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。
The whole circuit is obtained from the sun through a molecule called "Rhodopsin and bacteriorhodopsin". These molecules have the capability of trapping and storing energy from the sun light. These molecules are placed on the outer surface of the calculator to trap the energy and store it themselves for latter usage. T…
Structures with self-organised InAs quantum dots in a GaAs matrix were grown by the low pressure metal-organic vapour phase epitaxy (LP-MOVPE) technique. Photoluminescence in combination with photomodulated reflectance spectroscopy were used as the main characterisation methods for the growth optimisation. Results sho…
In the present study, we pin down the origin of the coexistence of the large thermopower and the large conductivity in Na$_x$CoO$_2$. It is revealed that not just the density of states (DOS), the effective mass, nor the band width, but the peculiar {\it shape} of the $a_{1g}$ band referred to as the "pudding mold" typ…
Two-electron oxidation of [{Pc(OEt)8}2TbIII]- [Pc(OEt)8=dianion of 2,3,9,10,16,17,23,24-octaethoxyphthalocyanine], which leads to a longitudinal contraction of the coordination space of the single-4f-ionic single-molecule magnet (SMM), resulted in a significant increase of the magnetization-reversal barrier energy and…
In this paper, the dependence of the differential Raman cross section $\ensuremath{\beta}$ of the $D$, $G$, ${D}^{\ensuremath{'}}$, and ${G}^{\ensuremath{'}}$ bands of nanographites on the excitation laser energy and also on the crystallite size is reported. We show that ${\ensuremath{\beta}}_{G}$ is proportional to t…
We examine the structure of the distribution of single particle displacements (van Hove function) in a broad class of materials close to glass and jamming transitions. In a wide time window comprising structural relaxation, van Hove functions reflect the coexistence of slow and fast particles (dynamic heterogeneity).…
We show that the polarization states of electromagnetic waves can be manipulated through reflections by an anisotropic metamaterial plate, and all possible polarizations (circular, elliptic, and linear) are realizable via adjusting material parameters. In particular, a linearly polarized light converts its polarizatio…
Abstract Two new types of membranes were synthesized by UV curing in our laboratory. The first type of membrane was made of three monomers: 2‐hydroxy‐3‐phenoxypropylacrylate(A), 4‐hydroxybutyl acrylate(B), and 2‐methyl‐2‐nitropropyl methacrylate(C1). The second type of membrane was made of the same monomers A and B, a…
The recognition of 4-alkylpyridines by water-soluble poly(ethylene oxide)-zinc porphyrin conjugates was studied with a focus on the thermodynamic parameters of binding. Microcalorimetric studies indicated that binding of the alkyl group of the guest in water is driven by the entropic term (delta DeltaH0 = DeltaH0(4-pe…
The magnetic properties of triatomic syn-anti carboxylate bridging copper(II) complex, {[Cu(2,2'-bipydine)(maleate)].2H2O}infinity (complex 1), were investigated experimentally and theoretically, suggesting weak ferromagnetic intrachain interaction. The magnetic data were analyzed and interpreted in terms of Heisenber…
The difference in the standard Gibbs‐free energies of NaNbO 3 and Na 3 NbO 4 has been determined by means of two electrochemical approaches based on potentiometric solid oxide electrolyte galvanic cells. The results are consistent with each other and prove the phase equilibrium between the niobates to be univariant. Q…
Abstract In order to obtain well‐controlled size and optimized structural properties, ZnO nanoparticles were grown from ethanolic solutions using acetate, acetylacetonate and dimethylpropylendiamine as stabilizer molecules. The low‐temperature syntheses yield considerably large amounts of pure, nanocrystalline powder.…
Abstract Special hierarchical dendrite‐like Au (DLAu) nanostructures were fabricated facilely between the gaps of Au electrodes by an electrochemical method. The composition, morphology and crystallinity of the DLAu nanostructures were characterized using energy dispersive spectroscopy, field emission scanning electro…
Abstract Diamond is one of the remarkable forms of carbon. For example, it can be found in nature with an impurity content of less than 1 ppm, or it can be synthesized either as a single‐crystal or as a polycrystalline deposit on various surfaces. Furthermore, boron doping makes it a p‐type semiconductor, and even sup…
This paper presents the preparation of crystalline mesoporous titanias using furfuryl alcohol as a polymerizable solvent and titanium(IV) butoxide as a titania source. In the synthesis, furfuryl alcohol (FA) initially stabilized titanium(IV) butoxide through alcohol exchange reaction, and then highly crosslinked poly(…
The electron transport in a four-terminal nanodevice consisting of two crossed nanotubes is investigated in the framework of the Landauer-B\"uttiker formalism. The evident formula for the ballistic conductance of the device is found using a model of crossed conductive cylinders with a point contact between them. Sharp…
Folate (FA) conjugated tri-block copolymers were prepared by bioconjugation of poly epsilon-caprolactonediol and various molecular weights of diamine polyethylene glycol. The synthetic tri-block copolymers were characterized by 1H-NMR. Three types of nanoparticles were prepared by nanoprecipitation. Their size and mor…
Abstract Samarium Barium Hafnium oxide (SmBa 2 HfO 5.5 ), a complex perovskite ceramic, was synthesized as nano‐ particles for the first time using an auto‐igniting combustion technique. Phase‐purity and particulate properties of the as‐prepared powder were studied using X‐ray diffraction, differential thermal and the…
Abstract Macroporous silicon membranes, prepared by photo‐electrochemical etching, were subjected to pore widening performed by multiple oxidation/oxide‐stripping cycles. We study the dependence of pore cross section and diameter on the oxidation parameters. The anisotropy of the oxidation process allows us to correct…
The interaction between peptides and gold surfaces has increasingly been of interest for bionanotechnology applications. To more fully understand how to control such interactions, we have studied the optical properties of peptide-modified gold nanoparticles as a function of peptide composition, pH of the surrounding m…