Poly(ethyleneglycol)-Coated Nanospheres: Potential Carriers for Intravenous Drug Administration
'Poly(ethyleneglycol)-Coated Nanospheres: Potential Carriers for Intravenous Drug Administration' published in 'Protein Delivery'
Materials Literature
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B3LYP study of the dipole moment and the static dipole (hyper)polarizabilities of para‐nitroaniline in gas phase
Abstract The dipole moment μ and the electronic (hyper)polarizabilities α, β, and γ tensors of paranitroaniline (PNA) has been calculated in the static regime with the B3LYP hybrid approach of the density functional theory (DFT) formalism and by using the numerical triple finite field method of Kamada et al. The calcu…
Structural and free‐volume analysis for alkyl‐substituted palladium‐catalyzed poly(norbornene): A combined experimental and Monte Carlo investigation
Abstract Increasing the length of an alkyl side chain on a rigid polynorbornene (PNB) backbone is shown to decrease the glass‐transition temperature of the resultant polymer, decrease the density of the bulk polymer, decrease the number and average free‐volume element size present, and decrease the permeability of gas…
Electro-optics and structural peculiarities of liquid crystal–nanoparticle-polymer composites
The structural peculiarities and electro-optic performance of liquid crystal (LC)-colloidal nanoparticle (NP)-polymer (P) composites formed by photoinduced phase separation are considered. We classify these materials under two groups according to two limiting cases of polymer morphology. The first group corresponding…
A unifying treatise on variational principles for gradient and micromorphic continua
The effective macroscopic behaviour of most materials depends significantly on the structure exhibited at the microscopic level. In recent decades, considerable effort has thus been directed towards the development of continuum theories accounting for the inherent microstructure of materials. A unified theory is, howe…
Photovoltaic properties of (Pb,La)(Zr,Ti)O3 films with different crystallographic orientations
Photovoltaic (Pb,La)(Zr,Ti)O3 films in a layered structure of different crystallographic orientations are fabricated by an optimized metalorganic deposition method. Such films of (001) orientation exhibit a photovoltaic electrical power of approximately 20 times higher than that of random films. The anisotropic optica…
Elasticity of Solids with a Large Concentration of Point Defects
Abstract The elastic behavior of solids with a large concentration of interacting point defects has been analyzed. The analysis predicts that, in such solids, mechanical stress may be partially relieved by a shift in the association/dissociation equilibrium of the point defects. Association/dissociation of the point d…
A geometric framework for the kinematics of crystals with defects
Presented is a general theoretical framework capable of describing the finite deformation kinematics of several classes of defects prevalent in metallic crystals. Our treatment relies upon powerful tools from differential geometry, including linear connections and covariant differentiation, torsion, curvature and anho…
Hydrothermal synthesis of layered hydroxide zinc benzoate compounds and their exfoliation reactions
Layered hydroxide zinc benzoate compounds with structure of layered basic metal salt (LBMS) were prepared by a hydrothermal reaction in a temperature range of 110–180 °C. The structure, chemical composition, and exfoliation reaction in alcohol solvents of the layered compounds were investigated by using XRD, TG-DTA, S…
Bending of a Carbon Nanotube in Vacuum Using a Focused Ion Beam
A focused ion beam is used to plastically bend and straighten freestanding multiwalled carbon nanotubes held at the apex of a scanning force microscopy tip (see Figure). The nanotube aligns itself parallel to the beam direction so that its free end is directed toward the ion source. In this orientation, the nanotube i…
In vitro hemocompatibility of albumin–heparin multilayer coatings on polyethersulfone prepared by the layer‐by‐layer technique
Polyethersulfone foils (PES)--a unique material for blood purification membranes--were coated with a multilayer assembly of heparin (unfractionated or high anticoagulant activity fraction heparin) and albumin (albumin-heparin coatings), or with a multilayer of albumin (albumin coating), using the layer-by-layer techni…
Fe – Ga ∕ Pb ( Mg 1 ∕ 3 Nb 2 ∕ 3 ) O 3 – Pb Ti O 3 magnetoelectric laminate composites
We have found large magnetoelectric (ME) effects in long-type laminate composites of Fe–20%Ga magnetostrictive alloys and piezoelectric Pb(Mg1∕3Nb2∕3)O3–PbTiO3 single crystals. At lower frequencies, the ME voltage coefficient of a laminate with longitudinally magnetized and longitudinally polarized (i.e., L-L mode) la…
Direct Observation of Nanocrystallite Buckling in Carbon Fibers under Bending Load
Single carbon fibers are deformed in bending by forming loops with varying radius. Position-resolved x-ray diffraction patterns from the bent fibers are collected from the tension to the compression region with a synchrotron radiation nanobeam of 100 nm size from a waveguide structure. A strain redistribution with a s…
Properties of polystyrene and polymethyl methacrylate copolymers of polyhedral oligomeric silsesquioxanes: A molecular dynamics study
Abstract Molecular dynamics simulations were carried out on copolymers of both styrene and methyl methacrylate with polyhedral oligomeric silsesquioxane (POSS) derivatives to identify the origin of the property changes imparted upon the chemical incorporation of POSS. Simulations were carried out on these hybrid copol…
Conducting polymer and hydrogenated amorphous silicon hybrid solar cells
An organic-inorganic hybrid solar cell with a p-i-n stack structure has been investigated. The p-layer was a spin coated film of PEDOT:PSS [poly(3,4-ethylenedioxythiophene) poly (styrenesulfonate)]. The i-layer was hydrogenated amorphous silicon (a-Si:H), and the n-layer was microcrystalline silicon (μc-Si). The inorg…
Directed integration of ZnO nanobridge devices on a Si substrate
We demonstrate the directed assembly and integration of ZnO nanobridges into working devices on silicon-on-insulator substrates. The “pick and place” method of nanowire integration is avoided and metal catalysts are not used. ZnO nanowires (NWs) were grown selectively via a vapor-solid method using a patterned ZnO thi…
Structure–property relationship in chitosan‐based biopolymer/montmorillonite nanocomposites
Three kinds of chitosan-based biopolymer/montmorillonite (MMT) nanocomposites have been prepared by an exfoliation–adsorption method. The structure of MMT is tailored by the functional groups of the polymer matrix. Chitosan/MMT nanocomposites form intercalated-and-flocculated structures, whereas with the introduction…
Hole‐Doped Single‐Walled Carbon Nanotubes: Ornamenting with Gold Nanoparticles in Water
A simple and facile method has been developed that allows water-soluble hybrid materials of Au nanoparticles and hole-doped single-walled carbon nanotubes (SWNTs) to be prepared. Uniformly arranged Au nanoparticles (see TEM image) were obtained by the addition of metal salts to surfactant-suspended SWNTs in water usin…
Controlled Electrodissolution of Polyelectrolyte Multilayers: A Platform Technology Towards the Surface‐Initiated Delivery of Drugs
Abstract A novel method for the electrochemical dissolution of polyelectrolyte multilayers from the surface of an electrode for applications in controlled drug delivery is reported. Biodegradable and biocompatible multilayer films based on poly( L ‐lysine) and heparin have been selected as a model system, and have bee…
Atomistic formulation of a multiscale field theory for nano/micro solids
This paper aims to formulate a field theory for the solution of classical N-body problem. In this paper, multi-length and time scale material behaviour is addressed from the viewpoint of lattice dynamics. A multiscale field theory that can work as an alternative to molecular dynamics simulation in studying statistical…