Materials Literature
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The combination of top-down and bottom-up technologies is an effective method to create the novel nanostructures with long range order in the field of advanced materials manufacture. In this work, we employed a polymeric self-consistent field theory to investigate the pattern formation of diblock copolymer in a 2D con…
The theory of analytic Bond-Order Potentials as applied to non-collinear magnetic structures of transition metals is extended to take into account explicit rotations of Hamiltonian and local moment matrix elements between locally and globally defined spin-coordinate systems. Expressions for the gradients of the energy…
The photocontrol of protein function like enzyme activity has been the subject of many investigations to enable reversible and spatiotemporally defined cascading biochemical reactions without the need for separation in miniaturized and parallelized assay setups for academic and industrial applications. A photoswitchab…
A series of isomeric poly(thioether imide)s (PTIs) containing thioether linkages were prepared by aromatic nucleophilic substitution reaction of isomeric bis(chlorophthalimide)s (BCPIs) and bisthiophenols. The glass transition temperatures ( T g s) of the isomeric PTIs were 190–264°C, the 5% weight loss temperature (…
Samples of hyperbranched polymethylsilsesquioxanes were synthesized at various polycondensation times and intramolecular cycle amounts. The samples were studied in solutions in toluene and hexane. It is shown that increasing the polycondensation duration results in the growth of number of cycles and intramolecular den…
We have studied electronic transport and magnetic properties of α-(In1−xFex)2O3 alloy films. Temperature dependence of resistivity of the films showed semiconducting behavior of conductivity. Room temperature ferromagnetism was observed. Relatively high coercive fields indicated that observed ferromagnetism in α-(In1−…
Abstract Functionalization of imidazolium salts (IMSs) that allow easy derivation of molecular or solid supports are called for in various applications. Here, the synthesis of an alkyne‐containing IMS can be achieved in three steps from 2,4,6‐trimethylaniline, and this IMS can be further successfully functionalized by…
The biocompatibility of nickel titanium (NiTi) wires joined to stainless steel (SS) wires via laser autogenous brazing has been evaluated. The laser joining process is designed to limit the amount of mixing of the materials, thus preventing the formation of brittle intermetallic phases. This process has the potential…
Dimeric [Cu2(4-ClC6H4COO)4(EtOH)2] (1) reacted with pyridine (pyr), 2,2′-bipyridine (bpy), and 1,4,8,11-tetraazacyclotetradecane (cyclam) to form mononuclear covalent complexes, [Cu(4-ClC6H4COO)2(pyr)2(H2O)] (2) and [Cu(4-ClC6H4COO)2(bpy)(H2O)] (3), and mononuclear ionic, [Cu(cyclam)(H2O)2](4-ClC6H4COO)2 (4), respecti…
Ultrathin two-dimensional WS2 nanostructures with various morphologies have been prepared on SiO2/Si (300 nm) and sapphire substrates by vapor phase deposition method. Simultaneously, tungsten nanostructures have also been obtained during the growth process. The nanostructures and morphologies of as-prepared products…
Amphibian eggs have been widely used to study embryonic development. Early embryonic development is driven by maternally stored factors accumulated during oogenesis. In order to study roles of such maternal factors in early embryonic development, it is desirable to manipulate their functions from the very beginning of…
The self-aggregation of amphiphilic dendrimers G1QPAMCm based on poly(amidoamine) PAMAM possessing the same hydrophilic group but differing in alkyl chain length in aqueous solution was investigated. Differences in the chemical structures lead to significant specificities in the aggregate building process. A variety o…
We have applied Umklapp phonon-phonon and phonon-defect scattering to calculate the thermal conductivity of unalloyed as well as Fe- and La-alloyed RuO2 (P42/mnm). These models are computationally efficient and parameter free as they are supported by density functional theory. We predict an order of magnitude drop in…
Abstract Flammschutzmittel werden in eine Vielzahl von Kunststoffen eingearbeitet, um ihre Brennbarkeit herabzusetzen. Ihr Einsatz dient dazu, unser Leben sicherer zu machen und Hab und Gut vor Bränden zu schützen. In diesem Artikel werden unterschiedliche Flammschutzmittelklassen vorgestellt und ihre Wirkungsweisen i…
A new metrological facility devoted to the thermal conductivity measurements up to 1000 °C for thin films (from few tens nanometers to few micrometers thick) deposited on substrate has been recently designed at LNE. Its measurement principle is based on the infrared modulated photothermal radiometry technique (MPTR).…
We present a fabrication method to achieve a graphene stack metamaterial, a periodic array of unit cells composed of graphene and a thin insulating spacer, that allows accumulation of the strong absorption from individual graphene sheets and low reflectivity from the stack. The complex sheet conductivity of graphene f…
Superlattice films with full-Heusler Co2MnSi (CMS) alloy and Pd layers prepared on Pd-buffered MgO(001), (110), and (111) substrates were investigated. Crystal orientation and epitaxial relationship of Pd and CMS layers were analyzed from x-ray diffraction, pole figure measurements, and transmission electron microscop…
A novel diamine 10-(3,5-diaminobenzoyl)phenothiazine (DBPT) with a side chain containing phenothiazine unit was synthesized. A new family of polyimides (PIs) containing phenothiazine unit in the side chains has been successfully synthesized by direct polycondensation of DBPT with pyromellitic dianhydride, 3,3′,4,4′-be…
In this work, the physicochemical properties of poly( N-vinyl-2-pyrrolidone) (PVP) reinforced with the poly(amide–imide)/alumina nanocomposite (PAN) under sonochemical treatment were studied. In the process of manufacturing PAN, the surface of alumina nanoparticles was grafted with 15 wt% of the bioactive dicarboxylic…
Size effects in plasticity are mostly studied in metallic systems, but they are rarely investigated in ionic crystals. In this study, single-crystalline KCl and LiF pillars were fabricated by focused ion beam technique and compressed using a flat punch tip in a nanoindenter. The materials were investigated with regard…