Papers:
Hermetically-Coated Superparamagnetic Fe2O3 Particles with SiO2 Nanofilms
Teleki A., Suter M., Kidambi P.R., Ergeneman O., Krumeich F., Nelson B.J., Pratsinis S.E., ETH Zürich, CH
Magnetic nanoparticles are frequently coated with SiO2 to improve their functionality and bio-compatibility in a range of biomedical and polymer nanocomposite applications. In this paper, a scalable flame aerosol technology is used to produce highly [...]
Flame Spray Pyrolysis for the Production of Nanoparticles
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 [...]
Novel Flame-Gradient Method for Synthesis of Metal Oxide Nanomaterials
Various transition metal oxide nanostructures are synthesized using a novel probe-flame gradient method. An opposed flow flame of methane and oxygen enriched air provides a hightemperature reacting environment forming various structures directly on the surface [...]
Novel Nanostructures for Solid State Alcohol Breath Analyzers
Solid state alcohol breath analyzers are commonly used by the law enforcement authorities, due to high sensitivity toward ethanol, their portability and fair response and recovery times. Common materials for the synthesis of the sensitive [...]
Fabrication of Bismuth Trioxide Nanoparticles for Gas-Generators Application
Nanoenergetic materials release significant amount of energy at a higher rate and have a potential for various military applications. These systems lead to a fast propagation of a reaction front through the solid reactant mixtures. [...]
Safe nanotextiles from a life cycle perspective
The industry aims at taking advantage of the opportunities of new nanomaterials while producing safe products. A dose-effect relationship of the engineered nanoparticles is not clearly established yet. From this viewpoint, the product is only [...]
Network Aggregation of CNT at the Surface of Epoxy/MWCNT Composite Exposed to UV Radiation
CNTs are increasingly incorporated in polymers to enhance their mechanical and other properties. However, organic polymers are prone to degrade under UV radiation. Therefore, CNTs in a polymer nanocomposite will eventually be released into the [...]
Degradation and Nanoparticle Release of Epoxy/Nanosilica Composites Exposed to Solar UV Radiation
Nanoparticles are increasingly incorporated in polymers to enhance multifunctional properties. However, polymers are prone to undergo photodegradation under UV exposure, resulting in a liberation of nanoparticles from the polymer nanocomposites during their life cycle. The [...]
Measurement of nanofiller removal by abrasion
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 [...]
Colored nanoparticles:composition and application to protein fibres and hair
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), [...]
Flame Synthesis and Coating of Nanostructured Particles in One Step
Coating of flame-made nanostructured particles has been achieved in one step by a scalable aerosol process. Rutile TiO2 particles made by flame spray pyrolysis (FSP) were coated in a single step with SiO2 layers in [...]
Effect of Rare Earth Doping on Magnetic Properties of Cobalt Ferrite Nanocrystals
Cobalt ferrite (CoFe2O4) is a highly anisotropic magnetic material due to the magnetocrystalline anisotropy contribution from Co2+. The addition of foreign cations of different oxidation states, substituting Co2+ or Fe3+, can lead to an atomic [...]
Synthesis and Characterization of Co-Zn Ferrite Nanocrystals for Magnetocaloric Applications
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 [...]
Synthesis of Dy2O3 nanocrystalline powder using Acrylamide assisted combustion route
Nanocrystalline Dy2O3 powder was synthesized using arrylamde assisted combustion process. The prepared nano crystalline Dy2O3 powder was characterized through XRD, FTIR and SEM-EDX elemental mapping measurements.
Preparation of Carbon Coated lithium manganese phosphate nano rods by modified polyol process
Preparation of Carbon Coated lithium manganese phosphate nano rods by modified polyol process. Ramesh Kumar. Pa, M. Venkateswarlub, N. Satyanarayanaa* a Department of Physics, Pondicherry University, Puducherry - 605 014, India. b HBL Power systems [...]
