Novel neuromorphic CMOS device array for biochemical charge sensing.
Novel neuromorphic CMOS device is proposed as a biochemical charge sensor. The basic architecture of an extended floating-gate field-effect transistor (FET) is modified to be suited for large-array applications. The FET has a floating-gate that is umbrella-shaped (UGFET), maximizing its charge sensing area in a much reduced transistor area. Compared to previous chemoreceptive FET-based charge sensors, the UGFET shows improved scalability and sensitivity. 3-D device simulations validate the UGFET model. The design is fabricated in a standard CMOS process and characterized. Experimental results on biochemical charge sensing are presented employing the transconductance and subthreshold measurement schemes.
Pandey
Santosh
S
Department of Electrical and Computer Engineering, Iowa State University, Ames, IA, USA.
Daryanani
Michelle
M
Chen
Baozhen
B
Tao
Chengwu
C
D015374:Biosensing Techniques / Q000295:instrumentation*; D004563:Electrochemistry / Q000295:instrumentation; D004867:Equipment Design; D046228:Microarray Analysis / Q000295:instrumentation*; D014173:Transistors, Electronic