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Depth-Dependent Optical Stiffness Toward Water-Air Interface
Description
<jats:p>This research attempted to quantify the optical stiffness of trapped polystyrene bead toward water-air interface. The optical tweezers with 975 nm wavelength was used to optically trap a single 3 micron diameter of bead in a water-contained cell with air exposed top water surface. The optical stiffness was justified on effective radius (r*) of the bead lateral spatial distribution. The scattered light signals due to the trapped bead at different laser focus height from the bottom glass-water interface (less than 20 µm) and laser trapping powers (1.7 mW to 7.5 mW) were analyzed to investigate the r* profile. It was found that within our experimental condition, r* was independent of focus height at fixed power and exponentially decay with respect to laser power at fixed focus height.</jats:p>
Journal
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- International Journal of Engineering & Technology
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International Journal of Engineering & Technology 7 (4.30), 80-84, 2018-11-30
Science Publishing Corporation
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Details 詳細情報について
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- CRID
- 1360298764622946688
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- ISSN
- 2227524X
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- Data Source
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- Crossref