Experimental and Theoretical Investigation of Laser-Nanoparticle Interactions

纳米粒子是纳米科学和纳米工程中最重要的纳米材料之一。这些纳米粒子在工程系统中的创新应用，如纳米球增强光刻正在出现。然而，人们对这一过程的物理机制知之甚少，特别是涉及极小长度和时间尺度的光学和热输运问题。该项目将通过实验技术和理论模拟相结合，对激光-纳米球相互作用过程进行全面研究，包括超快激光与固体基底上的纳米球相互作用，纳米球与基底之间的传导和辐射传热，以及纳米尺度光学相互作用和传热导致的表面纳米结构。从这项研究中，一个实用的nanolithography工具将开发出大规模并行nanomanufacturingsofvarietymaterial.Results从这个项目将作出重大影响的跨学科领域的纳米热传输，nanooptics和nanomanufacturing。此外，这项工作的结果将为本科生，研究生和K-12学生和教师提供令人兴奋的教学材料和有趣的实验室项目。该奖项由化学和运输系统部门的热运输和热处理计划以及设计，制造和工业创新部门的纳米制造计划共同资助。

Nanoparticles are among the most important nanomaterials in nanoscience and nanoengineering. Innovative applications of these nanoparticles in an engineering system such as nanosphere-enhanced photolithography are emerging. However, little is known about the physics of the process, especially the optical and thermal transport issues involving extremely small length and time scales. This project will offer comprehensive investigations on the laser-nanosphere interaction process by a combination of experimental techniques and theoretical simulation, including ultrafast laser interaction with the nanospheres resting on a solid substrate, conduction and radiative heat transfer between the nanopsheres and the substrate, as well as surface nanostructuring as a result of the nanoscale optical interaction and heat transfer. From this research, a practical nanolithography tool will be developed for massively parallel nanomanufacturing of a variety of materials.Results from this project will make a significant impact on the interdisciplinary field of nanoscale thermal transport, nanooptics, and nanomanufacturing. Moreover, the results of this work will provide exciting teaching materials and interesting lab projects for undergraduates, graduate students, and K-12 students and teachers. The award has been funded jointly by the Thermal Transport and Thermal Processing Program of the Chemical and Transport Systems Division and by the Nanomanufacturing Program of the Division of Design, Manufacturing and Industrial Innovation.