Materials Literature
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Electrodeposition of SmCo in aqueous solution has been studied using a Hull cell. Different concentrations of cobalt ion in the electrolyte, addition of supporting electrolyte and different deposition time have been tested. High samarium contents and thicknesses have been obtained: up to 50 % of Sm in the deposit and…
Raman spectral imaging has become a more and more popular technique in biological studies because it can extract chemical information from living cells in a label-free manner. One of the most challenging issues in the label-free Raman imaging of biological samples is to increase the molecular specificity in the spectr…
Plasmonic emissions generated by excitation of an organic layer on a metal grating structure are demonstrated. The emissions correspond to the resonant condition of surface plasmon (SP) modes on the Alq(3)/Au interface, and the grating structure is coupled to the Au/air interface to provide light emissions. Experiment…
A new carbazole‐based electron accepting unit, 5‐(2,7‐dibromo‐9H‐carbazol‐9‐yl)benzo[a]phenazine (CBP), was newly designed and synthesized as the acceptor part of donor‐acceptor type low band‐gap polymers for polymer solar cells. The CBP was copolymerized with electron donating monomers such as benzo[1,2‐b:4,5‐b′]dith…
Purpose The purpose of this paper is to show that there are some underlying principles of granular media that can be derived from statistical mechanics and that could be useful when considered in the context of computer simulations. Design/methodology/approach The fundamentals of statistical mechanics are presented an…
In this study, a novel carbon paste electrode (CPE) was prepared using the salt form of polyaniline (pani)-silicon dioxide composite that is sensitive to choline. Choline oxidase (ChO) enzyme was immobilized to modified carbon paste electrode (MCPE) by cross-linking with glutaraldehyde. Determination of choline was ca…
Absorbance modulation is an approach that enables the localization of light to deep sub-wavelength dimensions by the use of photochromic materials. In this article, we demonstrate the application of absorbance modulation on a transparent (quartz) substrate, which enables patterning of isolated lines of width 60 nm for…
Photodissociation dynamics of methyl iodide (CH3I) adsorbed on both amorphous solid water (ASW) and porous amorphous solid water (PASW) has been investigated. The ejected ground-state I((2)P3∕2) and excited-state I((2)P1∕2) photofragments produced by 260- and 290-nm photons were detected using laser resonance-enhanced…
The study was undertaken to formulate and evaluate PEGylated-mucin matrices-based solid microparticles for oral administration of metformin hydrochloride (MTH). PEGylated-mucin matrices formulated with PEG-2000 and Mucin were used to prepare metformin-loaded PEGylated-mucin using solvent interaction method. Characteri…
The major requirements for pure fusion tokamak reactors and tokamak-based fusion neutron sources (FNS) are analyzed together with possible paths from the present-day tokamak towards the FNS tokamak. The FNS are of interest for traditional fission reactors as a method of waste management by burning of long-lived transu…
The spin structure and spin dynamics in the extended kagome frustrated antiferromagnet YBaCo${}_{4}$O${}_{7}$ have been investigated using zero field and low applied field ${}^{59}$Co NMR. The YBaCo${}_{4}$O${}_{7}$ lattice is made up of bipyramid Co-ion units that form alternating planes of edge-sharing spin triangle…
Amphoteric terpolymers composed of acrylamide, 2-methylacryloylxyethyl trimethyl ammonium chloride, and 2-acrylamido-2-methyl-1-propane sulfonate were prepared via free-radical polymerization in aqueous solution of ammonium sulfate (AS), using poly(2-methylacryloylxyethyl trimethyl ammonium chloride) as stabilizer to…
Abstract The plasma polymerization of two fluorocarbon compounds (octafluorocyclobutane (c‐C4F8) and octafluoropropane (C3F8)) using a non‐thermal atmospheric pressure microplasma jet is being compared. The source is operated with argon as working gas at a flow rate of 6 slm and 10–100 sccm admixtures of the respectiv…
Magnetic nanoparticle hyperthermia (mNHP) is regarded as a promising minimally invasive procedure. These nanoparticles generate heat when exposed to alternating magnetic fields (AMFs) and thus have shown a potential for selective delivery of heat to a target such as a cancer cell. Despite the great promise however, su…
We discover through first-principles calculations a new type of nanoporous carbon network structure formed out of small diameter nanotubes that features unique sp 2 -sp 3 bonding hybridizations and highly ordered 1-D channels for Li-ion diffusion. Unlike other graphitic materials that are primarily bonded by intertube…
Thioesterase activity is typically required for the release of products from polyketide synthase enzymes, but no such enzyme has been characterized in deep-sea bacteria associated with the production of polyunsaturated fatty acids. In this work, we have expressed and purified the Orf6 thioesterase from Photobacterium…
Purpose The purpose of this paper is to use the discrete element method (DEM) to model the fracture behaviour of brittle materials in 2D. Design/methodology/approach The material consists of a set of particles in contact with a close‐packed structure. It allows the derivation of an expression for the stress intensity…
Abstract Single polymer techniques are a powerful set of molecular‐level tools that enable the direct observation of polymer chain dynamics under highly non‐equilibrium conditions. In this way, single polymer methods have been used to uncover fundamentally new information regarding the static and dynamic properties of…
Several [Fe(II)2(N-EtHPTB)(μ-O2X)](2+) complexes (1·O2X) have been synthesized, where N-EtHPTB is the anion of N,N,N'N'-tetrakis(2-benzimidazolylmethyl)-2-hydroxy-1,3-diaminopropane and O2X is an oxyanion bridge. Crystal structures reveal five-coordinate (μ-alkoxo)diiron(II) cores. These diiron(II) complexes react wit…
A method for fabricating nanocrescent structures is presented based on a combination of colloidal lithography and parallel imprinting. In this process, non-close-packed colloidal spheres were prepared by a simple lift-up soft lithography technique, and subsequently the individual particles were used as shadow masks to…