Materials Literature
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Molecular mechanics simulation of atomic-scale peeling of carbon nanotube (CNT) from the graphite substrate surface is performed. We have first obtained the theoretical 'peeling force curve' of the CNT, where the CNT physically adsorbed on the graphite substrate surface is gradually retracted or peeled. In the simulat…
This paper investigates the bending stability of a multi-wall carbon nanotube (MWNT) embedded in an elastic medium, based on a multiple shell model. The effects of the surrounding elastic medium and the van der Waals forces between two adjacent tubes are taken into account. The critical bending moment and the correspo…
Fluorescent quantum dots (semiconductor nanocrystals) have the potential to revolutionize biological imaging, but their use has been limited by difficulties in obtaining quantum dots that are water soluble and biocompatible. The objectives of our research were to develop a methodology for encapsulation of cadnium-sele…
The isostructural complexes [{Tp'W(CO)(2)(eta(2)-C(2)S(2))}(2)M] (M = Ni, Pd, Pt) show that the eta(2)-C,C'-alkyne complexes of acetylenedithiolate at [Tp'W(CO)(2)](+) can generally act as dithiolate chelate ligands, leading to dithiolene type complexes.
This paper gives information regarding a new solid‐state thin film electrochromic device (ECD) designed for IR emissivity modulation. The variable emissive properties make the new ECD an ideal spacecraft antenna thermal management system. Specific attention is focused on a new electrochromic system (an Eclipse Energy…
A system level analysis, inclusive of mass, is carried out for a cryogenic hydrogen fueled hybrid solid oxide fuel cell and bottoming gas turbine (SOFC/GT) power system. The system is designed to provide primary or secondary electrical power for an unmanned aerial vehicle (UAV) over a high altitude, long endurance mis…
Abstract Deconstruction is the selective dismantling of building structures to recover the maximum amount of primarily reusable and secondarily recyclable materials in a safe and cost-effective manner. Deconstruction is a labor intensive process and can be difficult to achieve in a time-efficient and economical manner…
Along with climate and physical activity, textiles have an effect on sweating and the development of odours. Accordingly, textiles inadequately optimized in terms of clothing technology as a result of poorly cut structures or poor materials result in increased sweating and odour. However, the development of body odour…
Micron-scale ordered patterns of highly conjugated molecules consisting of a [2.2]paracyclophane framework containing a conjugated linear arylethynyl side-chain are prepared. These patterns were obtained through an approach where a metallic (Cu) grid is positioned onto indium-tin-oxide (ITO)/glass substrates followed…
Carbon nanotube (CNT) vertical integration and electrical properties are presented in full 6-inch wafer for interconnect applications. Series array of 1000 vias made of vertically grown CNTs is obtained with uniform electrical resistances within the wafer. Integration processes are implemented by following sequential…
A family of ligands based upon the linking of two or three bis-(2-pyridyl)pyridazine (dppz) moieties via the 4- or 4,5-positions of the pyridazine rings has been synthesised using an inverse electron demand Diels–Alder pathway. Thus, reaction of 3,6-di(2-pyridyl)-1,2,4,5-tetrazine (dptz) with a series of dienes (1,4-d…
In 1911, Vorlärnder reported liquid-crystalline properties of unique “flying-seed-like” alkali metal carboxylates. They are neither “rod-like” nor “disk-like”. Moreover, they have neither a rigid core nor flexible long chains. The molecular shapes are totally different from about 93 000 general liquid crystalline comp…
Protein crystals, routinely prepared for the elucidation of protein 3D structures by X-ray crystallography, present an ordered and highly accurate 3D array of protein molecules. Inherent to the 3D arrangement of the protein molecules in the crystal is a complementary 3D array of voids made of interconnected cavities a…
Location of partial discharge sources via the recording of wideband VHF/UHF signals is well known. Having obtained good accuracies, researchers in this area now aim to develop characterization techniques comparable to those of more traditional contact systems. One obstacle hindering this development is the lack of a c…
Three novel symmetrical bent-core compounds were synthesized where the terminal alkoxy linkages of the original bent-core mesogen forming a B phase was converted to -alkyl carboxylates. It is found that instead of the B phase, all three compounds exhibit a transition between B' and B mesophases. The physical and elect…
ZnO thin films were epitaxially deposited on platinum∕c-sapphire epitaxial layer using a radio frequency magnetron sputtering method. Xe, rather than Ar, was used as the sputtering gas. The leakage current as well as dielectric loss was suppressed upon use of Xe. Moreover, the full width at half maximum ω scan and sur…
The ring-opening polymerization of L,L-lactide by using immobilized lipase Candida Antarctica (Novozym 435) as a catalyst at a temperature of 100 °C in bulk was conducted. This process was found to yield the corresponding poly(L,L-lactide) (PLLA) with weight-average of molecular weights of about 2,440 and a polydisper…
Solid oxide fuel cells (SOFCs) consisting of an Y-stabilized (YSZ) electrolyte, cathode, and anode support were operated directly using isooctane. The electrical performance of SOFCs operating with in was measured over a temperature range of 600– . Open-circuit voltages achieved slightly over . The maximum power densi…
Thermally stable aramid–silica nano-composites have been prepared via the sol–gel process. Two types of aramid matrices were used. Polyamide chains having no pendant hydroxyl groups were prepared by reacting a mixture of 1,3- and 1,4-phenylenediamine in 65:35 mole ratio with equivalent amount of terephthaloyl chloride…
Periodic mesoporous ethylenesilicas with hexagonal P6mm and cubic Fm3m/Pm3n symmetry were prepared by using divalent surfactant C(16-3-1) and binary surfactant mixtures C(18-3-1) and C18TABr as structure-directing agents, respectively, under basic conditions. A tetramethyldisilazane-based surface silylation was carrie…