Terahertz spectroscopy system with specialized measurement unit for non-destructive sample detection
AssigneeAnor Technologies Pte. Ltd.
InventorsNan Zhang, Haiwen Gu
Life of this patent
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Abstract
The present application discloses a measurement unit for holding a sample (including a powder sample in small quantity, a scattered powder sample or an aqueous solution sample) for a terahertz beam irradiation; and a terahertz spectroscopy system with the measurement unit for measuring an absorption signal from the sample. In particular, the terahertz beam can be reflected for multiple times through the sample in the measurement unit for enhancing the absorption signal. The present application discloses three non-destructive methods of measuring the absorption signal of the sample using the terahertz spectroscopy system.
Claims14
A measurement unit for holding a sample in a terahertz spectroscopy system comprising:
- a cover plate;
- and
- a bottom plate for enhancing an absorption signal of the sample to the terahertz beam;
- wherein the sample is configured to be sandwiched between the cover plate and the bottom plate for absorbing the terahertz beam;
- wherein the cover plate has a first flat surface towards the terahertz beam and a first serrated surface opposed to the first flat surface for enhancing reflection of the terahertz beam;
- wherein the bottom plate has a multilayer structure for enhancing sensitivity of the absorption signal to the terahertz beam, comprising:
- a substrate layer having a second serrated surface to the terahertz beam and a second flat surface opposed to the second serrated surface;
- an intermediate layer formed on the second serrated surface of the substrate layer for reflecting the terahertz beam;
- and
- a top layer formed on the intermediate layer for enhancing reflection of the terahertz beam;
- and,
- wherein the cover plate, and the substrate layer and the top layer of the bottom plate comprise high-density polyethylene (HDPE), low-density polyethylene (LDPE), polytetrafluoroethylene, poly-4-methylpentene-1 or polypropylene.
Dependencies are inferred from the claim text.