An Electrically Controlled Heat Rectifier using Graphene Nanoribbons
Paper in proceedings, 2019

Using Molecular Dynamics (MD) simulations we propose that splitting a graphene nanoribbon into two unequal strained sections using external force leads to large asymmetry in the forward and reverse heat fluxes. We find that the corresponding rectification ratio (RR) is enhanced to 60% compared to previous proposals. More importantly, the polarity of the proposed heat diode is controllable on-the-fly i.e. by changing the position where force is applied. This technique obviates the complex nano-patterning and lithography required to pattern graphene every time a new rectification value or sign is sought for and opens a route to simpler fabrication of phononic devices in 2D materials.

Graphene, Heat rectifier, Molecular Dynamics, Phononic devices

Author

Daryoush Shiri

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology

Andreas Isacsson

Chalmers, Physics, Materials Physics

2019 IEEE 14th Nanotechnology Materials and Devices Conference, NMDC 2019

2378-377X (ISSN)

Vol. October 2019 1-4 9084019

2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC)
Stockholm, ,

Graphene Core Project 3 (Graphene Flagship)

European Commission (Horizon 2020), 2020-04-01 -- 2023-03-31.

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Materials Science

Subject Categories

Energy Engineering

Textile, Rubber and Polymeric Materials

Other Physics Topics

Roots

Basic sciences

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Driving Forces

Innovation and entrepreneurship

DOI

10.1109/NMDC47361.2019.9084019

More information

Latest update

8/28/2020