Abstract The development of a compact, efficient, reliable thermal diode is crucial to improve advanced thermal management efficiency and controllability, and to enable brand new applications such as thermal logic gates and computers. In this study, we examine a nanoscale and efficient capillary-controlled thermal diode mechanism in Ar-filled Pt-based heterogeneous nanoporous structures, using Grand Canonical Monte Carlo (GCMC) simulation combined with Non-Equilibrium Molecular Dynamics (NEMD) simulation at the temperature range of 70–150 K and the pressure of 1.66 atm. Results show that the large thermal conductivity contrast between the controlled adsorption and capillary states using the structural heterogeneity (nanopillars on only one surface) and/or material heterogeneity (two different materials for nanogap surfaces) allows for the maximum thermal rectification ratio, Rmax ∼ 140 with minimal hysteresis under the cyclic operating temperatures −40 K

中文翻译：

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在异质纳米孔中使用受控毛细管的热二极管

摘要 开发紧凑、高效、可靠的热二极管对于提高先进的热管理效率和可控性以及实现热逻辑门和计算机等全新应用至关重要。在这项研究中，我们使用 Grand Canonical Monte Carlo (GCMC) 模拟结合非平衡分子动力学 (NEMD) 模拟在温度下研究了填充 Ar 的 Pt 基异质纳米多孔结构中的纳米级和高效毛细管控制的热二极管机制范围为 70-150 K，压力为 1.66 atm。