All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry
Light absorption induced thermoelastic and photoacoustic excitation, combined with laser Doppler vibrometry, was utilized to analyze the dynamic mechanical behavior of a microcantilever. The measured frequency response, modal shapes, and acoustic coupling effects were interpreted in the framework of...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Photoacoustics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597921000598 |
| _version_ | 1819172917565456384 |
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| author | Yang Liu Tommaso Seresini Jun-Yan Liu Liwang Liu Fei Wang Yang Wang Christ Glorieux |
| author_facet | Yang Liu Tommaso Seresini Jun-Yan Liu Liwang Liu Fei Wang Yang Wang Christ Glorieux |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | Light absorption induced thermoelastic and photoacoustic excitation, combined with laser Doppler vibrometry, was utilized to analyze the dynamic mechanical behavior of a microcantilever. The measured frequency response, modal shapes, and acoustic coupling effects were interpreted in the framework of a simple Bernouilli-Euler model and quantitative 3D finite element method (FEM) analysis. Three opto-mechanical generation mechanisms, each initiated by modulated optical absorption and heating, were identified both by an analytical and finite element model. In decreasing order of importance, optically induced cantilever bending is found to be caused by: (i) differences in photoacoustically induced pressure oscillations in the air adjacent to the illuminated and dark side of the cantilever, resulting from heat transfer from the illuminated cantilever to the nearby air, acting as a volume velocity piston, and (ii) thermoelastic stresses accompanying temperature and thermal expansion gradients in the cantilever, (iii) photoacoustically induced pressure oscillations in the air adjacent to the illuminated cantilever holder and frame. |
| first_indexed | 2024-12-22T20:14:48Z |
| format | Article |
| id | doaj.art-1b519885b1d243f4b6ec7ab40071ffe5 |
| institution | Directory Open Access Journal |
| issn | 2213-5979 |
| language | English |
| last_indexed | 2024-12-22T20:14:48Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj.art-1b519885b1d243f4b6ec7ab40071ffe52022-12-21T18:13:59ZengElsevierPhotoacoustics2213-59792021-12-0124100299All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometryYang Liu0Tommaso Seresini1Jun-Yan Liu2Liwang Liu3Fei Wang4Yang Wang5Christ Glorieux6Laboratory for Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Leuven, B-3001, Belgium; State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China; School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaLaboratory for Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Leuven, B-3001, BelgiumState Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China; School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China; Corresponding author at: School of Mechatronics Engineering, Harbin Institute of Technology, Nangang District, Xidazhi Street 92, 150001, Harbin, Heilongjiang Province, China.Laboratory for Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Leuven, B-3001, BelgiumState Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China; School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaState Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China; School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaLaboratory for Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Leuven, B-3001, Belgium; Corresponding author at: Laboratory for Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001, Leuven, Belgium.Light absorption induced thermoelastic and photoacoustic excitation, combined with laser Doppler vibrometry, was utilized to analyze the dynamic mechanical behavior of a microcantilever. The measured frequency response, modal shapes, and acoustic coupling effects were interpreted in the framework of a simple Bernouilli-Euler model and quantitative 3D finite element method (FEM) analysis. Three opto-mechanical generation mechanisms, each initiated by modulated optical absorption and heating, were identified both by an analytical and finite element model. In decreasing order of importance, optically induced cantilever bending is found to be caused by: (i) differences in photoacoustically induced pressure oscillations in the air adjacent to the illuminated and dark side of the cantilever, resulting from heat transfer from the illuminated cantilever to the nearby air, acting as a volume velocity piston, and (ii) thermoelastic stresses accompanying temperature and thermal expansion gradients in the cantilever, (iii) photoacoustically induced pressure oscillations in the air adjacent to the illuminated cantilever holder and frame.http://www.sciencedirect.com/science/article/pii/S2213597921000598CantileverPhotoacousticPhotothermalModal analysisMode shape |
| spellingShingle | Yang Liu Tommaso Seresini Jun-Yan Liu Liwang Liu Fei Wang Yang Wang Christ Glorieux All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry Photoacoustics Cantilever Photoacoustic Photothermal Modal analysis Mode shape |
| title | All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry |
| title_full | All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry |
| title_fullStr | All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry |
| title_full_unstemmed | All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry |
| title_short | All-optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser Doppler vibrometry |
| title_sort | all optical dynamic analysis of the photothermal and photoacoustic response of a microcantilever by laser doppler vibrometry |
| topic | Cantilever Photoacoustic Photothermal Modal analysis Mode shape |
| url | http://www.sciencedirect.com/science/article/pii/S2213597921000598 |
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