| Description |
-
Abstract: An electronic nose formed from a heterogeneous array of chemiresistors is presented. The sensor is fabricated in a novel, CMOS-compatible process by the sequential, dielectrophoretic assembly of a diverse set of chemiresistive nanomaterials (reduced graphene oxide, carbon nanotubes, and copper oxide nanowires) onto a silicon chip. Fabrication of the substrate and nanomaterials is detaile... read mored, as well is the process of sequential dielectrophoretic assembly to integrate the nanomaterials and substrate. Individually, the sensors show a high degree of sensitivity, demonstrating fractional changes of resistance of greater than 50% upon exposure to gas vapors. The entire chip with the ensemble of chemiresistors is shown to be an effective electronic nose, with distinguishable responses to ammonia, methanol, and toluene.
Thesis (M.S.)--Tufts University, 2013.
Submitted to the Dept. of Electrical Engineering.
Advisor: Sameer Sonkusale.
Committee: Tom Vandervelde, and Mehmet Dokmeci.
Keyword: Electrical engineering.read less
|
|---|
This object is in collection
