Materials Literature
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Fe?~30?at.%?Pd is well known as a ferromagnetic shape memory alloy. The influence of Co and Pt additions on the shape memory and magnetostrictive behavior of Fe?Pd has been examined in the present investigation.
Brownian dynamics (BD) simulations were carried out for suspensions of oblate spheroid particles interacting via the Gay-Berne (GB) potential. The oblate spheroid particles were applied as a model of disc-like particles and the system of suspension of the particles was considered. Numerically analyzed were both the ch…
A guanidinium compound, ${[\mathrm{C}{(\mathrm{N}{\mathrm{H}}_{2})}_{3}]}_{4}{\mathrm{Cl}}_{2}\mathrm{S}{\mathrm{O}}_{4}$, has been synthesized and characterized by x-ray diffraction, calorimetric, dilatometric, and dielectric measurements, and by optical examination in polarized light. At room temperature the initial…
The thermally induced shape recovery behavior of NiTi shape memory alloy (SMA) wire under constraint conditions and variable pre-strain conditions was investigated. Two kinds of deformation procedures have been performed: test (1), fixed pre-strain with variable constrained stress; and test (2), fixed constrained stre…
Liquid crystal displays (LCDs) - born in late 1960s - have become a 45 billion-dollar industry in 2004. Today's LCD panels cover a wide range of sizes from 0.2 to 82 in diagonal. The electro-optical characteristics of any field effect LCD are determined by the orientation of its liquid crystal (LC) molecules at the di…
[graph: see text] Condensation of squaric acid with a number of differently substituted 2-pyrrolyl derivatives afforded three new classes of squaraines. Their sharp and intense absorption bands in the biological window (700-900 nm), inherent singlet oxygen generation capabilities, together with proper functionalizatio…
Results are presented of complementary measurements that probe the electronic structure and charge-density wave (CDW) modulation in the quasi-two-dimensional compounds $\mathrm{La}{\mathrm{Te}}_{1.95}$ and $\mathrm{Ce}{\mathrm{Te}}_{2}$. Transmission electron micrographs show that the modulation wave vectors associate…
The wide viewing angle technologies for liquid crystal displays (LCDs) are reviewed. The most promising liquid crystal modes for wide view technologies, such as in-plane switching, multidomain vertical alignment, patterned vertical alignment, and advanced-super-view are compared. By optimizing the phase-compensation f…
Though Ni–Ti shape memory alloys are used extensively in a variety of engineering and medical applications because of their attractive shape memory characteristics, they still suffer from certain drawbacks, such as low transformation temperatures, difficulty in production and processing and high cost of raw materials.…
A flat microlens array whose focal length can be switched from positive to negative by electric field is demonstrated experimentally and confirmed by computer simulations. To generate the required gradient refractive index, an inhomogeneous electric field is created by a spherical indium-tin-oxide (ITO) electrode whic…
The transformation behavior of Ni–Mn–Ga submicron polycrystalline thin films was investigated with respect to target composition, different substrates, annealing temperature and film thickness. Two series of thin films (A and B) with thicknesses ranging from 0.1 to 5 µm were deposited onto alumina ceramic, poly-vinyl…
Novel naphthalocyanine (Nc) nanotubes with special wall structures were fabricated by a template method using Nc molecules as building blocks. Thermal stabilization of the ordered columnar structures of the tetrakis(tert-butyl)naphthalocyanine (Ni-BNc) molecules, induced from the pi-pi interactions in the nanoscale ch…
Collagen is a widely used material in biomedical applications. Although processes that prepare collagen and collagen-based materials that show suitable properties after extraction exist, a ready-to-use, easily stockable, with tailored collagen concentration has not yet been developed. Using rat tail tendons, acid solu…
Abstract This review article illustrates possible aspects for molecular‐weight enlargement and immobilisation of transition‐metal complexes that have been developed for bridging the gap between homogeneous and heterogeneous catalysis. The recycling of homogeneous catalysts can be performed using different types of sup…
Space program: A general template technique has been developed that enables various Au/Pt nanostructures, such as macroporous 3D films and nanostructures constructed from hollow spheres, to be prepared on silicon wafers and glass substrates (see SEM image). These ordered metallic nanostructures with hierarchical poros…
[reaction: see text] Carbon nanotube salts prepared by treating single-wall carbon nanotubes (SWNTs) with lithium in liquid ammonia react readily with aryl iodides to give SWNTs functionalized by aryl groups.
Simulation data are presented for a coarse-grained model of polycarbonate (BPA-PC), which allow for a detailed comparison of different ways to study the chain dynamics and predict the entanglement molecular weight. Most of the standard experimental quantities are determined for the very same set of systems and thus pr…
Supported manganese oxide catalysts were prepared by the impregnation of alumina foam blocks washcoated with alumina and silica. The manganese content based on the weight of the washcoats was 10 wt % calculated as MnO2. Fourier transform profiles of the Mn K-edge EXAFS spectra for these samples gave three distinctive…
Polystyrene surfaces grafted with a nonfouling interfacial interpenetrating polymer network (IPN) of poly(acrylamide-co-ethylene glycol/acrylic acid) [p(AAm-co-EG/AAc)] were modified with several peptide ligands adapted from bone sialoprotein (BSP). IPNs were modified with both single ligands and ligand blends to stud…
In this review paper, a detailed overview of the transflective liquid crystal display (LCD) technology is presented. We first introduce the transflector classifications based on their composition and properties. Then, in reviewing the development history, we investigate the mainstream transflective LCDs, including the…