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Random Multiple Scattering Enhanced Photoacoustic Gas Spectroscopy with Disordered Porous Ceramics.
Bao, Haihong; Zhang, Congzhe; Miao, Yinping; Jin, Wei.
Affiliation
  • Bao H; Department of Electrical Engineering , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong , China.
  • Zhang C; Photonic Sensors Research Center , The Hong Kong Polytechnic University Shenzhen Research Institute , Shenzhen 518057 , China.
  • Miao Y; Department of Electrical Engineering , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong , China.
  • Jin W; Photonic Sensors Research Center , The Hong Kong Polytechnic University Shenzhen Research Institute , Shenzhen 518057 , China.
ACS Appl Mater Interfaces ; 10(31): 26372-26377, 2018 Aug 08.
Article in En | MEDLINE | ID: mdl-30011177
Light-gas interaction can be enhanced by using disordered porous materials because multiple random scattering increases light intensity near the surface of the material. Here we report signal enhancement of photoacoustic gas spectroscopy with disordered porous ceramics. The amplitude and frequency characteristics of photoacoustic signal due to gas absorption in disordered materials are modeled theoretically. Experiment with a porous Al2O3 sample demonstrates photoacoustic signal enhancement of ∼4 times at 5 kHz.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Clinical_trials / Prognostic_studies Language: En Journal: ACS Appl Mater Interfaces Journal subject: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Year: 2018 Document type: Article Affiliation country: China Country of publication: United States
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Clinical_trials / Prognostic_studies Language: En Journal: ACS Appl Mater Interfaces Journal subject: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Year: 2018 Document type: Article Affiliation country: China Country of publication: United States