Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Plant cellulose is the most abundant organic compound on earth. Technologies for producing cellulose fiber or improving the enzymatic saccharification of cellulose hold the key to biomass applications. A technology for atomizing biomass without strong acid catalysis remains to be developed. The water jet is a well-kno…
Crosslinkers that undergo large changes in length upon photoisomerization can produce large conformational changes, and thereby functional changes, in biomolecules. We have designed and synthesized extended and rigid bis-azobenzene crosslinkers: 4,4'-bis(4-(2-chloroacetamido)phenyl)diazenylbiphenyl (BPDB) and the wate…
This paper presents a review of the last T-11M and T-10 tokamak activity in the field of Li plasma facing component (PFC) investigation. Attention is mainly paid to the realization of the concept of closed loop lithium circulation as a solution of the PFC problem of a steady-state DT volumetric neutron source on a tok…
An overview focused on the synthesis, structural features, and catalytic applications of lanthanum salen complex heterogenized in iron pillared montmorillonite is described here. In this approach the pillaring species was introduced in the interlayers of montmorillonite by a simple cation-exchange mechanism. The mater…
We present insightful results on the kinetics of photodarkening (PD) in Ge(x)As(45-x)Se55 glasses at the ambient and liquid helium temperatures when the network rigidity is increased by varying x from 0 to 16. We observe a many fold change in PD and its kinetics with decreasing network flexibility and temperature. Mor…
Chiral metallic nanohelices with periodicity in the submicrometer regime are made from twisted CdTe nanoribbons. These helices are highly effective in polarization rotation at wavelengths centered at their pitch length. Interestingly, the chiro-optical performance of helical nanoparticle assemblies is better than that…
We propose a novel optical transformation to design homogeneous isotropic bends connecting multiple waveguides of different cross sections which can ideally tunnel the wave along any directions through multiple waveguides. First, the general expressions of homogeneous and anisotropic parameters in the bend region are…
Summary Films formed from polysaccharides, as chitosan, present a high permeability in water vapour. In order to increase resistance to water vapour for chitosan‐based films, different lipid fractions were incorporated into a filmogenic matrix: fish and vegetable oils, stearic and oleic acids. The chitosan showed a mo…
Au was loaded (1 wt%) on a commercial MgO support by three different methods: double impregnation, liquid-phase reductive deposition and ultrasonication. Samples were characterised by adsorption of N2 at -96°C, temperature-programmed reduction, high-resolution transmission electron microscopy, energy-dispersive X-ray…
Production of stent precursors in the form of small-size tubes has been evaluated by hot compression tests and extrusion trials on the AZ31B and ZM21 magnesium alloys. The investigation here presented mainly reports on the effects of extrusion parameters on microstructure and properties of the tubes. Processing at 410…
Layered double hydroxides of Mg and Al (Mg–Al LDH) were synthesized with OH –, Cl –, or CO 3 2– as charge compensating anions. The materials were calcined at 500 °C in air. The bromate uptakes of calcined and uncalcined LDH materials were investigated from 0.78 μmol/dm 3 bromate solution. Results show that uncalcined…
Heat transfer is investigated on three levels of description: Fourier, Cattaneo, and Peierls. The microscopic nature of the heat that becomes important, in particular in nanoscale systems, is characterized by a vector field related to the heat flux on the Cattaneo level and by the phonon distribution function on the P…
Abstract Cycloaliphatic epoxy oligosiloxane resins with a high degree of condensation (>85%) were synthesized by a nonhydrolytic sol–gel reaction using 2‐(3,4‐epoxycyclohexyl)ethyltrimethoxysilane (ECTS), diphenylsilanediol (DPSD), and triphenylsilanol (TPS). Cycloaliphatic epoxy hybrimers with 2 mm thickness fabri…
The relative leaching potential and degradation of water-dispersible CdSe and CdSe/ZnS quantum dots (QDs) were evaluated using small-scale soil columns. The potential of QDs to release toxic Cd(2+) and/or Se(2-)/SeO(3)(2-) ions upon degradation is of environmental concern and warrants investigation. Both classes of QD…
SUMMARY Commercial polyester textiles have been finished with hydrotalcite, nanometric titania and silica aqueous suspensions and further characterised in order to investigate their combustion behaviour. Two different features of the finishing procedure have been studied: the role of immersion time and the pH suspensi…
The crystallization behavior of thin bisphenol A polycarbonate (PC) films after treatment in supercritical CO 2 (ScCO 2 ) was investigated by using polarized optical microscopy (POM) and atomic force microscopy (AFM). Experimental results indicated that the crystallization ability in thin PC film of 259 nm thick was h…
We present a theoretical analysis of the inverse problem in self-assembly. A particular scheme is proposed for building an arbitrary desired nanostructure out of self-assembled building blocks ("octopus" nanoparticles). The conditions for robust self-assembly of the target structure are identified. This includes the m…
Two series of CdSe quantum dots (QDs) with different diameters are prepared, according to frequently used protocols of the same synthetic procedure. For each sample the photophysical properties and the potentials for the first reduction and oxidation processes in organic solution are determined. The band gap obtained…
With the expansion of the potential applications of carbon nanotubes (CNT) in biomedical fields, the toxicity and biocompatibility of CNT have become issues of growing concern. Since the immune system often mediates tissue damage during pathogenesis, it is important to explore whether CNT can trigger cytotoxicity thro…
We have fabricated extraordinary magnetoresistance (EMR) device, comprising a monolayer graphene with an embedded metallic disk, that exhibits large room temperature magnetoresistance (MR) enhancement of up to 55,000% at 9 T. Finite element simulations yield predictions in excellent agreement with the experiment and s…