Materials Literature
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Diamond-like carbon (DLC) film deposition on the interior surfaces of steel tubes was carried out by plasma source ion implantation. SUS304 austenitic-type stainless steel tubes with inner diameters of 9, 5, and 4 mm were used as substrate tubes. Acetylene was the working gas for the plasma that was generated by apply…
Heparin (HEP) and periodate-oxidized heparin (O-HEP) nanotubes were prepared by combining the template method with a layer-by-layer (LbL) technique. The tubular structure was obtained and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and confocal laser scanning microscopy…
HisB, encoded by open reading frame Rv1601, possesses enzymatic activity as an imidazoleglycerol-phosphate dehydratase in the histidine-biosynthetic pathway of Mycobacterium tuberculosis. A recombinant form of HisB was crystallized in three crystal forms: crystals grown using 20% PEG 1500 as a precipitant belonged to…
Winzige Mengen genügen: Ein hochgeordnetes mesoporöses Kohlenstoffmaterial (OMC) wurde mit einer Weichtemplatmethode synthetisiert und als Adsorbens für die hocheffiziente Extraktion endogener Peptide aus menschlichem Serum genutzt (siehe Schema). Dabei konnten 3402 verschiedene Peptide in nur 20 μL menschlichem Serum…
Elektrifizierend! Ein Bauelement aus Kohlenstoffnanoröhren, die von Poly(3-hexylthiophen) umhüllt und in Polydimethylsiloxan-Blättchen dispergiert sind, konvertiert Laserlicht effizient in thermische Energie und nachfolgend in Elektrizität. Der Konverter ist flexibel und äußerst kompakt (siehe Bild) und kann mit einem…
We have studied parametric amplification in dispersion-engineered As2S3 waveguides achieving a highest gain of over +35 dB using a pulsed pump. The gain is shown to involve an interaction between stimulated Raman scattering (SRS) and four-wave mixing (FWM). The gain was studied both experimentally and using com…
In this study, we demonstrated the asymmetric synthesis of L-tert-leucine from trimethylpyruvate using branchedchain aminotransferase (BCAT) from Escherichia coli in the presence of L-glutamate as an amino donor. Since BCAT was severely inhibited by 2-ketoglutarate, in order to overcome this here, we developed a BCAT/…
Abstract We report the radio‐frequency transmission properties and distributed elements of chemical vapour deposition (CVD)‐grown graphene monolayers with width variation using a coplanar waveguide electrode in the microwave region. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Abstract This article presents synthesis and mechanical characterization of carbon nanotube (CNT)‐reinforced syntactic foams. Following a dispersion approach (comprising ultrasonic, calendering, and vacuum centrifugal mixing), single‐ and multi‐walled functionalized CNTs (FCNTs) were incorporated into two foam composi…
The paper presents the first detailed mineralogical, structural, and crystal-chemical characteristics of the mixed-layer corrensite-chlorites from the glauconitic sandy-clayey rocks that make up the bottom (0.10 m) of a basal member (1.50 m) of the lower subformation of the Yusmastakh Formation (Riphean, Anabar Uplift…
Within the thermodynamic framework with internal variables, the classical Hamilton’s principle for elastic bodies is extended to inelastic bodies composed of materials whose free energy densities are point functions of internal variables, or the so‑termed Green-inelastic bodies, subject to finite deformation and non-c…
Abstract Stimulated Raman scattering (SRS) active crystals of Ca 2 ZnSi 2 O 7 (hardystonite) adopt a melilite‐type structure at temperatures above ca. 402 K, while at ambient conditions they show a two‐dimensionally incommensurate structure modulation. To study the influence of the incommensurability of the structure…
In the nanoscale assembly-based design of antithrombotic agents, poly-α,β-DL-aspartyl-L-arginine (MW: 20 741) was prepared from the thermal polycondensation of DL-aspartic acid and the amidation of polysuccimide with L-arginine. In the pH environments corresponding to the stomach (pH 1.2), intestinal tract (pH 7.6), b…
Abstract Reanalysis of the 197Au Mössbauer spectrum of Au25(SG)18− (SG: glutathionate) based on the structure determined by single-crystal XRD analysis gave a reasonable fit, demonstrating that 197Au Mössbauer spectroscopy is a powerful tool for predicting the structural motifs of thiolate-protected Au clusters.
Abstract Violet light‐emitting diode (LED) structures based on Cd‐alloyed zinc oxide (Zn 1− x Cd x O) nanorods (NRs)/p‐GaN heterojunction have been fabricated by epitaxial electrodeposition at low temperatures in an aqueous soft bath followed by a mild thermal annealing. The ultraviolet (UV) room‐temperature emission…
Abstract A new simple method was developed to fabricate porous polylactic acid (PLA) films coated directly on substrates. The PLA films with a controllable thickness were realized using a dip‐coating technique. The pore structure of the resulting porous PLA films was tailored by utilizing phase inversion process and t…
Abstract Crosslinked polyacrylonitrile (PAN) was synthesized with divinylbenzene as the crosslinker with an iron(III)‐mediated atom transfer radical polymerization method with activators regenerated by electron transfer. The polymerization exhibited first‐order kinetics with respect to the polymerization time. Hydroxy…
The authors have demonstrated large-area suspended graphene on GaN nanopillars predefined by nanosphere lithography and inductively coupled plasma etching. The graphene was successfully suspended over large areas without ripples and corrugations. Scanning electron microscopy, atomic force microscopy and micro-Raman sp…
The unsymmetrical distribution of the unpaired electron in the ground state of the DBTTFI(•-) radical anion (bi(6-n-butyl-5,7-dioxo-6,7-dihydro-5H-[1,3]dithiolo[4,5-f]isoindole-2-ylidene) is theoretically predicted using the M06-2X/6-31+G(d,p) level of calculations. The results are additionally confirmed by single poi…
Abstract Conductive fillers are often added to thermoplastic polymers to increase the resulting composite's electrical conductivity (EC) which would enable them to be used in electrostatic dissipative and semiconductive applications. The resulting composite also exhibits increased tensile modulus. The filler aspect ra…