Open Access Nano Express

Ultra-Sensitivity Glucose Sensor Based on Field Emitters

Huibiao Liu1*, Xuemin Qian12, Shu Wang1, Yuliang Li1, Yinglin Song2 and Daoben Zhu1

Author Affiliations

1 CAS Key Laboratory of Organic Solid, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, People’s Republic of China

2 School of Physical Science and Technology, Suzhou University, 215006, Suzhou, Jiangsu, People’s Republic of China

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Nanoscale Research Letters 2009, 4:1141-1145  doi:10.1007/s11671-009-9372-0

Published: 14 June 2009

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.

Keywords:
ZnO nanorod arrays; Glucose sensor; Field emitter; High sensitivity