Materials Literature
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Recent research has established the influence of seed nature in determining the final shapes of metallic (Ag, Au) nanocrystals. In this work, we utilize and extend this knowledge to produce anisotropic β-AgI nanoplatelets in high yield: Ag seeds (∼20 nm) with twin defects were first selectively nucleated and then reac…
We have developed a self-consistent technique to predict the behavior of plasmon resonances in multicomponent systems as a function of wavelength. This approach, based on the tight lower bounds of the Bergman-Milton formulation, is able to predict optical data, including the positions, shifts, and shapes of plasmonic…
A detailed density functional theory study of pseudotetrahedral Fe(III/IV)-imido-phosphine complexes has yielded a host of new insights. The calculations confirm dxy(2)dx(2)-y(2)(2)dz(2)(1) (or dδ(2)dδ'(2)dσ(1)) electronic configurations for Fe(III)-imido complexes of this type, as previously proposed, where the z dir…
The oxidation kinetics for $\mathrm{Ni}(111)$ surface and the structure of the oxide layers grown at room temperature were analyzed by high-resolution medium energy ion scattering using isotopically labeled $^{18}\mathrm{O}_{2}$. Initially, the surface showed a reflection high energy electron diffraction (RHEED) patte…
In this paper we present a detailed analytical study of the phase diagram and of the structural properties of a field theoretic model with a short-range attraction and a competing long-range screened repulsion. We provide a full derivation and expanded discussion and digression on results previously reported briefly i…
A Valence Bond Configuration Interaction (VBCI) model is used to relate the intraligand magnetic exchange interaction (J) to the electronic coupling matrix element (HAB) in Tp(Cum,MeZn)(SQNN), a compound that possesses a Donor-Acceptor (D-A) SemiQuinone-NitronylNitroxide (SQNN) biradical ligand. Within this framework,…
In protein crystallography, spherulites are considered the result of a failed crystallization experiment. Understanding the formation of these structures may contribute to finding methods to prevent their formation. Here, we present an in situ study on lysozyme spherulites grown from sodium nitrate and sodium thiocyan…
The paper discusses the deposition of protective coatings ranging from organosilicon plasma polymers to SiO 2 -like films and hard diamond-like carbon/silicon oxide (DLC : SiO x ) coatings in radio frequency capacitively coupled discharges using hexamethyldisiloxane (HMDSO). As a result of the optimization of the depo…
Copper-doped AlN (AlN:Cu) nanorods were grown on catalyst-free Si substrates by chemical vapour deposition. The AlN:Cu nanorods exhibited the wurtzite structure with a growth direction along the c-axis. Ferromagnetic ordering of the AlN:Cu nanorods was observed at room temperature by an alternating gradient magnetomet…
The laser-assisted holographic grating recording process in films of azobenzene functionalized polymers is usually studied by observation of the efficiency of light scattering on a developing in time diffraction grating. Various possible mechanisms contributing to grating formation as well as the bulk or surface origi…
The preparation of single-walled, double-walled and thin multi-walled nanotubes by hydrocarbon pyrolysis or carbon monoxide catalytic decomposition is considered. The versions of methods, reagents and catalysts are described systematically. The kinetics and mechanisms of processes are characterised. Trends in the deve…
Linear poly(urethane urea) containing a biodegradable soft segment and a hard segment built solely from methyl-2,6-diisocyanatehexanoate (LDI) is presented, using a procedure where no chain extender is required. By having LDI in excess, together with a soft segment, and adding water in the vapor phase continuously cre…
In this study, the nucleation mechanism of carbon nanocones is investigated using molecular dynamics (MD) simulations and structural analyses and is compared with that of carbon nanotubes. It is shown that the structural stability of carbon nanocones is sensitive to the cone apex angle. Specifically, an increase in th…
We consider the nonlinear rheology of dense colloidal suspensions under a time-dependent simple shear flow. Starting from the Smoluchowski equation for interacting Brownian particles advected by shearing (ignoring fluctuations in fluid velocity), we develop a formalism which enables the calculation of time-dependent,…
Electrocrystallization of single nanowires and/or crystalline thin films of the semiconducting and magnetic Co[TCNQ] 2 (H 2 O) 2 (TCNQ = tetracyanoquinodimethane) charge-transfer complex onto glassy carbon, indium tin oxide, or metallic electrodes occurs when TCNQ is reduced in acetonitrile (0.1 M [NBu 4 ][ClO 4 ]) in…
Mesostructured silica materials of SBA-16 type were synthesized under varying conditions affecting the pore size distribution. The α s -plot method allows us to identify two populations of intrawall pores and measure their respective specific volumes. A semiquantitative treatment of these data yields an estimate for t…
The interaction of murine embryonic cortical neurons on randomly orientated electrospun scaffolds of poly(L-lactide) (P(L)LA) and poly(lactide-co-glycolide) (PLGA) is investigated in this study. The scaffolds were surface treated with different concentrations of KOH to partially hydrolyze the surface and therefore cha…
Abstract The influence of potential on electrochemical behaviour of pure Ti, Ti‐6Al‐7Nb, and Ti‐6Al‐4V ELI alloy under saline conditions were investigated by electrochemical impedance spectroscopy (EIS). All measurements were carried out in saline solution (0.9% NaCl) at different impressed potentials (corrosion poten…
We show that in slowly generated two-dimensional packings of frictional spheres, a significant fraction of the friction forces lie at the Coulomb threshold-for small pressure p and friction coefficient mu , about half of the contacts. Interpreting these contacts as constrained leads to a generalized concept of isostat…
Nanocontrast agents have great potential in magnetic resonance (MR) molecular imaging applications for clinical diagnosis. We synthesized Au(3)Cu(1) (gold and copper) nanoshells that showed a promising MR contrast effect. For in vitro MR images, the large proton r1 relaxivities brightened T(1)-weighted images. As for…