• K. Kavitha
• Dr.P. Shanmugaraja
• R.P. Bhenesha shree

In this paper, we compare the pH sensitivity of a double gate pH sensor based on front-gate operation and the back-gate operation. Numerical and compact modeling illustrates a simple way to enhance the sensitivity of double-gate field effect transistor (DGFET) sensor. The simulation approach is presented to improve the pH sensitivity. Field effect devices are used for biomolecule detection and pH sensitivity. The model is derived from Poisson’s equation in each region and it found the back gated operation of DGFET allows significant signal amplification compare with conventional ISFET. This simulation work concludes with finding the higher pH sensitivity of DGFET sensor.

pH sensitivity, DGFET, Biomolecule.

"SENSITIVITY ENHANCEMENT IN DOUBLE GATE FIELD EFFECT TRANSISTOR pH SENSOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.405-409, November-2018, Available :http://www.jetir.org/papers/JETIR1811958.pdf

"SENSITIVITY ENHANCEMENT IN DOUBLE GATE FIELD EFFECT TRANSISTOR pH SENSOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp405-409, November-2018, Available at : http://www.jetir.org/papers/JETIR1811958.pdf