TITLE

<100> n-type metal-oxide-semiconductor field-effect transistor-embedded microcantilever sensor for observing the kinetics of chemical molecules interaction

AUTHOR(S)
Jian Wang; Wengang Wu; Ying Huang; Yilong Hao
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p124101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter reports a silicon microcantilever sensor with an embedded n-type metal-oxide-semiconductor field-effect transistor (nMOSFET) for observing the kinetics of chemical molecules interaction based on surface stress sensing principle. In the sensors, the silicon cantilevers with gold coating and the channels of the embedded-nMOSFETs are configured along <100> crystal orientation. The kinetics of and the surface stress from chemical interactions between acetone, ethanol, nitroethane, and thiols molecules are observed, respectively, which follow the Langmuir model. The output signals of the nMOSFET-embedded cantilever sensors induced by various targets are different, which implies that the devices may allow for gaining insights into the kinetics of intermolecular interactions.
ACCESSION #
44374764

 

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