Thermal and Transport Effects in Metal Blackening and Colorization

CBET-0828370 Guo最近，我们创造了一种飞秒激光加工技术，将高反射金属完全吸收或仅反射特定颜色的光，创造出所谓的“黑色金属”和“有色金属”。黑色和有色金属有许多重要的应用，如制造更好的传感器、探测器、太阳能收集器、激光标记和改进的隐身技术。然而，这些过程仍然效率低下，物理机制仍不清楚。该项目的目标是更好地了解金属发黑和着色的热和传输效应，以便进一步改进工艺。这项拟议的研究利用先进的飞秒激光技术来研究金属中的热效应和输运效应。在这个项目中接受培训的学生将发展更好的跨学科研究技能。由于技术应用的多样性，黑色和彩色金属制品受到了媒体的广泛关注。这项建议中概述的研究项目不仅将继续帮助培养研究生和本科生，还将使学生和我本人有机会进一步接触更广泛的社区，与公众分享我们对科学和工程的热情。该项目由化学、生物工程、环境和运输系统(CBET)部门的热运输过程(TTP)计划、材料加工和制造(MPM)计划、土木、机械和制造创新(CMMI)部门联合资助，并由工程局(ENG)提供资金支持部门间研究。

CBET-0828370GuoRecently, we created a femtosecond laser processing technique to transform highly reflective metals either totally absorptive or reflecting only a certain color of light, creating the so-called "black metal" and "color metal". The black and color metals have many important applications such as making better sensors, detectors, solar energy collectors, laser marking, and improved stealth technology. However, the processes are still inefficient and the physical mechanisms remain unclear. The goal of this project is to develop improved understanding of the thermal and transport effects of metal blackening and colorization so that the processes can be further refined. This proposed research employs advanced femtosecond laser techniques for studying thermal and transport effects in metals. The students trained in this project will develop better interdisciplinary research skills. Because of the variety of technological applications, the black and color metal work have gained extensive media attention. The research project outlined in this proposal will not only continuously help train graduate and undergraduate students, but also give students and myself opportunities to further reach out to a broader community and share our passions in science and engineering with the general public. This project is jointly funded by the Thermal Transport Processes (TTP) Program, of the Chemical, Bioengineering, Environmental, and Transport Systems (CBET) Division, by the Materials Processing & Manufacturing (MPM) Program, of the Civil, Mechanical, and Manufacturing Innovation (CMMI) Division, and by funding provided from the Directorate for Engineering (ENG) to support Inter Divisional Research.