Size and edge roughness dependence of thermal conductivity for vacancy-defective graphene ribbons

Physical Chemistry Chemical Physics : PCCP
Guofeng Xie, Yulu Shen

Abstract

By incorporating the phonon-phonon scattering, phonon-boundary scattering and phonon-vacancy scattering into the linearized Boltzmann transport equation, we theoretically investigate the effects of size and edge roughness on thermal conductivity of single vacancy-defective graphene ribbons. Due to the severe suppression of high-frequency phonons by phonon-vacancy scattering which includes the impacts of missing mass and linkages, as well as the variation of the force constant of bonds associated with vacancies, the low-frequency ballistic phonons have a higher contribution to the thermal conductivity, which results in the stronger length, weaker width and weaker edge roughness dependence on thermal conductivity of vacancy-defective graphene ribbons than that of pristine ones. Our findings are helpful to understand and manipulate thermal conductivity of graphene by phononic engineering.

References

Aug 9, 2003·Physical Review Letters·P O LehtinenR M Nieminen
Aug 9, 2003·Physical Review Letters·Baowen Li, Jiao Wang
Aug 20, 2004·Nature·Ayako HashimotoSumio Iijima
Oct 23, 2004·Science·K S NovoselovA A Firsov
Feb 21, 2006·Physical Review Letters·Vitor M PereiraA H Castro Neto
Feb 17, 2007·Science·K S NovoselovA K Geim
Feb 21, 2008·Nano Letters·Alexander A BalandinChun Ning Lau
Nov 8, 2008·Nature Nanotechnology·Mhairi H GassA K Geim
Mar 28, 2009·Science·Caglar O GiritA Zettl
Jun 23, 2009·Science·A K Geim
Apr 10, 2010·Science·Jae Hun SeolLi Shi
Apr 21, 2010·Nano Letters·Enrique MuñozBoris I Yakobson
May 21, 2010·Nano Letters·Yuanyue Liu, Boris I Yakobson
Dec 15, 2010·Nano Letters·Ziqian WangJohn T L Thong
Jul 23, 2011·Nature Materials·Alexander A Balandin
Jan 11, 2012·Nature Materials·Shanshan ChenRodney S Ruoff
May 9, 2012·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Denis L Nika, Alexander A Balandin
May 23, 2012·Nano Letters·Denis L NikaAlexander A Balandin
Oct 3, 2014·Nanoscale·Hongyang LiShanshan Chen

❮ Previous
Next ❯

Citations

May 6, 2015·The Journal of Organic Chemistry·Kamil Skonieczny, Daniel T Gryko
Dec 5, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Xue-Kun Chen, Ke-Qiu Chen
Nov 13, 2020·Physical Chemistry Chemical Physics : PCCP·Jinjie Gu, Xilong Qu
Sep 14, 2021·Physical Chemistry Chemical Physics : PCCP·Chenhan LiuYunfei Chen

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2022 Meta ULC. All rights reserved