Audioburst Search

Infrared Light Offers A Cooler Way to Defrost


This is scientific Americans. Sixty seconds signs. I'm Adam Levy torture molecules can arrange themselves to much larger structures take intricate snowflakes which form all by themselves in the right conditions. Well, now, researchers have created some delicate water structures of their own in the form of microscopic ice maze with a little help. From light the team took some sugar water and kept it a temperature where is crystals and water happily? Coexist, they then expose the H two infrared light of a frequency that is absorbed. Much more easily by the ice crystals than his by the water without it something interesting will happen when you illuminate is which absorbed more than water because they once once the ice is melting then it's become a liquid water, and then it's absorbed less. So you have kind of negative. Beck and situation. And we did not know what will happen with this physicist e Dobroslav ski from the Hebrew University in Jerusalem the heating caused by the light melted. Tiny holes in the crystals these holes sometimes joined up to form channels, and the research has watched as a labyrinth like pattern gradually formed over the course of an hour. And at some point we suddenly saw a whole spectrum of 'em patents that appear and there were holes that they're open and closed channels that was emptying altogether. We realized that we found the new phenomenon which was not observed before the research is published that findings in the journal science advances and cool is all this may sound that may also be some icy applications for this technique defrosting may make you think of microwave ovens but heating ice with microwaves has some drawbacks. The microwave actually warm the water, but not the ice. So here we have a system, which we. Warn, the is even more than the water, and because the shorter wavelength infrared light wombs the ice more than the water the technique could come in handy for Kathleen unfreezing delicate, biological samples that have been kept on ice, which would be a good thing to say and to have Thole, thanks for listening for scientific American sixty seconds science. I'm Adam Levy.

Coming up next