Materials Literature
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Ordered ZnFe 2 O 4 nanotube arrays with the average outer diameter of 100 nm were prepared in porous anodic aluminum oxide template using an improved sol-gel approach. The morphology was studied by transmission electron and field emission scanning electron microscope. X-ray diffraction result shows that the nanotubes…
Durchlässige Medizin: Poröse antigenbeladene abbaubare Polyelektrolytmikrokügelchen werden auf einfache Weise hergestellt und zeichnen sich durch hohe Verkapselungseffizienzen und eine effiziente Internalisierung durch antigenpräsentierende Zellen aus. Mögliche Anwendungen dieser mehrlagigen Kapseln finden sich im Gen…
Abstract Conducting properties of several polymers after low‐energy ion irradiation were investigated. The enhancement of conductance induced by the ions is discussed in terms of graphitization. Field effect transistors (FET) on the graphitized polymer surfaces were studied. We found that the field effect mobility dep…
Einzelmolekül-Fluoreszenzsonde: Über die Bildung der stark fluoreszierenden 4-NHOH-Form eines 3,4-dinitrophenylsubstituierten Bor-Dipyrromethan-Farbstoff wird der Elektronentransfer an einzelnen TiO2-Partikeln untersucht (siehe Bild; B gelb, C grau, F grün, H weiß, O rot). Kinetische und optische Analysen der Fluoresz…
ZnO quantum dots (QDs) with diameter around 6 nm were grown by a catalyst-free metalorganic chemical vapor deposition method and applied as electron field emitters. The Ga doping resulted in a considerable improvement of the field emission properties. Macroscopic field emission measurements revealed that the Ga-doped…
We present higher order conductivity spectra ${\ensuremath{\sigma}}_{3}^{\ensuremath{'}}(\ensuremath{\nu})$ of different ion conducting glasses and glass ceramics, which were taken over broad frequency ranges and at different temperatures. The ${\ensuremath{\sigma}}_{3}^{\ensuremath{'}}(\ensuremath{\nu})$ spectra are…
The results of X-ray diffraction, scanning electron microscopy, and dielectric measurements performed for polycrystalline Ba(Ti1−x Zr x )O3 are presented. Data from these measurements show a change of the type of paraelectric–ferroelectric (PE–FE) phase transition (PT) from sharp PT (x < 0.10), through diffuse phase t…
We prepared a rod-like molecule, 4-[4-(7-hydroxyheptyloxy)phenyl]-1-(4-hexylphenyl)-2,3-difluorobenzene, and investigated its physical properties using polarized optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). The compound was found to exhibit nematic, smectic A, and sme…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation K. Mohan Kant, V. Esposito, N. Pryds; Enhanced conductivity in pulsed laser deposited Ce0.9Gd0.1O…
We report a novel approach for the design of switchable surfaces using hydrophobic wax films with incorporated hydrophilic particles. It was found that native and 3-aminopropyltriethoxysilane-modified 200 nm large silica particles almost completely immerse in wax after annealing in dry environment above wax melting po…
Abstract Chemically modified graphene was synthesized by chemical vapour deposition (CVD) with ammonia gas introduced during the CVD process. The use of two different metal catalyst films [nickel (Ni) or copper (Cu)] results in distinctly different forms of structural defects in the honeycomb lattice of graphene under…
Zinc-porphyrin-appended norbornene derivative 6, the corresponding dimer 7, coherently aligned single-stranded polynorbornene 5, and zinc-porphyrin-linked double-stranded polymeric ladderphane 3 have been used for complexation with 1,4-diazabicyclo[2.2.2]octane (DABCO) to generate an array of porphyrin-DABCO supramole…
We report the detailed investigations of the magnetic properties, electronic transport, and specific heat in Zn-doped antiperovskite compounds Ga1−xZnxCMn3. Magnetic measurements indicate the metastability of the antiferromagnetic (AFM)–ferromagnetic intermediate (FI) phase transition and the coexistence of different…
Abstract Several technological approaches of applying photoresistive polymer for patterning the diamond seeding layer while minimizing damage of substrate surface is reported. Reactive ion etching (i.e., dry process) and wet photolithographical processing using two polymer layers are compared and combined as treatment…
The thermoelectric properties of single-quantum-dot (QD) devices have been studied theoretically taking into account the electron-phonon coupling in the QD. The thermoelectric transport coefficients and the thermoelectric efficiency have been calculated in the sequential tunneling regime. It is shown that the thermoel…
The preparation of AcA-stabilized Ag nanoparticles and its application to make highly conductive thin films are reported. The AcA-stabilized Ag nanoparticles were prepared through a ligand exchange of original oleylamine (OLA)-coated Ag nanoparticles with acrylic acid (AcA), which acted as both an antisolvent and a mo…
Abstract The bulk and shear moduli of dense polycrystalline oxygen‐bearing c‐Zr 3 N 4 were determined to be B 0 = 217(20) GPa and G 0 = 163(9) GPa, respectively, using laser ultrasonic technique combined with a numerical analysis of the sample porosity. While the obtained B 0 is in excellent agreement with the earlier…
Photoluminescent nanostructured semiconductor/metal systems consisting of silicon nanocrystals and gold nanoparticles are obtained by gold-catalyzed chemical etching. The interplay between silicon and gold nanostructures is investigated by photoluminescence spectroscopy upon continuous and pulsed excitation, both at r…
We describe the preparation of fluorinated microspheres by precipitation polymerization and their use to fabricate superhydrophobic surfaces. For that purpose, two different approaches have been employed. In the first approach, a fluorinated monomer (either 4-fluorostyrene or 2,3,4,5,6-pentafluorostyrene) was added to…
Abstract In this work, density functional theory calculations on the structural, mechanical, and lattice dynamical properties of Re 2 C within ReB 2 ‐type structure are reported. The generalized gradient approximation has been used for modeling exchange–correlation effects. We have predicted the lattice constants, bul…