TY - GEN
T1 - Differential fowler-nordheim tunneling dynamical system for attojoule sensing and recording
AU - Mehta, Darshit
AU - Raman, Barani
AU - Chakrabartty, Shantanu
N1 - Publisher Copyright:
© 2019 IEEE
PY - 2019
Y1 - 2019
N2 - Dynamical systems that evolve unidirectionally with respect totime provide a natural mechanism for implement-inga time-domain, near-zero-threshold energyrectifier.Inthis paper we implement sucha dynamical systemusinga pair of differential, leakyfloating-gatesand demonstrate that the circuit cansenseand record signalsof interest while compensating for environmental variations. A Fowler-Nordheim (FN) tunneling current hasbeenusedto implement the leakage process,which we experimentally showcanbe modulated bysignalsatenergy levelsbelowfemtojoules.Atthislevelofenergy,the proposed FN-systemcouldbe self-powered using different typesof biopotential energysourceslike intra-cellular potentials, a feature that was notpossiblewithpreviously reported recorders. Furthermore, thedegreeof modulation isshowntobea function ofthe input intensity aswellas time-of-occurrence, whichopensup thepossibilityofusing reconstruction techniques to reconstruct the input signalfrom measurement of multiple sensingdevices. Usingdevices fabricated ina0.5 11m standard CMOSprocess,we demonstrate recording of6mVeventswith retention capability lasting over30 minutes.
AB - Dynamical systems that evolve unidirectionally with respect totime provide a natural mechanism for implement-inga time-domain, near-zero-threshold energyrectifier.Inthis paper we implement sucha dynamical systemusinga pair of differential, leakyfloating-gatesand demonstrate that the circuit cansenseand record signalsof interest while compensating for environmental variations. A Fowler-Nordheim (FN) tunneling current hasbeenusedto implement the leakage process,which we experimentally showcanbe modulated bysignalsatenergy levelsbelowfemtojoules.Atthislevelofenergy,the proposed FN-systemcouldbe self-powered using different typesof biopotential energysourceslike intra-cellular potentials, a feature that was notpossiblewithpreviously reported recorders. Furthermore, thedegreeof modulation isshowntobea function ofthe input intensity aswellas time-of-occurrence, whichopensup thepossibilityofusing reconstruction techniques to reconstruct the input signalfrom measurement of multiple sensingdevices. Usingdevices fabricated ina0.5 11m standard CMOSprocess,we demonstrate recording of6mVeventswith retention capability lasting over30 minutes.
UR - http://www.scopus.com/inward/record.url?scp=85066801927&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2019.8702685
DO - 10.1109/ISCAS.2019.8702685
M3 - Conference contribution
AN - SCOPUS:85066801927
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - 2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019
Y2 - 26 May 2019 through 29 May 2019
ER -