Materials Literature
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METHODOLOGY DFT-Periodic Functional Theory Car-Parinello Dynamics Hartee-Fock Correlations Multiscale Coarse Graining Approaches in Molecular Dynamics Molecular Dynamics, Diffusion Reactive Force Fields Equilibrium Monte Carlo Methods, Zeolites Kinetic Monte Carlo CATALYSIS AND MATERIALS SCIENCE APPLICATIONS NMR Metho…
An increase in the degree of chemical compatibility between drug and polymeric structure in the core has been shown to raise the encapsulation efficiency and lower the rate of drug release from polymeric micelles. In this study, to achieve an optimized polymeric micellar delivery system for the solubilization and cont…
Novel chitosan derivatives carrying linoleic acid (LA) as hydrophobic moieties and poly(beta-malic acid) (PMLA) as hydrophilic moieties (LA/PMLA double grafted chitosan, LMC) were synthesized. It self-assembled into nanoparticles of 190-350 nm in water, which carried negative surface charges in physiological pH. The c…
Abstract Responsive supramolekulare Gele wurden aus vierarmigem Poly(ε‐caprolacton) mit Kronenether‐Endgruppen (PCL–DB24C8) und zweiarmigem Poly(ε‐caprolacton) mit Dibenzylammonium‐Endgruppen (PCL–DBAS) aufgebaut (siehe Schema), wobei sich die Bildung von Pseudorotaxanstrukturen aus Kronenether‐ und Ammoniumeinheiten…
Abstract A natural polyol was obtained from tung oil (TO) to be further used in the formulation of rigid polyurethane polymers. The synthesis of the polyol was carried out in two steps: first hydroxylation of the double bonds in the fatty acid chains of the unsaturated oil and then, alcoholysis of the hydroxylated oil…
It is clear that nanofibrous structures can be used as tools for many applications. It is already known that electrospinning is a highly versatile method of producing nanofibres and recent developments in the technique of electrospinning have led to the development of aligned nanofibres and biphasic, core-sheath fibre…
We present the first Raman scattering measurements on nanoparticulate vanadium dioxide (VO(2)), as well as the first observations of the temperature-induced phase transition in individual VO(2) nanoparticles (NPs). We compare the Raman response of two VO(2) NPs and a companion VO(2) film undergoing their monoclinic-te…
Best of both worlds: Reduction of an organometallic Co precursor on preformed CdSe nanorods yields two distinct semiconducting-magnetic heterostructures (see picture). The selective growth of Co on the tips of CdSe first gives nanosphere-nanorod dimers, which evolve into nanorod-nanorod structures. In the hybrid objec…
Palladium (Pd) nanoparticles exhibit broad optical resonances that have been assigned to so-called localized surface plasmons (LSPs). The resonance's energy varies with particle shape in a similar fashion as is well known for LSPs in gold and silver nanoparticles, but the line-shape is always anomalously asymmetric. W…
We report the fabrication and optical characterization of individual ZnO vertical nanowire laser cavities. Dilute nanowire arrays with interwire spacing >10 microm were produced by a modified chemical vapor transport (CVT) method yielding an ideal platform for single nanowire imaging and spectroscopy. Lasing character…
Hydrogen adsorption properties of two different carbon materials (superactivated carbon, AX-21, and graphite oxide) doped with Pd nanoparticles have been studied. The effect of surface oxygen groups in AX-21 on hydrogen storage was investigated, and the results showed Pd supported on oxygen-modified AX-21 (Pd/AX-21-O)…
Abstract Three new layered rare‐earth hydroxides (LRHs), RE(OH) 2.5 (NO 3 ) 0.5 · x H 2 O (RE = Gd, Eu, and Sm), have been prepared by a hydrothermal reaction. These materials correspond to the extended members of the RE 2 (OH) 5 NO 3 · n H 2 O (RE = the rare‐earth series) family. Although it has been suggested that t…
The development of the morphology in asymmetric polystyrene- block -poly(4-vinylpyridine) (PS- b -P4VP) thin films in tetrahydrofuran (THF) vapor, a selective solvent for majority PS block, as a function of time was investigated by scanning force microscopy (SFM) and grazing incidence small-angle X-ray scattering (GIS…
Cold high pressure densification (CHPD) is presented as a new way to substantially enhance the critical current density of in situ MgB2 wires at 4.2 and 20 K at fields between 5 and 14 T. The results on two binary MgB2 wires and an alloyed wire with 10 wt.% B4C are presented The strongest enhancement was measured at 2…
We have investigated the surface-enhanced Raman scattering (SERS) of chemically prepared single-crystal nanocubes and nanospheres of Ag with three different molecules to quantitatively understand the effect of sharp features on the SERS enhancement factor. Both experimental measurements and theoretical calculations co…
We show that a 2+1 dimensional discrete surface growth model exhibiting Kardar-Parisi-Zhang (KPZ) class scaling can be mapped onto a two dimensional conserved lattice gas model of directed dimers. In case of KPZ height anisotropy the dimers follow driven diffusive motion. We confirm by numerical simulations that the s…
The use of environmental scanning electron microscopy in biology is growing as more becomes understood about the advantages and limitations of the technique. These are discussed and we include new evidence about the effect of environmental scanning electron microscopy imaging on the viability of mammalian cells. We sh…
The double perovskite Sr2CrReO6 is an interesting material for spintronics, showing ferrimagnetism up to 635 K with a predicted high spin polarization of about 86%. We fabricated Sr2CrReO6 epitaxial films by pulsed laser deposition on (001)-oriented SrTiO3 substrates. Phase-pure films with optimum crystallographic and…
Nacre, commonly known as mother-of-pearl, is a remarkable biomineral that in red abalone consists of layers of 400-nm thick aragonite crystalline tablets confined by organic matrix sheets, with the $(001)$ crystal axes of the aragonite tablets oriented to within $\pm$ 12 degrees from the normal to the layer planes. Re…
Abstract Leicht, günstig, effizient : Co 3 O 4 ‐Nanostrukturen (siehe Bild) in mesoporösem Siliciumoxid sind die ersten nanometergroßen Mehrelektronenkatalysatoren mit einem Übergangsmetalloxid der ersten Periode, die Wasser unter Bildung von Sauerstoff effizient spalten. Die sehr große Oberfläche der Nanostabbündel t…