Papers:
Silicon and Germanium Nanocrystal Thin Films Prepared Using Innovative Nonaqueous Electrophoretic Deposition
As cost effective synthetic routes for producing large quantities of high purity size-specific nanoparticles become fully realized, the next challenge lies in fabricating devices that utilize the unique size-dependent optoelectronic properties inherent in quantum dot [...]
Nano-structured Organically Modified Silica Thin Films for Functional Surfaces
Organically modified silica (ormosil) nano-composites are unique materials that offer best of the both of organic polymers and inorganics, like mechanical flexibility together with good chemical durability [1]. Nano-porosity adds these hybrid materials extra-functionality (e.g., [...]
Impact of Temperature and Humidity on Superhydrophobicity of Polyurethane/Organoclay Nanocomposites
Recent preliminary investigations show that superhydrophobic coatings have the capability to reduce both ice accumulation and adhesion on a surface. Although there are recent studies of anti-icing superhydrophobic surfaces, the authors are not aware of [...]
Selective Separation of Oil from Water via Superhydrophobic Magnetic Foams
Fragouli D., Bayer I., Bertoni G., Calcagnile P., Anyfantis G.C., Cingolani R., Athanassiou A., Italian Institute of Technology, IT
We demonstrate an inexpensive and very facile technique, of forming magneticaly actuated superhydrophobic/superoleophilic foams. Specifically, a simple commercial polyurethane foam is used as a substrate on which a small amount of toluene solution containing colloidal [...]
Coatings of Polymers with TiO2 Nanoparticles by Sonochemical Method
The TiO2 films due to their photocatalytic properties are widely used for coating of polymers to impart them with the self cleaning properties. Although the titania films were thoroughly studied earlier the development of simple [...]
Rendering superhydrophobic laser-induced rough surfaces by transfering on them Teflon nanoparticles
In this work we demonstrate the possibility to alter the wettability properties of silicon/SiO2 surfaces, by UV nanosecond pulsed laser irradiation, to render them initially superhydrophilic. By varying the laser fluence, it is possible to [...]
Adhesion strength and superhydrophobicity in polyurethane/organoclay nanocomposites
Polyurethane coatings are used on many different materials and in a wide variety of applications due to its high durability and adaptable chemical composition. Although there are a number of reports on the fabrication of [...]
Super-Hydrophobic Nano-Composite Films
An improved super-hydrophobic nano-composite film protects cell phones and other portable electronics from accidental exposure to water or other liquids. The printed circuit boards, the connectors and the batteries are coated. Perfect electrical contact is [...]
Nano-Scale Surface Coatings
P2i has a commercial, patented process that applies functional nano-coatings onto the surfaces of products made from a range of materials. One successful functional property is water and oil resistance. The treatment effectively lowers the [...]
Graphene Nanoplatelet Membranes for Aerospace Applications
Graphene nanoplatelets (GNP), conceptually described as unrolled carbon nanotubes, exhibit attractive properties including the highest thermal conductivity known and twice the surface area of carbon nanotubes. By blending with a minimal ratio of carbon nanotubes [...]
Biocompatible Nanomembranes based on PEGylation of Cross-Linked Self-Assembled Monolayers
We present a novel ultrathin and biocompatible membrane based on highly cross-linked and subsequently PEGylated self- assembled monolayers. These layers can be removed from their substrates and freely suspended over TEM grids. Possible applications of [...]
Electrodeposition of Rhenium-Tin Nanowires
Rhenium (Re) is a refractory metal which exhibits an extraordinary combination of properties. Thus, nanowires and other nanostructures of Re-alloys may possess unique properties resulting from both Re chemistry and the nanometer scale, and become [...]
On-demand release of corrosion-inhibiting molecules from layerd double hydroxide film formed on magnesium alloy
Ishizaki T., Teshima K., Saito N., National Institute of Advanced Industrial Science and Technology (AIST), JP
Magnesium is one of the lightest engineering materials. Thus, it is expected that magnesium and its alloys are applied to aerospace, aircraft, automobile, and railway. However, they have a defect which is extremely low corrosion [...]
A comparative study over the photocatalytic activity of nanostructured TiO2 layers for air purifiers
The research presents an investigation over the efficiency of nanostructured TiO2 films as photocatalysts either in air purification systems or to be integrated in light devices, based on the exploitation of UV or Vis irradiation [...]
Upconverting Nanophosphors for High Temperature Sensing Applications
Guo X., Zhao H., Song H., Chen Q., Li K.K., Zou Y.K., Jiang H., Combs C., Narayanaswamy V., Clemens N., Boston Applied Technologies, Inc., US
In this work, a unique upconverting thermographic phosphor technique was developed for overcoming the difficulties encountered currently in the down-conversion route. Upconverting nanopowders of rare earths doped refractory oxides were synthesized through a wet chemical [...]
Stable Superhydrophobic TiO2-based Nanobelt Films with Controllable Transparence and Adhesion
Laiand Y.K., Gong D.G., Gong J.J., Tang Y.X., Gong D.G., Gong J.J., Lin C.J., Chen Z., Xiamen University, CN
Therefore, it is a challenge to develop more convenient methods to quickly deposit titanate nanostructured powder on various substrates to construct superhydrophobic films. In this work, stable TiO2-based nanobelt/fluoroalkylsilane (TNB/FAS) hybrid solution were synthesized by [...]
