Sensitive Hydrogen Sensors Based on Gold-Palladium Double Nanoblock
- Authors
- Lee, Tae-Woo; Lee, Da Eun; Kwon, Soon-Hong
- Issue Date
- Nov-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Optical sensing and sensors; resonators; surface plasmons
- Citation
- IEEE PHOTONICS TECHNOLOGY LETTERS, v.26, no.22, pp 2232 - 2235
- Pages
- 4
- Journal Title
- IEEE PHOTONICS TECHNOLOGY LETTERS
- Volume
- 26
- Number
- 22
- Start Page
- 2232
- End Page
- 2235
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/11597
- DOI
- 10.1109/LPT.2014.2351403
- ISSN
- 1041-1135
1941-0174
- Abstract
- We suggest a new plasmonic hydrogen sensor based on a metal-air-metal cavity structure. The proposed cavity structure shows a high sensing performance with a large resonant wavelength shift of 84 nm due to strong plasmonic coupling at an air gap size of 8 nm. The cavity resonance has a narrow linewidth of 72 nm by suppressing radiational loss. Figure of merit, defined by the ratio between the wavelength shift and linewidth, is estimated to be 1.17, which means that the cavity can detect hydrogen gas effectively. In addition, optical losses in the plasmonic cavity, radiational loss, and metallic absorption losses are separately investigated as a function of air gap size.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.