Patent ID: 11959859
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A Raman multi-gas detection system comprising:
a single laser;
an enhancement unit coupled to the laser wherein the enhancement unit includes a nanogrid having nanogaps, wherein the single laser is configured to generate plasmon-enhanced electric fields in at least some of the nanogaps of the nanogrid, wherein the system is configured to allow the gas to flow through the nanogaps of the nanogrid such that constituent molecules to be detected in the gas undergo enhanced Raman scattering as the constituent molecules enter the enhanced plasmon electric fields of the at least some of the nanogaps of the nanogrid;
a detector configured to detect the enhanced Raman scattering; and
an analyzer coupled to the detector wherein the analyzer identifies the constituent molecules in the gas from the enhanced Raman scattering and wherein the gas exiting the nanogrid is configured to be recycled by the system to flow through the nanogaps of nanogrid at least a second time.