Materials Literature
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Epoxy composite coatings filled with boron nitride of single layer (SBN) were prepared through a dip-coating method. The friction and wear behaviors of the coatings were performed, and the results showed that the wear life of composite coatings was obviously higher than that of pristine coating with low SBN content; h…
Oxides containing both carbon and silicon had been elusive. One such oxide was synthesized under high pressure in 2011, but its structure was not known. An extensive computational search enabled by an evolutionary algorithm finds SiC${}_{2}$O${}_{6}$ to have a crystalline structure that is stable under pressure as hig…
The development of novel biodegradable supermolecules is of importance in designing functionalized biomaterials utilized in the field of tissue engineering and drug delivery. In this regard, the focus here is on biocompatible and biodegradable polyphosphoester ionomers, and their pseudopolyrotaxane (PPRX) formation wi…
The photochemistry of two isostructural metal-organic frameworks based on 5-amino/5-formamidoisophthalate (CAU-10-NH2 /NHCHO) or mixed-linker 5-amino/5-formamido- and 5-nitroisophthalate (CAU-10-NO2 /NH2 /NHCHO) has been studied using laser flash photolysis. 355 nm excitation of CAU-10-NH2 /NHCHO leads to a transient…
A uniform Fermi level profile is typically assumed in the analysis of a gated graphene nanoribbon, whose Fermi level is actually nonuniform in the experimental measurements. Here, we show that the uniform Fermi level has to be downshifted when it is used to analyze a backgated graphene nanoribbon array (GNRA). The pla…
We report on the fabrication of a surface-enhanced Raman scattering (SERS) platform, comprised of a three-dimensional (3D) porous eggshell membrane (ESM) scaffold decorated with Ag nanoparticles (NPs). Both native and treated ESM were used, where the treated ESM pore size and fiber crossing density was controlled by t…
The experimental charge-density distribution in 2-methyl-1,3-cyclopentanedione in the crystal state was analyzed by synchrotron X-ray diffraction data collection at 0.33 Å resolution. The molecule in the crystal is in the enol form. The experimental electron density was refined using the Hansen-Coppens multipolar mode…
In this work, the influence of electrodes' distance upon the properties of amorphous silicon (a‐Si:H) deposited by plasma‐enhanced chemical vapor deposition method on both intrinsic and doped a‐Si:H films is investigated in terms of their electrical, optical, and structural characteristics. For this purpose, Fourier‐t…
Nowadays, in order to reach minimum production cost in machining operations, various optimization methods have been proposed. Since turning operation has different parameters affecting the workpiece quality, it was selected as a complicated manufacturing method in this paper. To reach sufficient quality, all influenci…
We have determined the magnetic structure of the intermetallic compound TmGa by high-resolution neutron powder diffraction and (169)Tm Mössbauer spectroscopy. This compound crystallizes in the orthorhombic (Cmcm) CrB-type structure and its magnetic structure is characterized by magnetic order of the Tm sublattice alon…
Abstract This paper describes a facile, template‐free synthesis of AgCl hierarchical structures by a gas–liquid interfacial method and the morphology of AgCl (microrods or film) can be conveniently varied or controlled by changing the solvents of AgNO3 without using any surfactants. The AgCl composites were then photo…
In this paper, the authors performed a reactive ion etch of a 4H-SiC substrate with a gas mixture of NF3, HBr, and O2, resulting in a microtrenching-free etch. The etch rate was 107.8 nm/min, and the selectivity over the oxide hard mask was ∼3.85. Cross-sectional scanning electron microscopy showed no microtrenching c…
New materials and designs for neural implants are typically tested separately, with a demonstration of performance but without reference to other implant characteristics. This precludes a rational selection of a particular implant as optimal for a particular application and the development of new materials based on th…
We present the structural, electronic and superconducting properties of Li2B2 under pressure within the framework of the density functional theory. The structural parameters, electronic band structure, phonon frequency of the E2g phonon mode and superconducting critical temperature Tc were calculated for pressures up…
We observe that introducing a layer of reduced graphene oxide between electrochemically deposited gold nanoparticles and natural photosynthetic Fenna–Matthews–Olson (FMO) complex from green sulfur bacteria, results in an increase of the fluorescence emission of the FMO. This increase is not accompanied with any substa…
Extended X-ray absorption fine structure (EXAFS) spectroscopy is a powerful method to investigate the local structure of thin films. Here, we have studied EXAFS of MgB2 films grown on SiC buffer layers. Crystalline SiC buffer layers with different thickness of 70, 100, and 130 nm were deposited on the Al2O3 (0001) sub…
Multiarm star polymers with hyperbranched aromatic or aromatic-aliphatic cores and poly(ϵ-caprolactone) arms have been used as toughness modifiers in epoxy-anhydride formulations catalyzed by benzyldimethylamine. The curing process has been studied by dynamic scanning calorimetry, demonstrating little influence of the…
Lysine-free ubiquitin (K0-Ub) is commonly used to study the ubiquitin-signaling pathway, where it is assumed to have the same structure and function as wild-type ubiquitin (wt-Ub). However, the K0-Ub (15) N heteronuclear single quantum correlation NMR spectrum differs significantly from wt-Ub and the melting temperatu…
Smart multifunctional polymeric nanocarriers able to respond to physicochemical changes in their environment or to external stimuli represent a new paradigm in the field of pharmaceutical formulations for controlled drug delivery. The introductory part of the present review deals with this new concept and presents the…
In the present study, sulfonated polysulfone (SPSU (T)) was prepared from PSU using trimethyl silyl chlorosulfonate as a sulfonating agent. Volumetric analytic studies revealed 58% degree of sulfonation and 1.15 meq g −1 ion-exchange capacity of SPSU (T). Fourier transform infrared spectra also confirmed the occurrenc…