Measured heat capacities of SWNT bundles from this work and Refs. 10, 12, and 14.
Temperature dependence of the heat capacity of SWNT bundles closed at their ends (our data) plotted as C/T vs. T.
Temperature dependence of the heat capacity of SWNT bundles (our data) plotted as log C(T) vs. log T.
Calculated phonon densities of states of graphene (dash-dot line),36 graphite (dashed line)37 and an ensemble of isolated (10, 10) SWNTs (solid curve).11,36
Comparison of experimental (our results) and calculated heat capacities of graphite, graphene and an ensemble of isolated (5, 5) and (10, 10) SWNTs.
Comparison of the experimental curves C(T) (dashed line) and αR(T) (circles)25 of bundles of SWNTs oriented perpendicular to the sample axis. The straight line is an extrapolation of the high-temperature behavior of C(T) to the region below 36 K.
Temperature dependence of the Grüneisen coefficient γ(T) of bundles of SWNTs oriented perpendicular to the sample axis.
Measurement techniques, measurement temperatures, powder preparation methods, characteristics of SWNTs and SWNT bundles, sample masses and compositions.
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