nanoparticles – Page 33 – TechConnect Briefs

Aggregation and Fate of Fullerene Nanoparticles in Aquatic Environments

Chen K.L., Elimelech M., Yale University, US

Fullerene has unique chemical properties and physical structure, and is emerging in a wide range of electronics and biomedical applications. However, toxicity studies have raised concern that fullerene may have adverse human health effects. With [...]

A statistical approach to control particle size of poly(acrylic acid) stabilized iron oxide nanoparticles

Demirer M., Acar H.Y., Koc university, TR

Polymer-coated superparamagnetic iron oxide nanoparticles are interest of wide range of applications from magnetic recording to biomedical applications. Size control, stability and surface functionalization of the nanoparticles are the key issues in the field. Poly(acrylic [...]

Effectively Grinding and Dispersing Nanoparticles Using a Fine Bead Mill

Enderle U., Kolb G., Mende S., Way H., NETZSCH Fine Particle Technology, LLC, US

Dispersing NanoParticles into liquids can be challenging, the tremendous surface area and surface energy which provides the beneficial effects of nanomaterials also prevents easy dispersion into liquids. Conventional technology for dispersing powders into liquids is [...]

Glass Transition Temperature of High Molecular Weight Polystyrene: Effect of Particle Size, Bulk to Micron to Nano

Paik P., Kar K.K., Indian Institute of Technology Kanpur, IN

High Molecular weight nano/micron sized polystyrene (Mv=1X106) was prepared by styrene and hydrogen peroxide. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) measurements indicated that the particles matched with that of the polymer single [...]

Mechanochemical dry synthesis of nanocrystalline semiconductors

Balaz P., Godocikova E., Izdinsky K., Kovac J., Satka A., Achimovicova M., Institute of Geotechnics of Slovak Academy of Sciences, SK

In recent years semiconductor nanocrystals (QD) have attracted much attention due to their great potential in technological applications. Electronic, optical and other properties of QD with respect to corresponding bulk materials are modified considerably, offering [...]

NanoActive Metal Oxides: Unique Materials with Unlimited Potential

Koper O.B., Rajagopalan S., NanoScale Materials, Inc., US

NanoActive materials are novel forms of metal oxides that possess extremely high surface areas (100-700 m2/g), defect-rich morphology (many corner and edge sites), large porosities (up to 1 cc/g), and small crystallite sizes (2-10 nm). [...]

Electric Field Assisted Assembly of Functionalized Quantum Dots into Multiple Layer Thin Films

Dehlinger D.A., Sullivan B.D., Esener S., Heller M.J., University of California San Diego, US

Electric Field Assisted Self-Assembly of Functionalized Nanoparticles into Multiple Layer Thin Films Michael J. Heller, Benjamin Sullivan and Dietrich Dehlinger Departments Bioengineering and Electrical and Computer Engineering University California San Diego La Jolla, CA 92093 Reconfigurable [...]

Tailoring the Surface Chemistry of Nanoparticles in Ceramic Processing

Studart A.R., Gonzenbach U.T., Amstad E., Tervoort E., Gauckler L.J., ETH Zürich, CH

The increasing use of ceramic nanoparticles for the fabrication of novel functional parts and devices has brought several new possibilities and challenges in the field of ceramics. Surface chemistry is known to play a major [...]

Laser pyrolysis – a platform technology to produce functional nanoscale materials for a range of applications

Chiruvolu S., Li W., Ng M., Du K., Ting N.K., McGovern W.E., Kambe N., Mosso R., Drain K., NanoGram Corporation, US

Nanoscale materials continue to generate ever increasing levels of interest for applications in a broad-range of fields. Concurrently variety of synthesis methods are being explored and developed for the synthesis and production of nanoparticles including [...]

Flowability Modification of Fine Powders by Plasma Enhanced Chemical Vapor Deposition

Spillmann A., Sonnenfeld A., Rudolf von Rohr Ph., Swiss Federal Institute of Technology (ETH), Institute of Process Engineering, CH

Within the scope of this work a novel process to improve the flowability of fine powders is investigated. Nanoparticles are generated by plasma enhanced chemical vapor deposition (PECVD), and deposited on the surface of the [...]