Controllable fabrication of nickel nanoparticle chains based on electrochemical corrosion
Ni nanoparticle chains are obtained by corroding Cu segments of Ni/Cu nanowires in alkali solution based on electrochemical corrosion.
Materials Literature
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Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid)
The use of mixtures of synthetic and natural polymers is a potential option to reduce the pollution by plastic waste. In this work, the method for the chemical modification of chitosan with poly(lactic acid) was developed; then, the preparation of films of blends of polyethylene and chitosan-poly(lactic acid) produced…
The DC inclined-plane tracking and erosion test and the role of inorganic fillers in silicone rubber for DC insulation
The first polymer insulator for AC transmission lines was developed in the late 1950s. This insulator consisted of a flexibilized epoxy resin weathershed cast onto a fiberglass rod, and field trials on a 138-kV line took place in 1959. Insulators failed almost immediately on energization due to severe tracking and ero…
Complex Columnar Hexagonal Polymorphism in Supramolecular Assemblies of a Semifluorinated Electron-Accepting Naphthalene Bisimide
Simple synthetic methods for a strongly electron-accepting naphthalene bisimide (NBI) derivative functionalized with a new environmentally friendly chiral racemic semifluorinated alkyl group and with AB3 minidendrons containing the same semifluorinated group are reported. The semifluorinated dendron was attached to th…
Atomic Layer Deposition Encapsulated Activated Carbon Electrodes for High Voltage Stable Supercapacitors
Operating voltage enhancement is an effective route for high energy density supercapacitors. Unfortunately, widely used activated carbon electrode generally suffers from poor electrochemical stability over 2.5 V. Here we present atomic layer deposition (ALD) encapsulation of activated carbons for high voltage stable s…
Flexural behavior of carbon and glass fiber composite laminates reinforced with Nylon 6,6 electrospun nanofibers
Nylon 6,6 nanofibers manufactured by means of electrospinning have been used to interleave Mode II fracture mechanics glass and carbon unidirectional fiber composite specimens. The aim of this work was to study the effect of the nanofibers materials in their ability to reinforce the interleave. Experimental testing wa…
Extracellular Synthesis of Silver Nanoparticles by Aspergillus terreus: Biosynthesis, Characterization and Biological Activity
The development of fast, cost-effective, and “eco-friendly” method for the production of silver nanoparticles is an important aspect of nanotechnology today. In this paper, ten fungal strains isolated from marine sediment in Mediterranean Sea (Alexanderia) were screened for their abilities to synthesis silver nanopart…
Evaluation of Gellan Gum Film Containing Virgin Coconut Oil for Transparent Dressing Materials
We examined the potential of virgin coconut oil (VCO) incorporated in gellan gum (GG) films as a dressing material. Pure GG film is extremely brittle and inclusion of 0.3% (w/w) VCO in the GG film (GG-VCO3) improved the toughness (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>T</mml:mi><mml:…
First-Principles Analysis of Structure Sensitivity in NO Oxidation on Pt
The kinetics of Pt-catalyzed NO oxidation on both Pt(111) and Pt(321) are quantified from first-principles using a coverage-aware “reaction site” kinetic model. Density functional theory (DFT)-parametrized cluster expansions are used to predict oxygen coverages and availability of O 2 dissociation sites as a function…
Composite nanoplatelets combining soft-magnetic iron oxide with hard-magnetic barium hexaferrite
By coupling two different magnetic materials inside a single composite nanoparticle, the shape of the magnetic hysteresis can be engineered to meet the requirements of specific applications. Sandwich-like composite nanoparticles composed of a hard-magnetic Ba-hexaferrite (BaFe12O19) platelet core in between two soft-m…
Planktonic and biofilm-grown nitrogen-cycling bacteria exhibit different susceptibilities to copper nanoparticles
Proper characterization of nanoparticle (NP) interactions with environmentally relevant bacteria under representative conditions is necessary to enable their sustainable manufacture, use, and disposal. Previous nanotoxicology research based on planktonic growth has not adequately explored biofilms, which serve as the…
Laser flash-Raman spectroscopy method for the measurement of the thermal properties of micro/nano wires
This paper introduces a new method for measuring the thermal diffusivity and thermal conductivity of individual micro/nano wires using Raman spectroscopy. This method uses a focused short pulsed laser and a continuous-wave laser in a Raman spectroscopy system as the local heater, Raman signal excitation source, and te…
Contact Angle Distribution of Particles at Fluid Interfaces
Recent measurements have implied a distribution of interfacially adsorbed particles' contact angles; however, it has been impossible to measure statistically significant numbers for these contact angles noninvasively in situ. Using a new microscopy method that allows nanometer-scale resolution of particle's 3D positio…
Mechanism and Enhanced Yield of Carbon Nanotube Growth on Stainless Steel by Oxygen-Induced Surface Reconstruction
It is well-known that carbon nanotubes (CNTs) can be grown directly on the surface of stainless steel (SS) alloys, because the native composition of SS contains elements that seed CNT growth upon hydrocarbon exposure at elevated temperature. Often such methods use acid immersion or oxidation in air to treat the surfac…
Eco-friendly and green synthesis of silver nanoparticles using leaf extract of Strychnos potatorum Linn.F. and their bactericidal activities
Inspired green synthesis of metallic nanoparticles is evolving as an important branch of nanotechnology. Traditionally these are manufactured by wet chemical methods which require toxic and flammable chemicals. We report for the first time an economic and eco-friendly green synthesis of silver nanoparticles using Stry…
Recent advances in the role of supramolecular hydrogels in drug delivery
INTRODUCTION: Supramolecular hydrogels, formed by noncovalent crosslinking of polymeric chains in water, constitute an interesting class of materials that can be developed specifically for drug delivery and biomedical applications. The biocompatibility, stimuli responsiveness to various external factors, and powerful…
Study of Bacterial Adhesion on Biomimetic Temperature Responsive Glycopolymer Surfaces
Pseudomonas aeruginosa is an opportunistic pathogen responsible for diseases such as bacteremia, chronic lung infection, and acute ulcerative keratitis. P. aeruginosa induced diseases can be fatal as the exotoxins and endotoxins released by the bacterium continue to damage host tissues even after the administration of…
Optical properties of SiO 2 @M (M = Au, Pd, Pt) core–shell nanoparticles: material dependence and damping mechanisms
Optical properties of SiO2@M (M = Au, Pd, Pt) NPs are investigated. Both the plasmon hybridization effect and the retardation effect influence the plasmon band position, causing an initial blue shift, and then a red shift, with the increase of shell thickness.
Plasmon-Induced Efficiency Enhancement on Dye-Sensitized Solar Cell by a 3D TNW-AuNP Layer
A new 3D TNW-AuNP plasmonic electrode consists of antireflective (AR) TiO2 nanowires (TNWs) (∼600 nm thickness) serving as light-harvesting antennae coupling with Au nanoparticles (NPs). A huge red-shift of 55 nm is observed in surface plasmon spectra for the Au (11 nm) plasmonic electrode that has 11 nm size Au NPs,…
Particle Stabilized Aqueous Foams at Different Length Scales: Synergy between Silica Particles and Alkylamines
Nanoparticles can be efficient foaming agents. Yet, the detailed mechanisms of foam stabilization by these particles remain unclear. In most cases, the foamability and foam stability of a system have to be determined empirically. We used a multiscale approach to reveal how the microscopic properties of the nanoparticl…