DNA-enabled hierarchical assembly of graphene electronics
Abstract
Title: DNA-enabled hierarchical assembly of graphene electronicsObjective: To carry out basic research towards building of a toolkit for developing precise graphene nanoribbon (GNR) heterojunctions with device functions from custom sequenced molecular building blocks, and their multiscale hierarchical self-assembly into electroniccircuits. Realization of controlled self-assembly of GNRs up to macroscopic scales could pave the way toward (i) novel carbon-based materials with widely tunable characteristics, and (ii) the self-guided fabrication of post-Moore~s law circuit architectures ~ initially in 2D but ultimately in 3D ~ based on chemicalinteractions between multi-functionalized GNR components. Approach: The MURI team will synthesize GNRs and GNR heterojunctions with unprecedented complexity by utilizing new approaches involvingDNA nanotechnology. Team will demonstrate new synthetic approaches for chemically functionalized GNRs that could be hierarchically assembled into complex structures in solution and on surfaces by inter-GNR H-bonding and with specially designed DNA strands that will be used as guiding templates. They will specifically target GNRs with novel electronic properties, such as heterojunctions with tunable topological states, and will use advances in precise nanoribbon positioning to demonstrate new single- and multi-GNR electronic devices.SOW:The three main thrusts of the MURI research are:1. Design and electrical characterization of hybrid DNA-GNR structures1.1. Precise assembly of GNRs through 2D DNA origami templating1.2. Novel cross-junction GNR devices (Dynamically Tunable Tunnel Junctions, GNR Single Electron Transistor (SET), GNR Spin Valves, GNR Mechanical Switches)1.3. Imaging and spectroscopy1.4. GNR device fabrication and transport measurements2. DNA-guided programmable GNR synthesis2.1. Programmable synthesis of GNRs with precise precursor s2.2. Deposition onto the surface and characterization2.3. Novel GNRs enabled by combining DNA templating and topology3. Hierarchical on-surface synthesis of H-bonded GNRs (II) DNA-guided programmable GNR synthesis(III) Hierarchical on-surface synthesis of H-bonded GNRs
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 20, 2019
- Source ID
- N000141912596
Entities
People
- Alexander Sinitskii
Organizations
- Office of Naval Research
- United States Navy
- University of Nebraska system