31 Aug '15, 8pm

Liquid Metal Changes Shape to Tune Antenna

Liquid Metal Changes Shape to Tune Antenna

Antennas can range from a few squiggles on a PCB to a gigantic Yagi on a tower. The basic laws of physics must be obeyed, though, and whatever form the antenna takes it all boils down to a conductor whose length resonates at a specific frequency. What works at one frequency is suboptimal at another, so an adjustable antenna would be a key component of a multi-band device. And a shape-shifting liquid metal antenna is just plain cool. The first thing that pops into our head when we think of liquid metal is a silvery blob of mercury skittering inside the glass vial salvaged out of an old thermostat. The second image is a stern talking-to by the local HazMat team, so it’s probably best that North Carolina State University researchers [Michael Dickey] and [Jacob Adams] opted for gallium alloys for their experiments. Liquid at room temperature, these alloys have the useful prope...

Full article: http://hackaday.com/2015/08/31/liquid-metal-changes-shape...

Tweets

Shape-shifting Liquid-Metal Antennas

spectrum.ieee.org 21 Aug '15, 10pm

Normally, when you want to adjust the resonant frequency of an antenna, you add electronic components like inductors to th...

Nanopillars can manipulate phase and shape of light beams, say @NASA and @Caltech.

Nanopillars can manipulate phase and shape of l...

newelectronics.co.uk 01 Sep '15, 3pm

The lenses are made of silicon nanopillars arranged into a honeycomb pattern. It is this 'metasurface' that allows light w...

ISRO unfurls its biggest antenna of GSAT-6A military satellite

ISRO unfurls its biggest antenna of GSAT-6A mil...

defencenews.in 31 Aug '15, 8am

CHENNAI: The Indian space agency on Sunday said it had successfully deployed the large antenna of military communication s...

Malaysia’s democracy is in worse shape than we ...

anwaribrahimblog.com 01 Sep '15, 3am

Malaysia’s pro-democracy rally shows a country deeply divided along ethnic lines. The human sea of yellow swarming though ...