Materials Literature
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Carbon nanotube (CNT) based sensors are often fabricated by dispersing CNTs into different types of polymer. In this paper, a prototype carbon nanotube (CNT) yarn strain sensor with excellent repeatability and stability for in situ structural health monitoring was developed. The CNT yarn was spun directly from CNT arr…
We present a model calculation, employing first-principles calculations as well as empirical data, which suggests that properly hole-doped bulk PbSe may show a Seebeck coefficient as high as $230\text{ }\ensuremath{\mu}\text{V}/\text{K}$, in a temperature regime in which the lattice thermal conductivity is rather smal…
Positiv und negativ in der Waage: Ein neuartiges Verhalten im Bereich katanionischer Systeme wurde in Lösungen von anionischen und kationischen Formen starrer, ungewöhnlicher Amphiphile beobachtet. Verdünnte wässrige Mischungen von anionischen und kationischen Gallensäure-Derivaten bilden katanionische Röhren, deren L…
Histidine functionalised CdS quantum dots (QDs) have been synthesised by sonochemical method. Transmission Electron Microscopy (TEM) observation shows that the histidine functionalised CdS QDs are well-defined, nearly spherical particles. The X-ray diffraction pattern indicates formation of cubic phase of CdS/histidin…
One-pot synthesis of novel chlorin-fused monospirooxindolopyrrolidines has been accomplished in good yield via a facile [3 + 2]-cycloaddition reaction of azomethine ylides, derived from isatin/N-benzylisatin and sarcosine, with various porphyrin derivatives as dipolarophiles.
Ultraschnelle Spinsonde: Photoangeregtes [Fe(bpy)3]2+ (bpy=2,2′-Bipyridin) zeigt kurzlebige Strukturänderungen, die einer Anregung in einen High-Spin-Zustand entsprechen. In diesem Zustand wurde der Spin von FeII durch spinsensitive ultraschnelle Röntgenemissionsspektroskopie mit harter Röntgenstrahlung zu S=2 bestimm…
Orientational ordering of a homogeneous mixture of uniaxial liquid crystalline (LC) molecules and magnetic nanoparticles (NPs) is studied using the Lebwohl-Lasher lattice model. We consider cases where NPs tend to be oriented perpendicularly to LC molecules due to elastic forces. We study domain-type configurations of…
The onset of matrix cracking due to thermal shock in a range of simple and multi-layer cross-ply laminates comprising a calcium aluminosilicate (CAS) matrix reinforced with Nicalon® fibres is investigated analytically. A comprehensive stress analysis under conditions of thermal shock, ignoring transient effects, is pe…
Enthalpy relaxation processes proceeding in ethylene glycol (EG) aqueous solutions [(EG)(x)(H(2)O)(1 - x)] within silica-gel nanopores were studied by adiabatic calorimetry. While the x = 0.25 solution within pores with diameter of 52 nm showed a glass transition at T(g) = 139 K, ageing of the solution at 160 K caused…
The two-orbital ${J}_{1}\text{\ensuremath{-}}{J}_{2}$ model that describes a square lattice of frustrated spin-1 iron atoms is analyzed within the linear spin-wave approximation and by exact diagonalization over a $4\ifmmode\times\else\texttimes\fi{}4$ cluster. A quantum critical point (QCP) is identified that separat…
Abstract A mathematical model to predict the evolution of the morphology of immiscible liquid–liquid systems in single screw extruders has been developed. The model computes the dimensions of the dispersed phase in the polymeric matrix, taking into account the stretching, break‐up, and coalescence phenomena. The corre…
Azobenzene derivatives containing polymers deform when exposed to light with a wavelength in the principle absorption band associated with trans−cis isomerization of the azobenzene derivative molecule. When such polymers cover a metallic nanoparticle exposed to light near its surface plasmon resonance, which also happ…
The structural and elastic properties of BiMnO(3) with monoclinic (C 2/c) and orthorhombic (Pnma) ferromagnetic (FM) structures have been studied by first-principles calculations within LDA + U and GGA + U approaches. The equilibrium volumes and bulk moduli of BiMnO(3) phases are evaluated by equation of state (EOS) f…
Results are reviewed from a study on retention and running of water and other liquids on tilted, polymer coated surfaces. The polymer is a thermally-stripped, solvent-borne acrylic composed primarily of the monomer 2-ethylhexyl acrylate, providing a soft and viscoelastic substrate absent of contaminants. It is shown t…
Nanocomposites of novolac phenolic resin with a series of organoclays based on sodium montmorillonite exchanged with various amine compatibilizers were fabricated via melt processing. The effects of the amine structure on the resulting morphology and physical properties were investigated by employing wide-angle X-ray…
Abstract Starting with the nearly spherical endohedral M@Si 16 cage‐like clusters (M = Sc − , Ti, V + ) in their fullerene‐like isomerical form with D 4 d symmetry, we study the trends in the formation of [Ti@Si 16 ] n , [Sc@Si 16 K] n , and [V@Si 16 F] n aggregates as their size increase ( n ≤ 9). We identify special…
In this paper, we investigate the cation-exchange properties of a self-assembled hybrid material towards trivalent ions, lanthanides (La(3+), Eu(3+), Gd(3+), Yb(3+)) and Fe(3+). The bis-zwitterionic lamellar material was prepared by sol-gel process from only 3-aminopropyltriethoxysilane (APTES), succinic anhydride, an…
Single-walled carbon nanotube (SWCNT) samples were rigorously purified by high temperature oxidation, acid treatment, ultrasonication, neutralisation and filtration process. By a very simple wet chemical route, SWCNT bundles were hybridised with freshly prepared ZnS nanocrystals of average size 2.00 nm. Characterisati…
Abstract A systematic study on the surface‐enhanced Raman scattering (SERS) for 3,6‐bi‐2‐pyridyl‐1,2,4,5‐tetrazine (bptz) adsorbed onto citrate‐modified gold nanoparticles (cit‐AuNps) was carried out based on electronic and vibrational spectroscopy and density functional methods. The citrate/bptz exchange was carefull…
Abstract Adsorption of nitrogen and oxygen in nanoporous carbons (NPC) is simulated using grand canonical Monte Carlo simulations, where the Steele potential (developed for gas interactions with graphite) is used to represent gas–carbon interactions. NPC models used for the adsorption simulations are developed using a…