nanoparticles – Page 25 – TechConnect Briefs

Silver Nanoparticles Synthesis from Highly Concentrated Solutions

Klein G., Meyer E.M., Si-Ahmed L., Metalor Technologies SA, CH

Silver nanoparticles are nowadays of great interest; either for their antibacterial properties or as a conductive filler in electronic applications. In both cases, silver nanoparticles have to be optimally dispersed in a polymeric matrix while [...]

Optical properties of 2D nanoparticle arrays

Portal S., Vallvé M.A., Arteaga O., Ignes-Mullol J., Bertran E., FEMAN group, ES

The self-assembly of nanometric size particles in large area compact monolayers has recently attracted considerable interest in terms of the fabrication of new optical nanostructured devices of macroscopic dimensions. These nanometric arranged surfaces present a [...]

A Novel Method for the Production of a Vast Array of Metal, Metal Oxide, and Mixed-Metal Oxide Nanoparticles

Woodfield B.F., Liu S., Boerio-Goates J., Astle L., Brigham Young University, US

In this paper we discuss the materials that can now be produced using a novel method for producing large quantities of high-purity metal, metal oxide, and mixed-metal oxide particles. These nanoparticles are uniform in size [...]

Introduction of Mesopority in Zeolites Using Nanoparticles Used as Hard Templates

García Martínez J., Carrillo A.I., Linares N., University of Alicante, ES

Herein we described a simple new strategy based on the synthesis of zeolites in the presence of inorganic nanoparticles used as hard templates. These nanoparticles can be conveniently removed by simple, inexpensive chemical treatment (usually [...]

Templated Self-Assembly of 5 nm Gold Nanoparticles

Ocola L.E., Lin X-M., Argonne National Laboratory, US

Combining top-down electron beam lithography and bottom-up colloidal chemical assembly can potentially lead to large scale patterning of nanocrystals on arbitary substates. Our approach consists of fabrication of templates from hydrogen silsesquioxane (HSQ) on treated [...]

DNA-guided Assembly of Organized Nano-Architectures

Gang O., Maye M.M., Nykypanchuk D., Xiong H., van der Lelie D., Brookhaven National Laboratory, US

Incorporation of DNA into nano-object design provides a unique opportunity to establish highly selective and reversible interactions between the components of nanosystems. Assembly approaches based on the nano-object’s addressability promise powerful routes for creation of [...]

Nanostructured Biomolecular Assemblies Based on DNA-Protein Interactions

Sroga G.E., Dordick J.S., Rensselaer Polytechnic Institute, US

Directed, biologically-driven self-assembly has the potential to yield hybrid multicomponent architectures with applications ranging from nanoelectronic devices to smart drug delivery systems and responsive materials. To enable these applications, it is critical to gain control [...]

Micropatterning Layers by Flame Aerosol Deposition – Annealing

Tricoli A., Graf M., Mayer F., Kühne S., Hierlemann A., Pratsinis S.E., PTL, CH

The development of scalable methods, which effectively bind nanoparticles to surfaces and provide precise patterns, is a key step towards the commercial exploitation of the distinctive properties of nanoparticles. In this context, the direct deposition [...]

Preparation of Copper-Bearing Nanofluids for Thermal Applications

Velasco A.F., Perales-Perez O.J., Gutiérrez G., University of Puerto Rico, PR

Stable suspension of nanometer solid particles in suitable solvents, so-called nanofluids, has shown enhanced thermal conductivity when compared with the fluid base. This feature enables these suspensions to be considered a promising material for efficient [...]

Generalized model for the aggregation rate of colloidal nanoparticles and clusters induced by shear in the presence of repulsive interactions

Lattuada M., Morbidelli M., ETH Zürich, CH

Coagulation of colloidal nanoparticles in the presence of shear is a key step in processing of many particulate materials, polymeric nanoparticles, food products etc. In the case of charged nanoparticles, coagulation is usually carried out [...]