nanoparticles – Page 21 – TechConnect Briefs

Synthesis of monodispersed MFe2O4 (M=Fe, Co, Ni) ferrite nanoparticles: effect of reaction temperature on particle size

Altavilla C., Leone C., Sannino D., Sarno M., Ciambelli P., University of Salerno, IT

The possibility of preparing monodispersed transition metal-oxides nanoparticles covered by functionalized long chain organic molecules, in the sub size range of 20 nm, has recently open an entire field of research. In fact, inorganic core [...]

Synthesis and Characterization of Co-Zn Ferrite Nanocrystals for Magnetocaloric Applications

Urcia-Romero S., Renteria B., Gutiérrez G., University of Puerto Rico, PR

Cobalt ferrite (CoFe2O4) is known for its high coercivity, chemical stability and high sensitivity of its Curie temperature (TC) with Zn-doping. A ferrofluid bearing this type of ferrite nanocrystals could be then considered good candidate [...]

Colored nanoparticles:composition and application to protein fibres and hair

Gomes J., Sampaio S., Maia F., University of Minho, PT

The coloration of hair is usually done with dyes that need harsh post treatments with products such as ammonia, so as to have durability. In this work, we have developed nanoparticles (medium range 200 nm), [...]

Measurement of nanofiller removal by abrasion

Tardif F., Guiot A., Golanski L., CEA-Liten, FR

A strong release limitation of single nanoparticles from the commercial manufactured “nanoproducts” is absolutely necessary to protect the consumers and represents also a pragmatic way to facilitate acceptance for nanomaterial commercialization before obtaining definitive toxicological [...]

Flame Spray Pyrolysis for the Production of Nanoparticles

Bishop P., Henderson G., Rajantie H., Thiébaut B., Johnson Matthey Technology Centre, UK

Johnson Matthey is a speciality chemicals company focused on its core skills in catalysts, precious metals and fine chemicals. Johnson Matthey has continued to develop its technology for almost 200 years, demonstrating the company’s ability [...]

Self-assembled Manganese Dioxide Thin Films as Novel Electrode Material for the Fabrication of Thin–Film Supercapacitors

Cem Pang S., Wee B.H., Universiti Malaysia Sarawak, MY

Self-assembled manganese dioxide thin films were being deposited directly onto metalized plastic supporting substrates by a novel horizontal submersion process which entailed spontaneous self-assembly of preformed manganese dioxide nanoparticles under optimized deposition conditions. Desired film [...]

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 [...]

Novel Approach for Preparation of Organic-Inorganic Hybrid Nanocomposites

Kim I-J., Kwon K.H., Cheil Industries Inc., KR

Novel organic-inorganic hybrid nanocomposites were synthesized through emulsion grafting polymerization in the presence of silica particles coated with methacryloxy(propyl)trimethoxysilane. Well-defined polymer chains were grown from the nanoparticle surfaces to yield individual particles composed of a [...]

The anti-ultraviolet nano-fibers formed during electrospinning

Lin Y-N., Hsu R-Q., Chang K-M, National Chiao Tung University, TW

In this study, electrospinning is a straightforward method to produce anti-ultraviolet polymer fibers. The new types of anti-ultraviolet nano-fibers were produced by polylactic acid (PLA) and benzophenone. We also used different anti-ultraviolet nano particles (TiO2, [...]

Scalability and Control of Electrophoretic Directed Assembly of Nanoparticles

Yilmaz C., Cha N-G, Somu S., Busnaina A., Northeastern University, US

The nanoscale directed assembly of nanoparticles has a many applications in biotechnology, energy, electronics and nanomaterials. Directed assembly of nanoparticles for biosensor devices, nanowire and interconnects are being conducted at the CHN. The nanoparticle based [...]