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20 August 2020 Generation of thermo-optical instability mediated by thermophoresis in a sessile water droplet
Muruga Lokesh, Rahul Vaippully, Anvitha Reddy, Basudev Roy
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Proceedings Volume 11463, Optical Trapping and Optical Micromanipulation XVII; 1146329 (2020) https://doi.org/10.1117/12.2563618
Event: SPIE Nanoscience + Engineering, 2020, Online Only
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Abstract
We show a new instability in sessile water droplets when a particle is trapped close to the edge interface of air and water by optical tweezers when the light beam heats up the glass substrate and generate thermophoretic forces that direct the particle outward from the tweezers trap. There is competition between the optical trapping and the thermophoretic forces which direct the particle away from the trap to generate this instability.
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Muruga Lokesh, Rahul Vaippully, Anvitha Reddy, and Basudev Roy "Generation of thermo-optical instability mediated by thermophoresis in a sessile water droplet", Proc. SPIE 11463, Optical Trapping and Optical Micromanipulation XVII, 1146329 (20 August 2020); https://doi.org/10.1117/12.2563618
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KEYWORDS
Interfaces
Diffusion
Optical tweezers
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