%0 Journal Article
%A Juekuan Yang
%A Meng Shen
%A Yang Yang
%A William J Evans
%A Zhiyong Wei
%A Weiyu Chen
%A Alfred A Zinn
%A Yunfei Chen
%A Ravi S Prasher
%A Terry T Xu
%A Pawel Keblinski
%A Deyu Li
%B Phys. Rev. Lett.
%D 2014
%G eng
%I American Physical Society
%P 205901
%R 10.1103/PhysRevLett.112.205901
%T Phonon Transport through Point Contacts between Graphitic Nanomaterials
%V 112
%8 05/2014
%X <p><span>Measurements of thermal transport through contacts between individual multiwall carbon nanotubes show that, contrary to common expectation, the normalized contact thermal conductance per unit area depends linearly on the tube diameter. The result is corroborated with and extended to multilayer graphene nanoribbons through molecular dynamics simulations. Semiquantitative analyses show that these intriguing observations are consistent with an explanation based on an unexpectedly large phonon mean free path in the&nbsp;</span><span class="aps-inline-formula"><span id="MathJax-Element-1-Frame" class="mjx-chtml MathJax_CHTML"><span id="MJXc-Node-1" class="mjx-math"><span id="MJXc-Node-2" class="mjx-mrow"><span id="MJXc-Node-3" class="mjx-mrow"><span id="MJXc-Node-4" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I">c</span></span></span></span></span></span></span><span>-axis direction of graphite, phonon reflection at free surfaces, and phonon focusing in highly anisotropic graphitic materials.</span></p>