Download Slide () - Journal of Heat Transfer

Date of download: 6/10/2017
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From: Atomic-Scale Three-Dimensional Phononic Crystals With a Very Low Thermal Conductivity to Design
Crystalline Thermoelectric Devices
J. Heat Transfer. 2009;131(4):043206-043206-10. doi:10.1115/1.3072927
Figure Legend:
Diagrams in (a) of the ratios λmax/λbulk (black circles), ⟨l⟩max/⟨l⟩bulk (black upward triangles) and ⟨Cv⟩/⟨Cv⟩bulk (black downward
triangles) versus temperature T for the atomic-scale 3D phononic crystals with the largest nanoparticle size (M=3). Data of the same
group are interpolated by a black dashed line. The thin top dashed horizontal line is a reference to the intersection point of the
curves ⟨l⟩max/⟨l⟩bulk and ⟨Cv⟩/⟨Cv⟩bulk at T=300 K, where these ratios have the value of 1/13=0.077. In (b), the ratios λmax/λbulk
(black circles), ⟨l⟩max/⟨l⟩bulk (black upward triangles) and ⟨Cv⟩/⟨Cv⟩bulk (black downward triangles) are plotted at T=300 K versus
the Ge relative concentration x, where x varies from 0 for bulk Si to 0.344 for the atomic-scale 3D phononic crystal with the largest
nanoparticle size (M=3). In (b), the curves ⟨l⟩max/⟨l⟩bulk and ⟨Cv⟩/⟨Cv⟩bulk intersect when x=0.344, as also seen in (a).