Discovery Projects - Grant ID: DP210101436

热门话题：声子热滤光片的量子设计。热管理对可持续能源、电子产品、防护设备和节能建筑的许多技术至关重要。声子是代表行进振动的量子粒子，负责固体中的热量传输。该项目将研究嵌入纳米颗粒的固体中声子传输的新机制，纳米颗粒作为声子过滤器运行。中子谱提供了一种测量声子态密度的工具，而声子态密度是建立热边界电阻数学模型的关键。这有望确定超低导热系数的机理，从而在热电发电机和耐热材料中获得潜在的应用。

Hot Topic: Quantum Design of Phononic Heat Filters. Heat management is critical to many technologies for sustainable energy, electronics, protective equipment and energy-efficient buildings. The phonon is the quantum particle representing a travelling vibration and is responsible for the transmission of heat in solids. This project will study the new mechanisms for phonon transport in solids modified with embedded nanoparticles, which operate as phononic filters. Neutron spectroscopy provides a tool to measure the phonon density of states which is critical for developing a mathematical model of thermal boundary resistance. This is expected to identify mechanisms for ultra-low thermal conductivity leading to potential applications in thermoelectric generators and heat-resistant materials.