Materials Literature
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Hydrogenated amorphous carbon (a-C:H) and fluorinated (a-C:H:F) thin films were deposited from acetylene/argon and acetylene/argon/sulfur hexafluoride mixtures. For the first gas mixture, the plasma was kept for 5 or 10 minutes using 9.5 Pa of pressure (30% C 2 H 2 e 70% Ar) while for the second it was kept for 5 minu…
This thesis presents research into the mechanical response of particulate polymer composites, both energetic and inert, that contributes towards the wider understanding of deformation and damage mechanisms in Polymer Bonded Explosive (PBXs). Specifically, high and low strain-rate compression experiments were performed…
The paper demonstrates possibility of giant enhancement of Surface Enhanced Hyper Raman Scattering on the base of qualitative consideration of electromagnetic field near some models of rough metal surfaces and of some features of the dipole and quadrupole light-molecule interaction, such as it was made in the dipole-q…
The stimulus-induced blue-to-red transition of polydiacetylenes (PDAs) has led to the development of a variety of PDA-based chemosensors. In their Communication on page 1422 ff., J. Yoon, J. Y. Lee, and co-workers describe an anionic-surfactant-selective sensor based on PDA and imidazolium, which shows selective color…
In the title compound, C(31)H(34)N(2)O(4), the two pyrrole rings are bent around the central methyl-ene C atom, making a dihedral angle of 64.83 (7)°. In the crystal, mol-ecules are linked into dimers via N-H⋯O=C hydrogen bonds. These dimers are packed through π⋯π inter-actions between neighboring pyrrole rings with a…
Putting on or taking off clothes helps the body to stay within the comfortable temperature range (to avoid shivering or sweating) at different activity levels and ambient conditions. Clothes with b ...
Der induzierte Blau-Rot-Übergang in Polydiacetylenen (PDAs) bildet die Grundlage für verschiedene PDA-Chemosensoren. In ihrer Zuschrift auf S. 1464 ff. beschreiben J. Yoon, J. Y. Lee und Mitarbeiter einen tensidselektiven Sensor bestehend aus Imidazolium-PDA, der mit selektiver Verfärbung auf anionische Tenside reagie…
This Progress Report presents temperature-, magnetic-field-, and pressure-dependent Raman measurements of strongly correlated materials such as the charge-ordering manganese perovskites, the multiferroic material TbMnO(3), and the charge-density wave (CDW) materials 1T-TiSe(2) and Cu(x)TiSe(2). These studies illustrat…
The knight move or (square root(5) x square root(5)) R27 degree phase occurs on some surfaces relevant for growth of high-T(c) superconducting films and other technologically significant surfaces. The nature of the disordering transition of this phase has not been determined. We demonstrate via simulation that this di…
The phase transformation behaviour of Grade 92 steel has been investigated using differential thermal analysis (DTA) and hardness measurements. In our DTA experiments, disk-shaped samples were normalized at 1070°C and then tempered at temperatures between +10 and −40°C from the ferrite-to- austenite transformation tem…
Abstract The transient two‐layer thin‐film planar flow is investigated theoretically in this study. The interplay among inertia, viscous and surface/interfacial tension is emphasized. It is found that the film and interface profiles, as well as the flow field, are strongly influenced by the viscosity ratio, velocity a…
Molekulares Tauziehen tritt zwischen nicht- und teilfluorierten Alkylketten auf, wenn sie durch ionisches Anbinden an ein Polypropylenimin-Dendrimer zu großer Nähe gezwungen werden. Der Wettkampf der beiden Substituenten um die Steuerung der supramolekularen Organisation der Moleküle führt zu unerwarteten mesomorphen…
The Mn—Zn ferrite nanoparticles (Co x Mn 0.5 Zn 0.5-x Fe 2 O 4 , X = 0, 0.03, 0.12, 0.24, and 0.34) were prepared by a microemulsion technique and characterized by energy dispersive spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), etc. The XRD patterns ind…
In the neutral, mononuclear title complex, [Ni(C(4)H(6)NO(3))(2)(H(2)O)(2)], the Ni atom lies on a crystallographic inversion centre within a distorted octa-hedral N(2)O(4) environment. Two trans-disposed anions of 3-hydroxy-imino-butanoic acid occupy four equatorial sites, coordinated by the deprotonated carboxyl-ate…
Abstract Gaslöslichkeiten gehören zu den Stoffdaten, die grundlegend für eine Vielzahl chemisch‐technischer Einsatzfelder sind. Sie stellen beispielsweise die Stoffdatenbasis für Absorptionsprozesse dar und sind wichtig bei der Auslegung von Gas/Flüssig‐Reaktoren. In dieser Arbeit werden Henrysche Koeffizienten als Ma…
Ni/TiN and Al/TiN bilayer stacks were investigated to determine the influence of the thin metals on the total effective workfunction. The workfunctions of the bilayer stacks were measured using C-V (capacitance–voltage) curves. The effective workfunctions of both bilayer stacks were controlled by changing the TiN laye…
Abstract The performance of a solid‐liquid separation process is often limited by size distribution and morphology of the crystals. To predict the filtration behavior, a robust and applicable model based only on crystallization process parameters is necessary. Therefore, a model has been successfully developed for the…
Abstract The scaling up of the Hot Wire Chemical Vapor Deposition (HW‐CVD) technique to large deposition area can be done using a catalytic net of equal spaced parallel filaments. The large area deposition limit is defined as the limit whenever a further increment of the catalytic net area does not affect the properti…
An amphiphilic graft copolymer poly(vinyl alcohol)-g-poly(butyl acrylate) (PVA-g-PBA) was synthesized by grafting butyl acrylate (BA) onto poly(vinyl alcohol) (PVA) with potassium persulfate (KPS) as free radical initiator in N2 atmosphere and aqueous medium. The formation of graft copolymer was confirmed by means of…
Molecular models of phthalocyanine and porphyrin complexes are discussed. The molecules added to the JCE Featured Molecules library this month include phthalocyanine anion, phthalocyanine green, substituted iron(II) phthalocyanine complexes, tetraazaporphyrin, and porphyrin.