A liquid crystal optical sensor using laser speckle for dimethyl methylphosphonate detection

Yuxiang Yan; Zhifei Cao; Pengxia Li; Zhaomin Tong

doi:10.1117/12.2680914

29 November 2023 A liquid crystal optical sensor using laser speckle for dimethyl methylphosphonate detection

Yuxiang Yan, Zhifei Cao, Pengxia Li, Zhaomin Tong

Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 1277114 (2023) https://doi.org/10.1117/12.2680914
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

A new method is reported for determining the concentration of dimethyl methylphosphonate (DMMP) vapor based on the capture of laser speckles from a liquid crystal (LC) sensor. By calculating the change of the correlation coefficients of speckle images, DMMP vapor is selectively detected over a 200 ppb to 5 ppm concentration range, demonstrating the feasibility of the method for determining vapor phase concentrations of Organophosphorus compounds (OPs).

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yuxiang Yan, Zhifei Cao, Pengxia Li, and Zhaomin Tong "A liquid crystal optical sensor using laser speckle for dimethyl methylphosphonate detection", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 1277114 (29 November 2023); https://doi.org/10.1117/12.2680914

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