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Encapsulation of a water drop inside an oil plug in a microtube under thermocapillary effect observed by Jiao et al. Reproduced with permission from [132], Z. Jiao, N.-T. Nguyen, and X. Huang, “Thermocapillary actuation of a water droplet encapsulated in an oil plug”, Journal of Micromechanics and Microengineering, vol. 17, p. 1843, 2007. Copyright 2007, IOP Publishing, all rights reserved.
