Title :
A novel floating-gate biosensing device with controlled charge-modulation
Author :
Tao, Chengwn ; Chen, Baozhen ; William, Sumarlin ; Pandey, Santosh
Author_Institution :
Iowa State Univ., Ames
Abstract :
A novel charge-modulated biosensing device is proposed. The basic architecture of an extended floating-gate field-effect transistor (FET) is modified for VLSI applications. The floating-gate is umbrella-shaped (UGFET), maximizing the charge sensing area in a much reduced device area. Compared to previous extended floating-gate structures, the UGFET shows improved scalability and sensitivity. Extensive device simulations validate the UGFET model. The design is fabricated in a standard CMOS process and characterized with electrolytes and charged solutions. Transconductance measurements confirm its high sensitivity and workability.
Keywords :
VLSI; biosensors; field effect transistors; UGFET; VLSI applications; controlled charge modulation; field effect transistor; floating-gate biosensing device; transconductance; Biosensors;
Conference_Titel :
Life Science Systems and Applications Workshop, 2007. LISA 2007. IEEE/NIH
Conference_Location :
Bethesda, MD
Print_ISBN :
978-1-4244-1813-8
Electronic_ISBN :
978-1-4244-1813-8
DOI :
10.1109/LSSA.2007.4400933
