Noncontact rotation, levitation, and acceleration of flowing liquid metal wires
Publication Name
Proceedings of the National Academy of Sciences of the United States of America
Abstract
This paper reports the noncontact manipulation of free-falling cylindrical streams of liquid metals into unique shapes, such as levitated loops and squares. Such cylindrical streams form in aqueous media by electrochemically lowering the interfacial tension. The electrochemical reactions require an electrical current that flows through the streams, making them susceptible to the Lorentz force. Consequently, varying the position and shape of a magnetic field relative to the stream controls these forces. Moreover, the movement of the metal stream relative to the magnetic field induces significant forces arising from Lenz's law that cause the manipulated streams to levitate in unique shapes. The ability to control streams of liquid metals in a noncontact manner will enable strategies for shaping electronically conductive fluids for advanced manufacturing and dynamic electronic structures.
Open Access Status
This publication may be available as open access
Volume
119
Issue
6
Article Number
e2117535119
Funding Number
CBET-1510772
Funding Sponsor
National Science Foundation