Hydrogen ion (molecular ion and proton) sensor: fast & reversible optical/chromic hydrogen detection

Hydrogen ion (molecular ion and proton) sensor: fast & reversible optical/chromic hydrogen detection

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Available online

  (School of Materials and Chemical Technology / Dr. Saulius Juodkazis)

“Pulsed laser deposition of Pt-WO3 of Hydrogen sensors under atmospheric conditions”

Applied Surface Science （DOI:10.1016/j.apsusc.2020.147568）

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＜Abstract＞

Here we report on a hydrogen gas sensor comprised of Pt-WO3 nano-/micro- powder films, which were produced using nanosecond pulsed laser ablation and deposition on a silica glass substrate under atmospheric conditions. An all- optical non-contact method of probing its electromagnetic radiation transmittance in the near-IR 1.3 μm telecommunications frequency band was employed

for rapid ∼ 10 s timescale detection of low-concentration (below 4% by volume)

hydrogen gas admixtures. Discussion on optimizing the composition of the Pt- WO3 alloy and its processing conditions and temperatures for best performance is provided.