Materials Literature
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Continuum Solid Mechanics at Nano-Scale: How Small Can It Go? Nanotechnologies and nanomaterials are arguably the most actively and extensively developing research areas at the beginning of this century. The number of publications in scientific periodicals and conference proceedings, fully or partially devoted to nano…
Heavily oxidized porous silicon treated by high-pressure water vapor annealing exhibits a strong blue light emission band which includes a long-lived phosphorescence (Ph) component. This Ph is particularly strong below 200 K. Above 200 K, it experiences a progressive thermally activated quenching. The intensity of the…
Accurate prediction of steam volume fraction and of the boiling crisis (either DNB or dryout) occurrence is a key safety-relevant issue. Decades of experience have been built up both in experimental investigation and code development and qualification; however, there is still a large margin to improve and refine the m…
In this work, we are interesting in the measurement of thermal conductivity (on the surface and in-depth) of Porous silicon by the micro-Raman spectroscopy. This direct method (micro-Raman spectroscopy) enabled us to develop a systematic means of investigation of the morphology and the thermal conductivity of Porous s…
Recently, some authors have considered thermodynamics of DNA and obtained its entropy.In parallel, they have shown that phonons which are agents of temperature and entropy have direct effects on the electrons.Motivated by these researches, we obtain the relation between entropy and electronic properties of DNA like it…
Sintering kinetics and densification behavior of pure ThO2 have been studied using high temperature dilatometer experiments at constant rate of heating. Sintering activation energy has been determined by Wang and Raj method. Master sintering curve (MSC) for densification is a functional sintering model that describes…
In this paper, a new computation model of shielding efiectiveness (SE) is proposed in order to calculate the SE of blended electromagnetic shielding fabric (BESF) by some structural parameters. Some computation equations of the SE for the BESF are given according to the theoretical deduction and previous experimental…
Using a nanoporous alumina template, we prepared an isotactic polystyrene/poly(2,6-dimethylphenylene oxide) (iPS/PPO) nanorod blend with gradient composition and gradient crystallinity. The crystallinity, orientation and composition of the polymer in the nanorods were investigated by micro-FTIR spectroscopy. Although…
We report the synthesis of vertically oriented, long-range ordered hexagonal mesoporous zirconia thin films. The orientation of hexagonally ordered cylindrical mesopores in thin films was effectively controlled by taking advantage of the temperature dependent hydrophobicity of the templating block copolymer PEO–PPO–PE…
Ellipsometry and mechanically assisted sodium dodecyl sulphate elution was utilized to study the adsorption of human serum albumin (HSA), human immunoglobulin G (IgG), and laminin-1, as well as competitive adsorption from a mixture of these proteins on spin-coated and sintered hydroxyapatite (HA) surfaces, respectivel…
Elaborate design of energy transfer systems in luminescent nanocrystals revealed tremendous advantages in nanotechnology, especially in biosensing and drug delivery systems. Recently, upconversion nanoparticles have been discussed as promising probes as labels in biological assays and imaging. This article reviews the…
Barium carbonate (BaCO3) crystals with unique hierarchical superstructures have been fabricated through a facile and controlled solution self-assembly mode in the presence of a tri-block copolymer PEO70–PPO20–PEO70 (P123). The powder X-ray diffraction (XRD) results revealed that the obtained BaCO3 product was indexed…
Opportunity for DNA Detection using Nanoparticle-Decorated Graphene Oxide Graphene is a monolayer sheet of carbon atoms packed into a twodimensional (2D) honeycomb lattice. In principle, graphene has been studied for sixty years and widely used for describing properties of various carbon-based materials. However, only…
Several prostheses are available to replace degenerative diseased aortic valves with unique advantages and disadvantages. Bioprotheses show excellent hemodynamic behavior and low risk of thromboembolic complications, but are limited by tissue deterioration. Mechanical heart valves have extended durability, but permane…
Characteristics of re∞ected power from a planar interface of chiral and/or chiral nihility media have been investigated theoretically. Focus of the study is tunneling and rejection of power associated with these interfaces. Efiect of polarization of incidence fleld and parametric dependence on re∞ected power have been…
An artificial neural network (ANN) was developed to predict the thermal resistance of knit fabrics. Thickness, porosity, air permeability, weight per unit area, and fiber conductivity were taken as input variables of the ANN. Data on thermal resistance were measured on experiments carried out on jersey knitted structu…
The effects of carbon nanotube (CNT) chirality, Stone–Wales (SW) defects and defect orientation on the radial collapse and elasticity of single-walled CNTs (SWNTs) were investigated using molecular mechanics and molecular dynamics (MD) simulations. It is found that the collapse pressure (Pc) of the armchair SWNT is 13…
We developed a technique to form a bioabsorbable synthetic polymer (polyglycolic acid, PGA) combined with a natural polymer (fibrin) to serve as a scaffold to help retain seeded cells and improve the seeding efficiency of chondrocytes in an implantable construct. This approach was evaluated in a canine autologous impl…
We report on the optical properties of fabricated nanohybrid structures containing Au nanorods and functionalized single‐walled carbon nanotubes in aqueous solutions. In particular, the absorption spectra of these hybrid materials are studied as a function of the concentration of the functionalized single‐walled carbo…
Charge carrier transport associated with silicon nanocrystals (Si NCs) can be improved by removing hydrocarbon chains that are routinely attached to the NC surface by means of hydrosilylation. Thermal annealing for the hydrocarbon-chain removal may lead to carbon-coated Si NCs. But the optical behavior of carbon-coate…