发明名称 |
Device and method for differential sensing of hydrogen gas using thermoabsorptance or thermoreflectance |
摘要 |
A hydrogen sensor, useful for trace hydrogen gas detection. The sensor involves providing a gas sample, generating modulated optical excitation sources, bringing the optical excitation source to the side of a metalized thin pyroelectric film, and detecting via a lock-in amplifier circuit the coherent differential signal resulting from thermoreflectance and thermoabsorptance changes in the film when exposed to hydrogen gas.
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申请公布号 |
US7116421(B2) |
申请公布日期 |
2006.10.03 |
申请号 |
US20030384598 |
申请日期 |
2003.03.11 |
申请人 |
GARCIA JOSE AGUSTIN;MANDELIS ANDREAS;WANG CHINHUA |
发明人 |
GARCIA JOSE AGUSTIN;MANDELIS ANDREAS;WANG CHINHUA |
分类号 |
G01N21/00;G01N21/17;G01N21/78;G01N33/00 |
主分类号 |
G01N21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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