On the surface tension of water under high magnetic field: A contact angle method

Abstract

The properties of magnetized water have been widely studied, but whether the magnetic field will affect the surface tension of water has not been clearly understood. Herein, we studied contact angles and surface tension of water under a 12 T high magnetic field and found that both the advancing and receding contact angles of the solid–liquid system cannot be changed by horizontal and vertical magnetic fields. A decrease in static contact angle was observed under a magnetic field, indicating the origin from contact angle hysteresis. Though comparing magnetic energy and thermal energy, which are related to the surface tension of materials by van der Waals type intermolecular interaction, we concluded that magnetic field cannot change the surface tension of water, as well as strength of hydrogen bond of water.