Materials Literature
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We present magnetization and magnetostriction studies of LaCoO3 in magnetic fields approaching 100 T. In contrast with expectations from single-ion models, the data reveal two distinct first-order transitions and well-defined magnetization plateaus. The magnetization at the higher plateau is only about half the satura…
The energy level alignment of the two organic materials forming the TTF-TCNQ interface is analyzed by means of a local orbital DFT calculation, including an appropriate correction for the transport energy gaps associated with both materials. These energy gaps are determined by a combination of some experimental data a…
We analyze electronic and phononic quantum transport in zigzag or chiral graphene nanoribbons (GNRs) perforated with an array of nanopores. Since local charge current profiles in these GNRs are peaked around their edges, drilling nanopores in their interior does not affect edge charge currents while drastically reduci…
This paper describes a simple and direct method to calculate the shell thickness of spherical core–shell nanoparticles from X-ray photoelectron spectroscopy data. In contrast to existing methods, it is not iterative and involves a simple forward calculation that is accurate to a typical error of 4%. The method is appl…
The thermoelectric properties of hybrid graphene/boron nitride nanoribbons (BCNNRs) are investigated using the nonequilibrium Green's function approach. We find that the thermoelectric figure of merit ($ZT$) can be remarkably enhanced by periodically embedding hexagonal BN ($h$-BN) into graphene nanoribbons (GNRs). Co…
Composites consisting of Fe(3)O(4) microspheres (FMS) and polyaniline (PANI), FMS/PANI, have been successfully prepared through a two-step oxidative polymerization of aniline monomers in the presence of Fe(3)O(4) microspheres. In our two-step polymerization technique, Fe(3+) and ammonium persulfate (APS) are used as t…
Magnetic liposomes offer opportunities as theranostic systems. The prerequisite for efficient imaging, tissue targeting or hyperthermia is high magnetic load of these vesicles. Here we describe the preparation of Ultra Magnetic Liposomes (UMLs), which may encapsulate iron oxide nanoparticles in a volume fraction of up…
Janus particles have different features/chemistry on two opposite sides (see figure). So far, they have been obtained mainly by two-dimensional synthetic methods, which are able to break the symmetry but limit the amount of produced particles. A true bulk approach, based on bipolar electrochemistry, is presented that…
The fundamental role of halide anions in the seed-mediated synthesis of anisotropic noble metal nanostructures has been a subject of debate within the nanomaterials community. Herein, we systematically investigate the roles of chloride, bromide and iodide anions in mediating the growth of anisotropic Au nanostructures…
In recent years, the development of porous materials derived from discrete organic molecules made a substantial progress towards high-surface-area materials with distinct properties. One major advantage in comparison to existing, well-established porous polymers is their solubility, making such compounds potential val…
The high transparent superhydrophobic surface covered with hollow spheres has been fabricated through a carbon template route. The as-prepared coating without treating with low surface energy materials showed superhdrophilic and anti-fogging properties while displayed superhydrophobic characteristics after surface mod…
The field-induced blockage of magnetization behavior was first observed in an Yb(III)-based molecule with a trigonally distorted octahedral coordination environment. Ab initio calculations and micro-SQUID measurements were performed to demonstrate the exhibition of easy-plane anisotropy, suggesting the investigated co…
Healable, electrically conductive films are fabricated by depositing Ag nanowires on water-enabled healable polyelectrolyte multilayers. The easily achieved healability of the polyelectrolyte multilayers is successfully imparted to the Ag nanowire layer. These films conveniently restore electrical conductivity lost as…
Micrometer-sized single-crystal GeSe nanosheets have been synthesized by a solution method. The single GeSe nanosheet exhibits novel anisotropic photoresponse properties in two photodetectors based on individual nanosheet. The on/off switching ratio of the photodetector perpendicular to the nanosheet is 3.5 times high…
Different biological methods are gaining recognition for the production of silver nanoparticles (Ag-NPs) due to their multiple applications. The use of plants in the green synthesis of nanoparticles emerges as a cost effective and eco-friendly approach. In this study the green biosynthesis of silver nanoparticles usin…
Molybdenum disulfide (MoS(2)) thin-film transistors were fabricated with ion gel gate dielectrics. These thin-film transistors exhibited excellent band transport with a low threshold voltage (<1 V), high mobility (12.5 cm(2)/(V·s)) and a high on/off current ratio (10(5)). Furthermore, the MoS(2) transistors exhibited…
A simplified prototype device of high-performance all-solid-state supercapacitors (ASSSs) based on 3D nitrogen and boron co-doped monolithic graphene aerogels (BN-GAs) is demonstrated for the first time. The resulting ASSSs show high specific capacitance, good rate capability, and enhanced energy density or power dens…
利用实时红外对由光引发剂2，2’，5-三（2-氟苯基）-4-（3，4-二甲氧基苯基）-4’，51_二苯基-1，1’-二咪唑（WJ—HABI）、增感剂4，4-二（N，N’-二甲基氨基）苯甲酮（EMK）及供氢体N-苯基甘氨酸（NPG）组成的复合引发体系进行光聚合动力学研究．探讨了复合引发体系的浓度、不同配比、紫外光的强度及不同官能度单体等因素对光聚合动力学的影响．结果表明，增感剂（EMK）的加入能使WJ～HABI复合体系的紫外吸收波长向长波移动；随着引发体系浓度的增大、紫外光强度升高，双键转化率及聚合速率增大，且聚合体系达到最高转化率所需时间越少．
International audience
International audience