Materials Literature
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The effects of NbN nanoparticles synthesized via a simple "urea glass" route on the dehydrogenation properties of LiAlH4 have been systematically investigated. The particle size of the as-synthesized NbN nanoparticles is determined to be about 10 nm. The surface configuration and dehydrogenation behaviors of the 2 mol…
Under atmospheric conditions, silver nanowires were prepared via an (NH4)2CO3-mediated polyol process rather than the normally used metal salt-mediated polyol processes in order to improve the purity. The results revealed that the obtained silver nanowires had rounded ends rather than the conventionally believed {111}…
Zinc oxide nanorods (ZnO NRs) have emerged in recent years as extremely useful, optical signal-enhancing platforms in DNA and protein detection. Although the use of ZnO NRs in biodetection has been demonstrated so far in systems involving many ZnO NRs per detection element, their future applications will likely take p…
A fast method for determination of the Co-valence state by electron energy loss spectroscopy in a transmission electron microscope is presented. We suggest the distance between the Co-L3 and Co-L2 white-lines as a reliable property for the determination of Co-valence states between 2+ and 3+. The determination of the…
Ordered organic substrates influence the crystallisation of minerals and different crystal morphologies and polymorphs can be stabilised by varying the properties of the substrates. The mechanisms behind this crystallisation control are not always apparent; however in recent years results from molecular modelling stud…
We investigate the effect of antiferromagnetic (AF) quantum criticality on the magnetic penetration depth λ(T) in line-nodal superconductors, including the cuprates, the iron pnictides, and the heavy-fermion superconductors. The critical magnetic fluctuation renormalizes the current vertex and drastically enhances the…
Abstract We study experimentally and theoretically the properties of structural defects (kink solitons) in two-dimensional ion Coulomb crystals. We show how different types of kink solitons with different physical properties can be realized, and transformed from one type into another by varying the aspect ratio of the…
Dendrimer, a new class of hyper-branched polymer with predetermined molecular weight and well-controlled size, has received much attention in nanobiomedical applications such as drug carrier, gene therapy, disease diagnosis, etc. In this study, pegylated polyamidoamine (PAMAM) dendrimer at generation 3.0 (G 3.0) and c…
SrTiO3 thin films were epitaxially grown on (100) SrTiO3 substrates using molecular beam epitaxy. The temperature for growth of the films was optimized, which was indicated by x-ray diffraction and further confirmed by microstructural characterization. Photoluminescence spectra show that oxygen-vacancy contributes to…
Two new series of dirhodium(II,II) complexes cis-[Rh2(μ-DTolF)2(L)2][BF4]2 and cis-[Rh2(μ-F-form)2(L)2][BF4]2 were synthesized and fully characterized (DTolF = p-ditolylformamidinate, F-form = p-difluorobenzylformamidinate; L = the chelating diimine ligands dpq (dipyrido[3,2-f:2′,3′-h]quinoxaline), dppz (dipyrido[3,2-…
Double-sided coordination assembly via a two-step ligand exchange reaction was introduced to synthesize superparamagnetic poly(styrene-co-acrylic acid)/Fe3O4/polyacrylic acid (P(St-AA)/Fe3O4/PAA) composite microspheres for the first time. In the two-step ligand exchange reaction, the coordination interaction of carbox…
The limit of detection of 4-nitrothiophenol adsorbed onto the surface of a platform fabricated by nanosphere lithography is investigated by surface-enhanced Raman spectroscopy. Critical factors such as the functionalization time and the change of sharpness of the gold nanostructures upon annealing are studied. Platfor…
In this work, we reported the synthesis of concave nanocubes of iron-manganese oxide (MnxFe1−xO) via a thermolysis process in a mixture of oleic acid (OA) and oleylamine (OAm). The shape and size of the iron-manganese oxide can be tuned by changing the experimental conditions such as the solvent composition (volume ra…
We carried out a systematic molecular simulation study of the behavior of a pair of finite-size graphene plates immersed in water at isobaric–isothermal conditions to provide insights into the nature of the water–graphene (corrugated) surface interactions. The goal was to address the link between the corrugation-drive…
The preparation of nanostructured diamond electrodes, decorated with Pt nanoparticles is described in this work. The method involves the electrodeposition of Pt particles on the diamond electrode surface, after which the structure is treated with either an oxygen plasma or an hydrogen plasma. In the former treatment,…
A polarization independent switchable phase grating based on polymer stabilized blue phase liquid crystal is proposed. A high efficiency of the phase grating has been achieved because of the sharp rectangular phase profile which shows good agreement with the simulation results. The diffraction efficiency of the 1st or…
Spin fluctuations in superconducting BaFe2(As(1-x)P(x))2 (x=0.34, T(c)=29.5 K) are studied using inelastic neutron scattering. Well-defined commensurate magnetic signals are observed at (π, 0), which is consistent with the nesting vector of the Fermi surface. Antiferromagnetic (AFM) spin fluctuations in the normal sta…
We report the induction of chiroptical properties in 2 nm diameter gold nanoparticles passivated with short peptides characterized by the Aib-l-Ala repetition in their sequence. The nanoparticles present relevant ECD signals in the 300-650 nm wavelength region, corresponding to the gold nanoparticle's quantized electr…
Aluminum oxide nanoparticles were used as nanofillers in urea-formaldehyde (UF) resin and prepared for medium density fiberboards (MDF). The nanofillers composed weight percentage of the UF resin. The thermal and viscoelastic properties were studied using differential scanning calorimetry and dynamic mechanical analys…
N-Confused porphyrin (NCP) and its externally methylated variant (MeNCP) were investigated using UV-vis and magnetic circular dichrosim (MCD) spectroscopies. In addition to evaluating the spectroscopy of the neutral compounds, the acid/base chemistry of these macrocycles was examined by the same methods. NCP exhibits…