Alan K. Mo, Victoria L. Brown, Brandon K. Rugg, Thomas C. DeVore, Harry M. Meyer, Xiaofeng Hu, W. Christopher Hughes and Brian H. Augustine Understanding the Mechanism of Solvent-Mediated Adhesion of Vacuum Deposited Au and Pt Thin Films onto PMMA Substrates Advanced Functional Materials 23
Noble metal deposition onto polymeric substrates is important for electrodes in biomedical, microelectronic, and microfluidic applications. Optical microscopy images of adhesion tests on substrates are shown poly(methyl methacrylate) (PMMA) for arrays of Au dots deposited via electron beam evaporation pretreated with isopropyl alcohol, a remote O2 plasma, fluoroform vapor, and spin-cast with chloroform and bromoform. Density functional theory calculation of a model PMMA/CHCl3/Au system shows that residual solvent molecules result in improved metal adhesion with hydrohalocarbon pretreatment.
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