Báo cáo hóa học: "Ultra-Sensitivity Glucose Sensor Based on Field Emitter"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Ultra-Sensitivity Glucose Sensor Based on Field Emitter | Nanoscale Res Lett 2009 4 1141-1145 DOI S11671-009-9372-0 NANO EXPRESS Ultra-Sensitivity Glucose Sensor Based on Field Emitters Huibiao Liu Xuemin Qian Shu Wang Yuliang Li Yinglin Song Daoben Zhu Received 4 May 2009 Accepted 2 June 2009 Published online 14 June 2009 to the authors 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 M 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 H. Liu H X. Qian S. Wang Y. Li D. Zhu 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 e-mail liuhb@ X. Qian e-mail qianxuemin1813@ S. Wang e-mail wangshu@ Y. Li e-mail ylli@ D. Zhu e-mail dbzhu@ X. Qian Y. Song School of Physical Science and Technology Suzhou University 215006 Suzhou Jiangsu People s Republic of China Y. Song e-mail ylsong@ Introduction The glucose sensors are becoming an increasingly active area of research due to their applications in biological chemical analyze and clinical detection 1 . Many glucose sensors based on surface plasmon resonance SPR spectroscopy 2 3 fluorescence signal transmission FST 4-8 and electrochemical signal transduction EST 9-11 have been reported. However the sensitivity of these glucose sensors was mostly confined to the millimolar .

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