Ultra-Sensitivity Glucose Sensor Based on Field Emitters
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
Nanoscale Research Letters 2009, 4:1141-1145 doi:10.1007/s11671-009-9372-0Published: 14 June 2009
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.