Synthesis of Nanocrystalline ZrO2 Powder by the Polyol Route
Vivekanandhan S., Venkateswarlu M., Rawls H.R., Satyanarayana N., Univ. Texas Health Science Center at San Antonio, US
Recently, it was observed that nanostructured zirconium oxide, ZrO2, powder exhibits enhanced performance in many applications. We report the polyol route for the synthesis of nanocrystalline ZrO2 powder, and its characterization by TG/DTA, FTIR, XRD [...]
Nanocrystalline NiFe2O4 particles synthesized by citrate – Urea assisted combustion process
Prakash I., Nallamuthu N., Muralidharan P., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN
Lithium-ion batteries are most widely used in high quality electronic devices because of their high energy density, high voltage and long cycle-life. Current research in this pointed towards the development of new electrode and electrolyte [...]
Composition- and Size-Controlled Synthesis of Mn-Zn Ferrite Nanocrystals for Potential Magnetocaloric Applications
The use of ferromagnetic fluid for cooling applications where the fluid can be pumped with no moving mechanical parts, using the magnetocaloric effect, can be a great advantage for many applications where maintenance or power [...]
The Morphology and Evolution of Zinc Oxide Flowers Like by Direct Synthesis and Sequential Nucleation Growth
The morphology evolution characteristics of ZnO nanostructures were systematically studied from dense rods to ZnO flowers like. The ZnO flowers like were prepared by direct decomposition of a Zn(OH)42– precursor. Zinc oxide with a diversity [...]
Current Development Studies of a Single-Walled Carbon Nanotube Reference Material At National Institute of Standards and Technology (NIST)
Carbon nanotubes are promising candidates for numerous applications because of very unique nanostructures and possess remarkable mechanical and electronic properties. For this reason there is an urgent need for standards for carbon nanotube (CNT) manufacturers, [...]
Synthesis of monodispersed MFe2O4 (M=Fe, Co, Ni) ferrite nanoparticles: effect of reaction temperature on particle size
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 [...]
Application of Magnetite nanoparticles (Fe3O4) as an optimizing agent for Bradyrhizobium japanicum Growing Rate (BGR)
The aim of this study was to investigate, whether magnetic nanoparticles effect increasing of Bradyrhizobium Growing Rate in liquid media, and so alters sensitivity to high pH and survival.Finally results showed that using of the [...]
Silica-coated Ag nanoparticles by scalable flame technology
Silica coated silver nanoparticles have been synthesized in one step, by using flame spray pyrolysis. By controlling the production parameters, different sizes and different coating thicknesses were achieved. The particles were characterized with TEM/STEM, EDX [...]
Preparation, Characterisation and Electrical Conductivity studies of
Oxide ion conducting materials are attracting more due to their application in various fields like solid oxide fuel cells, oxygen sensors, oxygen pumps, etc. Doped Scheelite type materials are one of the better oxide ion [...]
Exposure modeling of engineered nanoparticle
Som C., Mueller N.C., Sonderer T., Gottschalk F., Scholz R., Nowack B., Empa Materials Science and Technology, CH
An elementary step towards a quantitative assessment of the risks of new compounds to the environment is to calculate their predicted environmental concentrations (PEC). The aim of this study was to use a life-cycle perspective [...]
Quantum Dot (QD) gate Si-FET with Self Assembled GeOX Cladded Germanium Quantum Dots
This paper presents preliminary data on the transfer and output characteristics of a GeOXcladded Ge quantum dot (QD) gate Si MOSFET. The MOSFET is formed by depositing cladded QDs above the SiO2 gate insulator formed [...]
Nickel ferrite Nanomaterials by Pulsed laser ablation in Water; Structural, Optical and Magnetic Characterizations
Nickel ferrite nanoparticles are synthesized by pulsed laser ablation of corresponding bulk target in the double distilled water. Focused output of fundamental and third harmonics from pulsed Nd:YAG laser operating at 40 and 25 mJ/pulse [...]
Preparation and Characterization of Polyimide-Cobalt Ferrite Nanocomposite
Synthesized 20 nm cobalt ferrite single crystals, which exhibited a coercivity of 2.9kOe at room-temperature, were dispersed in precursor polyamic acid at different volume fractions and cured at 300oC to develop the polyimide matrix. Polyamic [...]
