Papers:
Production of High Surface Area Oxygen Sensitive Powders by Na Flame Synthesis
Cabot Corporation is developing a new particle generation platform that is ideally suited for the production of oxygen sensitive nano-scale powders. The Na Flame Synthesis process is based on the hypergolic vapor phase reaction between [...]
Nanoscale Plasma Surface Modification of Powders
New results of the plasma surface modification of fine-grained temperature sensitive particles are presented. Nanoparticles are deposited on larger substrate particles in a specially designed plasma chamber to improve the macroscopic powder properties as flowability [...]
Rifampicin nanosuspension production using microfluidic device
Schianti J.N., Cerize N.N.P., Oliveira A.M., Derenzo S., Gongora-Rubio M.R., Polytechnic School - University of São Paulo, BR
In this work the results of a study of Rifampicin nanoprecipitation through antisolvent technique are presented, using microfluidic devices. Rifampicin is commonly used in Tuberculosis treatment and presents variability in bioavailability. The particle size and [...]
Re-dispersible ZrO2 powders for transparent high RI nanocomposite
Previous products of nano-ZrO2 usually come in the form of dispersed sol. When they are to be used in organic/inorganic composite, the solvent accompanied may not be compatible with the target polymer system. We have [...]
Synthesis of Nano-Sized Ferrite Materials for H2 Generation from High Temperature Water-Splitting Reaction
As the current research trends in H2 generation using thermochemical water-splitting reaction are focused towards lowering the H2 generation temperatures, it is believed that the nano-sized ferrite materials with porous morphology will significantly reduce the [...]
Engineered Pigment Nanoparticles: Bottom-up Synthesis, Characterization, and Performance Properties
Carlini R., Makeiff D.A., Allen C.G., Gardner S.J., Paraguay-Delgado F., Malac M., Li P., Xerox Research Centre of Canada, CA
High performance organic nanopigments are an increasingly important class of functional nanomaterials that possess physical properties ranging between molecular and bulk materials. These nanomaterials have been utilized in a variety of important commercial applications including [...]
Synthesis, tuning of electrical conductivity and self-assembly of niobium doped titania nanoparticles
Controlling the synthesis of ultrasmall, stable oxide nanoparticles of different compositions and functionality is a continuing quest of nanoscience. Here we report on a solvothermal procedure that enables the preparation of crystalline niobium-doped and undoped [...]
Dielectric Constant, Loss and Breakdown for Ultem containing BaTiO3 Nanoparticles
Lomax E.A., Lomax J.F., Lomax E.A., Lomax J.F., Lu S.C., Calame J.P., Fontanella J.J., Edmondson C.A., Wintersgill M.C., U.S. Naval Academy, US
The need for improved energy storage devices prompts interest in developing new dielectric materials for high energy capacitors. This work reports data on the properties of cast films of BaTiO3 nanoparticles (high dielectric) in the [...]
Plasmonic Biosensors with biocompatible nanosilver
Sotiriou G.A., Sannomiya T., Teleki A., Voeroes J., Pratsinis S.E., Particle Technology Laboratory, ETH Zürich, CH
In this study, silica-coated nanosilver particles were made by flame aerosol technology. The effect of the silica coating on the morphology of the particles, as well as their biocompatibility was examined. Finally, the potential of [...]
Silver Chloride – Wool Nanohybrid Materials: Synthesis and Properties
The development and characterisation of a new nanowool hybrid material formed by functionalising merino wool with silver chloride nanoparticles is presented. The nanoparticles are formed directly on the surface and inside the wool fibre. Initially [...]
Removal of 10-nm contaminant particles from a wafer surface with supersonic CO2 particle beam
Contaminant control is becoming a major issue of nano-scale devices. Cryogenic aerosol beam using micron-sized aerosol particles has long been successfully used to remove contaminant particles (CPs) down to 50nm, and supersonic particle beam using [...]
Surface modification of powders and nanostructure deposition in the afterglow of a low power barrier discharge at atmospheric pressure
The precipitation of solid-state sphere-like nanostructures from an organosilicon precursor at atmospheric pressure is investigated in the prospect of the improvement of powder flowability by the attachment of nanoscopic spacers to the powder particles surfaces. [...]
Synthesis of nanocrystalline ZnO powder using ultrasonic atomization technique and application of its thick films for highly toxic gases
ABSTRACT: Nanocrystalline ZnO powder was prepared using ultrasonic atomization technique. Thick films of this powder were prepared using simple screen printing technique. Pt-modified-ZnO (platinum activated) films were obtained by dipping pure ZnO films into an [...]
