Materials Literature
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Hypocrellin B (HB), a naturally occurring photosensitizer, has been extensively and intensively studied as a promising photodynamic therapy (PDT) agent. In this work, three new oxovanadium(IV) complexes were designed and synthesized with HB as a bridging ligand and phen (1,10-phenanthroline, complex 1), tmp (3,4,7,8-t…
Through rigorous analysis of all possible oscillatory guided modes propagating in a dielectric cylindrical waveguide with anisotropic metamaterial cladding, we demonstrate that slow or even stopped electromagnetic wave (or light) can propagate in the waveguide with specially selected parameters of the metamaterial. We…
The interaction of low-order modes with photonic crystals (PhCs) has been a promising technique to increase light extraction efficiency (LEE) of LEDs. In this paper, numerical simulations based on the finite-difference time-domain method were carried out to explore different mechanisms that can effectively improve thi…
The influence of confinement on the ionic liquid crystal (ILC) [C(18)C(1)Im][OTf] is studied using differential scanning calorimetry (DSC), polarized optical microscopy (POM), and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The ILC studied is supported on Si-based powders and glasses with por…
Energy storage devices are necessary to address the issues associated with stochastic variation of generated power in a wind energy conversion system. This study explores the control and operational aspects of integrating a smart energy storage system (SESS) into a double-fed induction generator-based wind power syste…
We experimentally demonstrate angle-insensitive (i.e., isotropic) coloration of nanostructured metal surfaces by engineered light scattering from homogenized Pinwheel aperiodic arrays of gold nanoparticles deposited on gold substrates. In sharp contrast to the colorimetric responses of periodically nanopatterned surfa…
A dual-region modified electrode was designed and fabricated by means of partitioned electrodeposition of gold and platinum nanoparticles on an indium tin oxide (ITO) conductive glass for dual-component electrochemical detection. The two differently modified regions were assigned to detect two analytes, separately and…
Covalent chemisorption of a p-chloromethylphenyltrichlorosilane monolayer on silica substrates was achieved. A cone 5-pyrenoylamido-calix[5]arene bearing a 12-aminododecyl moiety at the lower rim was further covalently bonded, producing a 5-pyrenoylamido-calix[5]arene-based monolayer on silica. The surface chemical ch…
Carbon dioxide coordination and activation by niobium oxide molecules were studied by matrix isolation infrared spectroscopy. It was found that the niobium monoxide molecule reacted with carbon dioxide to form the niobium dioxide carbonyl complex NbO(2)(η(1)-CO) spontaneously on annealing in solid neon. The observatio…
We present spatial and dynamic information on the $s=1/2$ distorted kagome antiferromagnet volborthite, Cu${}_{3}$V${}_{2}$O${}_{7}$(OD)${}_{2}\ifmmode\cdot\else\textperiodcentered\fi{}2$D${}_{2}$O, obtained by polarized and inelastic neutron scattering. The instantaneous structure factor, $S(Q)$, is dominated by near…
Polyvinylidene fluoride (PVDF) was modified by CO2, N2 or N2/H2 plasmas, which permitted the attachment of short carboxyl or amino groups. A variation of the discharge parameters was performed, for their optimization, as well as for minimizing degradation in favour of acidic, amphiphilic or basic functionalization, re…
In this paper, we present a method for the evaluation of the signal-to-noise ratio in magnetic resonance imaging (MRI) coils loaded with resonant ring metamaterial lenses, in the presence of a conducting phantom resembling human tissue. The method accounts for the effects of the discrete and finite structure of the me…
The unoccupied electronic structure of C${}_{60}$ layers on Ag(111) was investigated with two-photon photoemission (2PPE) and scanning tunneling spectroscopy (STS). The focus, in addition to providing unoccupied level assignments for C${}_{60}$ monolayers, is on identifying signatures of C${}_{60}$ superatom molecular…
Traditionally, a large number of plants are used for treatment of inflammation and wounds. In Asian and African countries Fagonia schweinfurthii (Hadidi) (F. Zygophyllaceae) and the closely related herb, such as Fagonia arabica are traditionally used for treatment of inflammation, open wounds, boils, skin eruptions, a…
YBCO films grown by the trifluoroacetate (TFA) method with increasing number of BaZrO3 (BZO) nanoparticles have been measured by in-field angular transport measurements to investigate changes in the pinning landscape. The isotropic and anisotropic contributions to the critical current density, Jc(H), with the magnetic…
A new class of macrobicyclic azacryptand containing dipyrrolylmethane subunits with nitrogen bridgeheads was synthesized by the Mannich reaction of the dipyrrolylmethane in the presence of aqueous ammonia. The azacryptand exhibits a staggered conformation in the solid state, but is in a dynamic equilibrium with the ec…
We have studied the effect of chain topology on the structural properties and diffusion of polymers in a dilute solution in a good solvent. Specifically, we have used three different simulation techniques to compare the chain size and diffusion coefficient of linear and ring polymers in solution. The polymer chain is…
Molecular dynamics simulations combining many microsecond trajectories have recently predicted that a very fast folding protein like lambda repressor fragment λ(6-85) D14A could have a slow millisecond kinetic phase. We investigated this possibility by detecting temperature-jump relaxation to 5 ms. While λ(6-85) D14A…
In this paper, the effect of the Casimir attraction on the torsion/bending coupled pull-in instability of an electrostatic nano-actuator has been investigated for the first time. The governing equation of the actuator is derived and the instability parameters of the nano-actuator have been computed as a function of th…
Two-component supramolecular networks have been constructed with a symmetric triphenylene derivative with three carboxyl groups (sym-TTT) and melamine. Two kinds of hydrogen bonds with different strength are involved in the multi-component self-assembly, one is H-bond between carboxyl group of sym-TTT and melamine, th…