Materials Literature
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The effect of methanol concentration on the performances for passive air-breathing direct methanol fuel cell (DMFC) was studied by single cell tests and methanol transfer theory. With the increase of methanol concentration, the Faradic efficiency and energy efficiency were decreased due to the methanol crossover effec…
A novel bisphenol F-type dianhydride(BPFDA) monomer was synthesized using 4-chlorophthalimide through hydration, acidification, and dehydration. Its structure was determined with 1H NMR and IR. Two types of polyimide films were prepared with the dianhydride and 4,4′-diaminodiphenyl ether(ODA) or 4,4′-methylene dianili…
The synthesis, characterization, and photovoltaic performance of two new organic dyes, hexapropyltruxeneamino-rhodanine-3-acetic acid(MXD8) and hexapropyltruxeneamino-3,4-ethylenedioxythiophene rhodanine-3-acetic acid(MXD9), were reported. The two dyes contain truxene-based triarylamine as electron donor and a rhodani…
The authors synthesized the core-shell nanoparticles of SiO2-coated SiO2:Tb3+ by using sol-gel method (SiO2:Tb3+ @SiO2), and studied the influence of core-shell ratio and preparation craftwork on its luminescence properties. The photograph of TEM and EDS showed that SiO2:Tb3+ were coated successfully by SiO2. The auth…
Cette thèse a pour but d'étudier le transport de charges pho- togénérées dans des matériaux hybrides composés de polymères π-conjugués et de nanocristaux de semi- conducteurs, conçus pour des applications en opto-électronique. La synthèse chimique permet d'obtenir des nanocristaux de CdSe à l'échelle du…
Los puentes vehiculares con frecuencia sufren daños por corrosión, sobre todo, si están ubicados en la costa o si están expuestos a la humedad o impactos químicos. Por tanto, es conveniente contar con recomendaciones técnicas para evaluar su efecto en la seguridad estructural y proveer condiciones aceptables para la o…
The field of industrial fluorine generation has not made significant progress in the past 60 years due to the difficulty and hazards surrounding the use of hydrofluoric acid (HF) and fluorine gas. This work examines various carbon materials for their use as electrodes in the electrochemical generation of elemental flu…
Used as the sealing filler. The 8YSZ/Cusil ABA/ 430SS sandwich couples are bonded by a vacuum brazing method. We investigated the interfacial reactions and aging behavior of the sandwich couples. A eutectic structure of Ag and Cu, TiO, Cu3Ti3O and Cu2Ti4O phases were observed in the 8YSZ/ Cusil ABA/ 430SS sandwich cou…
In order to clarify the mechanism of formation of nodules and whiskers on the conducting wires used in aluminum electrolytic capacitors, aluminum–tin binary alloys were subjected to an investigation as the model alloys for the joints in the conducting wires. The concentration of tin in the binary alloys was 1, 5 or 10…
The (In15Sb85)(100-x)Zn(x) films (x = 0 - 17.4) were deposited on nature oxidized Si wafer and glass substrate at room temperature by magnetron co-sputtering of Sb target and InZn composite target. The thermal property of the films was examined by a homemade reflectivity thermal analyzer. Microstructures of the films…
A surface force apparatus has been used to investigate the fluidity of water confined between two mica surfaces. The observed normal surfaces forces F(D), where D is separation, were fitted to the expression of Derjaguin Landau Verwey Overbeek theory. The abrupt jump-in from separation D j =3–5 nm to flat adhesive con…
In this paper, a large-scale of three-dimensional multi-layered ZnO flowers constructed by porous nanosheets were fabricated on Zn foils through a surfactant-free hydrothermal method. The morphology and microstructures of precursors and the mesoporous ZnO flowers were revealed by scanning electron microscopy. Based on…
A metallic heterowaveguide array, which is alternatively stacked by two kinds of metal-insulator-metal waveguides in a dual-periodic arrangement, has been investigated numerically. Based on the transfer matrix method and the principle of plasmon Bragg reflector, multi-resonant surface plasmon modes with high quality f…
Article Production of Nano Silver Sol Particle by Biological Reduction Process was published on December 1, 2011 in the journal Journal for Manufacturing Science and Production (volume 11, issue 1-3).
The temperatures of microheater devices for the localized growth of carbon nanotubes (CNTs) were brought under control to a great extent by providing the appropriate electric load (direct current or voltage) to the microheater circuit. The electrical-thermal coupled field simulations show that high temperatures only a…
OBJECTIVE: To study the acute and chronic toxicity of Tiangou Jiangya capsule. METHOD: Tiangou Jiangya capsule was intragastrically administered to mice twice a day. The appearance, behavior, mental status, respiratory changes of mice and the number of poisoned and dead mice in each group were noted daily for 14 conse…
Tip-enhanced Rayleigh scattering images of Ge quantum dots grown on a Si substrate have been observed at room temperature. Changing the wavelength of the incidence light from 405 to 590 nm, the contrast of the images is reversed. It is found that the scattering intensity depends on the dielectric constants of the mate…
Abstract The treatment of coherent interfaces and cracks is discussed in the framework of dislocation dynamics (DD). In the case of interfaces, we use DD to study dislocation interactions in nanoscale bimetallic laminates, and to predict their structure after relaxation and during loading. In agreement with experiment…
Here we describe a simple physical vapor deposition (PVD) method to prepare large quantity of highly monodispersed perylene nanotablets with a deposition-temperature controlled approach. The nanotablets produced are 1 microm octagon with 100-200 nm thickness. Confocal microscopic images of the nanotablets excited with…
Polypropylene bag industry is labor intensive and faces tremendous labor and machine maintenance problems, which challenge the quality of the fabric. Weaving defects manifest themselves as holes or missing tapes in the fabric, which compromise the strength and usability of the fabric. This technical paper outlines the…