激光诱导界面微结构对热辐射特性的影响及其调控机理研究

项目名称： 激光诱导界面微结构对热辐射特性的影响及其调控机理研究

项目编号： No.11274184

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 杨建军

作者单位： 南开大学

项目金额： 86万元

中文摘要： 材料微纳结构的奇特热传递和辐射性能和丰富复杂的物理内涵，以及其在高温热控、红外探测、固体照明等应用方面的巨大潜力，使得这类材料成为近年来物理学和材料学领域内的研究热点之一。本项目将在前期探索研究的基础上，提出利用飞秒激光在材料界面诱导微纳结构实现高效热辐射，并对其光谱强度和空间相干性进行有效调控的研究方案，具体通过飞秒激光脉冲整形技术，获得材料界面多尺度和多级微纳结构的可控构建，发展微纳尺度下热物理行为的高分辨表征方法，分析测量界面微结构热能传递在时空域内的演化特征，阐明材料热辐射特性随界面微结构参数变化的一般规律，建立理论描述框架并进行模拟计算，揭示材料界面微尺度下热波传输效应、近场等离激元产生和耦合效应与外在高效热辐射表现之间相互关联的内在机理，探索应用界面微纳结构对热能时空分布性质进行人工调控的新思路，这对推动我国在光电器件和航天领域内热控研究的发展和技术进步有重要意义。

中文关键词： 飞秒激光；表面微结构；热辐射；；

英文摘要： Micro/nano-structured materials have been one of the research highlights in the field of physics and material over recent years, because they not only have extraordinary thermal emission properties and rich complex physical mechanisms, but also can provide many potential applications in the high temperature control, the space infrared detection and the solid state illumination. On the basis of our former relevant studies, this project will propose a plane to comprehensively investigate thermal emissivity of the materials, and effective manipulation of the spectrum intensity and the spatial coherence. The detailed contents are included as follows: First, we will use the pulse shaping of femtosecond lasers to produce different types of multi-scaled microstructures on the sample interfaces in a reliable way. And then we will develop a new high resolution method to diagnose the tempospatial characteristics of thermal emission from the interface microstructured samples, and try to elucidate the dependence of thermal emission on the structural parameters. After that, we will build a new theoretical model to numerically calculate the thermal emission of the interface microstructured materials and explore the underlying mechanisms. Finally, a new approach to effectively govern the thermal emission of the material will b

英文关键词： femtosecond laser；surface microstructures；thermal emission；；