Su Chuanjin, Wu Huan, Dai Lingyun, Zhang Zhihan, Li Suixuan, Hu Yongjie
School of Engineering and Applied Science, University of California, Los Angeles, Los Angeles, California 90095.
ASME J Heat Mass Transf. 2025 Mar;147(3). doi: 10.1115/1.4066973. Epub 2024 Dec 16.
Heat transfer in solids has traditionally been described by Fourier's law, which assumes local equilibrium and a diffusive transport regime. However, advancements in nanotechnology and the development of novel materials have revealed non-classical heat transfer phenomena that extend beyond this traditional framework. These phenomena, which can be broadly categorized into those governed by kinetic theory and those extending beyond it, include ballistic transport, phonon hydrodynamics, coherent phonon transport, Anderson localization, and glass-like heat transfer. Recent theoretical and experimental studies have focused on characterizing these non-classical behaviors using methods such as the Boltzmann transport equation, molecular dynamics, and advanced spectroscopy techniques. In particular, the dual nature of phonons, exhibiting both particle-like and wave-like characteristics, is fundamental to understanding these phenomena. This review summarizes state-of-the-art findings in the field, highlighting the importance of integrating both particle and wave models to fully capture the complexities of heat transfer in modern materials. The emergence of new research areas, such as chiral and topological phonons, further underscores the potential for advancing phonon engineering. These developments open up exciting opportunities for designing materials with tailored thermal properties and new device mechanisms, potentially leading to applications in thermal management, energy technologies, and quantum science.
固体中的热传递传统上由傅里叶定律描述，该定律假定局部平衡和扩散传输机制。然而，纳米技术的进步和新型材料的发展揭示了超出这一传统框架的非经典热传递现象。这些现象大致可分为受动力学理论支配的现象和超出该理论的现象，包括弹道输运、声子流体动力学、相干声子输运、安德森局域化和类玻璃热传递。最近的理论和实验研究集中于使用玻尔兹曼输运方程、分子动力学和先进光谱技术等方法来表征这些非经典行为。特别是，声子的双重性质，既表现出粒子状又表现出波状特征，对于理解这些现象至关重要。本综述总结了该领域的最新研究成果，强调了整合粒子和波模型以充分捕捉现代材料中热传递复杂性的重要性。手性和拓扑声子等新研究领域的出现，进一步凸显了推进声子工程的潜力。这些进展为设计具有定制热性能的材料和新的器件机制带来了令人兴奋的机会，有可能在热管理、能源技术和量子科学中得到应用。
