Materials Literature
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In a recent sequence of papers, a parallel-plate ridge gap waveguide has been introduced, that consists of a metal ridge in a metamaterial magnetic conductor surface, covered by a metallic plate at a small height above it. The gap waveguide is relatively simple to manufacture, especially at millimetre and sub-millimet…
This work presents an in situ study of the adsorption/desorption behavior of ferrocene(Fc)-functionalized linear polymers on a gold surface covered with beta-cyclodextrin(beta-CD)-modified self-assembled monolayers (SAMs). The characterization of binary SAMs obtained with HS-(CH(2))(11)-EG(6)-N(3) and HS-(CH(2))(11)-E…
Coal tar bearing emulsions were used in the Netherlands as binder in anti-skid surfaces for runways because of their perfect adhesion and fuel resistance properties. They are however toxic and will not be allowed anymore after 2010. Therefore alternatives need to be developed. As one of the alternatives, two types of…
In this study, the use of dual-composite right–left-handed (D-CRLH) transmission lines is proposed for the design of diplexers. The D-CRLH diplexers present advantages over conventional diplexers such as smaller size (especially in the ultra high frequency band). The design procedure and the design equations are prese…
The synthesis and properties of synthetic DNA dumbbells having A-tract base pair domains consisting of 6−16 base pairs connected by perylenediimide (PDI) linkers are reported. The dumbbells were prepared in good yield by chemical ligation of nicked-dumbbell precursors having six or more A-T base pairs. The dumbbell st…
A Pt-NiCo nanomaterial has been synthesized for developing the sensitive electrochemical determination of biological thiols that include L-cysteine (CySH), homocysteine (HCySH), and gluthione (GSH) with high sensitivity and long-term stability, in which the Pt nanoparticles are well supported on amorphous NiCo nanofil…
New dual initiators, 3,3,5-trimethyl-5-chlorohexyl 2-bromopropionate (IB 2 BP) and 3,3,5-trimethyl-5-chlorohexyl 2-bromo-2-methylpropionate (IB 2 BMP), which contain initiating sites for both carbocationic polymerization and atom transfer radical polymerization (ATRP), were synthesized and used to create poly(isobutyl…
We theoretically predicted the existence of an anomalous optical transmittance dip, which must be observed for a metamaterial structure with two metallic slabs with cut-through slit arrays of a constant period d under a normal incident condition. By changing the relative lateral displacement l between the two slabs, t…
In this study we report on the solid-state dewetting of ultrathin Ni films on amorphous ${\text{SiO}}_{2}$. The dewetting process is monitored in situ using time resolved differential reflectometry (TRDR). The time resolved differential reflectivity signal during dewetting is found to exhibit a rich behavior, which is…
Abstract An easily prepared “turn‐on”‐type fluorescent chemosensor for mercury based on Rhodamine‐B, which exhibits high sensitivity and selectivity over other metal ions in aqueous systems, was obtained. The distinctive wavelengths in the UV/Vis absorption range can sense Hg2+, Cu2+, and Fe3+ separately. Furthermore,…
-Fe(001)/Mg/MgO/Fe- and -Fe(001)/Mg/MgO/Mg/Fe- magnetic tunnel junctions (MTJs) with Mg interlayers are studied by first-principles calculations. We find that the Mg interlayer is able to preserve the preferential transmission of the majority-spin states with ${\ensuremath{\Delta}}_{1}$ symmetry, which dominates the s…
Three new photoinduced electron donor-acceptor (D-A) systems are reported which juxtapose a Ru(II) excited-state donor with a bipyridinium acceptor via a conformationally active asymmetric aryl-substituted bipyridine ligand participating in the bridge between D and A. Across the series of complexes 1-3, steric bulk is…
Catalysis of alternating ROMP with (H(2)IMes)Cl(2)Ru=CHPh(OiPr), the second generation Hoveyda-Grubbs catalyst, provided an entirely cyclic alternating polymer. Conditions for the cyclic AROMP were used to prepare a polymer in which one of the repeat units bore a primary alkyl chloride that was used for further elabor…
Novel alternating copolymers composed of anthracene moiety and halostyrene unit were synthesized by ring-opening polymerization of cyclic monomers, 10-methylene-9,10-dihydroanthryl-9-spiro- p -chlorophenylcyclopropane and its bromo derivative. Reversible addition−fragmentation chain transfer and conventional free radi…
Abstract Feedstock logistics, as dictated by biomass physical properties, location, and distribution, as well as transportation infrastructure, were shown to be a primary determinant of the scale, location, and technology selection of any future biorefineries. The maximum capacity of both biochemical‐ and thermochemic…
Abstract Pyrene‐containing cyclometallated PtII complexes, with the pyrene moiety directly cyclometallated (Pt‐1) or connected to a 2‐phenylpyridine (ppy) ligand through a C–C (Pt‐2) or C≡C bond (Pt‐3), and a control complex with a phenyl group attached to the ppy ligand (Pt‐4) have been prepared. Room‐temperature dee…
This work investigates the gains realisable through the use of artificially structured materials, otherwise known as metamaterials, in the wide angle impedance matching (WAIM) of waveguide-fed phased-array antennas. The authors propose that the anisotropic properties of a metamaterial layer, when designed appropriatel…
Highly monodisperse poly(N-isopropylacrylamide), PNiPAM, microgels were prepared by the conventional radical polymerization of NiPAM in the presence of dimethylamino ethyl methacrylate (DMAEMA) monomers at various concentrations. The effect of DMAEMA on the polymerization of PNiPAM microgels was examined at constant i…
Abstract Photoconductive atomic force microscopy is employed to study the nanoscale morphology and optoelectronic properties of bulk heterojunction solar cells based on small molecules containing a benzofuran substituted diketopyrrolopyrrole ( DPP ) core (3,6‐bis(5‐(benzofuran‐2‐yl)thiophen‐2‐yl)‐2,5‐bis(2‐ethylhexyl…
Auxetic materials exhibit the unusual property of becoming fatter when uniaxially stretched and thinner when uniaxially compressed (i.e. they exhibit a negative Poisson ratio; NPR), a property that may result in various enhanced properties. The NPR is the result of the manner in which particular geometric features in…