| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1670884 | Thin Solid Films | 2008 | 5 Pages |
Abstract
Gas sensing properties were investigated using localized surface plasmons (LSPs) and a quartz crystal microbalance (QCM). A thin film of polyvinylalcohol (PVA) and gold colloid (20Â nm in diameter) was deposited on the QCM substrate, and the gas responses of the optical absorption of gold colloid LSP and the QCM frequency were simultaneously observed. Vapors of water, ethanol and methylamine in N2 were detected. The optical absorption spectra changed with the gas adsorption and desorption, and the gas response could be repeatedly observed. Furthermore, the relationship between the QCM frequency and the optical properties depended on the vapor species. Hybrid sensing can be used for detection and discrimination of various vapor adsorptions.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Kazunari Shinbo, Hiroyuki Furukawa, Yasuo Ohdaira, Keizo Kato, Futao Kaneko,