Photonic Crystal Gas Sensor
AssigneeThe Board of Regents of the University of Oklahoma
InventorBinbin Weng
Life of this patent
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Abstract
A gas sensor comprising: a substrate; a grating array disposed on top of the substrate and comprising grates; and voids defined by the grates and configured to confine gas molecules for absorption of light and analysis. A method of gas sensing comprising: generating first light; converting the first light into second light using grates of a grating array; resonating the second light within the grating array; confining gas molecules in voids defined by the grates; and causing the gas molecules to absorb the second light within the voids.
Claims22
A gas sensor comprising:
- a substrate;
- a grating array disposed on top of the substrate and comprising grates;
- and
- voids defined by the grates and configured to confine gas molecules for absorption of light and analysis.
A gas sensor system comprising:
- a gas sensor comprising:
- grates configured to:
- absorb first light with a first wavelength, and
- convert the first light into second light with a second wavelength, wherein the second wavelength is higher than the first wavelength, and
- a signal detector configured to:
- accept third light remaining after gas molecules absorb a portion of the second light, and
- convert the third light into an electrical signal;
- and
- a computer coupled to the signal detector and configured to:
- receive the electrical signal, and
- analyze the electrical signal to determine whether the electrical signal exhibits a fingerprint of a gas.
A method of gas sensing comprising:
- generating first light;
- converting the first light into second light using grates of a grating array;
- resonating the second light within the grating array;
- confining gas molecules in voids defined by the grates;
- and
- causing the gas molecules to absorb the second light within the voids.
Dependencies are inferred from the claim text.