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

Prasad, A. and Seshia, A.A. (2017) Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator. Applied Physics Letters, 110(13), 134101. (doi:10.1063/1.4979086)

[img]
Preview
Text
204440.pdf - Published Version

1MB

Abstract

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:Articles
Additional Information:This research was supported by the Cambridge Trusts.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Prasad, Dr Abhinav
Authors: Prasad, A., and Seshia, A.A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN:0003-6951
ISSN (Online):1077-3118
Copyright Holders:Copyright © 2017 AIP Publishing
First Published:First published in Applied Physics Letters 110(13): 134101
Publisher Policy:Reproduced in accordance with the publisher copyright policy

University Staff: Request a correction | Enlighten Editors: Update this record