Current correlation functions for chemical sensors based on DNA decorated carbon nanotube

TL;DR

This paper investigates the current response of DNA-decorated carbon nanotubes to various gases, proposing a charge transfer model and analyzing correlation functions to enhance odor detection and DNA sequencing.

Contribution

It introduces a simple charge transfer model and uses correlation functions to create unique fingerprints for gas detection and DNA identification.

Findings

Correlation functions effectively characterize current sensitivity curves.

The model explains variations in current response for different odors.

Fingerprints derived from correlation functions enable odor and DNA sequence identification.

Abstract

The current characteristics of DNA decorated carbon nanotubes for different gas odors are studied. A simple model of charge transfer between the Gas-DNA-base complex and single wall carbon nanotube (SWCN) is proposed to explain the current response for different odors. The autocorrelation and two-point correlation functions are calculated for the current sensitivity curves. These correlation functions together with the current characteristics form finger-prints for detection of the odor and DNA sequence.