Cell adhesion behaviors on polyethylene terephthalate surface modified by surface-wave plasma-initiated graft polymerization
Nina A., Ishizaki T., Saito N., National Institute of Advanced Industrial Science and Technology (AIST), JP
For better performance in biomedical applications, the PET surface still needs to be improved by functionalization, particularly controlling the hydrophilicity. In order to impart hydrophilicity to the PET surface, we tried to introduce acrylic acid [...]
Nanoscale tailoring of the surface properties of biomedical devices by layer-by-layer technique
Chiono V., Carmagnola I., Boccafoschi F., Gentile P., Tonda-Turo C., Del Pilar Camacho Leal M., Ballarini M., Ciardelli G., Politecnico di Torino, IT
The layer-by-layer (LbL) technique is a versatile solvent-free process allowing the coating of surfaces with uniform ultrathin multilayered films to tailor surface properties and structure at the nanoscale. LbL approach is a promising tool to [...]
Synthesis and Characterization of Poly(urethane-imide)-POSS nanocomposites
A series of Poly(imide-urethane)-POSS membranes were synthesized through the condensation reaction of anhydride terminated prepoly(imide) (API) and isocyanate terminated prepoly(urethane)POSS (IPU) by varying the amount of API and IPU . The API was synthesized by [...]
Broadband infrared reflecting thin films inspired by quasi-ordered photonic structures in squid tissue
We present a novel synthetic approach to replicating the optical properties of quasi-ordered photonic structures in the silver-colored tissue in Loliginid squid. The squid system exhibits broadband reflectance in the visible spectrum. Rod-like polystyrene particles, [...]
Fabrication of the Two-Dimensional Nanostructure on Dye-Doped Polymer Film by Multiple Holographic Recording
we demonstrate that the 2D-SRGs structures can be fabricated easier and faster by using pulsed laser with two-stage instantaneous writing. The structures of 2D-SRGs fabricated with the interface of nematic liquid crystals become more perfect [...]
White-Light Emission Characteristics of Nanoporous Silicon Membrane by Post-Treatment of Supercritical Fluid Technology
Nanoporous silicon (NPS) membrane with white-light emission property, including red, green and blue (RGB) colors by using the glucose post-treatment of supercritical fluid technology (SCF) is originally proposed in this paper. The electrochemical anodization with [...]
Enhancement of the magneto-optical activity via surface plasmon resonance on Au-Co nanocomposite thin films
We find that the Au-Co nanocomposite thin films grown at 300 ºC, which exhibit segregate nano-cluster microstructure and smooth surface capable of SPP propagation, exhibit largest magneto-optical effects than the films grown at lower and [...]
Nanoporous Materials through Anodizing of Iron in F-containing Organic Electrolytes
Jagminas A., Mažeika K., Klimas V., State research institute Center of physical sciences and technology, LT
In this brief review, our recent progress in fabrication, characterization and application of thick nanoporous iron anodic films in ethylene glycol and a novel dimethyl sulfoxide (DMSO) electrolyte containing some fluorides will be presented and [...]
A novel strategy for fabrication of mesoporous crystalline tin dioxide films with large pores and fully crystalline walls
We have developed a new facile procedure for manufacturing crystalline thin films of tin oxide with a uniform mesoporous architecture and full crystallinity of the walls. The procedure is based on the evaporation-induced self-assembly of [...]
Simultaneous determination of guanine and adenine on nano-poly(4-aminothiophenol) patterns modified ITO electrode
Here, poly(4-aminothiophenol) nano-patterns modified ITO electrode was fabricated to investigate the electrochemical behavior of A and G individual as well as simultaneous detection of mixture of A and G. The results demonstrated that nano-poly(4-aminothiophenol)/ITO can [...]
Odd-Even Effect in Self Assembly and Phase Transition of Alkanethiols Monolayers (SAMs) on Au (111) Surfaces
Molecular dynamic simulations were conducted to predict the structural properties of n-alkanethiols CH3(CH2)n-1SH (n=4-22) self assembled monolayers (SAMs) on Au (111) surfaces. We studied the effects of chain length on the structural properties, including orientation [...]
Reinforcing Kevlar by Thin Outer Graphene Shell
The development of advanced method to reinforce Kevlar fibers by using 2D graphene structures is reported. This method is based on the ultrasonic-assisted swelling of the polymeric fiber in a graphene suspension with the use [...]
Charge Confinement in Silicon Nanowires by Surface Functionalization
Shih Y.-C., Lee J-H., Lin C-T, Chen C-S, Wu K.-C., National Center for High-performance Computing, TW
Silicon nanowires (SiNWs) are expected to play an important role in nanotechnology because they possess remarkable physical property and compatibility with current Si-based fabrication. They have been successfully used in advance applications such as biosensors, [...]
Photo Catalytic Activity of Coated PET Fabrics with Synthesised Nano TiO2 & ZnO: A Comparative Study
The coated PET fabric with atomic ratios of Ti/(Ti+Zn) of 100%, 75%, 50%, 25%, and 0% was successfully prepared via sol–gel process from directly mixing TiO2/ZnO sol. The scanning electron microscopy (SEM) observation, energy dispersive [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2011: Advanced Materials, CNTs, Particles, Films and Composites
Published: June 13, 2011
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Coatings, Surfaces & Membranes
ISBN: 978-1-4398-7142-3