Near-field radiative heat transfer in N-body systems

N 体系统中的近场辐射传热

• 批准号: RGPIN-2017-05445
• 负责人: benabdallah, philippe
• 金额: $ 0.85万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633583
• 关键词: Near; field; radiative; heat; transfer

Until the 2000s only near-field heat exchanges between two objects had been theoretically and experimentally investigated and the mechanisms for energy transport in systems composed of a collection of different objects in mutual interaction was still unexplored and even out of range of the fluctuational electrodynamic theory introduced by Polder and van Hove in the beginning of 70s describing two-body heat exchanges. In 2011, we have introduced the first theoretical framework to deal with near-field heat exchanges in many-body systems in the approximation of small objects. This result consists in a generalization of the coupled dipole theory initially introduced in optics for fluctuating dipoles. In particular, a Meir-Wingreen-Landauer-type formula for the radiative heat transport in interacting N-body systems has been derived. A generalization of this theory to macroscopic objects has revealed the existence of purely many-body effects such as thermal photon tunneling enhancement which allows us to extend the near-field effects to larger separation distances using a passive relay system intercalated between two bodies in near-field interaction. All these pioneer works have opened the way to study the physics of heat exchanges in more or less complex plasmonic networks in regimes where near-field interactions are dominating the energy transport. But, to date this physics remains largely unexplored.

直到21世纪初，只有两个物体之间的近场热交换才被理论和实验研究，并且由相互作用的不同物体组成的系统中的能量传输机制仍然没有被探索，甚至超出了Polder和货车霍韦在70年代初引入的描述两体热交换的波动电动力学理论的范围。2011年，我们引入了第一个理论框架来处理小物体近似中多体系统的近场热交换。这一结果包括在一个概括的耦合偶极子理论最初介绍了在光学波动偶极子。特别地，导出了相互作用N体系统中辐射热输运的Meir-Wingreen-Landauer型公式。将这一理论推广到宏观物体，揭示了纯粹多体效应的存在，如热光子隧穿增强，这使我们能够将近场效应扩展到更大的分离距离，使用插入近场相互作用中的两个物体之间的被动中继系统。所有这些先驱工作开辟了研究或多或少复杂的等离子体网络中的热交换物理学的道路，在这些区域中，近场相互作用主导着能量传输。但是，到目前为止，这种物理学在很大程度上仍未被探索。