Ferrofluidic Actuation of Liquid for Radio-Frequency Applications

Case ID: 18/0014

Description

Researchers at the University of Hawaii describe liquid-metal based reconfigurable radio-frequency (RF) circuits having improved performance characteristics. The improvements are made possible through a new method for actuating liquid metal utilizing a hydrocarbon-based ferrofluid as an alternative to aqueous acidic or basic solutions. The ferrofluid, contained within a channel, physically deforms in response to an applied magnetic field. The ferrofluid forms a "wall" within the channel which prevents the oxidized liquid-metal skin from sticking to the surface of the surrounding fluidic channel. As the magnetic field moves relative to the channel, the ferrofluidic wall moves within the channel as well, physically displacing the liquid-metal along with it.

 

Applications

 

The invention can be used for actuation of liquid-metal in reconfigurable RF circuits.

 

Advantages

 

Replacing aqueous solutions with hydrocarbon-based ferrofluids can substantially reduce RF losses.

Patent Information:
Inventors
Anthony Combs
Aaron Ohta
Wayne Shiroma

For information, contact:
Avery Munoz
Licensing Associate
University of Hawaii
avery2@hawaii.edu
Keywords


Categories
Devices
Engineering
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