Wettability of a surface subjected to high frequency mechanical vibrations
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- 作者：R. Galleguillos-Silva ; renato.galleguillos@usach.cl ; Y. Vargas-Herná ; ndez ; L. Gaete-Garretó ; n
- 关键词：Wettability ; Ultrasounds ; Contact angle
- 刊名：Ultrasonics Sonochemistry
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：35
- 期：part_PA
- 页码：134-141
- 全文大小：1056 K
- 卷排序：35
文摘
Ultrasonic radiation can modify some physical properties in liquid/solid interactions, such as wettability. The dependence of solid surface wettability on its vibrational state was studied. Experiments with an interface formed by distilled water deposited on a titanium alloy and surrounded by air were carried out.It is shown that it is possible to control the apparent wettability of a given liquid/solid/gas system by applying sonic-ultrasonic vibrations of controlled amplitude at the interface.The system studied is composed of a drop of distilled water deposited on a flat titanium surface in air. The contact angle was used as an indicator of apparent wettability.It is shown that the apparent wettability of a surface is linearly dependent on the peak vibration velocity and independent of the vibration frequency. Higher vibration speed lowers the contact angle and therefore causes greater surface wettability.