Synthesis of Molybdenum Nanoparticles by RF Plasma
Molybdenum nanoposders have been synthesized in a RF plasma by controlling the various process paarameters. The obtained Mo nanopowders are characterized by SEM, TEM, and XRD. Mo nanopowders are sintered to a pellet with ultra-fine [...]
Preparation and characterization of PPy-CD nanospheres with a core-shell nanostructure
The delivery of unique nanospheres has aroused wide attention due to the potential applications in optical, electrical, magnetic, and biological devices. Special attention has recently been paid to the methods for controlling the size and [...]
Wet organometallic chemistry for palladium nanoparticles synthesis performed in an organic media and under supercritical conditions in microreactors
Nanoparticles are been produced in a microreactor under different operating conditions, spefically under supercritical CO2. The known organometallic chemistry is been used to create Pd-nanoparticles. Compared to the batch process the processing time could be [...]
Hydrothermal Synthesis and Properties of Hierarchical ZnO and Eu-doped ZnO 3D Structures
Verissimo C., Abbaspourrad A., Sunter K., Capasso F., Moshkalev S., Weitz D., University of Campinas - UNICAMP, BR
Hierarchical oxide nanostructures are very promising materials for different applications, such as gas sensing, due to their high surface area. Literature shows that hierarchical nanostructures improve gas sensing response and response speed. This effect is [...]
Synthesis of nanocrystalline nitrate enclathrated zeolite with intermediate framework structure between sodalite (SOD) and cancrinite (CAN)
Synthesis of nitrate enclathrated nanocrystalline aluminosilicate zeolite was performed in the system Na2O-SiO2-Al2O3-H20-NaNO3-(TEA) under superalkaline low temperature conditions at 333 K. Formation of nanoparticles occurred already after 3 hours with sizes not exceeding 50 nm [...]
Green and Continuous Hydrothermal Synthesis of Nanophosphors for Biomedical Applications
The luminescent properties of Y2O3:Eu have attracted considerable research interest due to the emission and chemical stability of the oxide phosphor. Subsequently, we evaluated the calcination of YOOH:Eu (4% dopant) synthesised directly in a continuous [...]
Controlling the Size and Morphology of Silver Nanoparticles: Role of Chemical Routes
The preparation of nanoparticles with well defined size and morphology is an important challenge for various industrial applications. Silver nanoparticles with controlled size and morphology have been prepared successfully through various chemical routes (Inverse microemulsions, [...]
Electrical conductivity studies of nanocrystalline Dy3+ doped BaMoO4, synthesised by sol-gel process
Solid oxide fuel cells (SOFCs) have attracted great attention in electrochemical devices because of their high energy conversion efficiency, little pollution and widely flexible fuel choices. Scheelite type based oxide ion conducting materials like PbWO4, [...]
Simple, open air method to synthesize monodisperse and size selective PbSe quantum dots
Simple, open air method to synthesize monodisperse and size selective PbSe quantum dots is reported here. PbCl2 complexed with oleylamine was used as the lead precursor. Se powder dissolved in 1-octadecene was used as the [...]
Characterization of Catalyst Effect on Carbon Nanopearls
This presentation focuses on the effect of the Ni catalyst size on the structure of carbon nanopearls (or carbon spheres). Carbon nanopearls are known to have electronic properties, which make them ideal for cold cathode [...]
One Pot vs Two Steps Synthesis of Fluorescent Gold Nanoparticles and Capping with Thiolated Organic Linker
Nobel metal nanoparticles (NPs) such as Au and Ag have gained great attention in the past decades due to their fundamental optical properties. Based on that interest, the current work is focused for the synthesis [...]
The morphology and properties of silica nanoparticles synthesized by sol-gel reaction in elastomer matrix
In our studies the influence of different dispersing agents on the synthesis and character of silica particles prepared by a sol-gel reaction was investigated. The silica with different surface morphology was synthesized from tetraethoxysilane (TEOS) [...]
Novel optical property of Ag@PPy nanoparticles
we reported the characterization of the luminescenct properties of Ag@PPy nanoparticles, provided an explanation for the observed spectral shift in terms of the energy levels and exploited the Ag@PPy nanoparticles with doping-dependent emission peak shift [...]
Tuning the Gas Pressure Discharge of Nanoenergetic materials by Boron and Carbon Nanotube Additives
Thermite reactions are highly exothermic and may rapidly release high amount of stored chemical energy in the form of heat, light and wave. Nanothermite formulations that use aluminum or magnesium as the reducing agent and [...]
