Change in the Mode of Spontaneous Motion of an Alcohol Droplet Caused by a Temperature Change | Zendy

Ken Nagai | Zendy; Yutaka Sumino | Zendy; Hiroyuki Kitahata | Zendy; Kenichi Yoshikawa | Zendy

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Change in the Mode of Spontaneous Motion of an Alcohol Droplet Caused by a Temperature Change

Author(s) -

Ken Nagai,

Yutaka Sumino,

Hiroyuki Kitahata,

Kenichi Yoshikawa

Publication year - 2006

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.161.286

Subject(s) - marangoni effect , aqueous solution , alcohol , phase (matter) , chemistry , motion (physics) , phase change , thermodynamics , solubility , volume (thermodynamics) , materials science , chemical physics , surface tension , physics , classical mechanics , organic chemistry

An alcohol (pentanol) droplet exhibits spontaneous motion on an aqueous solution, driven by a solutal Marangoni effect. We found that the mode of such droplet motion changes depending on the temperature of the aqueous phase. When the temperature of the aqueous phase is 20 °C, a droplet with a volume of 1 μl exhibits vectorial motion, whereas when the temperature is 25 °C, the droplet exhibits irregular motion. We discuss the mode change in relation to the solubility of pentanol in water.

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