Highly sensitive and miniaturized microcone-curved resonant photoacoustic cavity for trace gas detection

Zhao, Zhongke1; Ni, Wenjun1; Yang, Chunyong1; Ran, Sixiang1; He, Bingze1; Wu, Ruiming1; Lu, Ping2,3; Shum, Perry Ping1,4

2024-12-01

10.1016/j.pacs.2024.100650

PHOTOACOUSTICS   影响因子和分区

2213-5979

This paper proposes a novel microcone-curved resonant photoacoustic cell (MCR-PAC) for highly sensitive trace gas detection. The MCR-PAC features with microcone-curved resonant region and cylindrical buffer chamber, which dominates the photoacoustic signal amplification. By introducing the hyperbolic eccentricity as a new optimization dimension, the quality factor of the MCR-PAC is remarkably strengthened to enhance the acoustic pressure amplitude. At an eccentricity value of 5, the volume of the photoacoustic resonant cavity is approximately 0.23 cm(3). Targeting trace acetylene, the system achieves a minimum detection limit of 1.41 ppb with an integration time of 290 s, corresponding normalized noise equivalent absorption coefficient is 1.88x10(-9) Wcm(-1)Hz(-1/2). Compared to the traditional T-type PAC, the overall performance of MCR-PAC has been enhanced nearly fourfold. With its compact millimeter-scale dimensions and high sensitivity, the MCR-PAC demonstrates extensive potential for application in environmental monitoring and breath diagnostics.

Microcone-curved resonant photoacoustic cell Photoacoustic spectroscopy Trace gas detection

SCI

英语

其他

National Natural Science Foundation of China["62105373","62171487"] ; Natural Science Foundation of Hubei Province["2023AFC012","2024AFA030"] ; Knowledge Innovation Program of Wuhan-Shuguang Project[2022010801020408]

Acoustics ; Engineering ; Instruments & Instrumentation ; Radiology, Nuclear Medicine & Medical Imaging

Acoustics ; Engineering, Biomedical ; Instruments & Instrumentation ; Radiology, Nuclear Medicine & Medical Imaging

WOS:001319788500001

ELSEVIER GMBH

Web of Science

1.South Cent Minzu Univ, Coll Elect & Informat Engn, Hubei Engn Res Ctr Intelligent IOT Technol, Hubei Key Lab Intelligent Wireless Commun, Wuhan 430074, Peoples R China
2.Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect WNLO, Wuhan 430074, Peoples R China
3.Huazhong Univ Sci & Technol, Natl Engn Res Ctr Next Generat Internet Access Sys, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
4.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Coll Engn, Shenzhen 518055, Peoples R China

Zhao, Zhongke,Ni, Wenjun,Yang, Chunyong,et al. Highly sensitive and miniaturized microcone-curved resonant photoacoustic cavity for trace gas detection[J]. PHOTOACOUSTICS,2024,40.

Zhao, Zhongke.,Ni, Wenjun.,Yang, Chunyong.,Ran, Sixiang.,He, Bingze.,...&Shum, Perry Ping.(2024).Highly sensitive and miniaturized microcone-curved resonant photoacoustic cavity for trace gas detection.PHOTOACOUSTICS,40.

Zhao, Zhongke,et al."Highly sensitive and miniaturized microcone-curved resonant photoacoustic cavity for trace gas detection".PHOTOACOUSTICS 40(2024).