Chemical Sensing with SWNT FETs
SWNTs possess unique properties that make them excellent candidates for sensing technology. Because the properties of a SWNT depend sensitively on its structure and because a SWNT is composed entirely of surface atoms, a slight variation of its environment tends to have a noticeable effect on its properties. Many types of sensors have been demonstrated using nanotubes, such as chemical [1, 2, 3], biological , flow , strain , pressure [7, 8], thermal , and mass  sensors. In this chapter, we will focus on the chemical sensing using SWNT FET devices.
KeywordsSurface Coverage Schottky Barrier Metal Contact Conductance Change Schottky Barrier Height
Part of the work presented in this chapter was based on Dr. Jing Kong’s thesis with Prof. Hongjie Dai at Stanford University. We deeply appreciate the valuable advices and contribution from Prof. Dai. The authors would also like to thank Prof. Anantha Chandrakasan at MIT for the encouragement and support for this work. This work was funded in part by the MARCO IFC Focus Research Center Program and Intel Corporation.
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