TY - JOUR
T1 - Superposition of Translational and Rotational Motions under Self-Propulsion of Liquid Marbles Filled with Aqueous Solutions of Camphor
AU - Bormashenko, Edward
AU - Frenkel, Mark
AU - Bormashenko, Yelena
AU - Chaniel, Gilad
AU - Valtsifer, Viktor
AU - Binks, Bernard P.
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/11/21
Y1 - 2017/11/21
N2 - Self-locomotion of liquid marbles, coated with lycopodium or fumed fluorosilica powder, filled with a saturated aqueous solution of camphor and placed on a water/vapor interface is reported. Self-propelled marbles demonstrated a complicated motion, representing a superposition of translational and rotational motions. Oscillations of the velocity of the center of mass and the angular velocity of marbles, occurring in the antiphase, were registered and explained qualitatively. Self-propulsion occurs because of the Marangoni solutocapillary flow inspired by the adsorption of camphor (evaporated from the liquid marble) by the water surface. Scaling laws describing translational and rotational motions are proposed and checked. The rotational motion of marbles arises from the asymmetry of the field of the Marangoni stresses because of the adsorption of camphor evaporated from marbles.
AB - Self-locomotion of liquid marbles, coated with lycopodium or fumed fluorosilica powder, filled with a saturated aqueous solution of camphor and placed on a water/vapor interface is reported. Self-propelled marbles demonstrated a complicated motion, representing a superposition of translational and rotational motions. Oscillations of the velocity of the center of mass and the angular velocity of marbles, occurring in the antiphase, were registered and explained qualitatively. Self-propulsion occurs because of the Marangoni solutocapillary flow inspired by the adsorption of camphor (evaporated from the liquid marble) by the water surface. Scaling laws describing translational and rotational motions are proposed and checked. The rotational motion of marbles arises from the asymmetry of the field of the Marangoni stresses because of the adsorption of camphor evaporated from marbles.
UR - http://www.scopus.com/inward/record.url?scp=85034843120&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.7b03356
DO - 10.1021/acs.langmuir.7b03356
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C2 - 29083187
AN - SCOPUS:85034843120
SN - 0743-7463
VL - 33
SP - 13234
EP - 13241
JO - Langmuir
JF - Langmuir
IS - 46
ER -