Papers – Page 50 – TechConnect Briefs

Funcional lead-free composite

Teixeira G.F., de Oliveira J.A.M., Zaghete M.A., Longo E., Varela J.A., Chemistry Institute, UNESP- Araraquara, BR

In the work reported here was obtained a lead-free NaNbO3 / PVDF composite, starting from photoluminescent ceramics particles with 1D morphology obtained by microwave-assisted hydrothermal method. Photoluminescence spectrum of the NaNbO3 particles shown emission around [...]

ZnO nanorods decorated with Au nanoparticles applied as gas sensors

Gasparotto G., Mazon T., Gasparotto G., Silva R.A., Zaghete M.A., Perazolli L.A., Varela J.A., CTI, BR

Zinc oxide (ZnO) is a n-type semiconductor with energy band gap of 3:37 eV and a large binding energy of 60 meV at room temperature. ZnO nanostructures can be easily obtained with different morphologies by [...]

Ambient Temperature Synthesis and Sintering of Conductive Aqueous Copper Inks

Druffel T., Jha M., Dharmadasa R., University of Louisville, US

Conducting films are becoming increasingly important for the printed electronics industry with applications in various technologies including antennas, RFID tags, photovoltaics, flexible electronics and displays. To date, expensive noble metals have been utilized in these [...]

Hydroxylamine-O-sulfonic acid as a New Reducing Agent for the Formation of Nearly Monodisperse Gold Nanoparticles in water: Synthesis Characterisation and Bioconjugation

Rahme K., Holmes J.D., Notre Dame University (Louaize), LB

Gold nanoparticles (Au NPs), with diameters ranging between 60-150 nm, have been synthesised in water at room temperature by reducing HAuCl4.3H2O with hydroxylamine-o-sulfonic acid in the presence of sodium citrate, as stabilising agent. 15 and [...]

Drug delivery system based on inorganic layered materials

Cunha V.R.R., Petersen P.A.D., Petrilli H.M., Constantino V.R.L., University of Sao Paulo, BR

Layered Double Hydroxides (LDHs) are well known inorganic carriers which have been explored during the development of new materials for medicinal and pharmacological applications. The solubility and chemical stability of guest species can be increased [...]

Controlled Synthesis of Monodisperse Magnetic Porous/Hollow Nanostructures for Biomedical Applications

Kim K.S., Nguyen D.T., Kangwon National University, KR

Recently, studies on therapeutic applications of the magnetic nanoparticles have gained more momentum. The use of magnetic nanoparticles for hyperthermia has shown great promise in the field of nanobiomedicine. The porous/hollow structure also exhibited a [...]

Water Synthesis of Glutathione- capped Cadmium Selenide Quantum Dots and Stabilization by PVP coating at Room Temperature

Arroyo-Vizcarrondo S.A., Beltran-Huarac J., Morell G., Primera-Pedrozo O.M., Universidad Metropolitana, US

Various nanomaterials have been developed throughout the decades, but quantum dots (QDs) have represented one of the successful new biological probes due to their optical properties coming from the semiconductor core material. CdSe QDs were [...]

A Study of Particle Size Distribution in NPP process

Lee C., Lee J-H., Lee C., Lee J-H., Koh S.K., Kaji H., Haysashi M., GL Materials, KR

Noble nanoparticles were fabricated on glucose powder by NPP process, in which nanoparticles were formed on the rotating powder in barrel by using conventional PVD system. A 500 um glucose powders were selected as the [...]

Synthesis of Poly(ST-co-COPSI)particles by soap-free emulsion copolymerization and its optical properties as photonic crystals

Choo H.S., Ha J.M., Lee K-C, Gyeongsang national University, KR

Highly charged, submicron-sized polymeric colloidal particles can self assemble into 3-dimentional(3D) opal structure which is useful template for photonic crystal. In this report, optical properties of poly[Styrene(ST)-co-Allyloxy-2-hydroxypropane sulfonic acid sodium salt(COPSI)] polymeric microspheres with number [...]

Synthesis of nanocrystalline cubic ZrO2:Mn2+ phosphors: Structural and luminescent properties

Fernández-Osorio A., Ramos-Olmos L., Julian C.F., Universidad Nacional Autonoma de Mexico, MX

Nanocrystalline cubic zirconia doped with manganese, solid solutions of Zr1-xMnxO2-x/2 (x=0, 0.1, 0.2 and 0.4), were prepared by the sol-gel method. The Rietveld refinement of the X-ray powder diffraction (XRD) profile of the samples confirms [...]