Materials Literature
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Niobium-doped ZnO (NZO) transparent conductive films are deposited on glass substrates by rf sputtering at 300° C. Effects of sputtering power on the structural, morphologic, electrical, and optical properties of NZO films are investigated by x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM)…
Abstract Magnesium hydroxide (MH) flame retardant dynamic vulcanized ethylene‐propylene‐diene terpolymer (EPDM)/polypropylene (PP) thermoplastic vulcanizates (TPVs) were prepared by a twin‐screw extruder. Influences of MH on their morphology, mechanical properties, flammability, and crystallization behavior have been…
ZnO nanospheres are synthesized by a two-step self-assembly method. X-ray diffraction pattern and Raman scattering spectra measurements show that all the samples present a typical wurtzite structure. A regular sphere shape is inspected by field emission scanning electron microscope and transmission electron microscope…
Electronic structure of 2,4,6-tridehydropyridine and isoelectronic 1,3,5-tridehydrobenzene is characterized by the equation-of-motion spin-flip coupled-cluster calculations with single and double substitutions and including perturbative triple corrections. Equilibrium geometries of the three lowest electronic states,…
We examined the optical features of single wall carbon nanotubes (SWNTs) and the inner tubes within double walled carbon nanotubes (DWNTs) having the same (n,m) chirality. The brighter and more stable photoluminescence signals as well as the larger absorbance were observed for the semiconducting inner tubes within DWN…
Biocompatible oils are used in a variety of medical applications ranging from vaccine adjuvants to vehicles for oral drug delivery. To enable such nonpolar organic phases to serve as reservoirs for delivery of hydrophilic compounds, we explored the ability of block copolymer micelles in organic solvents to sequester p…
Transition-metal dithiolene complexes have interesting structures and fascinating redox properties, making them promising candidates for a number of applications, including superconductors, photonic devices, chemical sensors, and catalysts. However, not enough is known about the molecular electronic origins of these p…
High quality orthorhombic (OT) HoMnO3 (HMO) thin films with a-axis perpendicular to the film surface are grown on SrTiO3(110) substrates with the method of pulsed laser deposition. The structural, magnetic, and dielectric properties of OT-HMO films are measured. The temperature-dependent magnetization clearly displays…
A stilbene-containing fluorinated polyimide with high optical and thermal stability was prepared. The photoinduced anisotropy in this polyimide was investigated by measuring its dichroism and photoinduced birefringence. A large photoinduced birefringence (Deltan approximately 10(-2)) was achieved in the polymer. Stabl…
ADVERTISEMENT RETURN TO ISSUEPREVNoteTetragonally Packed Cylinder Structure of Comb−Coil Block Copolymer Bearing Heteroarm Star ArchitectureWei-Shan Chiang†, Chia-Hung Lin‡, Chao-Lin Yeh†, Bhanu Nandan†⊥, Pei-Nan Hsu†, Chiu-Wei Lin†, Hsin-Lung Chen*†, and Wen-Chang Chen*‡§View Author Information Department of Chemical…
Abstract Two metallocene ethylene‐1‐octene copolymers differing in comonomer content were cross‐linked either by dicumyl peroxide (DCP) or β‐radiation with doses ranging from 0.5 to 4% DCP and 25 to 200 kGy, respectively. The effect of cross‐linking on the crystalline morphology was analyzed by differential scanning c…
Almost 30 years after the introduction of heart valve prostheses patients worldwide are benefiting from the implant of these devices. Among the various types of heart valves, the ones made of treated bovine pericardium have become a frequently used replacement of the heart's native valve. Lyophilization, also known as…
Glasses in the P2O5-V2O5-ZnO/B2O3 (PVZ/B) system, were investigated on the thermal properties such as glass transition temperature, dilatometer softening point and coefficient of thermal expansion, and chemical properties (aqueous durability) in order to determine their applicability as barrier-ribs in plasma display…
Abstract A number of the novel photochromic polyethylene (PE)‐based liquid crystal composites were prepared and studied. The oriented stretched porous polyethylene films were used as the polymer matrices. Commercial liquid crystals doped with new photochromic compounds were introduced into PE films and photo‐optical p…
A simple wet chemical method was developed to control the size and shape of the Zinc oxide (ZnO) nanostructures in the presence of new, efficient, and low-cost templates like ameline, sorbitol, and polyethylene glycol (PEG, Mw = 200) at low temperature within a few minutes. Nanorods and nanoparticles have been achieve…
A series of ortho-metallated Pd and Pt complexes containing an imine ligand carrying three alkoxy chains and N-benzoylthiourea derivatives as co-ligands were prepared and their liquid crystalline properties investigated. Their structures were assigned based on elemental analysis, IR and 1H NMR spectroscopy, whereas th…
Very little work has been done in the area of spandex-blend weft knits. This paper presents the findings of knits produced from cotton/spandex- and polyester/spandex-blend knits produced from core spun yarns. The dimensional properties of cotton/spandex knits compare well with those of cotton knits. The behaviour of t…
A fast, simple, and inexpensive method to fabricate in air, p-n diodes using electrospun tin oxide nanoribbons and regioregular poly(3-hexylthiophene) nanofibers is described. In addition to being a rectifier under ambient illumination or in the dark, the advantage of our design is the complete exposure of the rectify…
We examine the thermal conductivity k and interface thermal conductance G for amorphous and crystalline Zr47Cu31Al13Ni9 alloys in contact with polycrystalline Y2O3. Using time-domain thermoreflectance, we find k=4.5 W m−1 K−1 for the amorphous metallic alloy of Zr47Cu31Al13Ni9 and k=5.0 W m−1 K−1 for the crystalline Z…
Abstract The use of fiber from Harakeke (or New Zealand Flax plant) for the reinforcement of composites should be explored since Harakeke has similar properties to Sisal fiber. To maximize the cellulose content in the fiber, Harakeke fibers were prepared by thermal, combinative alkaline‐thermal, and a novel combinativ…