Heat is something which makes us the sense of hotness or coolness of an object, heat is not as simple as it seems, but could you emagine that heat will be used for transmitting or receiving signals in the future electronic devices, at present we use electric signal for this purpose.
In a study published in Nature Communications, a team of EPFL researchers has shed new light on the mechanisms of thermal conductivity in graphene and other two-dimensional materials. They have demonstrated that heat propagates in the form of a wave, just like sound in air. This was up to now a very obscure phenomenon observed in few cases at temperatures close to the absolute zero. Traditionally heat can transfer via three modes conduction, convection and radiation. Radiation is the way by which heat transfer like waves but is solids the method governing heat transfer is conduction, but it is a great achievement that the phenomenon of heat through waves in graphine was achieved.
Generally in 3-d materials the heat transfers through the vibration called of atoms know as "phonons" that transfer energy to each other by the process of conduction and in this process it is not possible to transmit heat to long distance without losses. But the 2-d graphine can transmitt the heat in a reversible manner with the help of heart waves that suffer very less loss with the help the phenomenon of wave-like diffusion, called "second sound". In that case, all phonons march together in unison over very long distances. "Our simulations, based on first-principles physics, have shown that atomically thin sheets of materials behave, even at room temperature, in the same way as three-dimensional materials at extremely low temperatures" said the author of the study. He also says that not only graphine shows waves propagation property but various other elements are there which can show the similar results, which are yet to be tested.
This research will help the scientists and engineers which are keen to have a boom in the electronics technology replacing the Silicon.
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