In-situ Monitored Molecular Beam Epitaxy of Encapsulated 2D Materials
Abstract
PUBLICALLY RELEASABLEProposal AbstractTitle: In-situ Monitored Molecular Beam Epitaxy of Encapsulated 2D MaterialsPI: Joseph Check,elskyResearch Area: PhysicsAgency Program Manager: Dr. Ian AppelbaumThe overarching objective of this proposal is to build an inte,grated materials synthesis/analysis platform for encapsulated 2D materials by augmenting a custom existing molecular beam epitaxy (M,BE) system. Such a system would enable the fabrication of materials in the effective 2D limit by combining epitaxial growth and cont,rolled intercalation with in-situ monitoring of the crystallographic evolution throughout the synthesis process. The motivation for,this research is manifold: (1) compared with conventional thin film growth and exfoliation methods, encapsulated epitaxy has demonst,rated exceptional capability in stabilizing atomically thin crystals with a broad range of compositions; (2) by altering the local c,hemical bonding environment, encapsulated epitaxy has the potential to stabilize novel crystal structures that do not exist in isola,ted 2D flakes; (3) in-situ characterization tools, e.g. low energy electron diffraction (LEED), can reveal the detailed crystallogra,phic transitions during growth and provide guidance for controlling the growth process with atomic-scale precision; (4) epitaxy can,stabilize materials not possible with bulk synthesis methods. Together, encapsulated epitaxy using MBE combined with integrated ana,lytical equipment offers a fresh approach for the scalable synthesis of novel 2D materials. Such materials platforms may serve as th,e foundation for the next generation of nanoelectronics, including promising candidates for room temperature operation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 01, 2022
- Source ID
- N000142212303
Entities
People
- Joseph Checkelsky
Organizations
- Massachusetts Institute of Technology
- Office of Naval Research
- United States Navy