Chapter 15, Problem 15.52P

Interpretation Introduction

Interpretation:

The purpose of the chemically sensitive field effect transistor in measuring the sequence of nucleotide bases in DNA has to be explained.

Concept Introduction:

Chemically sensitive field effect transistor:

The base of the field effect transistor is constructed of $\text{pi-Si}$ with two n-type regions known as source and drain. Conductive metal gate between source and drain is overcoated by an insulting surface layer of ${\text{SiO}}_{\text{2}}$. The gate potential controls the current between source and drain.