TY - JOUR
T1 - Analysis of three nonlinear effects in a continuum approach to heat transport in nanosystems
AU - Sellitto, A.
AU - Cimmelli, V. A.
AU - Jou, D.
PY - 2012/8/15
Y1 - 2012/8/15
N2 - Nonlinear effects may be especially relevant in heat transport at the nanoscale, because small temperature differences divided by minute lengths may yield very high temperature gradients. Here we discuss such effects using a generalized heat-transport equation, whose nonlinear terms are explored in three situations of potential practical interest, namely: length dependence of the thermal conductivity of carbon nanotubes, heat rectification in troncoconical nanowires, and anomalies in the temperature profile in radial heat transport in thin layers or graphene sheets. Their thermodynamic aspects are also discussed. © 2012 Elsevier B.V. All rights reserved.
AB - Nonlinear effects may be especially relevant in heat transport at the nanoscale, because small temperature differences divided by minute lengths may yield very high temperature gradients. Here we discuss such effects using a generalized heat-transport equation, whose nonlinear terms are explored in three situations of potential practical interest, namely: length dependence of the thermal conductivity of carbon nanotubes, heat rectification in troncoconical nanowires, and anomalies in the temperature profile in radial heat transport in thin layers or graphene sheets. Their thermodynamic aspects are also discussed. © 2012 Elsevier B.V. All rights reserved.
KW - Effective thermal conductivity
KW - Generalized heat-transport equation
KW - Heat rectification
KW - Nonlinear effects
KW - Temperature hump
UR - https://www.scopus.com/pages/publications/84862701696
U2 - 10.1016/j.physd.2012.04.008
DO - 10.1016/j.physd.2012.04.008
M3 - Article
SN - 0167-2789
VL - 241
SP - 1344
EP - 1350
JO - Physica D: Nonlinear Phenomena
JF - Physica D: Nonlinear Phenomena
ER -