2317 油水界面で生じる面内爆発現象を利用した微小物体駆動法(OS8-4 アクチュエータシステム(4))

概要

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In the present study, a natural phenomenon generating at an oil-water interface is utilized as a source of power of a new actuator, which uses the action of a surfactant. That is to say, when the surfactant is put into the oil-water interface, surfactant molecules diffuse isotropically, which looks like an explosion appearing in-plane. It means that mechanical energy is generated at the interface. Then, a new method has been constructed for converting the isotropic phenomenon into an anisotropic phenomenon for using as the source of power of the actuator. In order to get out the anisotropic phenomenon, a wetting-controlled surface of a solid substrate is located close to the oil-water interface. As a result, when the distance from the oil-water interface to the substrate surface satisfies the range from -0.7mm to 0.7mm, a unidirectional force has been obtained by putting a solution of the surfactant into the oil-water interface. Moreover, a strong correlation has been found between the surface tension, i.e. the wetting property of the solid substrate, and the magnitude of generative force at the oil-water interface.
一般社団法人日本機械学会の論文
2006-05-28