CUED Publications database

Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator

Prasad, A and Seshia, AA (2017) Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator. Applied Physics Letters, 110. ISSN 0003-6951

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Abstract

© 2017 Author(s). A piezoelectrically transduced micromechanical beam acoustic resonator is utilized to detect solid to liquid phase transitions in sub-nanoliter volume of Polyethylene Glycol (PEG) 1000. A lower frequency flexural mode and a higher frequency length-extensional mode are simultaneously monitored for changes in the device response. The phase transition of the PEG drop perturbs the acoustic loading of the resonator, bringing about characteristic and repeatable changes in the frequency response. The phase transitions in the drop are verified optically, and the resonant parameters are compared with the control case when the resonator is pristine without the presence of any PEG drop.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:26
Last Modified: 21 Nov 2017 03:51
DOI: