An Electrically Controlled Heat Rectifier using Graphene Nanoribbons
Paper i proceeding, 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

Författare

Daryoush Shiri

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantteknologi

Andreas Isacsson

Chalmers, Fysik, Materialfysik

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)

Europeiska kommissionen (Horisont 2020), 2020-04-01 -- 2023-03-31.

Styrkeområden

Nanovetenskap och nanoteknik (SO 2010-2017, EI 2018-)

Materialvetenskap

Ämneskategorier

Energiteknik

Textil-, gummi- och polymermaterial

Annan fysik

Fundament

Grundläggande vetenskaper

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Drivkrafter

Innovation och entreprenörskap

DOI

10.1109/NMDC47361.2019.9084019

Mer information

Senast uppdaterat

2020-08-28