Materials Literature
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Extensive structural and magnetic analyses of Hf1−xCoxO2 thin films grown by molecular beam epitaxy are reported. Nearly cobalt cluster-free film with x=0.04–0.1 was obtained via 100°C growth, and Co ions are inferred to be located at interstitial site. Ferromagnetic behavior was observed up to 300K in both magnetizat…
Broadband Brillouin scattering of Sr0.61Ba0.39Nb2O6 uniaxial ferroelectric relaxors has been investigated. One broader central peak (CP) appeared at all temperatures and was ascribed to light-induced charge carriers, while the other narrower CP began to appear near the Burns temperature suggesting its origin from the…
Abstract By using a commercial β‐nucleating agent (TMB‐5) for polypropylene (PP), it was observed that high β‐crystal content in a compatibilized blend of polypropylene/polyamide‐6 (labeled as Blend‐03 in this work) can be achieved for samples prepared by compression moulding. As β‐PP possesses more superior impact st…
A new non-aggregating and electrochromic manganese(3+) phthalocyanine, (acetato)[2(3),9(10),16(17),23(24)-tetrakis(4-(1-naphthoxy-4-sulfonic acid sodium salt))phthalocyaninato]manganese(3+) [NhtMn(3+)PcL] (where Nht and L indicate naphthoxy-4-sulfonic acid sodium salt and acetate ion, respectively), was synthesized by…
The authors have demonstrated stimulated emission from polymer-based planar waveguide doped with Eu–Al nanoclusters under continuous-wave optical pumping. For the waveguide sample with a nanocluster concentration of 5.0wt%, amplified spontaneous emission was observed in the spectra of the light decoupled from the wave…
Abstract The cover picture of the current issue depicts a selection of luminescence colours of zinc oxide and relates to the Review Article by Claus Klingshirn (University of Karlsruhe) [1]. Zinc oxide is a wide band gap semiconductor which shows intrinsic luminescence in the blue and near‐UV spectral range as well as…
The velocity auto-correlation (VAC) function of liquid argon in the Green-Kubo formula decays quickly within 5 ps to give a well-defined diffusion coefficient because the velocity is the property of each individual particle, whereas the stress (SAC) and heat-flux auto-correlation (HFAC) functions for shear viscosity a…
This work investigates the photoluminescence properties of Zn1−xMgxO–ZnO single quantum wells, which have been fabricated by molecular-beam epitaxy. With increasing temperature from 13to300K the single quantum well-related emission peaks exhibit an irregular S-shaped (redshift-blueshift-redshift) behavior, which is in…
The ageing quantification of ultracapacitors in cycle-life tests has been studied. Current profiles and the characteristics of the ultracapacitors used in hybrid and electric vehicle applications are specified and validated. With these profiles, significant self-heating occurs but without exceeding the manufacturers&a…
Magnetstreifen: Magnetische {Mn3IIIO}-Einheiten wurden in zweierlei Weise – mit verbrückenden Formiat- oder Azidionen – entlang der magnetischen Vorzugsrichtung zu Ketten aufgereiht (siehe Bild). Die verstärkte gerichtete Anisotropie und Kopplung innerhalb der Ketten charakterisieren die Verbindungen als Einzelkettenm…
Abstract Novel self‐assembled nano/microstructured conducting PANICN was prepared by in situ intercalative emulsion polymerization of aniline in aqueous dispersion of clay using bifunctional amphiphilic dopant, 3‐pentadecyl phenol‐4‐sulphonic acid (PDPSA) derivable from renewable resource. X‐ray diffraction and scanni…
C F 4 -based plasma has been employed to in-flight etch silicon nanocrystals (Si-NCs) after they are synthesized by SiH4-based plasma. The authors find that the photoluminescence (PL) of Si-NCs blueshifts when they are etched, indicating the etching-induced size reduction of Si-NCs. It is demonstrated that the power o…
Abstract Monomethoxy poly(ethylene glycol)‐b‐poly( ε ‐caprolactone)(MPEG‐b‐PCL) diblock copolymers were synthesized via a ring‐opening polymerization. The polymeric nanoparticles prepared by precipitation/solvent evaporation exhibit a core–shell structure, characterized by dynamic light scattering (DLS), nuclear magne…
Insider: Bei der Bildung eines supramolekularen Hydrogels in einer Zelle entstehen Nanostrukturen (siehe Bild), die das Schicksal von Bakterien beeinflussen. Die enzymgesteuerte Selbstorganisation niedermolekularer Vorstufen könnte zur Regulierung zellulärer Prozesse, zum Verständnis der Zellfunktionen und zur Entwick…
Programmed cell death (apoptosis) is a genetically regulated process of cell elimination essential during development. During development, programmed cell death is involved in the specific shaping of organs, in the elimination of cells having achieved their program, and in regulating the number of cells to differentia…
Abstract This study examines textural inhomogeneity and variable chemical composition of Upper Jurassic glaucony in relation to small‐scale synsedimentary and postsedimentary authigenic processes controlled by the palaeonvironmental and palaeogeographical context. Four glaucony types with complex textural and composit…
A review is given of recent angle-resolved photoemission (ARPES) experiments and analyses on a series of layered charge density wave materials. Important aspects of ARPES are recalled in view of its capability for bulk band, Fermi surface and spectral function mapping despite its surface sensitivity. Discussed are TaS…
The chemical state of N in N-doped amorphous Ge2Sb2Te5 (a-GST) samples with 0–14.3Nat.% doping concentrations was investigated by high-resolution x-ray photoelectron spectroscopy (HRXPS) and Ge K-edge x-ray absorption spectroscopy (XAS). HRXPS showed negligible change in the Te 4d and Sb 4d core-level spectra. In the…
In this letter, the authors propose a practical and reliable approach—using deposited multiwalled carbon nanotubes (MWCNTs) as source and drain electrodes—for reducing the contact resistance (Rc) in pentacene-based bottom-contact thin-film transistors. The value of Rc of the devices was closely linked to the resultant…
Polycrystalline Ca 3− x Ag x Co 4 O 9 (0≤ x ≤0.3) samples were prepared by solid-state reaction and their thermo-transport properties were studied from 5 K to room temperature. With the substitution of Ag + for Ca 2+ , the internal chemical pressure induced by Ag + doping has a strong effect on the transport propertie…