Phase Transition in 2D Metal Carbides Heterostructures
Abstract
In this three-year project, the contractor will further pursue the research to use MXene as an "integrated, active, and self-recoverable" protector to prevent damage in ICs. Two new material structures based on MXene will be studied : (1) carbon nanotubes (CNTs) growing on the surface of MXenes (CNTs/MXs) in which CNTs act as antennas to enhance the signal coupling and expand the frequency range and (2) 2D transition metal dichalcogenide/metal carbide (TMDCs/MXs) heterostructures in which optoelectrically active metal chalcogenides (for example MoS2) grow epitaxially on metal carbides, forming a novel heterojunction between two phase transition materials (MoS2 can switch between semiconducting 2H and metallic 1T phase). This will be the world#s first study of chalcogenide/carbide phase transition heterostructures with many unforeseen results and potential technical applications. Its impact will be even larger than the #magic angle# between layers of graphene because the compositions of both the top chalcogenide and the bottom carbide can be adjusted freely, yielding endless combinations and possibilities. It can potentially lead to a fast phase transition response and even wider frequency coverage range (expanding from radio frequency to optical), protecting devices from conventional electromagnetic attack and visible/infrared laser based attack. More importantly, it will enable utilizing mature lithium-ion battery technology to study phase transition and equip the existing battery industry for future manufacture of phase transition CDEW devices.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2023
- Source ID
- N000142312569
Entities
People
- Yue Wu
Organizations
- Iowa State University
- Office of Naval Research
- United States Navy