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synchronous detection of multiple optical characteristics of atmospheric aerosol by coupled photoacoustic cavity

Chinese Physics B 2022年第6期31卷 278-284页

作者：靳华伟胡仁志谢品华罗平 Key Laboratory of Environmental Optics&Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China Institute of Environment Friendly Materials and Occupational Health Anhui University of Science and TechnologyWuhu 241000China State Key Laboratory of Coal Resources in Western China Xi’an University of Science and TechnologyXi’an 710054China Mechanical Engineering School Anhui University of Science and TechnologyHuainan 232001China

Owing to the influence of sampling loss,cavity difference and detecting source,the multi-optical parameter measurement of atmospheric aerosol cannot be detected simultaneously in the same reference *** order to solve this problem,a new method of simultaneously detecting the aerosol optical parameters by coupling cavity ring-down spectrometer with photoacoustic spectroscopy is ***,the coupled photoacoustic cavity is formed by the organic fusion of the photoacoustic cavity and the ring-down ***,the integrated design of the coupling spectroscopy system is carried ***,the extinction coefficient and absorption coefficient of aerosol are measured simultaneously by the system,and then the aerosol scattering coefficient and single albedo are calculated *** accuracy of the system is verified by comparing with the data from the environmental quality monitoring station,which provides a new idea for the detection of multi-optical characteristics of atmospheric aerosol.

关键词： spectroscopy synchronous detection coupling spectrum coupled photoacoustic cavity

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An Azo-PDMS-based wearable UV sensor with the optimized photo response mode for dual sensing and synchronous detection

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Science China(Technological Sciences) 2022年第1期65卷 179-190页

作者： QI YuHao ZHENG JunPing Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300350China

A wearable UV sensor is designed to realize UV detection and a warning effect on people’s excessive UV *** is noteworthy that the photoelectric system and supporting material of the most conventional sensor are *** unstable connection between the two components and the complicated construction method makes the sensor susceptible to external motion interference and prone to ***,we developed a unique photo response mode of the UV sensor based on a novel photo responsive *** azobenzene-containing polydimethylsiloxane(Azo-PDMS)film was prepared as the outer layer of the *** integrated the functions of photo response source,support and protection,which realized the direct contact and rapid response to the UV light *** nanotube(CNT),wrapped in the middle of Azo-PDMS films as an inner layer,transformed the photomechanical response signal into the photoelectric *** photo response mode endows the sensor with excellent anti-motion interference capabilities and a true sense of UV-strain synchronous monitoring performance,which is of great significance to the practical application of wearable *** addition,based on the excellent properties of Azo-PDMS,the sensor can also protect the human body from UV damage,self-repair after fracture,and realize personalized customization through 3 D *** makes a breakthrough in the design and construction of wearable UV sensors and paves a new way to optimize sensor photo response modes.

关键词： azobenzene polydimethylsiloxane wearable UV sensor synchronous detection

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Fiber Optic 3-D Space Piezoelectric Accelerometer and its Antinoise Technology

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Semiconductor Photonics and Technology 2001年第3期7卷 163-167页

作者： CAO Man ting (School of Electr. Eng., Yanshan University, Qinhuangdao 066004, CHN) 燕山大学电气工程学院河北秦皇岛 066004

The mechanical structure of piezoelectric accelerometer is designed, and the operation equations on X , Y , and Z axes are deduced. The test results of 3 D frequency response are given. Noise disturbances are effectiv... 详细信息

关键词： 3D piezoelectric accelerometer synchronous detection Fiber optic transmission

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