Analysis of response of THz spectroscopy to insect foreign bodies hidden in tea products

Xudong Sun; Junbin Liu

doi:10.1117/12.2575106

10 October 2020 Analysis of response of THz spectroscopy to insect foreign bodies hidden in tea products

Xudong Sun, Junbin Liu

Proceedings Volume 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII; 115590Z (2020) https://doi.org/10.1117/12.2575106
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Terahertz (THz) time-domain spectrometer is used to analyze the response of tea and insect foreign bodies to distinguish foreign bodies in tea. Collect the absorption coefficient and dielectric constant of green tea and foreign matter, and analyze the spectral characteristics of the foreign matter. Principal component analysis (PCA) was explored to find clustering patterns. It can be found that terahertz spectroscopy can effectively distinguish insect foreign bodies in tea. It provides a new method for detecting insect foreign bodies in tea.

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Citation Download Citation

Xudong Sun and Junbin Liu "Analysis of response of THz spectroscopy to insect foreign bodies hidden in tea products", Proc. SPIE 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII, 115590Z (10 October 2020); https://doi.org/10.1117/12.2575106

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