Materials Literature
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Coupling ZnO with carbon materials using a suitable integration method to form ZnO-carbon composites has been established as a promising strategy to ameliorate the photocatalytic performance of semiconductor ZnO. In this perspective article, we describe the recent advances and current status of enhancing the photocata…
The ICH quality vision introduced the concept of quality by design (QbD), which requires a greater understanding of the raw material attributes, of process parameters, of their variability and their interactions. Microcrystalline cellulose (MCC) is one of the most important tableting excipients thanks to its outstandi…
Trabajo presentado en la 3rd European Conference on NanoFilms & Al-NanoFunc Final Conference (Microstructural and chemical characterization in the nano-scale), celebrada en sevilla del 7 al 11 de julio de 2014.
Proton conduction behaviors in oxides have theoretically been investigated in a first-principles manner, taking several proton-conducting oxides with various crystal structures as model systems. The local structures around proton sites and the migration mechanisms greatly depend on the types and connections of oxygen…
(Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 (BCZT) -xSm2O3 nanocomposite films with different molar ratio x were successfully de posited on SrRuO3-coated (001) SrTiO3 substrates by pulsed laser deposition. The strain state of nanocomposites is closely related to planar lattice mismatch between film and substrate, and vertical lattic…
Wide band electromagnetic (EM) scattering characteristics of randomly rough surface in the terahertz (THz)frequency range are investigated through the use of finite difference time domain(FDTD) algorithm. Then the scattering characteristics of double negative materials(DNM) randomly rough surface are investigated furt…
We present a new cathode structure that the field emission current can be modified. A triode structure of graphene cathode with nano-scale sharp folds with two plat electrodes at two sides is presented in which an internal electrical field can be applied across the graphene fold, which is serving as field emission tip…
Co-doped ZnO nanoparticles were fabricated by an electrodeposition method. The XPS results show Co ions have doped into the ZnO crystal lattices successfully. The as-grown sample has no ferromagnetism at room temperature. But after an ammine plasma treatment the room temperature ferromagnetism were detected on Co0.04Z…
This paper describes observed changes in the emission from a 100-tip Spindt cathode array operated at peak emission levels that produced Joule heating and temperatures sufficient to cause surface self-diffusion at the tips. This well-known thermal field forming effect can produce blunting or sharpening of the emitter…
In this paper, we present a novel electronically switchable metasurface that provides absorption and reflection modes depending on bias voltages of pin diodes. The metasurface is designed by a periodic split ring resonator loading the pin diode. When the pin diodes turn on, the metasurface is working as the absorber.…
Field emission properties of vertically grown Carbon Nanotubes (CNTs), Nanoflakes (CNFs), and mechanically exfoliated Highly Oriented Pyrolitic Graphite (ex-HOPG) has been investigated using digital Field Emission Microscopy (FEM), Current-Voltage (I–V), and Current-time (I-t) measurements. Prior to the field emission…
Superhydrophobicity is directly related to the wettability of the surfaces. Cassie-Baxter state relating to geometrical configuration of solid surfaces is vital to achieving the Superhydrophobicity and to achieve Cassie-Baxter state the following two criteria need to be met: 1) Contact line forces overcome body forces…
The flame retardant properties of the epoxy resin thermosets incorporated with hexa-phenoxyl- cyclophosphazene (HPCP) were investigated via limited oxygen index (LOI) and cone calorimeter. The results show that the LOI value increased, the peak of heat release rate (pk-HRR) and total heat release (THR) decreased, the…
Joint condensation of 4,5-bis(4-hexadecyloxyphenoxy)phthalonitrile ( A ) and tetrachlorophthalonitrile ( B ) in boiling hexan-1-ol in the presence of lithium hexan-1-olate and subsequent reaction with LuCl 3 · 6 H 2 O gave single-decker lutetium complexes with unsymmetrical phthalocyanines ( AABB , ABAB ). Reactions o…
Films of chitosan (Ch), Ch+0.5%(v/v) the citral (CI), Ch+2.5%(w/v) the citral β-cyclodextrin inclusion complex (β-CD-CI) and the physics mixture CI and β-CD-CI were prepared on the quality of fresh beef during refrigerated storage at 4±1°C were investigated, and verified the preservation effect of wrap fresh beef. The…
Al doped ZnO linear resistors were prepared by the high energy ball milling. The effects of content of Al2O3 on the electrical properties of the linear resistors were investigated. Al doped ZnO reduces the non-linear coefficient to some extent at the sintering temperature of 1350°C. When the content of Al2O3 was 3·5 m…
Excellent dispersion of silicon quantum dots (Si QDs) in water is realized by combining the processes of hydrosilylation and self-assembly. As described by X. D. Pi and co-workers on page 751, the size of self-assembled Si QD micelles can be tuned from 10 to 100 nm. This image schematically shows red-light-emitting Si…
The behavior of the effect of microwave plasma micromachining on electronic properties of (100) silicon crystal surfaces at weak adsorption was investigated. Model process mechanisms and factors providing stable modification of the electronic properties of the silicon surface by the formation of built-in surface poten…
Transparent conductive aluminium doped zinc oxide (AZO) thin films were prepared on quartz substrates by spin coating method with different annealing temperatures. The structural, electrical and optical properties of AZO thin films were investigated. The AZO thin films had a hexagonal wurtzite structure and the orient…
Ceria and nickel pattern anodes are prepared and tested in order to gain a fundamental insight into the electrochemical oxidation of hydrogen on either of these surfaces. It is found that ceria is highly active towards electrochemical oxidation of hydrogen with lower polarisation resistance because of the mixed ionic…