Synthesis, Characterization and Sampling of GaP Nanoparticles for Light Emissive Devices
Pyshkin S.L., Ballato J., Belevschii S., Rusu E., Racu A., Van DerVeer D., Academy of Sciences of Moldova, MD
This work reviews our recent efforts to advance quality of GaP nanoparticles in framework of the current US/Italy/France/Romania/Moldova project sponsored by the US Government. These quality GaP nanoparticles were synthesized for application in advanced light [...]
Bimodal size distributed silver nanoparticles on copper substrate: in situ heat treating under air and protective atmospheres
Ag nano-suspension was prepared by a wet synthetic route. The liquid phase consisted of an organic solvent and the particles had a bimodal distribution with a very narrow size distribution (compare Figure 1). The surface [...]
Application of zinc and magnesium oxides nanoparticles in crosslinking of carboxylated butadiene-acrylonitrile rubber
The aim of this work was to study the activity of several nanosized zinc and magnesium oxides in the crosslinking of carboxylated nitrile elastomer XNBR. The influence of the specific surface area, particle size and [...]
Optical Properties of Ternary Alloyed Cd1-xZnxSe Semiconductor Nanocrystals
In order to obtain high quantum yield (QY) nanocrystals and simplify the preparation procedure, one-pot synthetic method is conducted to prepare ternary alloyed nanocrystals. Ternary alloyed Cd1-xZnxSe (x=0, 0.2, 0.5, 0.8 and 1) semiconductor nanocrystals [...]
Enhancement in photoluminescence emission in the UV-visible region from chemically synthesized silver doped ZnS nanoparticles
Nanoparticles of ZnS:Ag doped with Ag+ (0.5%) and capped with polyvinyl pyrolidone (PVP) have been synthesized by chemical co-precipitation method. The measured particle size is ~2.5 nm which has been obtained from the analyses of [...]
Inverter Circuits Based on Low-Temperature Solution-Processed ZnO Nanoparticle Thin-Film Transistors
Promising enhancement-load inverter cuircuits using bottom-gated ZnO nanoparticle thin-film transistors and a poly(4-vinylphenol) (PVP) dielectric are demonstrated. The deposition of the ZnO active layer is done by spin coating of a colloidal dispersion. Due to [...]
Color tunable nanophosphors
In this study, yttrium oxide nanophosphors doped with Tb and Eu ions were made by flame aerosol technology. The emission color of these nanophosphors could be precisely tuned from green to red by tuning the [...]
Monitoring of glass transition at a polymer surface by localized surface plasmon resonance
The temperature below which a polymer is in glassy state and above which is in viscous state is called the glass transition temperature (Tg). Investigations on polymer surfaces by various groups revealed that the surface [...]
Self-assembled fluorescent magnetic nanoprobes for multimode-biomedical imaging
We fabricated multimode nanoprobes for acquisition of biological information at different object levels, i.e., in vivo detection and ex vivo validation for characterizing tumor angiogenesis. Fluorescent magnetic nanoprobes (FMNPs) were synthesized by using amphiphilic pyrenyl [...]
Europium-doped gadolinium sulfide nanoparticles as a multimodal imaging agents for bio-application
Most of the magnetic nanoparticles based on iron oxides have been widely used experimentally for numerous in vivo applications such as magnetic resonance imaging (MRI) contrast enhancement, tissue repair, hyperthermia, medical diagnostics, and therapeutics. These [...]
Hydrothermal approach to a carbon graphite encapsulated FeCo nanocrystals for diagnosis, hyperthermia therapy and siRNA delivery
Park J.K., Jung J.J., Subramaniam P., Shah B., Kim C.J., Lee J-K, Lee K.B., Lee J-K, Lee K.B., Korea Research Institute of Chemical Technology, KR
An effective therapeutic approach against cancer requires the combination of several modalities such as chemotherapy, radiation, and hyperthermia. However, the development of multifunctional nanomaterial-based systems that can provide the combined therapeutics and molecular imaging with [...]
Biological synthesis of copper nanoparticles using plant extract
Lee G., Lee H.J., Lee G., Lee H.J., Jang N.R., Yun J.H., Song J.Y., Kim B.S., Chungbuk National University, KR
Copper nanoparticles were biologically synthesized using plant leaf extract as reducing agent. On treatment of aqueous solutions of CuSO4•5H2O with leaf extract (Magnolia), stable copper nanoparticles were formed. UV-vis spectroscopy was used to monitor the [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2011: Advanced Materials, CNTs, Particles, Films and Composites
Published: June 13, 2011
Industry sector: Advanced Materials & Manufacturing
Topic: Nanoparticle Synthesis & Applications
ISBN: 978-1-4398-7142-3