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Photothermal formation of vortex flows by 1.55 μm light

Author(s): Rui Xu | Hongbao Xin | Baojun Li

Journal: AIP Advances
ISSN 2158-3226

Volume: 3;
Issue: 5;
Start page: 052120;
Date: 2013;
Original page

Fluid flows with four vortices were simultaneously formed on water surface based on photothermal effect induced by a laser beam of 1.55 μm wavelength. With the illumination of an optical power of 60 mW, the peak velocity of each vortex flow was reached to 1200 μm/s. Influence of optical power and attack angle on the vortex flows has been investigated. The mechanism of photothermal formation was analyzed with the assistance of a finite-element simulation.
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