Papers – Page 676 – TechConnect Briefs

Nonlinear Optical Property of Gold nanoparticles/Polymer Hybrid Materials

Dai Q., Zou J., Huo Q., Nanoscience Technology Center, University of Central Florida, US

The ability to control the assembly of nanoparticle building blocks is very important in the development of new nanostructured materials and devices. It is well known that the properties of nanostructured materials are not only [...]

Synthesis of Water Soluble Gold Nanoparticles and Adsorption of Dyes onto Gold Nanoparticles

Narband N., Parkin I., Wilson M., Gil Thomas J., University College London, UK

The synthesis of gold nanoparticles was performed by the Turkevich method. The effect of adding various dyes to gold hydrosols was investigated. It was found that the U. V. absorption characteristics of the dyes change [...]

Reversible Formation of Silver Nanoparticles in Poly(vinyl alcohol)-Based Thin Films via Electrochemical Switching

Black J.R., Cammaratta V., Gaddy G.A., Slaten B.L., Mills G., Auburn University, US

Ag particles with nanometer dimensions were generated reversibly in the presence of air within micron-thick polymer films using electrochemical techniques.

New process for fabrication of microcomponents using metal nanopowder

Lee H.M., Choi C-J, Korea Institute of Machinery and Materials, KR

We developed a new process to manufacture a soft mould for the small parts using two kinds of polymer, SU-8 for a master mould and Polydimethylsiloxane (PDMS) for a soft mould and produced the small [...]

Direct Laser Writing of Microtunnels and Reservoirs on Nanocomposite Materials

Chen H., Liu X., Muthuraman H., Zou J., Wang J., Dai Q., Huo Q., University of Central Florida, US

Using the efficient photon—thermal energy conversion property of gold nanoparticles, a direct laser writing method has been developed for the fabrication of microstructures including microtunnels (see figure), holes, and reservoirs on nanoparticle/polymer composite thin films. [...]

Fabrication of microcomponent using Fe based nanopowders

Choi C-J, Lee H.M., Korea Institute of Machinery and Materials, KR

The metallic microcomponents were fabricated by pressureless sintering of nano-sized pure Fe and 17-4 PH stainless steel nanopowders. The compacting and sintering behaviors of nanosized Fe powders have been evaluated and compared with those of [...]

Experiments on removing nano particles on a substrate using a supersonic particle beam

Lee J.W., Lee M.J., Lee J.W., Lee M.J., Yi M-Y, Pohang University of Science and Technology, KR

Cryogenic particle beam can be an effective means of removing nano-sized contaminant particles from a substrate surface. In order to generate a particle beam of high intensity and controlled size and temperature, Argon gas was [...]

Zinc Sulfide and Cadmium Sulfide based Nanocrystals and Shells

Balaguera M., Perales-Perez O., Rivera-Montalvo L., Singhal R., Tomar M.S., University of Puerto Rico, PR

The objective of the current research is to synthesize CdS, ZnS nanocrystals through a two phases-method were quantum dots moved from the aqueous phase to the organic one after proper coating of the particles by [...]

Effect of Reaction Temperature on the Structural and Optical Properties of Zno Nanocrystals

Parra-Palomino A., Sotomayor C., Perales-Perez O., Singhal R., Voyles P., Tomar M.S., University of Puerto Rico, PR

The present research addressed the size-controlled synthesis of ZnO nanocrystals at different temperatures. In order to study systematically the dependence of crystal size with synthesis conditions in ethanol, stable suspensions of these nanocrystals were produced [...]

Characterization of CdSe Nanocrystals and their Interaction with Micellar Aggregates by Means of Capillary Electrophoretic Techniques

Oszwaldowski S.O., Vasicek L., Tonev A., Roberts K.P., The University of Tulsa, US

Characterization of nanocrystals is crucial for the development of many chemical methods based on this technology. For this, there are several techniques, mainly microscopic, and recently capillary electrophoretic techniques, that have been proposed. In our [...]