Thermocrystals is a new type of artificial periodic structure that controls the transfer of heat. In this paper, a multiple lattice constants supercrystal structure is proposed, and a known narrow thermal spectral material is used to achieve a broad coverage between bandgap frequencies and thermal phonon frequencies. Simulation results show that the super-thermocrystals can reduce the thermal conductivity of the material by as much as 60%. Besides, we designed the thermocrystal waveguide with a linear defect two-dimensional structure to control the heat flow. The simulation results show that most of the heat flow is confined to the linear defect waveguide.

中文翻译：

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线缺陷多晶格超热晶波导传输特性

热晶体是一种控制热量传递的新型人工周期结构。在本文中，提出了一种多晶格常数超晶结构，并使用已知的窄热谱材料来实现带隙频率和热声子频率之间的广泛覆盖。模拟结果表明，超热晶体可以将材料的热导率降低多达 60%。此外，我们设计了具有线缺陷二维结构的热晶波导来控制热流。仿真结果表明，大部分热流被限制在线性缺陷波导中。