润湿
单层
材料科学
氘
相变
聚合物
相(物质)
表面能
润湿转变
结晶学
热力学
物理化学
分析化学(期刊)
物理
纳米技术
化学
原子物理学
有机化学
复合材料
量子力学
作者
Jan Genzer,Edward J. Krämer
标识
DOI:10.1103/physrevlett.78.4946
摘要
We investigate a wetting reversal transition in thin films of two-phase mixtures of poly(ethylene-propylene) (PEP) and its deuterated analog (dPEP) on substrates covered by self-assembled monolayers (SAM) whose surface energy, ${\ensuremath{\gamma}}_{\mathrm{SAM}}$, is tuned by varying the SAM composition. As ${\ensuremath{\gamma}}_{\mathrm{SAM}}$ increases from 21 to $24\mathrm{mJ}/{\mathrm{m}}^{2}$, a transition from a dPEP/PEP/dPEP/SAM to a dPEP/PEP/SAM structure occurs at increasing ${T}_{C}\ensuremath{-}T$, where ${T}_{C}$ and $T$ are the critical and transition temperatures, respectively. The dependence of $T$ on ${\ensuremath{\gamma}}_{\mathrm{SAM}}$ is predicted by a simple model from surface and interfacial energies of PEP/dPEP.
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