By applying nanostructures to silicon, a typical semiconductor material, Professor Masahiro Nomura and his colleagues have realized for the first time anisotropic properties that allow heat to escape easily depending on temperature. Focusing on the Seigaiha, one of the patterns of Japanese traditional clothing, they realized for the first time that the directivity of quasiparticle phonons that carry heat can be switched depending on temperature, which is expected to lead to the development of thermal management for advanced semiconductors that generate a lot of heat. The paper was published in the electronic edition of ACS Nano on April 4.
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