Enhanced sensitivity of a microfabricated resonator using a graphene-polystyrene bilayer membrane
SCIE
SCOPUS
- Title
- Enhanced sensitivity of a microfabricated resonator using a graphene-polystyrene bilayer membrane
- Authors
- Yun, M; Lee, E; Cho, K; Jeon, S
- Date Issued
- 2014-08-18
- Publisher
- AMER INST PHYSICS
- Abstract
- A graphene layer was synthesized using chemical vapor deposition methods and a polystyrene solution was spin-cast onto the graphene film. The graphene-polystyrene bilayer membrane was attached between the two tines of a microfabricated quartz tuning fork (QTF). The modulus of the graphene-polystyrene bilayer was measured to be twice that of a pristine polystyrene membrane. Exposure of the membrane-coated QTF to ethanol vapor decreased the resonance frequency of the microresonator. The bilayer membrane-coated QTF produced a frequency change that was three times the change obtained using a polystyrene membrane-coated QTF, with a lower degree of degradation in the Q factor. The limit of detection of the bilayer membrane-coated QTF to ethanol vapor was determined to be 20 ppm. (C) 2014 AIP Publishing LLC.
- Keywords
- QUARTZ-CRYSTAL MICROBALANCE; MECHANICAL-PROPERTIES; VAPOR DETECTION; TUNING FORK; SENSOR; COMPOSITES; POLYMERS; FILMS; GAS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14085
- DOI
- 10.1063/1.4893741
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 105, no. 7, page. 73116, 2014-08-18
- Files in This Item:
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