@article{oai:jaxa.repo.nii.ac.jp:00022457, author = {細木, 藍 and 西山, 道子 and 井川, 寛隆 and 関, 篤志 and 崔, 龍雲 and 渡辺, 一弘 and Hosoki, Ai and Nishiyama, Michiko and Igawa, Hirotaka and Seki, Atsushi and Choi, Yongwoon and Watanabe, Kazuhiro}, journal = {Sensors and Actuators B: Chemical}, month = {Aug}, note = {A novel fiber optic surface plasmon resonance (SPR) hydrogen sensor has been developed based on hetero-core structured fiber optics with multi-layer films of gold (Au), tantalum pentaoxide (Ta2O5) and palladium (Pd) uniformly coated onto a cylindrical cladding surface. We experimentally observed that the SPR resonant wavelength is shifted 28 nm with 4%-hydrogen concentration in nitrogen. In a light intensity-based experiment with an LED operating at 850 nm, it has been presented that a transmitted loss change of 0.23 dB was induced with a response time of 15 s for 4% hydrogen in the case of 25-nm Au, 60-nm Ta2O5 and 3-nm Pd multi-layer film. The proposed sensor has successfully detected hydrogen concentrations with a high sensitivity despite the usage of very thin Pd films., 資料番号: PA1420004000}, pages = {53--58}, title = {A surface plasmon resonance hydrogen sensor using Au/Ta2O5/Pd multi-layers on hetero-core optical fiber structures}, volume = {185}, year = {2013} }