Journal
IEEE SENSORS LETTERS
Volume 4, Issue 5, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSENS.2020.2991081
Keywords
Electromagnetic wave sensors; autonomous cars; hydrogen sensor; LIDAR; plasmonic sensing; remote sensing; water transmission window; weather-resistant plasmonic sensor
Funding
- National Key R&D Program of China [2017YFB1104700]
- National Natural Science Foundation of China [11674178]
- Jilin Provincial Science and Technology Development Project [20180414019GH]
- CAS-TWAS Presidential's Fellowship for International Doctorate Students
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In this letter, we have numerically proposed design of a novel, efficient, and weather condition independent metal-dielectric-metal metamaterial-based plasmonic hydrogen sensor. In the proposed device, the top and bottom metallic layers are palladium (Pd) nanodisc array and gold thin film, separated by a sandwiched dielectric aluminum oxide layer. The presence of hydrogen reversibly changes Pd to its hydride, which leads to a change in its optical properties. Only 4% (v/v) presence of hydrogen in the air can change optical reflectance from 95% to 14% at 905 nm wavelength, center of first water transmission window, that results for a weather-resistant hydrogen sensor with similar to 21.3% change in optical response for 1% change in hydrogen concentration with 76.5 s of response time for remote hydrogen sensing.
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