AI Article Synopsis
- The study examines how thermal conductivity changes in monolayer graphene nanoribbons (GNRs) when subjected to different levels of tensile strain using a molecular dynamics method.
- It was observed that stretching the GNRs leads to increased vibrational energy and thermal conductivity fluctuations, while significant decay (20%-30%) in thermal conductivity occurs at 9%-15% tensile strain.
- This reduction in thermal conductivity is attributed to structural ridges in the GNR that scatter low-frequency phonons moving perpendicular to the stretching direction, as supported by an analysis of the phonon density of states.
Article Abstract
The thermal conductivity of monolayer graphene nanoribbons (GNRs) with different tensile strain is investigated by using a nonequilibrium molecular dynamics method. Significant increasing amplitude of the molecular thermal vibration, molecular potential energy vibration and thermal conductivity vibration of stretching GNRs were detected. Some 20%~30% thermal conductivity decay is found in 9%~15% tensile strain of GNR cases. It is explained by the fact that GNR structural ridges scatter some low-frequency phonons which pass in the direction perpendicular to the direction of GNR stretching which was indicated by a phonon density of state investigation.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3758654 | PMC |
| http://dx.doi.org/10.3390/s130709388 | DOI Listing |
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