Materials Literature
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This article reviews current efforts to make glucose sensors based on the inherent optical properties of single walled carbon nanotubes. The advantages of single walled carbon nanotubes over traditional organic and nanoparticle fluorophores for in vivo-sensing applications are discussed. Two recent glucose sensors mad…
Radar-absorbing structures having foam-based honeycomb sandwich structures (FBHSS) were fabricated through a conventional foaming technique. Conductive fillers such as carbonyl iron/nickel fibers (CINF) and magnetic metal micropowder (MMP) were added to polyurethane foams so as to efficiently increase the absorbing ca…
Styrene-butadiene rubber (SBR) has large applications in the shoe industry, especially as expanded sheets used to produce insoles and inner soles. According to TG analysis, the rubber content in SBR residues (SBR-r) was found to be around 26-wt%. Based on that data, a cost-effective technique for the reuse of SBR-r in…
The processes of excitation energy transfer in phosphors based on single-crystal Tb 3 Al 5 O 12 :Ce (TbAG:Ce) and Tb 3 Al 5 O 12 :Ce,Eu (TbAG:Ce,Eu) garnet films have been investigated. These films are considered to be promising materials for screens for X-ray images and luminescence converters of blue LED radiation.…
Enzymes and other biomolecules are often immobilized in a matrix to improve their stability or to improve their ability to be reused. Performing a polycondensation reaction in the presence of a biomolecule of interest relies on random entrapment events during polymerization and may not ensure efficient, homogeneous, o…
A series of new formulae have been developed for describing the kinetics of solid–gas reactions with an emphasis on diffusion control. Compared with traditional methods, these new equations can be used to treat not only sphere samples but also cylinder, cuboid, and cube samples. Different from the traditional methods,…
The purpose of this study is to investigate the potential of magnetic nanoparticles for enhancing drug delivery using a low oscillating magnetic field (OMF) strength. We investigated the ability of magnetic nanoparticles to cause disruption of a viscous biopolymer barrier to drug delivery and the potential to induce t…
Nanofibers fabricated by electrospinning are morphological mimics of fibrous components of the native extracellular matrix, making nanofibrous scaffolds ideal for three-dimensional cell culture and tissue engineering applications. Although electrospinning is not a conventional technique in cell biology, the experiment…
Zn 1- x Fe x O ( x =0.011, 0.029, 0.048, 0.10, 0.20) thin films have been grown on Al 2 O 3 (0001) substrates by magnetron co-sputtering technique. X-ray diffraction analysis revealed that Fe atoms were successfully incorporated into ZnO host matrix, and the films exhibited wurzite structure up to x = 0.20 with reduce…
The behavior of Sr in the aragonite shells of the bivalve Arctica islandica has been explored to determine its potential for high‐resolution environmental reconstruction. The structural state of Sr in the shell was investigated using X ray absorption fine structure (XAFS) and Sr/Ca variations across the prismatic laye…
Compared with current standard finishing processes, plasmas have the crucial advantage of reducing the usage of chemicals, water and energy. Moreover, they offer the possibility to obtain typical textile finishes without changing the key textile properties. No wonder there is an increasing interest in plasma for texti…
Metamaterials are understood to be artificially engineered materials that exhibit unusual or difficult to obtain electromagnetic (EM) properties. Such properties would include negative or low values of permittivity, permeability and index of refraction. In this article, we review the fundamentals of metamaterials with…
To date, wet syntheses of single-crystalline ZnO micro- and nanotubes have been carried out using a two-step indirect approach in which a selective dissolution step is required in order to create the vacant space in the tubular structures. In this work, we develop a direct growth process for preparation of single-crys…
Modification of BiFeO3 multiferroic ceramics were investigated by introducing NaNbO3 to form (Bi1−xNax)(Fe1−xNbx)O3 (x=0.1, 0.3, and 0.5) solid solutions. With increasing NaNbO3 content, the crystalline structure changed and the ferroelectric properties were improved. The significantly reduced leakage resulted in more…
The goal of this study is to examine how the extrusion process affects the dispersion, length, and thermal degradation of cellulose fibers (CF) in polypropylene (PP) composites. Bleached sulfite CF are pelletized and then compounded (20 and 30wt%) in a co-rotating twin screw extruder. The pelletizing process of CF is…
A simple strategy for the synthesis of macro-mesoporous carbonaceous monolith materials has been demonstrated through an organic-organic self-assembly at the interface of an organic scaffold such as polyurethane (PU) foam. Hierarchically porous carbonaceous monoliths with cubic (Im $$ \bar 3 $$ m) or hexagonal (p6mm)…
Using a stainless steel mesh as a template collector, electrospun nanofiber meshes with well-tailored architectures and patterns were successfully prepared from biodegradable poly (epsilon-caprolactone) (PCL). It was found that the resulting PCL nanofiber (NF) meshes had similar topological structures to that of the t…
Plasma treatment at atmospheric pressure using a dielectric barrier discharge was carried out to increase the surface hydrophilicity of wood and wood-based materials. Surface energy determination by contact angle measurement revealed an increase in the polar component of surface energy and in total surface energy foll…
The ability of optical axis gratings (OAGs) to fully transfer the energy of an unpolarized incident light beam into the ±1st diffraction orders is explored below for development of a polarization-independent optical system with nonlinear transmission. Diffractive properties of OAGs based on azo dye doped liquid crysta…
Microwave absorber using hierarchically branched Ni nanowires based composite was introduced in this work. The nanostructure constituents greatly suppressed the eddy current and improved the magnetic anisotropy. Their composite with wax matrix showed strong and broadband electromagnetic attenuation around 8.23 GHz whe…