Materials Literature
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The interface magnetism between Co2FeGe Heusler alloy layers and MgO layers was investigated using 57Fe Mössbauer spectroscopy. Interface-sensitive samples, where the 57Fe isotope was used only for the interfacial atomic layer of the Co2FeGe layer on the MgO layer, were prepared using atomically controlled alternate d…
The use of X-ray crystallography for the structure determination of biological macromolecules has experienced a steady expansion over the last 20 years with the Protein Data Bank growing from <1000 deposited structures in 1992 to >100 000 in 2014. The large number of structures determined each year not o…
One-dimensional hierarchical nanostructures composed of SiC cores, SiO2 interlayers and crystalline carbon coatings (SiC@SiO2@c-C) were successfully synthesized by Ni-assisted chemical vapor deposition method. The nanostructures delivered a low turn-on field of 0.8 V μm−1 and threshold field of 2.6 V μm−1 when evaluat…
The optical gap in a series of bromo-bridged platinum chain complexes, [Pt(en)2Br](C(n)-Y)2·H2O (en = ethylenediamine; C(n)-Y = dialkyl sulfosuccinate; n = the number of carbon atoms), was controlled by using chemical pressure. From the single-crystal structure, [Pt(en)2Br](C6-Y)2·H2O is in a mixed-valence state at 20…
The electrochemical corrosion behaviour of biomedical Ti–25Nb–3Mo–3Zr-2Sn (TLM) alloy was investigated in various simulated body fluids at 37±0·5°C utilising potentiodynamic polarisation and current–time curves. The Ti–6Al–4V (TC4) alloy was also investigated to make a comparison. The different simulated body fluids c…
We have developed a method to tune polarization-dependent optical absorption of large-scale chemical vapor deposition (CVD) graphene under total internal reflection (TIR) by strain engineering. Through control of the strain direction, the optical absorption of graphene for transverse magnetic or transverse electric wa…
<div> <p>Amoxicillin degradation with and without high frequency ultrasound waves of 2.4 MHz has been investigated. The concentration of amoxicillin was selected to be similar to that of outlet wastewater effluent concentration in pharmaceutical industry namely 50 and 100 ppm. The application of ultrasound…
In situ scanning electron microscopy (SEM) was used for observing the nucleation of graphene by segregation of bulk-dissolved carbon on a flat polycrystalline nickel surface. Preferential nucleation sites were determined on large (1 1 1) grains. In combination with ex situ atomic force microscopy measurements at the s…
A coarse-grained molecular dynamics (CG-MD) and reactive Monte Carlo (RMC) hybrid method (CG-MD + RMC) has been developed to investigate the hyperbranched polycondensation of 3,5-bis(trimethylsiloxy)benzoyl chloride to poly(3,5-dihydroxybenzoic acid). The CG force field to describe the formation of the hyperbranched m…
Here, we present a detailed methodology for the study of nano-electromechanical properties of thin films through in situ electrical nanoindentation. The nanomechanical properties of nano-crystalline platinum thin films have been accurately evaluated via nullifying multiple phenomena and artefacts that can introduce er…
Gas-phase studies of biomolecules are often difficult to initiate because of the thermolability of these systems. Such studies are nevertheless important to determine fundamental intrinsic properties of the molecules. Here we present the valence shell photoionization of gas-phase vitamins A and B1 close to their ioniz…
Near-infrared to ultraviolet multiphoton upconversion photoluminescence in ultrasmall Tm3+/Yb3+-codoped CaF2 nanocrystals (∼6.7  nm in size) was observed and further significantly enhanced by growing an active shell of NaYF4:Yb3+. Owing to the active shell, the lanthanide emitters inside the core…
V A Skryshevsky, V M Zinchuk, A I Benilov et al.
International audience
We propose a method for fast bistable switching of cholesteric liquid crystals. Fast switching from the focal conic to the planar state can be achieved by applying an in-plane electric field to the device for a short time. The in-plane field induces a transient state, which relaxes rapidly to the initial planar state.…
Self-assembly remains the most efficient route to the formation of ordered nanostructures, including the double gyroid network phase in diblock copolymers based on two intergrown network domains. Here we use self-consistent field theory to show that a tricontinuous structure with monoclinic symmetry, called 3 ths (5),…
ABSTRACT Polysilane supported dendrimer was efficiently utilized as an organocatalyst for Knoevenagel condensation reaction. Polysilane support was synthesized by the polymerization of trichloromethylsilane. The polypropyleneimine (PPI) dendrimer was grafted on the polymer support by divergent method. The dendrimer wa…
We present a high-pressure optical and infrared spectroscopy study on the mechanical stability of single-walled carbon nanotubes (SWCNTs) filled with C 60 and C 70 fullerene molecules (C 60 - and C 70 -peapods), double-walled carbon nanotubes (DWCNTs) derived from the C 60 - and C 70 -peapods (DWCNTs/C 60 and DWCNTs/C…
Self-ordered porous anodic alumina (PAA) membranes have been widely employed as a scaffold for fabricating various nanomaterials and functional nanostructures with an excellent uniformity. The self-organization processes are only found in narrow experimental windows even in PAA, and their formation mechanisms have not…
Binary nanocrystal superlattices present unique opportunities to create novel interconnected nanostructures by partial fusion of specific components of the superlattice. Here, we demonstrate the binary AB6 superlattice of PbSe and Fe2O3 nanocrystals as a model system to transform the central hexamer of PbSe nanocrysta…