Optical hydrogen sensor capable of wide range, high sensitivity and high speed detection by resonant grating

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04638
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nano/Microsystems
• Research Institution: Osaka Prefecture University
• Principal Investigator: Mizutani Akio 大阪府立大学, 工学(系)研究科(研究院), 講師 (50400700)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 水素センサ / 共鳴波長測定 / 位相差測定 / グースヘンシェンシフト / 共鳴格子 / プラズモン

Outline of Final Research Achievements

In this research, we have studied to develop a resonant grating type optical sensor on palladium surface which can detect hydrogen concentration in a wide range, high sensitivity and high speed, in order to ensure safety for future hydrogen energy society. In order to detect it at high speed, resonance wavelength shift using a spectrometer was measured, and a measurement time of 0.1 s was demonstrated. The highest sensitivity was obtained when the hydrogen concentration was from 1% to 4%, which was higher than the previously reported sensor. The hydrogen concentration resolution was 0.13%. In addition, as a phase difference measurement method for high sensitivity and high speed detection, a method using radially polarized light and a camera, and a method of measuring positional shift between P- and S-polarized beams called Goos-Hanchen shift were studied. Although it was not possible to measure hydrogen, it showed the possibility of high sensitivity and high accuracy.

Free Research Field

計測工学