Dimension Dependence of Negative Differential Thermal Resistance in Graphene Nanoribbons
نویسندگان
چکیده
منابع مشابه
Negative Differential Thermal Conductance in Graphene Nanoribbons: Toward Graphene Thermal Circuits
Graphene has received much attention due to its remarkable electronic properties. It also has exceptional thermal properties, such as an unusually high thermal conductivity. Understanding thermal transport of graphene is of great importance to the applications for future graphene‐based devices in energy efficient nanoelectronics. We have calculated the thermal current of symmetric...
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This work provides a comprehensive investigation on the spectral phonon properties in graphene nanoribbons (GNRs) by the normal mode decomposition (NMD) method, considering the effects of edge chirality, width, and temperature. We find that the edge chirality has no significant effect on the phonon relaxation time but has a large influence to the phonon group velocity. As a result, the thermal ...
متن کاملScaling analysis of negative differential thermal resistance.
Negative differential thermal resistance (NDTR) can be generated for any one-dimensional heat flow with a temperature-dependent thermal conductivity. In a system-independent scaling analysis, the general condition for the occurrence of NDTR is found to be an inequality with three scaling exponents: n(1)n(2) < -(1+n(3)), where n(1) ∈ (-∞,+∞) describes a particular way of varying the temperature ...
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K. G. S. H. Gunawardana,1,* Kieran Mullen,1 Jiuning Hu,2 Yong P. Chen,2,3 and Xiulin Ruan4 1Homer L. Dodge Department of Physics and Astronomy, Center for Semiconductor Physics in Nanostructures, The University of Oklahoma, Norman, Oklahoma 73069, USA 2Birk Nanotechnology Center and School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA 3Birk Nanote...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry C
سال: 2012
ISSN: 1932-7447,1932-7455
DOI: 10.1021/jp303431k