Effect of Particle Morphology and Content on the Properties of Palladium/Polycarbonate Nanocomposites
Influence of Pd particle size and Pd content on the properties of the Pd/PC nanocomposites was investigated. Nanocomposites with varying Pd content were synthesized via the ex situ and in situ methods. Discrete Pd nanoparticles [...]
Impedance of Nanoparticles Embedded Electrospun Nanofiber
Electrospinning produces nanofibers with diameters ranging from 100-500 nm under 10-20 KV at 10-20 cm distances, and if these nanofibers were composed of polymers like PVA or PVP, they are usually nonconductive with resistances too [...]
Control of Nanoparticle on Nanofiber via Magnetic Electrospinning
Nanoparticles added into nanofibers produced by electrospinning can expand the functions of such fibers, and these nanoparticles can serve as vehicle for drugs in active drug delivery concept. Depending on the toxicity of these nanoparticles, [...]
Synthesis and Characterization of Silver Nanoparticle Rings Embedded in Glass
Chen Y., Jaakola J., Ge Y., Säynätjoki A., Tervonen A., Hannula S-P, Honkanen S., Helsinki University of Technology, FI
Ion exchange technique with photolithography-patterned metal mask is used to form silver nanoparticle patterns embedded in glass. Optical transmission measurement is performed to characterize the optical properties of silver nanoparticles. Atomic force microscopy (AFM) of [...]
Formation of Ni/NiO core/shell nanostructures and their attachment on carbon nanotubes
We report a facile wet synthesis method coupled with microwave irradiation to successfully control the morphology of Ni/NiO core/shell nanoparticles. Furthermore, we report for the first time, microwave-based synthesis of hollow NiO nanostructures from Ni [...]
DC and AC dielectric properties transformer oil based magnetic fluid
Timko M., Kopcansky P., Tomco L., Marton K., Koneracka M., Herchl F., Tomasovicova N., Institute of Exprimental Physics SAS, SK
The comparison of the AC-dielectric breakdown strength of transformer oil based magnetic fluid with pure transformer oil confirmed better insulating properties of magnetic fluid in external magnetic field. The better heat transfer properties provided by [...]
Liquid crystals doped by magnetic nanoparticles
Kopcansky P., Tomasovicova N., Koneracka M., Zavisova V., Timko M., Tomco L., Dzarova A., Eber N., Fodor-Csorba K., Toth-Katona T., Vajda A., Jadzyn J., Institute of Exprimental Physics SAS, SK
The aim of this study was to investigate how the shape of magnetic particles dispersed in the liquid crystal influences the critical magnetic field of structural changes. The experiment showed parallel initial orientation between liquid [...]
Effect of Silica Nanoparticles on Rheological Properties and Gelation Temperature of Biodegradable Polymer Gels
The discovery of new potent and insoluble drugs has emphasized the need for personalized dosages and novel drug-delivery systems. The use of biodegradable polymers is a good alternative to form films in which a solid [...]
Synthesis of novel ferrite foam materials for water-splitting application
Globally increasing energy demands with reduced emission of greenhouse gases require the use of more sustainable energy sources. One of the technically viable sustainable energy technologies is based on the thermochemical water-splitting process utilizing redox [...]
Biofunctionalization of laser-ablated gold nanoparticles
Riabinina D., Zhang J., Zhang T., Zhang J., Zhang T., Chaker M., Ma D., Tijssen P., Universite du Quebec, CA
For the first time, we investigated the biofunctional activity of gold nanoparticles prepared by nanosecond pulsed laser ablation in liquid media. This method allows the fabrication of gold nanoparticles surrounded by a metastable gold oxide [...]
SAPHIR – EUROPEAN PROJECT – Safe, integrated and controlled production of high-tech multifunctional materials and their recycling
The development of nanotechnologies appears to be a real innovative solution in order to improve existing technologies and create new products of the future. However, at the present time, the manufacture of nanostructured products is [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics
Published: May 3, 2009
Industry sector: Advanced Materials & Manufacturing
Topic: Nanoparticle Synthesis & Applications
ISBN: 978-1-4398-1782-7