TY - JOUR
T1 - Self-propulsion of liquid marbles
T2 - Leidenfrost-like levitation driven by marangoni flow
AU - Bormashenko, Edward
AU - Bormashenko, Yelena
AU - Grynyov, Roman
AU - Aharoni, Hadas
AU - Whyman, Gene
AU - Binks, Bernard P.
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/5/7
Y1 - 2015/5/7
N2 - Self-propulsion of liquid marbles filled with aqueous alcohol solutions and placed on a water surface is reported. The characteristic velocity of the marbles is ca. 0.1 m/s. The phenomenon of self-propulsion is related to the Marangoni solutocapillary flow caused by the condensation of alcohol, evaporated from the liquid marble, on a water surface. The Marangoni flow in turn enhances the evaporation of alcohol from the marbles. Addition of alcohol to the water supporting the marbles suppresses the self-propulsion. The propulsion of liquid marbles is mainly stopped by water drag. The velocity of the center of mass of the marbles increases with an increase in the concentration of alcohol within the marble. The self-propulsion velocity of marbles is independent of their volume. Self-propulsion was not observed when marbles were placed on a glycerol surface.
AB - Self-propulsion of liquid marbles filled with aqueous alcohol solutions and placed on a water surface is reported. The characteristic velocity of the marbles is ca. 0.1 m/s. The phenomenon of self-propulsion is related to the Marangoni solutocapillary flow caused by the condensation of alcohol, evaporated from the liquid marble, on a water surface. The Marangoni flow in turn enhances the evaporation of alcohol from the marbles. Addition of alcohol to the water supporting the marbles suppresses the self-propulsion. The propulsion of liquid marbles is mainly stopped by water drag. The velocity of the center of mass of the marbles increases with an increase in the concentration of alcohol within the marble. The self-propulsion velocity of marbles is independent of their volume. Self-propulsion was not observed when marbles were placed on a glycerol surface.
UR - http://www.scopus.com/inward/record.url?scp=84929012355&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b01307
DO - 10.1021/acs.jpcc.5b01307
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AN - SCOPUS:84929012355
SN - 1932-7447
VL - 119
SP - 9910
EP - 9915
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 18
ER -