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。
Most left-handed metamaterials cannot be described by local effective permittivity or permeability tensors in the visible or near-infrared due to the mesoscopic size of the respective unit cells and the related strong spatial dispersion. We lift this problem and propose a metamaterial exhibiting artificial magnetism t…
The synthesis and characterization of four new DOTA-tetraamide ligands having variable alkyl chain lengths (C(1), C(12), C(14), and C(16)) and their respective europium (III) complexes are reported. The three EuL complexes having long alkyl chains spontaneously form micelles of variable size. The critical micelle conc…
Abstract Water-dispersed colloidal gold nanoparticles (AuNPs) with high concentration were synthesized from metal precursor HAuCl 4 . The bovine serum albumin (BSA) and heterobiofunctionalized thiol polyethylene glycol acid (HS–PEG–COOH) were used as biofunctionalized layers for the synthesized AuNPs. The BSA and HS–P…
Here we address the important role played by electric fields applied in carbon nanotube bundles in providing convenient scenarios for their use in electronic devices. We show that a gap modulation may be derived depending on the bundle configuration and the details of the applied field configuration. The system is des…
We demonstrate high-efficiency half-wave retardation in diffracted light in the 2nd order Littrow mounting. The diffracting structure is a slanted crossed grating with subwavelength period in the direction of the second grating vector, which makes it possible to mix the polarization states of the input light inside th…
Abstract Plastisols based on polyvinyl chloride (PVC) can be processed by different techniques; their processability markedly depends on their flow properties and gelation/fusion processes. Classically, PVC has been the only polymer present in plastisol formulations. The present work explored the possibility of adding…
Abstract In an epoxy/layered silicate nanocomposite containing different organically modified layered silicats, the effect of various organic modifications and the layered silicate content on the layer distances are investigated by transmission electron microscopy (TEM), X‐ray diffraction (XRD) measurements, and 1 H s…
The particle-hole continuum in the Dirac sea of graphene has a unique window underneath, which in principle leaves room for bound state formation in the triplet particle-hole channel (Baskaran and Jafari 2002 Phys. Rev. Lett. 89 016402). In this work, we construct appropriate triplet particle-hole operators and, using…
The objective of this work was to study the polymorphic transformation of carbamazepine from Form II to Form III in 1-propanol during seeded isothermal batch crystallization. First, the pure Form II and Form III were obtained and characterized. Then their solubilities and metastable zone limits were measured by in-sit…
The detailed atomic structures of shock compressed basaltic glasses are not well understood. Here, we explore the structures of shock compressed silicate glass with a diopside–anorthite eutectic composition (Di 64 An 36 ), a common Fe‐free model basaltic composition, using oxygen K‐edge X‐ray Raman scattering and high…
In this work MnCl 2 @SWNT and MnBr 2 @SWNT nanocomposites were prepared via capillary filling of single-walled carbon nanotube channels by melts of manganese halogenides with slow cooling to room temperature for better crystallization. Electronic properties of MnHal 2 @SWNT nanocomposites have been investigated by X-r…
A multiglass state in which two distinct glassy phases coexist has been identified in multiferroic YbFe2O4. A collective magnetic freezing, as evidenced by AC susceptibility, magnetization, and coercivity measurements, develops at a freezing temperature TF ∼ 80 K. Meanwhile, the low-temperature dielectric and pyroelec…
Actinomycetes are a group of gram-positive bacteria that includes pathogenic mycobacterial species, such as Mycobacterium tuberculosis. These organisms do not have glutathione and instead utilize the small molecule mycothiol (MSH) as their primary reducing agent and for the detoxification of xenobiotics. Due to these…
High quality ZnO films have been obtained by utilizing buffer layers fabricated via nitrogen mediated crystallization (NMC), where sputtering method is employed for preparation of both buffer layers and ZnO films. The crystal grain size of ZnO:Al (AZO) films with NMC-buffer layers is about 3 times larger than that of…
Abstract A PVK/MWNT nanocomposite coating on stainless steel is developed and tested for antimicrobial and anticorrosion properties. The coating is prepared via electrochemical deposition onto SS surfaces and is monitored using cyclic voltammetry. High‐resolution XPS measurements of the C 1s and N 1s regions are used…
Abstract The development of high‐temperature electrochemical devices such as solid oxide fuel cells, oxygen, and hydrogen separators and gas reformers poses a great challenge in brazing technology of metal/ceramic joints. To maintain the integrity of such equipment, the resulting seals have to be stable and hermetic d…
At present synchrotron and neutron sources are the preferred choice for PDF analysis, but there is clearly an increasing need for a PDF solution based on inhouse diffraction equipment. Such a solution, though limited, will benefit areas where quick feedback about the materials properties is important and will allow th…
The performance of the second-order spin-flip constricted variational density functional theory (SF-CV(2)-DFT) for the calculation of the exchange coupling constant (J) is assessed by application to a series of triply bridged Cu(II) dinuclear complexes. A comparison of the J values based on SF-CV(2)-DFT with those obt…
Pure and thiourea doped L-histidine (TU-LH) organic single crystals were grown by slow solvent evaporation method. Structural characterizations of the grown crystals were carried out by single crystal X-ray diffraction (XRD). The functional groups were identified by Fourier transform infrared (FTIR) spectroscopy. The…
We present careful experiments on the spin order and multiferroicity of Mn-deficient Ca3CoMn1−xO6 with respect to the Co/Mn compensated Ca3Co1+yMn1−yO6. It is revealed that a slight destruction of the Co/Mn ionic order does not damage but significantly enhances the ferroelectricity in terms of the transition point and…