Materials Literature
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Adsorption of rare-earth (RE) adatoms (Nd, Gd, Eu, and Yb) on graphene was studied by first-principles calculations based on the density-functional theory. The calculations show that the hollow site of graphene is the energetically favorable adsorption site for all the RE adatoms studied. The adsorption energies and d…
This paper attempts to quantify the potential risks posed by engineered nanomaterials (ENMs) to the aquatic and terrestrial ecosystems from cosmetic-based nanoproducts. The predicted environmental concentrations (PEC) were modelled for the silver (nAg) and titanium dioxide (nTiO(2)) nanoparticles embedded in cosmetic…
Two-dimensional (2D) polyacrylic acid (PAA) nano-nets that comprise interlinked ultrathin nanowires with diameters of 10-30 nm are successfully prepared by a facile electro-netting process. Nano-nets feature a clear geometric characteristic with ideal and weighted Steiner networks due to the rapid phase separation pro…
Incorporation of urea molecules into the magnetic system Mn II -[Nb IV (CN) 8 ] results in formation of two magnetic polymorphs {[Mn II (H 2 O)(urea) 2 ] 2 [Nb IV (CN) 8 ]} n chiral α and centric β crystallizing in space groups P 4 1 and P 1̅, respectively. Both polymorphs exhibit extremely similar structures and are…
Superhydrophobic aluminum surfaces with excellent corrosion resistance were successfully prepared by electrospinning of a novel fluorinated diblock copolymer solution. Micro- and nanostructuration of the diblock copolymer coating was obtained by electrospinning which proved to be an easy and cheap electrospinning tech…
There remains a great need for vascular substitutes for small-diameter applications. The use of an elastomeric biodegradable material, enabling acute antithrombogenicity and long-term in vivo remodeling, could be beneficial for this purpose. Conduits (1.3 mm internal diameter) were obtained by electrospinning biodegra…
In this paper, we present a new method to realize anisotropy by restricting a droplet on an unstructured Si hydrophobic domain between two superhydrophobic strips fabricated by femtosecond laser. The water contact angles and corresponding water baseline length were investigated. The results showed that anisotropy woul…
Traumatic injuries can interrupt muscle contraction by damaging the skeletal muscle and/or the peripheral nerves. The healing process results in scar tissue formation that impedes muscle function. Electrospinning and metal nanoparticles (Nps) can create a scaffold that will trigger muscle cell elongation, orientation,…
We present composite plasmonic nanostructures designed to achieve cascaded enhancement of electromagnetic fields at optical frequencies. Our structures were made with the help of electron-beam lithography and comprise a set of metallic nanodisks placed one above another. The optical properties of reproducible arrays o…
We have measured the complex dynamical conductivity, $\ensuremath{\sigma}={\ensuremath{\sigma}}_{1}+i{\ensuremath{\sigma}}_{2}$, of superconducting $\text{Ba}{({\text{Fe}}_{0.9}{\text{Co}}_{0.1})}_{2}{\text{As}}_{2}$ $({T}_{c}=22\text{ }\text{K})$ at terahertz frequencies and temperatures 2--30 K. In the frequency dep…
Das Anbringen von Collagen (Col) an Siliciumoxid-Nanopartikel (MSNs) über eine Disulfidbrücke und die anschließende Einführung von Lactobionsäure (LA) als zielführende Einheit ergaben ein redoxresponsives System für den zellspezifischen intrazellulären Wirkstoff-Transport und die effiziente Endozytose (siehe Bild). Di…
Heteronanostrukturierte Photoelektroden wurden durch Abscheidung von WO3-Schichten hergestellt und mit einem O2-entwickelnden Mangan-Katalysator stabilisiert. So präparierte Elektroden absorbieren Photonen unter Bildung von Elektronen und Löchern, deren Trennung durch das elektrische Feld des Halbleiters unterstützt w…
Supramolecular assembly and macroscopic properties of a series of bis-(trialkoxybenzamide)-functionalized naphthalene-tetracarboxylicacid-diimide (NDI) chromophores have been studied. The number of methylene units (0, 2, 3, 4; NDI-0, NDI-2, NDI-3, NDI-4, respectively) in between the NDI chromophore and the amide funct…
Reaction of the high-magnetic anisotropy building unit [ReCl(4)(CN)(2)](2-) with [Cu(MeCN)(6)](2+) and hydrotris(pyrazol-1-yl)borate (Tp(-)) affords the zigzag chain compound (Bu(4)N)[TpCuReCl(4)(CN)(2)]. Dc magnetic susceptibility measurements reveal the presence of ferromagnetic exchange coupling between Re(IV) and…
The synthesis of newly designed photochromic dithienylethene-containing ethynylthiophene and ethynylthieno[3,2-b]thiophene has been described, and their incorporation as versatile ligands into the platinum(II) phosphine system was demonstrated. All platinum(II) complexes have been successfully characterized by (1)H an…
A first-principles approach is used to establish that substitutional phosphorus atoms within carbon nanotubes strongly modify the chemical properties of the surface, thus creating highly localized sites with specific affinity towards acceptor molecules. Phosphorus-nitrogen co-dopants within the tubes have a similar ef…
In this study, hydrogels were synthesized from 2-acrylamido-2-methyl-1-propansulfonic acid (AMPS) via a photo polymerization technique. Approximately 100 nm Ni metal nanoparticles were generated in situ inside these p(AMPS) hydrogel networks and used as a catalyst in hydrogen production by hydrolysis of sodium boron h…
A new method to produce hyperbranched Co(2)P nanocrystals that are uniform in size, shape, and symmetry was developed. In this reaction tri-n-octylphosphine oxide (TOPO) was used as both a solvent and a phosphorus source. The reaction exhibits a novel monomer-saturation-dependent tunability between Co metal nanopartic…
The interaction of vacancies and hydrogen in an fcc iron bulk crystal was studied combining thermodynamic concepts with ab initio calculations and considering various magnetic structures. We show that up to six H atoms can be trapped by a monovacancy. All of the studied point defects (single vacancy, H in interstitial…
The complex shear modulus of solid $^4$He exhibits an anomaly in the same temperature region where torsion oscillators show a change in period. We propose that the observed stiffening of the shear modulus with decreasing temperature can be well described by a viscoelastic component that possesses an increasing relaxat…