US – Page 275 – TechConnect Briefs

Shape-Controlled Synthesis and Catalytic Behavior of Supported Platinum Nanoparticles

Liu C., Fransson M., Zhou B., Headwaters Technology Innovation LLC, US

Shape-Controlled Synthesis and Catalytic Behavior of Supported Platinum Nanoparticles Selective hydrogenation reaction is influenced by many factors, which include the presence of catalytic activators or poisons, the temperature, pressure, solvent agitation and other conditions specific [...]

Comparative Study Of Effect Of Various Reducing Agents On Size And Shapes Of Gold Nanoparticles

Kumar A., Dhawan N., Stanford University, US

Nanoparticles have attracted considerable interest because of their unique optical, electromagnetic and catalytic properties that differ from bulk ones. The origin of these properties is their large surface to volume ratio and from the coherent [...]

Digital Matrix Corp

Derrig L., Kuzmin A., Digital Matrix Corp, US

Electroless and Electrolytic plating has had to keep up with the demands in developing new technologies to meet the needs of filling nano and micro structures. Requirements have been for plating angstrom thin layers with [...]

Assessment of the Impacts of Packaging, Long-Term Storage, and Transportation on the Military MEMS

Zunino III J.L., Skelton D.R., US Army ARDEC, US

The Army is transforming into a more lethal, lighter and agile force. Enabling technologies that support this transition must decrease in size while increasing in intelligence. Micro-electromechanical systems (MEMS) are one such technology that the [...]

Nanomechanical characterization of UV curable hyperbranched polymers

Kim J., Chen Z., Chisholm B., Patel S., North Dakota State University, US

Hyperbranched polymers were explored to develop UV-curable, protective coatings for aluminum 2024-T3 and their viscoelastic and mechanical properties were characterized using nanoindentation techniques. The coating system consists of a hyperbranched polyester acrylate (CN2300, Sartomer Inc), [...]

Fluorescence Tags-Based Inspection of Barrier Coatings for Organic Light Emitting Diodes and Polymer Packages

Zhang Y., Zhang Y.Z., Zhang Y., Zhang Y.Z., Miller D.C., Bertrand J.A., Yang R., Dunn M.L., George S.M., Lee Y-C, Invitrogen/Molecular Probes, US

Barrier coatings are essential to protect organic light emitting diodes (OLED) as well as polymer packaged components from moisture- and oxygen-aided deteriorization. One such coating technology is atomic layer deposition (ALD), used here to grow [...]

Synthesis and Magnetic Characterizations of Manganite-Based Composite Nanoparticles for Biomedical Applications

Pradhan A.K., Bah R., Konda R.B., Mundle R., Mustafa H., Bamiduro O., Rakhimov R.R., Wei X., Sellmyer D.J., Norfolk State University, US

Chemically synthesized highly crystalline lanthanum strontium manganite LaSrMnO3 and Eu-doped Y2O3 and their composites, yielding nanoparticles of size 30–40 nm are reported in this paper. Magnetic measurements performed on the synthesized nanoparticles and composites showed [...]

Identification of individual nanocrystal structures and morphologies by TEM

Moeck P., Portland State University, US

Two novel methods for the structurally identification of a nanocrystal from either a single high resolution (HR) transmission electron microscopy (TEM) micrograph or a single electron precession diffractogram are described. While the structural information that [...]

Interfacial Nanocomposite Characterization by Nanoparticle Debonding

Killgore J.P., Overney R.M., University of Washington, US

A novel nanoscale thermomechanical methodology is introduced involving resistively heated cantilevers, also referred to as heated tip AFM (HT-AFM), that provide direct access to the interfacial interaction strength between poly(trimethyl silyl propyne) (PTMSP) - silica [...]

Use of Lateral Force Microscopy to Elucidate Cooperativity and Molecular Mobility in Amorphous Polymers and Self-Assembling Molecular Glasses

Knorr Jr. D.B., Killgore J.P., Gray T.O., Overney R.M., University of Washington, US

A novel scanning probe methodology based on lateral force microscopy is presented wherein kinetic friction measurements, obtained as a function of velocity for various temperatures, are used to deduce apparent Arrhenius-type activation energies for surface [...]