Materials Literature
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Abstract Recent experiments have shown that vacancy clusters are common defects in all types of monocrystalline brown diamond. This is believed to be due to an enhanced stability of the bounding 〈111〉 or 〈110〉 surfaces, arising from the formation of π‐bonded chains. These chains lead to broad bands of gap states with…
We discuss equilibrium properties of classical fluids confined to nanoscopic volumes by solid substrates. The substrates themselves are endowed with wettable chemical patterns of variable symmetry. We develop a thermodynamic description suitable for these highly anisotropic systems. Based upon a combination of Monte C…
Novel bulky esters of cellulose were synthesized homogeneously, applying the solvent systems DMA/LiCl or DMSO/TBAF, by conversion of the biopolymer with aryl polyester dendrons. The carboxylic acid moieties were efficiently activated in situ with CDI or the acid chloride was applied. Cellulose esters with DS values of…
In this research, the thermodynamics of H2 solution and hydride formation in a series of disordered Pd-Ag alloys has been determined using both reaction calorimetry and equilibrium PH2-composition-T data. Trends of DeltaHH and DeltaSH with both H and Ag concentration have been determined. For the Pd0.76Ag0.24 alloy, w…
We investigated systematically the structure and growth of monolayers of physisorbed polybutadiene (PB) starlike polymers on freshly cleaved mica after solvent evaporation using atomic force microscopy (AFM). We observed a strong dependence of the evolution of the average island height and surface coverage with increa…
Abstract A novel series of biaryl‐type, meso , meso ‐linked and planar, triply fused diporphyrin derivatives was prepared and fully characterized together with the corresponding monoporphyrin control compounds. They feature peripheral meso ‐3‐cyanophenyl and meso ‐3,5‐cyanophenyl groups, which have previously been sho…
To develop biocompatible sol-gel silica matrix for the encapsulation of biomolecules or drugs, a novel water-soluble silica precursor, tetrakis(2-hydroxyethyl)orthosilicates (THEOS), was used in combination with a water-soluble polysaccharide derivative, hydroxypropyl guar gum (HPGG). We found that the introduction of…
Abstract Detailed data about deoxyribonucleic acid (DNA) attachment, arrangement, density and functionality on mono‐crystalline diamond surfaces are obtained by direct measurements in electrolytic solutions using fluorescence microscopy and atomic force microscopy in various regimes (oscillating, contact, phase, and s…
Abstract A method of patterning large arrays of organic single crystals is reported. Using single‐walled carbon nanotube (SWNT) bundles as patterned templates, several organic semiconductor materials were successfully patterned, including p‐type pentacene, tetracene, sexiphenylene, and sexithiophene, as well as n‐type…
A series of symmetric styrene− (S−) cis -isoprene (I) multiblock copolymers of (SIS) p -type ( p = 1, 2, 3, and 5 corresponding to tri-, penta-, hepta-, and undecablock) was synthesized with an anion-coupling method and their rheological and dielectric behavior was examined in n -tetradecane (C14), a solvent dissolvin…
Large-scale, well-aligned, and oriented wurtzite ZnS nanobelt arrays have been synthesized by a simple template-free solvothermal reaction and subsequent heat-treatment process. The ZnS nanobelts grow along the [0001] direction perpendicularly on a zinc substrate, which have a thickness of about 30 nm, widths of sever…
We have identified a denitrase activity in macrophages that is upregulated following macrophage activation, which is shown by mass spectrometry to recognize nitrotyrosines in the calcium signaling protein calmodulin (CaM). The denitrase activity converts nitrotyrosines to their native tyrosine structure without the fo…
Controlled movement of short electrospun fluorescent fibers has been accomplished by electrospinning of anthracene-modified PMMA loaded with superparamagnetic cobalt nanoparticles. Subsequently, composite fibers were mechanically cut, dispersed in water and moved under the influence of an external ferromagnet.
Abstract A novel ferrite nonreciprocal left‐handed (LH) transmission line is presented. The proposed structure is composed of a coplanar waveguide over a ferrite substrate, horizontally magnetized and periodically loaded with only shunt inductors. The line has a nonreciprocal LH propagation with transmission level bet…
The rapid, solvent-less, straightforward reactions under autogenic pressure at elevated temperature (RAPET) approach is explored for the fabrication of core−shell nanomaterials. Carbon-encapsulated ZnS and ZnSe nanoparticles are synthesized by a one-step thermal decomposition of diethyl zinc in the presence of either…
Abstract A new representation of the coupling coefficient of resonators has been obtained by the authors using the coupled mode theory. In this expression, the coupling coefficient is given by an overlap integral of the electric field and the magnetic field. This expression is extremely useful for explanation of the p…
Carboxyl-functionalized latex particles can be incorporated into zinc oxide crystals growing from an aqueous medium, giving zinc oxide−latex hybrid materials. The intracrystalline polymer particles do not disturb the long-range order of the zinc oxide host. This has been investigated by X-ray diffraction (XRD) and vib…
The biological response of human microvascular endothelial cells (HMEC-1) seeded on Si-DLC films and on control surfaces was evaluated in terms of initial cell enhancement, growth, and cytotoxicity. The microstructure of the films was characterised by Raman spectroscopy and X-ray photoelectron spectroscopy. The effect…
The dynamics of early stage of terrace formation in thin supported films of cylinder forming triblock copolymers was studied both theoretically using self-consistent-field theory (DSCFT) and experimentally by in-situ scanning force microscopy (SFM). In experiment, an initially flat film of incommensurable thickness wa…
C3-symmetrical molecules are described which consists of a 1,3,5-benzenetricarboxamide core extended with dipeptide fragments bearing peripheral mesogenic groups. Small structural modifications in the dipeptide fragment have been performed to demonstrate their influence on the stability of the stacks and on the order…