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。
Efficient use of any diffractometer design requires easy translation between points in reciprocal space and the setting of diffractometer angles. While it is reasonably straightforward to go from angle to reciprocal space, the opposite direction presents more challenges. In this paper, angle calculations are presented…
A high level of hole doping in CuO is realized by Li-substitution and pronounced effect on the structural, transport and magnetic properties of the cupric oxide is reported. The antiferromagnetic transition is reduced from ${T}_{N}=229\mathrm{K}$ in the undoped CuO to ${T}_{N}=91\mathrm{K}$ in ${\mathrm{Cu}}_{0.84}{\m…
A fully automated method for detecting and centring protein crystals for X-ray crystallography is described. It relies on the analysis of rotating crystal trace images. No assumption is made concerning the shape, absolute size, or position of the crystal within its holder. Crystals as small as 15 µm were successfully…
10.1088/0953-8984/16/12/026
A designer Quantitative Structure-Property Relationship, based upon molecular properties calculated using the AM1 semiempirical quantum mechanical method, was developed to predict the glass transition temperature of amine-cured epoxy resins based on the diglycidyl ether of bisphenol A. The QSPR (R2 = 0.9977) was gener…
Two μ-oxo silicon phthalocyanines have been synthesized and subjected to photophysical examination. The results have been compared to the monomeric and dimeric systems published previously. The Q-bands in the ground state absorption spectra undergo a blue shift with respect to the monomer due to an excitonic interacti…
As the closest relatives of embryophytes, the charophycean green algae ( sensu Mattox and Stewart) may reveal the evolutionary history of characters in this lineage. Recent molecular phylogenetic analysis indicates that the little‐known species Entransia fimbriata Hughes is a member of the charophycean order Klebsormi…
The large magnetic entropy change and changes in the magnetic properties of the antiferromagnetic compound LaFe 11.5 Al 1.5 caused by carbonization have been investigated. Both the parent compound LaFe 11.5 Al 1.5 and itscarbides crystallize in the cubic NaZn 13 -type structure. Carbonization brings about an obvious i…
Formation of a rough film of crystalline material on a smooth substrate resulting from kinetic roughening in epitaxy or erosion causes disproportionate changes in reflectivity for s- and p-polarized light. I present a mean-field theory of optical reflectivity difference defined as ${(r}_{p}\ensuremath{-}{r}_{p0}{)/r}_…
Abstract For Abstract see ChemInform Abstract in Full Text.
In situ studies on the effects of physisorption of various alcohol molecules (C n H 2 n +1 OH; n = 1–4) on the transport properties of thin films of bundled single-walled carbon nanotubes reveal large increases in the thermoelectric power (TEP) S ( ) and four-probe resistance R ( ) at 40 °C. Interestingly, exposure to…
The combination of transmission null ellipsometry (TNE) and attenuated total reflection (ATR) methods supported by absorption measurements is shown to be an effective tool to study spontaneous and photoinduced 3D order in azopolymers. We investigated a series of azobenzene containing side-chain polyesters differing by…
Thin CaHfO3 films were grown on (100) and (110)-oriented SrTiO3 surfaces with the aim of obtaining an insulator film for epitaxial oxide device design. We show that films grown on the (100) surface of SrTiO3 have a multidomain structure, which increases film roughness and decreases the maximum breakdown field of the i…
Thin films of amorphous aluminum oxide (a-Al2O3) codoped with Er3+ and Yb3+ ions have been in-depth nanostructured by distributing the rate earth (RE) ions in layers separated in the 0–3 nm range. The Yb to Er concentration ratio is varied from 0 to 3.6. The photoluminescence (PL) response at 1.53 μm exhibits an incre…
Large magnetostrictions of −1300 and +1100 ppm related in the different directions have been obtained in our stacked Fe85Ga15 ribbon samples. In the case of non-180° domain magnetization in the high anisotropic samples, the magnetostrictions are mainly attributed to the existence of Ga clusters which preferentially or…
The protein crystallography station at Los Alamos Neutron Science Center is the first to be built at a spallation neutron source. Time-of-flight methods in combination with a large electronic position-sensitive and time-sensitive detector are used in order to collect wavelength-resolved Laue diffraction data. The wave…
The influence of pH on the electrochemical behavior of electropolymerized, self-doped poly(aniline boronic acid) thin films in the presence of d -fructose has been investigated with voltammetry and potentiometry in phosphate-buffered saline solution. It was found that the complexation of boronic acid with d -fructose…
We calculate spin-dependent excitation energies of Ge and Si nanocrystals by means of a $\ensuremath{\Delta}$-self-consistent-field method that considers the excitation of an electron-hole pair and thus includes the electron-hole Coulomb interaction. The method is based on local-density and local-spin-density calculat…
NaBi(WO 4 ) 2 (NBW), NaBi(MoO 4 ) 2 (NBMo) and LiBi(MoO 4 ) 2 (LBMo) single crystals grown by the Czochralski technique have been doped up to a praseodymium concentration of in the crystal. 10 K polarized optical absorption and photoluminescence measurements have been used to determine the energy position of 32, 39 an…
The dielectric properties of glycinium phosphite (GPI) crystals as a function of temperature and electric field magnitude are investigated. The electric field E is applied perpendicularly to the ferroelectric b -axis in the direction of hydrogen-bonded phosphite chains in the crystal (the c -axis). The shift of the pa…