Development of microfabricated radiation source using a highly conductive graphene-based electron beam
Abstract
In this proposal, we propose to use the new material, reduced graphene oxide (free standing graphene film) prepared by two different novel synthesis methods: 1) metal-doped hydrothermal and 2) gel. Modified synthesis process with a metal nanoparticle doping improves the higher thermo-electrical conductivity and mechanical stability. The hydrothermal method utilizing the ~180°C heat treating process, while the gel method is the room temperature sonication process. The results of synthesized and tested rGO and W-rGO films are summarized ta the Fig. 1. The annealed free-standing rGO (Gel) film shows extremely lowest thickness (~106.73 nm) and highest electrical conductivity (~1350000 S/m) compared to the other existing free-standing graphene films. The hydrothermally prepared W-rGO film also shows similar electrical properties at lower (1200 °C) but more studies required for the higher temperature where more reduction of graphene oxide film occurs. More improvements can be achieved by understanding the film formation process and systematic study of this films which are challenging works and required lot of efforts.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 11, 2020
- Source ID
- N000142012053
Entities
People
- Gun-Sik Park
Organizations
- Office of Naval Research
- Seoul National University
- United States Navy