Low Dimensional Carbon Materials for Nanooptics and Nanoplasmonics
Abstract
This final report describes the development and application of the new synthesis, fabrication, characterization techniques our group has developed for studying fundamental optical and optoelectronic properties in two-dimensional (2D) materials, including graphene, hexagonal boron nitride (h-BN) and molybdenum disulfide, as funded by the AFOSR grant (FA9550-10-1-0410). We have investigated the fundamental properties such as electron cooling and the effect of grain boundary in single layer graphene (SLG). We demonstrated the patterned regrowth technique to build spatially-precise 2D circuit out of graphene and hBN. We discovered and studied previously-unseen structures such as the strain soliton in bilayer graphene using dark- field transmission electron microscopy (DF-TEM). Being able to identify 2D multilayer materials with complicated stacking structures enables us to study their unique optical properties, such as excitonic effects in the interlayer excitation in tBLG. Finally, the technique we have developed can be directly applied to study other 2D materials such as molybdenum disulfide and 2D glasses. Novel properties in these materials open up new avenues for studying old and new physics including glass phase transition and valley Hall effect.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 11, 2015
- Accession Number
- AD1001837
Entities
People
- Jiwoong Park
Organizations
- Cornell University