tubes
Depositing User: Mr. Rabin Chatterjee
Date Deposited: 27 Jul 2021 12:02
Last Modified: 27 Jul 2021 12:02

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