Multivariate-coupled-enhanced photoacoustic spectroscopy with Chebyshev rational fractional-order filtering algorithm for trace CH4 detection

Multivariate-coupled-enhanced photoacoustic spectroscopy with Chebyshev rational fractional-order filtering algorithm for trace CH4 detection

An innovative and miniature photoacoustic spectroscopy (PAS) gas sensor based on a multivariate-coupled amplification photoacoustic cell (MVCA-PAC) with a total length of 100 mm was developed to achieve ultra-sensitive trace CH4 detection. Acoustic pressure distribution simulations reveal that at th...

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Bibliographic Details
Main Authors: Shenlong Zha, Hang Chen, Chen Liu, Yuxiang Guo, Hongliang Ma, Qilei Zhang, Lingli Li, Shengbao Zhan, Gang Cheng, Yanan Cao, Pan Pan
Format: Article
Language:English
Published: Elsevier 2025-04-01
Series:Photoacoustics
Subjects:
Photoacoustic spectroscopy
Multivariate coupled amplification
Chebyshev rational fractional-order filtering
Detection limit
Measurement precision
Online Access:http://www.sciencedirect.com/science/article/pii/S2213597925000114
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