Materials Literature
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Electrospinning of various polymers has been used to produce nanofibrous scaffolds that mimic the extracellular matrix and support cell attachment for the potential repair and engineering of nerve tissue. In the study reported here, an electrospun copolymer of l ‐lactide and ε ‐caprolactone (67:33 mol%) resulted in a…
The langasite-type crystals with 3d ions are considered as a class of multiferroics in which ferroelectricity can be induced by the magnetic ordering. In this paper, the high-pressure magnetic states of the langasite-type powdered sample Ba3TaFe3Si2O14 have been investigated in a diamond anvil cell by the nuclear forw…
We have prepared metal matrix composites of a pewter alloy filled with liquid-exfoliated Molybdenum Telluride (MoTe2) nano-platelets. The combination of MoTe2 and pewter was chosen due to their near-identical densities, thus reducing the scope for buoyancy-induced separation during melt mixing. The addition of nanofil…
To understand how fluorene-based polymers selectively extract specific semiconducting single-wall carbon nanotubes (SWCNTs), we compared the optical transitions of SWCNTs wrapped with poly(9,9-dioctylfluorene-alt-pyridine) (PFOPy), i.e., structure-selective polymers, with those wrapped with poly(9,9-di-n-dodecylfluore…
A series of polytitanate nanobelt supported lean-burn NOx trap catalysts Pt- x K 2 CO 3 /K 2 Ti 8 O 17 with different weight loading of K 2 CO 3 ( x = 0%, 5%, 15%, 20%, 25%, or 30%) were synthesized by successive impregnation. The nanobelt support K 2 Ti 8 O 17 displays a specific surface area as high as 302 m 2 /g, a…
We have used the ac magnetic susceptibility to investigate the vortex state in an optimally doped $p$-type Ba${}_{0.5}$K${}_{0.5}$Fe${}_{2}$As${}_{2}$ single crystal under various ac and dc fields. A peak effect is observed in the temperature dependence of the in-phase ac susceptibility, indicating an order-disorder t…
Abstract The analytical solution of the elastic-plastic response of a two-phase laminate microstructure subjected to periodic simple shear loading conditions is derived considering strain gradient and micromorphic plasticity models successively. One phase remains purely elastic, whereas the second one displays an isot…
Abstract Uniaxially drawn polylactide ( PLA ) films were prepared using various draw ratios (2, 3, 4 and 4.5) at a constant draw rate and temperature. It was confirmed that the conformational structure of the PLA films prepared using the uniaxial drawing process was composed of the α ′‐phase form. The conformational s…
Lightly unmasked: Large protein subdomains can be masked and photolytically released using aptamers with a suitable photocleavable linker. No structural knowledge of the protein site is needed. Thrombin Exosite I activity can be efficiently regulated with this approach (see scheme), allowing light-controlled activatio…
Two optically active phthalocyanine derivatives with eight peripheral chiral (S)-4'-(2-methylbutoxy)biphenyl moieties on the β-position of the phthalocyanine ring are synthesized. The circular dichroism (CD) spectra show signals in the Q absorption region for both compounds 1 and 2 in chloroform solution, indicating t…
The emission of electrons from the surface of a solid caused by a high electric field is called field emission (FE). Electron sources based on FE are used today in a wide range of applications, such as microwave traveling wave tubes, e-beam evaporators, mass spectrometers, flat panel of field emission displays (FEDs),…
Structure-activity relationship has been one of the main topics of research on catalysts all the time. Component and structure are the two moieties governing the performance of solid materials as catalysts. Multicomponent bismuth molybdates are well known catalysts for propene oxidation but pure crystalline phases of…
A detailed photoluminescence (PL) analysis and transmission electron microscopy studies on silicon nanocrystals (SNCs) are presented to probe the carrier recombination mechanism. There exist obvious distinctive phenomena in different sizes of SNCs. Clear evidence for the breakdown point of quantum confinement PL is co…
Thermoelectric properties of Bi-Sb-Te and Bi-Se-Te compounds with graded Ag doping profiles are reported. A junction structure with graded doping is formed in the Bi-Te based compounds through thermally driven Ag diffusion, which has demonstrated a greatly enhanced Seebeck coefficient when a thermal gradient is applie…
Temperature‐ and magnetic‐field‐dependent conduction properties of electron‐doped Ca 0.85 Pr 0.15 MnO 3 (CPMO) and Ca 0.85 La 0.15 MnO 3 (CLMO) manganites have been reported. The resistivity for both samples show robust insulating behavior with an inflection near the corresponding charge‐ordering temperatures ( T CO )…
Localized surface plasmons can modify linear optical responses of materials located in their vicinity. In particular, rare earth ions luminescence can be enhanced by gold nanoparticles. Luminescence exaltation is a complex phenomenon that depends on multiple parameters, a critical one being the coupling distance betwe…
The linear extension of the rigid, C(3v)-symmetrical carbon framework of tribenzotriquinacene (TBTQ) along its three wings is reported. The key step of the extension procedure consists of a Diels-Alder reaction of three ortho-quinodimethane units generated in situ at the triquinacene core. The use of 1,4-naphthoquinon…
A new class of aminothiazole based metallogels of mercury have been synthesized and characterized using various physico-chemical techniques. The coordination polymer of 2-amino-4-methylthiazole (1b) with Hg(OAc)2 demonstrated room temperature gelation of water along with thixotropic behaviour. The metallogels of 1a–Hg…
We present a novel methodology for dealing with quantum size effects (QSE) when calculating the energy per unit length and step–step interaction energy of atomic step defects on crystalline solid surfaces using atomistic slab models. We apply it to the TiO 2 rutile (110) surface using density functional theory (DFT) f…
We study structure formation in systems of classical particles in two dimensions with long-range attractive short-range repulsive two-body interactions and repulsive three-body interactions. Stripe, gossamer, and glass phases are found as a result of nonpairwise interaction.