Materials Literature
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An ordered surface structure formed after exposure of the ${\mathrm{HfB}}_{2}(0001)$ surface at $800\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$ to ${\mathrm{SiH}}_{4}(g)$ followed by annealing at $900\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$ has been characterized experimentally with low-energy electron diffra…
NH4[Hg3(NH)2](NO3)3 (1) und [Hg2N](NO3) (2) werden aus ammoniakalischen Lösungen von Hg(NO3)2 bei Raumtemperatur bzw. hydrothermal bei 180 °C in Form von farblosen bzw. dunkelgelben bis hellbraunen Einkristallen erhalten. Die Kristallstrukturen {NH4[Hg3(NH)2](NO3)3: kubisch, P4132, a = 1030, 4(2) pm, Z = 4, Rall = 0,…
Nanometer-scale thin films of rhodium supported on glassy carbon (nm-Rh/GC) were prepared by electrochemical deposition using cyclic voltammetry. STM studies demonstrated that the Rh film is made of layered crystallites of an average size 230 nm (l) × 90 nm (w) × 10−30 nm (h). In situ FTIR spectroscopic investigations…
The binary collision approximation (BCA) grounded on molecular dynamics results is used to investigate the influence of the range and stiffness of interatomic potentials on the replacement collision sequence (RCS) length and frequency distributions as well as on the displacement cascade expansion and density. Differen…
Hydrogen bonding between early and late transition metal complexes is proposed as a strategy to obtain ferromagnetic interactions based on a theoretical study using density functional calculations.
The interactions of charged particles with cylindrical tubules are studied within the framework of the dielectric theory. Elementary excitations on a tubule are modeled by an infinitesimally thin layer of free-electron gas, uniformly distributed over the surface of the tubule. The dielectric function of such a system,…
Understanding the blue shift in the photoluminescence (PL) of the nanosolid near the lower end of the size limit ( D < 5 nm) seems difficult with the currently available models. This challenges are not simply numerical convergency but importantly new physics hiding behind. We examined hereby the PL blue shift of Si na…
This paper presents a review of the electronic, magnetic and spectroscopic properties of manganese (Mn)-based nanostructures. In the last few years a variety of techniques have been used to prepare mesoscopic transition-metal islands and novel effects associated with the electronic structure in nanoscale systems have…
The encapsulation of metal atoms within Si-based cage clusters leads to stable metal-encapsulated Si cage clusters (Si-cc). The present work investigates the effect of encapsulation of transition metal atoms (TMAs). We show that the filling factor of the d-band of the TMA is the dominant factor determining the structu…
The walls of vanadium oxide nanotubes (VOx-NTs) are built up by vanadate layers between which the structure-directing template, either a primary amine or a diamine with long alkyl chain, is located. The feasibility of various exchange reactions under preservation of the tubular morphology indicates a high structural f…
Oxygen deficient indium−tin-oxide (ITO) nanofibers have been synthesized by using a simple thermal evaporation−oxidation method through a VLS crystal growth mechanism from Sn-rich In−O−Sn ternary alloys droplets.
Thin films of the extracellular matrix protein, collagen, were prepared by adsorbing native or heat-denatured type I collagen onto hexadecanethiol self-assembled monolayers. The resulting films were characterized by atomic force microscopy, ellipsometry, and light microscopy. Denatured collagen formed a topographicall…
A layered manganese oxide nanocomposite (PDDAMO) with poly(diallyldimethylammonium chloride), PDDA, incorporated between manganese oxide sheets, was synthesized by a delamination/reassembling process. The product was characterized by powder X-ray diffraction, elemental analysis, thermal analysis, FT-IR spectroscopy, a…
We report a study of second-order combination and overtone modes in highly ordered pyrolytic graphite (HOPG), in single-wall carbon nanotube (SWNT) bundles and in isolated SWNTs. We found both dispersive and nondispersive Raman bands in the range $1650--2100{\mathrm{cm}}^{\ensuremath{-}1},$ and we show that the appear…
In this paper, the three-dimensional Landau model of austenite-martensite transformations constructed in Part I is generalized to include transformations between an arbitrary number of martensitic variants. The model can incorporate all temperature-dependent thermomechanical properties of both phases for arbitrary cry…
The harmonic Frenkel-Kontorova model is used to illustrate with an exactly solvable example a general technique of mapping a coherently strained epitaxial system with continuous atomic displacements onto a lattice gas model (LGM) with only discrete variables. The misfit strain of the original model is transformed into…
The persistence length of a single, intrinsically rigid polyelectrolyte chain, above the Manning condensation threshold is investigated theoretically in presence of added salt. Using a loop expansion method, the partition function is consistently calculated, taking into account corrections to mean-field theory. Within…
The microscopic structure of a prismatic $\ensuremath{\Sigma}3(101\ifmmode\bar\else\textasciimacron\fi{}0)$ twin boundary in $\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ is characterized by combining ab initio local-density-functional theory, electron energy-loss spectroscopy measuring energy-l…
Kinetics of dislocations is studied by means of computer simulation during intensive plastic deformation. The dynamical effect in the form of soliton-like wave of sharply disrupted interparticle bonds is observed. Along with it, micropores similar to steam bubbles at water boiling are formed. After some deformation th…
Results on the chemical composition, structure and growth kinetics of titanium nitride (TiN) films deposited on mild steel substrates by pyrolytic laser-induced chemical vapour deposition (LCVD) are presented. Golden coloured lines of TiN were deposited from a reactive gas mixture of TiCl4, N2 and H2 using a continuou…