Lee, Jinwoo Jongsu Lee Lee, Geon Kim, Dai­Sik Ryu, Yong­Sang Seo, Minah 2024-01-12T06:32:09Z 2024-01-12T06:32:09Z 2023-11-30 2024-01 0935-9648 https://pubs.kist.re.kr/handle/201004/79735 With the advancements of nanotechnology, innovative photonic designs coupled with functional materials provide a unique way to acquire, share, and respond effectively to information. It is found that the simple deposition of a 30 nm-thick palladium nanofilm on a terahertz (THz) metasurface chip with a 14 nm-wide effective nanogap of asymmetric materials and geometries allows the tracking of both interatomic and interfacial gas？matter interactions, including gas adsorption, hydrogenation (or dehydrogenation), metal phase changes, and unique water-forming reactions. Combinatorial analyses by simulation and experimental measurements demonstrate the distinct nanostructures, which leads to significant light-matter interactions and corresponding THz absorption in a real-time, highly repeatable, and reliable manner. The complex lattice dynamics and intrinsic properties of metals influenced by hydrogen gas exposure are also thoroughly examined using systematically controlled ternary gas mixture devices that mimic normal temperature and pressure. Furthermore, the novel degrees of freedom are utilized to analyze various physical phenomena, and thus, analytical methods that enable the tracking of unknown hidden stages of water-forming reactions resulting in water growth are introduced. A single exposure of the wave spectrum emphasizes the robustness of the proposed THz nanoscopic probe, bridging the gap between fundamental laboratory research and industry. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Advancements of Intense Terahertz Field Focusing on Metallic Nanoarchitectures for Monitoring Hidden Interatomic Gas-Matter Interactions Article 10.1002/adma.202308975 1 Advanced Materials, v.36, no.3 Advanced Materials 36 3 N scie scopus 001110222500001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article WATER-FORMING REACTION CO OXIDATION THIN-FILMS HYDROGEN PALLADIUM DEHYDROGENATION ENHANCEMENT DIFFRACTION ADSORPTION PLASMONICS gas-matter interaction metasurface nanogap nanoscopic probe THz