Hydrogen sensor: Detecting far-field scattering of nano-blocks (Mg, Ag, and Pd)
- Authors
- Shin, Eunso; Lee, Young Jin; Nam, Hyoungjoo; Kwon, Soon-Hong
- Issue Date
- Jul-2020
- Publisher
- MDPI AG
- Keywords
- Far-field; Hydrogen sensor; Plasmonic sensor; Scattering
- Citation
- Sensors (Switzerland), v.20, no.14, pp 1 - 11
- Pages
- 11
- Journal Title
- Sensors (Switzerland)
- Volume
- 20
- Number
- 14
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/48963
- DOI
- 10.3390/s20143831
- ISSN
- 1424-8220
1424-3210
- Abstract
- Hydrogen sensor technologies have been rapidly developing. For effective and safe sensing, we proposed a hydrogen sensor composed of magnesium (Mg), silver (Ag), and palladium (Pd) nano-blocks that overcomes the spectral resolution limit. This sensor exploited the properties of Mg and Pd when absorbing hydrogen. Mg became a dielectric material, and the atomic lattice of Pd expanded. These properties led to changes in the plasmonic gap mode between the nano-blocks. Owing to the changing gap mode, the far-field scattering pattern significantly changed with the hydrogen concentration. Thus, sensing the hydrogen concentration was able to be achieved simply by detecting the far-field intensity at a certain angle for incident light with a specific wavelength. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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