Schematic view of model free-standing polymer thin film. The arrow on top indicates the oscillatory shearing direction. Each sphere represents the monomer segment.
DMPs of the bulk at (a) , (b) , (c) vs temperature. In each figure, , , and are shown in 엯, ◻, and ▵, respectively.
DMPs of the bulk at different frequencies vs temperature; (a) vs , (b) vs , (c) vs . In each figure, 엯, ◻, and ▵ represent the data obtained at , 0.06, and 0.03, respectively.
Local DMPs of thicker films at as a function of the coordinate: in bold solid line, in bold dashed line, and in thin solid line. The scale on the left axis is for and , and that on the right axis is for . From the top to the bottom figure, temperature is increased constantly by 0.1 in reduced units. The insets at and 0.6 show local DMPs near the middle of film.
Local DMPs of thinner films at as a function of coordinate. The symbols and scales are the same as those in Fig. 4.
Overall DMPs of thin films at vs temperature; 엯 for the bulk, ▵ for thick film, ◻ for thick film. and are shown with solid and dashed lines, respectively. An arrow indicates the intersecting point of the two curves of and . The inlet shows the ratio of for the thin films to the bulk as a function of temperature.
Ratio of the soft surface layers to the entire film thickness .
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