In this study, we report the use of surface plasmon spectroscopy (SPS) to investigate the self-assembly polymer solution adsorption process in situ. A sealed sample cell made of Teflon was assembled with the substrate initially coated with a positively charged surface using the Langmuir-Blodgett-Kuhn (LBK) deposition technique. The cationic and anionic polymer combinations were comprised mainly of a class of polyelectrolytes called ionenes and several anionic polymers. The solution adsorption process generally showed linear behavior except were the deviation is attributed to a poorly charged initial layer. The adsorption behavior is postulated to be due to conformational requirements and charge distribution of the individually adsorbed polymers. The time of adsorption for each polymer pair was also investigated. The technique promises to be an important tool in determining the mechanism for these types of adsorption processes.

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This article summarizes some recent developments in the field of surface plasmon and guided optical wave microscopies. It is shown that these imaging techniques based on evanescent light allow for a quantitative optical characterization of ultrathin films with a thickness sensitivity of a few Ångstroms and a lateral resolution of µm.

Knowledge of the machining parameters for titanium aluminides of the type γ‐TiAl is essential for the acceptance and application of this new heat‐resistant light‐weight material for high performance components in automobile and aircraft engines. This work evaluates drilling, turning, sawing, milling, electroerosion, grinding, and high‐pressure water‐jetting of primary castings. The results indicate that there is a potential for each machining process, but a high quality of surface finish can only be achieved by some of the processes.