Nano- and Bio-Electronics: Designer Materials and Novel Responses using Artificially Engineered 2D Superlattices
Abstract
This proposal is to use engineered substratesÑconsisting of nanoparticle arrays or nanofabricated structuresÑlayered with 2D materials to create tunable electronic superlattices. The goal is to use these artificially engineered superlattices to design new materials and generate novel electronic responses. An electronic superlattice refers to a long-range periodic pattern that is superimposed on a material and which can coherently modulate the band structure. Compared to naturally existing crystals composed of periodic atomic lattices, superlattice systems offer a platform to design electronic properties by demand, and a venue for studying novel electronic effects such as electron-electron interaction, spin-orbit interactions, and topological transport. Two-dimensional materials, atomically thin by nature, are inherently susceptible to structural and electronic modulations by their neighboring layer of materials, and are thus suitable for versatile superlattice engineering. This project will take advantage of the thin and flexible nature of 2D materials, deposit them on periodically ordered nanoparticle monolayer assemblies or ordered protrusion structures, and achieve superlattices having spatially varying charge doping, strain, and/or proximity coupling effects. The new electronic behavior that emerges from different combinations of 2D material/engineered substrate superlattices will be determined from electrical transport measurements. As many of the material responses are still unknown, the measurements will be tightly integrated with theoretical support and nanoparticle synthesis. This project will advance fundamental knowledge of how to create, modulate, and understand emergent behavior in new superlattice materials. This topic is of interest to the ARO because the ability to design materials having specific properties and responses will allow for the creation of vastly different electronic and photonic devices that not only operate with improved performance characteristics but also improved energy efficiency.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 10, 2019
- Source ID
- W911NF1910346
Entities
People
- Nadya Mason
Organizations
- Army Contracting Command
- United States Army
- University of Illinois Urbana–Champaign