Method for detecting petroleum with a staggered toroidal chip
US11346778B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jan 2, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jan 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2823
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a method for detecting petroleum with a staggered toroidal chip, comprising the following steps: step 1, dry the test environment of a terahertz spectrum analysis system, measure a spectrum under dry conditions, and use the spectrum as a reference spectrum; step 2, use a pipette to transfer a crude oil sample and evenly smear it on the metasurface of a staggered toroidal chip; step 3, put the staggered toroidal chip coated with the crude oil sample into the dried terahertz spectrum analysis system, let a terahertz pulse signal of the terahertz spectrum analysis system to be vertically irradiated on the chip for detection, and then get a detection spectrum of the crude oil sample; step 4, subtract the reference spectrum from the detection spectrum, and then get a transmission spectrum of the crude oil sample, wherein the staggered toroidal chip is a terahertz chip designed based on the dual-torus toroidal effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.