colloids – TechConnect Briefs

Pulsed laser generation of clean colloidal metal nanoparticles

Bärsch N., Bartke D., Barcikowski S., Particular GmbH, DE

In contrast to colloidal chemistry, pulsed laser ablation in liquids is a physical process that generates nanoparticles e.g. from precious metals or alloys directly in water or organic solvents. Zeta potential values up to -80 [...]

Multi-Parameter Characterization of Nanoparticle Dispersions by Size, Count and Scattering Intensity

Griffiths D., Bernt W., Hole P., NanoSight USA, US

Nanoparticle Tracking Analysis (NTA) is a method that has gained increasing popularity for the study of nanoparticle dispersions, providing high-resolution particle size analysis as well as a direct measure of particle count or concentration. By [...]

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 [...]

Polydisperse Mixture of Gold Nano-Particles

Vicuña E., Viera O., Briano J.G., Castro M., Irizarry R., University of Puerto Rico, US

Colloids synthesized in water media, usually from direct reduction of a salt, always exhibit a size distribution, which may be characterized by TEM or SEM measurements. These are in essence polydisperse systems with a dispersion [...]

Modeling Nanosized Colloidal Particle Interactions with Brownian Dynamics Using Discrete Element Method

Li J-F, Yu W-H, Chen C-S, J. Wei W-C, National Taiwan University, TW

Discrete element method (DEM) has been developed in an integrated software system to study ceramic particle suspension and colloidal forming process recently [1, 2, 3]. Particle interactions such as van der Waals attraction, electrical double-layer [...]