Figure 1.

The thickness-dependent elastic modulus of PS thin films at T = 295 K. The symbols circle and square are the experiment results for molar weight Mw = 1800 and 114 kg/mol, respectively [12]. The solid curve is plotted with the calculation results obtained from Equation 3, where the parameters that determine the Tg(h) in Equation 4 are c = 1/2, h0 = 5 nm, ΔCpb = 30.7 J mol-1 K-1 = 1.919 J g atom-1 K-1, and Tgb = 375 K [4].

Ao and Li Nanoscale Research Letters 2011 6:243   doi:10.1186/1556-276X-6-243
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