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Research Article

Temperature-Dependent Mechanical Properties of Graphene/Cu Nanocomposites with In-Plane Negative Poisson’s Ratios

Table 7

Temperature-dependent NPRs and TECs of graphene-reinforced copper composites (11 and 22 directions are, respectively, referred to as zig-zag and armchair directions, and the 33 direction is referred to as the thickness direction).

Temperature (K) (×10-6 K-1) (×10-6 K-1)

3005%-0.06490.62970.65121.42241.4194
7%-0.05940.56310.60341.08121.0813
9%-0.04860.51110.50880.99761.0021
11%-0.03640.42350.45980.82040.8204
13%-0.03800.40260.43480.79840.8014

5005%-0.07210.62980.66171.50371.5006
7%-0.07180.57260.63581.38481.3957
9%-0.05400.54940.55841.31741.3046
11%-0.05320.53450.50191.21991.2053
13%-0.04890.50250.49511.02321.0288

7005%-0.07510.68260.67421.62221.6278
7%-0.07360.64520.62941.43241.4286
9%-0.05250.58280.57631.35891.3489
11%-0.05810.56430.50111.20691.2066
13%-0.02710.55760.43171.13671.1422

10005%-0.11180.69780.70631.70221.7331
7%-0.09940.65720.64531.72051.6899
9%-0.08750.60330.57911.52421.5416
11%-0.06760.57500.58541.30281.3016
13%-0.04150.56330.59551.32561.3083