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Schottky‐Gated Probe‐Free ZnO Nanowire Biosensor
Author(s) -
Yeh PingHung,
Li Zhou,
Wang Zhong Lin
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902172
Subject(s) - ohmic contact , materials science , nanosensor , biosensor , nanowire , nanotechnology , schottky diode , schottky barrier , optoelectronics , biomolecule , diode , layer (electronics)
A nanowire‐based nanosensor for detecting biologically and chemically charged molecules that is probe‐free and highly sensitive is demonstrated. The device relies on the nonsymmetrical Schottky contact under reverse bias (see figure), and is much more sensitive than the device based on the symmetric ohmic contact. This approach serves as a guideline for designing more practical chemical and biochemical sensors.