We report a detailed study of surface-bound chemical vapor deposition of carbon nanotubes and nanofibers from evaporated transition metal catalysts exposed to ammonia diluted acetylene. We show that a reduction of the Fe/Co catalyst film thickness below 3 nm results into a transition from large diameter (N40 nm), bamboo-like nanofibers to small diameter (∼5 nm) multi-walled carbon nanotubes. Th...

(La0.5,Sr0.5)CoO3 (LSCO) ®lms were prepared by a sol-gel method on silica grown by various methods such as thermal oxidation, plasma enhanced chemical vapor deposition (PECVD) and atmospheric pressure chemical vapor deposition (APCVD). Polyvinyl alcohol (PVA) was used as a wetting agent to improve the surface wetting behavior of the LSCO precursor solution onto the silica. The surface wetting o...

The study of chemical reaction rates or “chemical kinetics” is fundamental to the study of chemistry itself and is intimately connected as well to life’s biochemical and biological processes. Most chemical reactions proceed by a complex mechanism that involves a series of elementary steps and it is often the role of chemical kinetics studies to identify these steps, with one typically expected ...

Thermal barrier coatings (TBCs) provide effective thermal barrier to the components of gas turbine engines by allowing higher operating temperatures and reduced cool‐ ing requirements. Plasma spraying, electron-beam physical vapor deposition, and sol‐ ution precursor plasma spray techniques are generally used to apply the TBCs on the metallic substrates. The present article addresses the TBCs f...

While the traditional and popular realm of polymer synthesis is the liquid phase, the use of vapor-based techniques to deposit polymers has been met with increasing interest over the past decades. The perhaps most relevant example, the deposition of poly(p-xylylenes) via the Gorham process, has been of industrial use in the fabrication of isolating or protective coatings in electronics and biom...

Most conventional chemical vapor deposition (CVD) systems do not have the spatial actuation and sensing capabilities necessary to control deposition uniformity, or to intentionally induce nonuniform deposition patterns for single-wafer combinatorial CVD experiments. In an effort to address this limitation, a novel CVD reactor system has been developed that can explicitly control the spatial pro...