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(a) Flow pattern in and out of a droplet in presence of thermal gradient, (b) flow pattern in a liquid film driven by surface temperature gradient. Reproduced with permission from [178], A.S. Basu and Y.B. Gianchandani, “Virtual microfluidic traps, filters, channels and pumps using Marangoni flows”, Journal of Micromechanics and Microengineering, vol. 18, p. 115031, 2008. Copyright 2008, IOP Publishing, all rights reserved.
