Oscillatory Motion of a Camphor Object on a Surfactant Solution,The Journal of Physical Chemistry B

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Oscillatory Motion of a Camphor Object on a Surfactant Solution
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2021-01-28 , DOI: 10.1021/acs.jpcb.0c09314
Yu Xu ₁ , Nami Takayama ₁ , Hua Er ₂ , Satoshi Nakata ₁

Affiliation

The mode bifurcation between oscillatory motion and no motion of a camphor object floating on surfactant aqueous solution was investigated. The camphor and surfactant were used as the sources of driving and suppressing forces, respectively. A circular plastic sheet was attached to the center of the bottom of a camphor disk, which served as the self-propelled object; further, the contact area between the disk and the solution (S) was varied to control the amount of camphor molecules from the disk that dissolved in the solution. Motion features, that is, the maximum speed, frequency of oscillatory motion, and mode bifurcation, varied depending on S. We discussed the relationship between these motion features and the kinetics of camphor and surfactant molecules around the object. The results suggest that the nature of the oscillatory motion depends on the amount of camphor molecules accumulated at the base of the self-propelled object.

中文翻译：

表面活性剂溶液上樟脑目标的振荡运动

研究了漂浮在表面活性剂水溶液上的樟脑物体在振荡运动与不运动之间的模式分叉。樟脑和表面活性剂分别用作驱动力和抑制力的来源。圆形塑料板贴在樟脑盘底部的中央，作为自走物体。此外，改变圆盘和溶液（S）之间的接触面积以控制来自圆盘的溶解在溶液中的樟脑分子的量。运动特征，即最大速度，振荡运动的频率和模式分叉，取决于S。我们讨论了这些运动特征与物体周围樟脑和表面活性剂分子动力学之间的关系。结果表明，振荡运动的性质取决于在自走物体底部积累的樟脑分子数量。

更新日期：2021-02-18

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