PMID- 28113955
OWN - NLM
STAT- MEDLINE
DCOM- 20171226
LR  - 20181202
IS  - 1940-9990 (Electronic)
IS  - 1932-4545 (Linking)
VI  - 11
IP  - 2
DP  - 2017 Apr
TI  - Linearization of CMOS Hot-Electron Injectors for Self-Powered Monitoring of 
      Biomechanical Strain Variations.
PG  - 446-454
LID - 10.1109/TBCAS.2016.2605444 [doi]
AB  - In our previous work we demonstrated that by eliminating regulation and 
      rectification modules from the energy harvesting pathway, the minimum activation 
      power of a piezoelectricity-driven hot-electron injector (p-HEI) can be reduced 
      down to a few nanowatts. As a result the p-HEI device could be used for 
      self-powered, in-vivo recording of biomechanical strain variations. However, for 
      large magnitudes of input strain energy, the response of the modified p-HEI 
      sensor was found to be quasi-linear with respect to the number of loading cycles, 
      which made the calibration of the sensor difficult across a wide variety of 
      biomedical applications. In this paper we propose a compensation circuit that is 
      able to linearize the response of the p-HEI injector over a wide range of input 
      power while maintaining a low activation threshold. The compensation circuit uses 
      a combination of a storage capacitor and a non-linear resistor which produces a 
      compressive input-output response required for linearization. Using prototypes 
      fabricated in a 0.5-mum bulk CMOS process we validate the functionality of the 
      injector and demonstrate that it can achieve a linear injection response for 
      input power ranging from 5 nW to 1.5 muW.
FAU - Zhou, Liang
AU  - Zhou L
FAU - Chakrabartty, Shantanu
AU  - Chakrabartty S
LA  - eng
PT  - Journal Article
DEP - 20161114
PL  - United States
TA  - IEEE Trans Biomed Circuits Syst
JT  - IEEE transactions on biomedical circuits and systems
JID - 101312520
SB  - IM
MH  - Biomechanical Phenomena
MH  - *Electric Power Supplies
MH  - Electrons
MH  - Equipment Design
MH  - *Stress, Mechanical
EDAT- 2017/01/24 06:00
MHDA- 2017/12/27 06:00
CRDT- 2017/01/24 06:00
PHST- 2017/01/24 06:00 [pubmed]
PHST- 2017/12/27 06:00 [medline]
PHST- 2017/01/24 06:00 [entrez]
AID - 10.1109/TBCAS.2016.2605444 [doi]
PST - ppublish
SO  - IEEE Trans Biomed Circuits Syst. 2017 Apr;11(2):446-454. doi: 
      10.1109/TBCAS.2016.2605444. Epub 2016 Nov 14.