Study of Functional Surface Structures on Metals
Abstract
The objective of this research is to develop the fundamental understanding of the processes responsible for surface restructuring of metals upon exposure to femtosecond laser irradiation. The proposed research will seek to develop the fundamental understanding of the processes responsible for the observed restructuring of metal surfaces under exposure to femtosccond laser irradiation, which can dramatically alter the functionalities of metal surfaces. For example, in recent experiments at the PI s lab the Pl has transformed highly reflective nietals into either totally absorptive or selectively reflective (reflective of only a specific wavelength region), leading to the creation of the so-called black and colored metals. The black and colored rnetals also possess significantly altered. radiative and welling properties. Surface structures that develop at the micro- and nano-scales are believed to play the major role in these changes in functionality. In this project, the Pl will seek to develop a predictable and optimal procedure for producing the functionalities assoqiatcd with black nndcolored metals. First, the Pl will establish a clear relationship between the altered surface optical properties and the laser-induced structures. Then they will model the dynamics of the surface restructuring, particularly the effects or electron-phonon coupling and hot electron diffusion. The knowledge gained here will provide us a direction in controlling and designing new functionalities on metals.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2017
- Source ID
- W911NF1510319
Entities
People
- Chunlei Guo
Organizations
- Army Contracting Command
- United States Army
- University of Rochester