BR – Page 2 – TechConnect Briefs

Proposal of a router circuit based on nanoelectronic devices

Câmara B.O., Costa J.C., University of Brasilia, BR

An information router in a communication network should deliver data packages from one node to other node. For executing this delivery task efficiently, the router should choose the best path between the nodes. The best [...]

Skin permeation of hydrophobic drugs loaded into polymeric nanoparticles

Feitosa V.A., Balogh T.S., Guimarães K.L., Zanin M.H.A., Oliveira A.M., Cerize N.N.P., Institute for Technological Research – IPT, BR

Polymeric nanoparticles have been employed for topical pharmaceutical applications due to its capacity to carry drugs across the skin. Biocompatible polymers are extensively applied as coating nanoparticles allowing them present controlled physical and chemical characteristics. [...]

Recycled PET Nanofibers Produced by Electrospinning Technique

Gomes S.S., Oliveira A.M., Maia A., Zanin M.H.A., Institute for Technological Research, Group for BioNanoManufacturing, BR

The universe of science and materials technology has been revolutionized with the development of materials at nanoscale, which contribute to the improvement of material properties and development of new materials, such as non-woven recycled polyethylene [...]

Synthesis and characterization of magneto-fluorescent nanoparticles with excited-state intramolecular proton transfer

Oliveira E.M.N., Coelho F.L., Campo L.F., Zanini M.L., Papaléo R.M., Pontifical Catholic University of Rio Grande do Sul, BR

Superparamagnetic iron oxide nanoparticles (SPION) coated with different shells are hybrid materials that can be used in biomedical imaging, due its excellent biocompatibility and biodistribution in tissue. Different dyes have been attached to the nanoparticles [...]

Electrospun nanofibers for Sustained Delivery of Cetylpyridinium Chloride for Buccal Topical Application

Zanin M.H.A., Santos V.A., Oliveira A.M., Cerize N.N.P., Borsatti M.A., Institute for Technological Research of the State of São Paulo - IPT, BR

The aim of this study was to prepare electrospun polymeric nanofiber mat composed of polyvinylpyrrolidone (PVP-Kollidon® 90F), ammonio methacrylate copolymer type B (PMMA-Eudragit® RS100) and cetylpyridinium chloride (CPC), 10:10:1 (wt/wt%) and its characterization for buccal [...]

In Situ Generated Turbostratic Graphite: A New Family of Self Lubricating Iron Based Composites

Binder C., Binder R., Binder C., Binder R., Consoni D.R., Hammes G., Schroeder R., Klein A.N., Binder C., Binder R., de Mello J.D.B., Schroeder R., Universidade Federal de Santa Catarina, BR

In this paper we present a new processing route able to produce a homogeneous dispersion of in situ generated, discrete solid lubricant particles in the volume of sintered steels produced by metal injection molding. Preliminary [...]

Microwave-assisted hydrothermal synthesis of Cu-doped titanate nanotubes: photoluminescence and photocatalysis properties

Manfroi D.C., Andrade L.P., Cavalheiro A.A., Jos A.A., Teixeira G.F., Perazolli L.A., Varela J.A., Zaghete M.A., Universidade Estadual Paulista, BR

Alkali titanates have been intensively investigated mostly because of their properties. And the interest for transition metal doping of 1D titanate nanostructures is enormous, especially copper. In the present work we report the synthesis of [...]

Surfactants Nanocarriers to Enhanced oil Recovery (EOR)

Nascimento R.S.V., UFRJ, BR

The use organic surfactant nanocarriers as interfacial tension reducing agents is proposed in this work. These particles are able to permeate into the pores of the reservoir and release the surfactant by solubilization of the [...]

Polymer Nanofluid for enhanced oil recovery: A design of polystyrene nanoparticles, transport behavior evaluation and unconsolidated flooding test

de Araujo L.L.G.C., de Avila J.N.L., de Araujo L.L.G.C., de Avila J.N.L., Drexler S., Rodrigues Jr. J.A., Nascimento R.S.V., UFRJ, BR

This work focuses on the design of a nanoparticle containing polymer and surfactant containing that would be used in solution as a nanofluid for enhanced oil recovery. The nanoparticle is formed by crosslinking chemical reactions [...]

Preparation of ZnO Nanowires for Solar Cells Aplicattion

Fernandes S.L., Zaghete M.A., Graeff C.F.O., Varella J.A., Longo E., UNESP, Universidade Estadual Paulista, BR

So far, the most successful solar cells have been produced using porous nanoparticles combined with TiO2 films. However, ZnO has emerged as a promising alternative to replace TiO2, with marked improvements in performance of the [...]