, Volume 4, Issue 10, pp 1141-1145,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 14 Jun 2009

Ultra-Sensitivity Glucose Sensor Based on Field Emitters

Abstract

A new glucose sensor based on field emitter of ZnO nanorod arrays (ZNA) was fabricated. This new type of ZNA field emitter-based sensor shows high sensitivity with experimental limit of detection of 1 nM glucose solution and a detection range from 1 nM to 50 μM in air at room temperature, which is lower than that of glucose sensors based on surface plasmon resonance spectroscopy, fluorescence signal transmission, and electrochemical signal transduction. The new glucose sensor provides a key technique for promising consuming application in biological system for detecting low levels of glucose on single cells or bacterial cultures.