By James D. Batteas, Chris A. Michaels, Gilbert C. Walker
Applications of Scanned Probe Microscopy to Polymers stresses the research of polymer and biopolymer surfaces utilizing the ever-expanding methodologies of scanned probe microscopies. This ebook comprises experiences of optical homes by way of near-field methodologies, neighborhood mechanical houses of polymer motion pictures via AFM, the dynamics and mechanics of unmarried molecules probed through AFM, and methodologies for more desirable imaging modes. a major concentration of this ebook is the quantitative size of floor houses by means of scanned probe suggestions, which illustrates how the sphere has developed and what new demanding situations lie forward. functions of Scanned Probe Microscopy to Polymers should be precious to scholars and pros trying to find stories that illustrate what forms of polymer fabric homes will be probed through scanned probe microscopies.
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This combination of the sub-diffraction spatial resolution attainable in the near-field with the high chemical specificity of vibrational spectroscopy promises a powerful analytical technique that overcomes critical measurement limitations of both far-field vibrational microscopes (low spatial resolution) and scanned probe microscopes (lack of chemical specificity). Both Raman (1-8) and IR (9-18) spectroscopy have been exploited in near-field measurements; the optimum choice depending generally on the magnitude of the cross sections for the relevant optical transitions.
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In this paper, we summarize the results of both experimental and theoretical studies performed in our group on photorefractive polymer/liquid-crystal composites and present new results in support of our previous conclusions (17). The specific samples studied are films formed from aqueous emulsions of a nematic liquid crystal mixture (E7) and poly(vinyl alcohol). Perylene and Ν,Ν'di(n-octyl)-l,4,5,8-naphthalenediimide (NDI) are dissolved in the liquid crystal and serve as the photoexcitable electron donor and acceptor, respectively.
Applications of Scanned Probe Microscopy to Polymers by James D. Batteas, Chris A. Michaels, Gilbert C. Walker