Wettability of a surface subjected to high frequency mechanical vibrations

Autor: R. Galleguillos-Silva, L. Gaete-Garretón, Y. Vargas-Hernández
Rok vydání: 2015
Předmět:
Zdroj: Ultrasonics sonochemistry. 35
ISSN: 1873-2828
Popis: 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.
Databáze: OpenAIRE