Papers – Page 347 – TechConnect Briefs

A novel method for bacteria inactivation using Engineered Water Nanostructures

Pyrgiotakis G., McDevitt J., Yamauchi T., Demokritou P., Harvard School of Public Health, US

Herein we present a novel method for microbial disinfection that utilizes the formation of unique Engineered Water Nanostructures (EWNS) generated via the electrospraying of water. Electropsray is a method widely, used to generate aerosols and [...]

Nanomaterials and nanotechnologies for the conservation of the materials of cultural heritage

Rathousky J., Kalousek V., Zouzelka R., J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, CZ

Conservation science is one of the most complex topics in the materials science as it requires expertise ranging from the history of art and archaeology to the advanced analytical and physical chemistry. However, the recent [...]

Water-soluble nanoparticles as an universal imaging tool

Niehaus J., Becker S., Schmidtke C., Ness D., Werner K., Weller H., Center for Applied Nanotechnology, DE

Here we present a two step concept for phase transfer of NPs soluble in non-polar media. The first step is an exchange of the stabilizing organic molecules against a multidental binding short chain polymer. In [...]

Photocatalytic activity of mesoporous titanium dioxide nanoparticles under visible light irradiation

Ikuma Y., Kida S., Kuramoto R., Niwa K., Anandan S., Kanagawa Inst. of Tech., JP

Using surfactant and other chemicals, nano-template consisting of SiO2 was first prepared. Then the template was treated in titanium tetra-isopropoxide dissolved in 1-propanol to convert silicon into titanium. The product was heated in air or [...]

Microwave-assisted hydrothermal synthesis of ZnO powders with different reagents

Xavier C.S., de Moura A.P., Li M.S., Longo E., Varela J.A., Cava S., Universidade Federal de Pelotas, BR

Zinc oxide (ZnO) is an exceptionally important semiconductor with a direct wide band gap (3.37 eV) and large excitation binding energy (60 meV) at room temperature [1]. In this work, zinc oxide powders were synthesized [...]

Influence of an alternating current on silver nanoparticles’ formation processes in a polymeric matrix

Amerkhanova Sh.K., Belgibaeva D.S., Shlyapov R.M., Tatibaeva M.S., Erzhanova Sh.A., Karaganda State University, KZ

Influence of an alternating current with various frequencies from 500 to 5000 Hz on silver nanoparticles formation process in the presence of polyvinyl alcohol is investigated. It is shown that influence by an alternating current [...]

Composition and magnetic properties of zinc ferrite nanoparticles prepared by co-precipitation method at different temperatures

Reisi Shahraki R., Seyyed Ebrahimi S.A., Ebrahimi M., University of Tehran, IR

In this work, single phase zinc ferrite nanoparticles have been prepared by coprecipitation method at 40, 60 and 80 °C without any subsequent calcination and the effect of the reaction temperature on the composition, structural [...]

Structural refinement and photoluminescence properties of cube-like (Ca1-xCux)TiO3 crystals synthesized by the microwave-hydrothermal method

Oliveira L.H., de Moura A.P., Cavalcante L.S., Gutierrez S.A., Longo E., Varela J.A., Universidade Federal de São Carlos, BR

In this work, (Ca1-xCux)TiO3 crystals with (x = 0, 0.01 and 0.02), were synthesized by the microwave-hydrothermal method at 140ºC for 32 min. The photo-physical properties were studied to analyze the influence of Cu2+ doping [...]

Carbon coated FeRu and CoRu nanomagnets and their potential for medical application

El-Gendy A.A., Hampel S., Leonhardt A., Khavrus V.O., Büchner B., Klingeler R., National Institute for standards, EG

This work presents a novel synthesis procedure for carbon-coated magnetic nanoparticles and their detailed characterization regarding structure, morphology, and magnetic properties. To be specific, the high pressure chemical vapour deposition technique (HPCVD) has been applied [...]

MD Simulations on the Momentum Transfer to Nano Contaminant Particle on Wafer Surface in Collisions with Cleaning Bullets

Choi M.S, Lee J.W., POSTECH, KR

This study aims to clarify the basic mechanism through MD simulations on momentum transfer during collisions between target contaminant and cleaning bullet particles both in the nanometer size range. Even in conditions where the contaminant [...]