Chemical Sensing with Nanogap AND Chemi-mechanical Devices

TL;DR

This paper introduces a new class of low-power, highly sensitive chemiresistive sensors utilizing nanogap tunneling-junctions for bio-sensing, demonstrating effective electrical detection of organic molecules.

Contribution

It presents the design, fabrication, and characterization of batch-fabricated nanogap tunneling-junction sensors for bio-sensing applications, a novel approach in the field.

Findings

Successful electrical detection of organic molecules

Demonstration of bio-sensing capabilities with nanogap devices

Validation of device fabrication and characterization methods

Abstract

This article presents a new class of batch-fabricated, low-power and highly sensitive chemiresistive sensors. We first present the design, fabrication and characterization of batch-fabricated sidewall etched vertical nanogap tunnelling-junctions for bio-sensing. Using these devices we demonstrate the electrical detection of certain organic molecules from measurements of tunneling characteristics of target-mediated molecular junctions formed across nanogaps.