Liquid metal have range twice bigger than systems using electronic switches
This may prove a game changer in the days to come. Researchers have come out with a liquid metal that they claim is capable to be tuned to listen to various frequencies with change of electrical voltage.
Researchers claim that the liquid metalâ€™s functioning in very simple indeed. They claim that when the positive voltage is applied to the liquid metal it will expand while it will contract in case negative voltage is applied to the same metal.
According to researchers when the liquid metal is placed inside capillary and small negative voltages are applied it causes the metal to withdraw from the capillary and if positive voltage is applied it causes the metal to expand and flow into the capillary. Such elongation and shortening of liquid metal filament changes the antennaâ€™s operating frequencies.
There is no denying the fact that liquid electronics technology has attracted lots of attention in the past as researchers have been very sure about its usefulness. But till now they were bogged down by multiple drawbacks to fully develop the technology.
While talking about the development Jacob Adams an assistant professor in the Department of Electrical and Computer Engineering at NCSU says, â€œUsing a liquid metal, such as eutectic gallium and indium that can change its shape, allows us to modify antenna properties more dramatically than is possible with a fixed conductor.â€ The antennaâ€™s properties can be reconfigured to some extent by using solid conductors with electronic switches.
Adams while further detailing the findings says, â€œOur antenna prototype using liquid metal can tune over a range of at least two times greater than systems using electronic switchesâ€¦Mobile device sizes are continuing to shrink and the burgeoning Internet of Things will likely create an enormous demand for small wireless systems. As the number of services that a device must be capable of supporting grows, so too will the number of frequency bands over which the antenna and RF front-end must operate. This combination will create a real antenna design challenge for mobile systems because antenna size and operating bandwidth tend to be conflicting trade-offs.â€