Femtosecond laser direct writing of 3D metallic structures and 2D graphite

• Main Author: Kang, Seungyeon
• Other Authors: Mazur, Eric
• Language: en_US
• Published: Harvard University 2014
• Subjects: Nanotechnology; Engineering; Optics; 3D; Direct laser writing; Graphene oxide; Nanofabrication; Nanostructures; Ultrafast laser
• Online Access: http://dissertations.umi.com/gsas.harvard:11495; http://nrs.harvard.edu/urn-3:HUL.InstRepos:12274586

This thesis explores a novel methodology to fabricate three dimensional (3D) metal-dielectric structures, and two dimensional (2D) graphite layers for emerging metamaterials and graphene applications. The investigations we report here go beyond the limitations of conventional fabrication techniques that require multiple post-processing steps and/or are restricted to fabrication in two dimensions. Our method combines photoreduction mechanism with an ultrafast laser direct writing process in innovative ways. This study aims to open the doors to new ways of manufacturing nanoelectronic and nanophotonic devices. With an introductory analysis on how the various laser and chemical components affect the fabrication mechanism, this dissertation is divided into three sections. === Engineering and Applied Sciences