• PhotoniX
  • Vol. 4, Issue 1, 20 (2023)
Jongsu Lee1、2, Eui-Sang Yu3, Taehyun Kim4, In Soo Kim5, Seok Chung4、6, Seung Jae Kwak7, Won Bo Lee7, Yusin Pak1、*, and Yong-Sang Ryu8、9、**
Author Affiliations
  • 1Sensor System Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
  • 2Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Republic of Korea
  • 3Smart Materials Research Section, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea
  • 4Department of Micro/Nano Systems, Korea University, 02841 Seoul, Republic of Korea
  • 5Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
  • 6School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
  • 7School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
  • 8Interdisciplinary Program in Precision Public Health, Korea University, Seoul 02481, Republic of Korea
  • 9School of Biomedical Engineering, Korea University, Seoul 02481, Republic of Korea
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    DOI: 10.1186/s43074-023-00097-1 Cite this Article
    Jongsu Lee, Eui-Sang Yu, Taehyun Kim, In Soo Kim, Seok Chung, Seung Jae Kwak, Won Bo Lee, Yusin Pak, Yong-Sang Ryu. Naked-eye observation of water-forming reaction on palladium etalon: transduction of gas-matter reaction into light-matter interaction[J]. PhotoniX, 2023, 4(1): 20 Copy Citation Text show less

    Abstract

    Palladium is the most prominent material in both scientific and industrial research on gas storage, purification, detection, and catalysis due to its unique properties as a catalyst and hydrogen absorber. Advancing the dynamic optical phenomena of palladium reacting with hydrogen, transduction of the gas-matter reaction into light-matter interaction is attempted to visualize the dynamic surface chemistry and reaction behaviors. The simple geometry of the metal-dielectric-metal structure, Fabry–Perot etalon, is employed for a colorimetric reactor, to display the catalytic reaction of the exposed gas via water-film/bubble formation at the dielectric/palladium interface. The adsorption/desorption behavior and catalytic reaction of hydrogen and oxygen on the palladium surface display highly repeatable and dramatic color changes based on two distinct water formation trends: the foggy effect by water bubbles and the whiteout effect by water film formation. Simulations and experiments demonstrate the robustness of the proposed Fabry–Perot etalon as an excellent platform for monitoring the opto-physical phenomena driven by heterogeneous catalysis.
    Jongsu Lee, Eui-Sang Yu, Taehyun Kim, In Soo Kim, Seok Chung, Seung Jae Kwak, Won Bo Lee, Yusin Pak, Yong-Sang Ryu. Naked-eye observation of water-forming reaction on palladium etalon: transduction of gas-matter reaction into light-matter interaction[J]. PhotoniX, 2023, 4(1): 20
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