S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Journal Papers (저널논문_기계항공공학부)
Free Energy of Distorted Polymer Films in Highly Confined Three-Dimensional Systems
- Suh, K. Y.; Lee, Hong H.
- Issue Date
- American Chemical Society
- Macromolecules, 2001, 34, 6456
- We present a calculation of the free energy for an isotropic polymer film deformed according to a sinusoidal perturbation. Our calculation is for two cases. One is for polymer film/substrate structure that requires a simple extension of the earlier two-dimensional case of Fredrickson et al. As expected, the calculation shows that the wave vectors in x and y directions are reduced to one simple wave vector, q = (q(x)(2) + q(y)(2))(1/2). The other is for polymer film/substrate/poly(dimetliylsiloxane) (PDMS) wall structure, which is the geometry of our recent experiment. For this laterally confined system, the free energy is dominated by two wave vectors, q and q(1) where q(1) is given by q(1) = (q(2) + 2/L-2)(1/2) and L is the half channel width. The limiting cases of long and short wavelength regimes of the latter structure are also studied.
- 0024-9297 (print)
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