Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator
Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator
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
MEMS, Sensor, Phase transition, resonator
Prasad, Abhinav
5f3fa807-576d-4b83-b4b3-204647eec98f
Seshia, Ashwin
802baede-ab79-4a00-8381-7b02cfa0bdc0
27 March 2017
Prasad, Abhinav
5f3fa807-576d-4b83-b4b3-204647eec98f
Seshia, Ashwin
802baede-ab79-4a00-8381-7b02cfa0bdc0
Prasad, Abhinav and Seshia, Ashwin
(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).
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
Text
Detection of phase transition in polyethylene glycol using a multimodal micromechanical acoustic resonator
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Accepted/In Press date: 9 March 2017
e-pub ahead of print date: 27 March 2017
Published date: 27 March 2017
Keywords:
MEMS, Sensor, Phase transition, resonator
Identifiers
Local EPrints ID: 413701
URI: http://eprints.soton.ac.uk/id/eprint/413701
ISSN: 0003-6951
PURE UUID: b4b2b942-199b-4d3a-b4d9-6441b2f861cb
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Date deposited: 31 Aug 2017 16:31
Last modified: 16 Mar 2024 05:22
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Author:
Abhinav Prasad
Author:
Ashwin Seshia
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