Journal
ADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume 247, Issue -, Pages 52-80Publisher
ELSEVIER
DOI: 10.1016/j.cis.2017.07.025
Keywords
Drops; Bubbles; Thermo-capillarity; Soluto-capillarity; Marangoni effect; Laser
Categories
Funding
- EU under Marie Curie ITN CoWet [607861]
- MINECO [FIS-2014-62005-EXP, CTQ-2016-78895-R]
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A survey is provided of a variety of problems where a passive or an active drop experiences directed motion consequence of the action of an external or internal agent or a combination of both. An active drop is capable of reacting by engendering autonomous, self-propelled motion in favor or against the agent. The phenomena involved offer diverse complexity but one way or another the drop motion finally rests on thermo- or soluto-capillarity hence on interfacial tension gradients. Accordingly, here a minimal mathematical framework underlying such drop motions is provided when direct external temperature or solute gradients, illumination, internal heat generation or surface chemical reaction are incorporated into the physico-chemical-hydro-dynamics.
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