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A single ZnO coated nanospring chemiresistor.

A redox chemical sensor (chemiresistor) was constructed with a single ZnO coated silica nanospring. The chemiresistor response to toluene vapor as a function of the sensor temperature ([T.sub.NS]) and vapor temperature ([T.sub.V]) was observed and analyzed. During the experiment the maximum sensitivity of the single ZnO coated nanospring device was achieved at the sensor temperature ([T.sub.NS]) being 310[degrees]C and at the vapor temperature ([T.sub.V]) of 250[degrees]C. A comparison of the electrical response characteristics of a single ZnO coated nanospring device with those characteristics of a ZnO coated flat surface was conducted in orderto demonstrate the influence of the chemiresistor geometry on the sensor sensitivity. A computational model was developed to simulate an electrical response of the hexagonal polycrystalline ZnO structures deposited on the substrates of different geometries.

Pavel V. Bakharev and David N. Mcllroy

Department of Physics, University of Idaho, Moscow, ID 83844-0903

E-mails: bakh8413@vandals.uidaho.edu (P.B.); dmcilroy@uidaho.edu (D.M.)

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Title Annotation:56TH ANNUAL SYMPOSIUM OF THE IDAHO ACADEMY OF SCIENCE: THEME: ENERGY, MATERIALS, AND NANOTECHNOLOGY
Author:Bakharev, Pavel V.; McIlroy, David N.
Publication:Journal of the Idaho Academy of Science
Article Type:Author abstract
Date:Dec 1, 2014
Words:167
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