dc.contributor.author |
Zhou, x |
|
dc.contributor.author |
Karanja, J. M |
|
dc.contributor.author |
Yang, M |
|
dc.contributor.author |
Ming, X. Z |
|
dc.contributor.author |
Liu, K |
|
dc.contributor.author |
Zhou, F |
|
dc.contributor.author |
Dai, Y |
|
dc.date.accessioned |
2022-05-30T10:15:54Z |
|
dc.date.available |
2022-05-30T10:15:54Z |
|
dc.date.issued |
2022-03 |
|
dc.identifier.uri |
http://repository.kyu.ac.ke/123456789/840 |
|
dc.description.abstract |
A novel laser machined spiral microstructure fiber Bragg grating (FBG) hydrogen sensor coated
with composite sensing film is presented. The sensor probes are sputtered with Pd/Ni and
Pd/Ag film respectively. The atomic ratio of the Pd/Ni and Pd/Ag composite films is controlled
at 87:13 and 4:1 respectively. Experimental results demonstrate that a pitch 60 μm FBG with
double spiral microstructures, coated with 520 nm Pd/Ni and Pd/Ag film has hydrogen gas
sensitivity in air of 13 pm/%H and 25 pm/%H respectively. The laser ablated spiral
microstructured probes with composite films showed greater sensitivity compared with
standard FBG probes with similar coating. The optimum testing temperature (50 °C) enhanced
the sensitivity and repeatability of the probes. Due to its high gas response and reversibility, the
sensor probe is a potential candidate for hydrogen monitoring. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
5th KyU International Conference |
en_US |
dc.subject |
Spiral Micro-Structured FBG Hydrogen Sensor, Pd87-Ni13/Pd4-Ag1. Thin Film Femtosecond Laser Ablation |
en_US |
dc.title |
Spiral Micro-Structured FBG Hydrogen Sensor based on Pd87-Ni13/Pd4-Ag1 Thin Film and Femtosecond Laser Ablation |
en_US |
dc.type |
Article |
en_US |