Materials Literature
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The synthesis and characterization of core-shell Fe(3)O(4)@organic@Au nanoparticles displaying plasmonic behavior, high magnetism, and high relaxivity is presented. The incorporation of a thin organic layer between the two metals is crucial in maintaining the saturation magnetisation of the superparamagnetic core.
Metal exchange: A layered alkali silicate, magadiite, effectively concentrates Zn2+ from seawater by ion exchange even in the presence of Cd2+. The interlayer Na+ of magadiite is almost quantitatively exchanged with Zn2+ in mixed-electrolyte solutions (see picture).
We studied the insulator-metal transition (IMT) in single-domain, single crystalline vanadium dioxide (VO(2)) microbeams with infrared microspectroscopy. The unique nature of such samples allowed us to probe the intrinsic behavior of both insulating and metallic phases in the close vicinity of IMT, and investigate the…
One- and two-dimensional wide-angle X-ray scattering (1D and 2D WAXS) measurements were performed on vapor-deposited glasses of indomethacin. Physical vapor deposition can be used to prepare organic glasses with high kinetic stability and other properties that are expected for glasses that have been aged for thousands…
MnO 2 /carbon nanocomposites with hierarchical pore structure and controllable MnO 2 loading have been synthesized using a self-limiting growth method. This was achieved by the redox reactions of KMnO 4 with sacrificed carbon substrates that contain hierarchical pores. The unique pore structure allows the synthesis of…
We developed an electro thermal model of NbN superconducting nanowire avalanche photodetectors (SNAPs) on sapphire substrates. SNAPs are single photon detectors consisting of the parallel connection of N superconducting nanowires. We extrapolated the physical constants of the model from experimental data and we simula…
We develop an efficient and general method for optimizing the microwave field that achieves magnetization switching with a smaller static field. This method is based on optimal control and renders an exact solution for the 3D microwave field that triggers the switching of a nanomagnet with a given anisotropy and in an…
Granular materials are inherently heterogeneous, leading to challenges in formulating accurate models of sound propagation. In order to quantify acoustic responses in space and time, we perform experiments in a photoelastic granular material in which the internal stress pattern (in the form of force chains) is visible…
Abstract Water‐dispersed graphene oxide sheets were used to prepare graphene/poly(ethylene glycol) diacrylate resin composites by photopolymerization. It was found that graphene sheets undergo excellent morphological distribution within the resin system, giving rise to transparent composites with unaltered thermal pro…
The first cationic main group tetrahydroborate complexes are reported. [Ca(BH(4))(THF)(5)][BPh(4)] and the charge neutral (Tp((t)Bu,Me))Ca(BH(4))(THF) are initiators for the living ring opening polymerization of rac-lactide, the latter producing PLA with high levels of heterotactic enrichment. These represent a new cl…
Chelating neutral (N,O) and cationic (N,N) first- and second-generation ruthenium(II) arene metallodendrimers based on poly(propyleneimine) dendrimer scaffolds were obtained from dinuclear arene ruthenium precursors by reactions with salicylaldimine and iminopyridyl dendritic ligands, respectively. The N,N cationic co…
Phase diagrams of isoelectronic Eu$_{1-x}$Gd$_x$O and Eu$_{1-x}$Gd$_{x}$S quasi-binary alloy systems are constructed using first-principles calculations combined with the standard cluster expansion approach and Monte-Carlo simulations. The oxide system has a wide miscibility gap on the Gd-rich side but forms ordered c…
This paper examines the influence of SiO 2 doping on densification and microstructure evolution in Nd 3 x Y 3−3 x Al 5 O 12 (Nd:YAG) ceramics. Nd:YAG powders were doped with 0.035–0.28 wt% SiO 2 and vacuum sintered between 1484° and 1750°C. 29 Si magic‐angle spinning nuclear magnetic resonance showed that Si 4+ substi…
As a starting point for our calculation of 3-methyl-4-phenyl-5-(2-pyridyl)-1,2,4-triazole we used the XRD data obtained by C. Liu, Z. Wang, H. Xiao, Y. Lan, X. Li, S. Wang, Jie Tang, Z. Chen, J. Chem. Crystallogr., 2009 39 881. The structure was optimized by minimization of the forces acting on the atoms keeping the l…
Fluorescent nanoscale coordination polymers with cubic morphology and long range ordered structure were fabricated and exhibited efficient sensing for both nitroaromatic explosive and nitromethane due to large surface area to volume ratio and strong binding affinity to explosive molecules.
Mesoporous V2O5 nanofibers were fabricated by a method combining sol–gel processing with electrospinning followed by annealing in air. The resultant nanofibers were 350 nm in diameter and consisted of porous polycrystalline vanadium oxide with a specific surface area of ∼97 m2 g−1. The mesoporous V2O5 nanofibers demon…
Sm- and Ho-substituted and pure nickel ferrite materials, namely, NiFe 1.925 Sm 0.075 O 4, NiFe 1.925 Ho 0.075 O 4, and NiFe 2 O 4, have been synthesized by the solid-state chemical reaction, and their structural, magnetic, dc electrical conductivity, ferromagnetic, ferroelectric, and dielectric properties have been e…
High quality freestanding pristine graphene (PG) and boron-doped graphene (BG) were prepared by a novel and versatile method. BG is more conductive than PG due to a larger density of state generated near the Fermi level. Using BG as a back electrode, we achieved improved hole-collecting ability and photovoltaic effici…
We have employed thin films of highly purified semiconducting carbon nanotubes as near-infrared optical absorbers in heterojunction photovoltaic and photodetector devices with the electron acceptor C(60). In comparison with previous implementations of more electrically heterogeneous carbon nanotube/C(60) devices, we h…
Thermochromic luminescence is characteristic of the title system, which is fabricated by layer-by-layer assembly of anionic bis(2-sulfonatostyryl)biphenyl (BSB) and positively charged layered double hydroxide (LDH) nanosheets on quartz glass. The BSB/LDH films show fast luminescent response and switching properties, i…