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Author Balashov, S.M. ♦ Balachova, O.V. ♦ Braga, A.V.U. ♦ Bazetto, M.C.Q. ♦ Pavani Filho, A.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2013
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Films ♦ Surface acoustic waves ♦ Adsorption ♦ Surface treatment ♦ Atomic layer deposition ♦ Humidity ♦ Liquids
Abstract Graphene oxide (GO) thin films with partial surface coating were deposited onto the surface of 160 MHz quartz SAW delay lines by SAW atomization of submicroliter droplets of GO aqueous dispersions. The delay lines were used as sensitive elements of the SAW relative humidity (RH) sensors for monitoring the process of saturation of vapor pressure of water in an enclosed volume. To explain the RH time dependence, we suggest a model, which takes into account two processes: fast adsorption of water molecules by the surface of GO, described by the first order kinetic equation, and slow volumetric adsorption, described by linear kinetic equation. The parameters of kinetic equations of the saturation process were estimated experimentally for the coatings obtained by different number of atomizations and for eleven different RH standards.
Description Author affiliation: Dept. of Microsyst., Center for Inf. Technol. Renato Archer - CTI, Campinas, Brazil (Balashov, S.M.; Balachova, O.V.; Braga, A.V.U.; Bazetto, M.C.Q.; Pavani Filho, A.)
ISBN 9781467346429
ISSN 19300395
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2013-11-03
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 848.24 kB
Page Count 4
Starting Page 1
Ending Page 4


Source: IEEE Xplore Digital Library