Heating Microdroplets on a Piezoelectric Substrate Using Intermittent Surface Acoustic Wave

A new method of heating microdroplets on a substrate is presented. An interdigital transducer was fabricated on a 128 0 yx-LiNbO 3 substrate using microelectric technology. Intermittent surface acoustic wave was excited by applying an amplitude-modulated signal to the interdigital transducer. The mi...

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Bibliographic Details
Published inFerroelectrics Vol. 486; no. 1; pp. 41 - 48
Main Authors Zhang, An-Liang, Zhang, Jian-Sheng, Fu, Xiang-Ting, Zha, Yan
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 17.09.2015
Taylor & Francis Ltd
Subjects
Acoustics
Heating
interdigital transducer
Intermittent surface acoustic wave
microdroplet
radiation
Temperature
Transducers
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Summary:A new method of heating microdroplets on a substrate is presented. An interdigital transducer was fabricated on a 128 0 yx-LiNbO 3 substrate using microelectric technology. Intermittent surface acoustic wave was excited by applying an amplitude-modulated signal to the interdigital transducer. The microdroplet to be heated was placed on the propagation path of the intermittent surface acoustic wave, which led to discontinuous acoustic streaming. Purified water and mineral oil microdroplets were demonstrated. Results show that the incremental temperature of the microdroplet is increased with the power of carrier signal, decreased with the frequency of modulation signal and the volume of the microdroplet.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2015.1100023