Materials Literature
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Six-fold configurational anisotropy was studied in Permalloy triangles, in which the shape symmetry order yields two energetically non-degenerate micromagnetic configurations of the spins, the so-called "Y" and "buckle" states. A twelve pointed switching astroid was measured using magneto-optical experiments and succe…
A series of infrared-active optical phonons have been detected in type-I clathrate ${\text{Ba}}_{8}{\text{Ga}}_{16}{\text{Ge}}_{30}$ by terahertz time-domain spectroscopy. The conductivity spectra with the lowest-lying peaks at 1.15 and 1.80 THz are identified with the so-called rattling phonons, i.e., optical modes o…
We report detailed measurements of composition as well as temperature dependence of the phonon density of states in a new series of FeAs compounds with composition ${\text{CaFe}}_{1\ensuremath{-}x}{\text{Co}}_{x}\text{AsF}$ $(x=0,0.06,0.12)$. The electronic-structure calculations for these compounds show that bands ne…
Both amorphous and crystalline materials frequently exhibit low-temperature specific heats in excess of what is predicted using the Debye model. The signature of this excess specific heat is a peak observed in $C/{T}^{3}$ versus $T$. To understand the curious absence of long-range ordering of local distortions in the…
A series of lanthanide complexes [LnCl(x)(bpy)(y)(H(2)O)(z)]Cl(3-x)(H(2)O)(n)(EtOH)(m) (Ln = Eu, Gd, Tb; x = 1, 2; y = 1, 2; z = 2-4) with different numbers of 2,2'-bipyridine (bpy), chloride ions, and water molecules in the inner coordination sphere were synthesized and investigated with the aim of relating their mol…
We report a facile wet-chemical route for the fabrication of a superhydrophobic ZnO nanowire surface modified with fatty acids. A systematic study was performed on the relationship between carbon chain length of fatty acid and wetting states of well-aligned ZnO nanowire arrays. The wettability of the ZnO nanowire arra…
Solid oxide fuel cells (SOFC) have the advantage of being able to operate with fuels other than hydrogen. In particular, liquid fuels are especially attractive for powering portable applications such as small power generators or auxiliary power units, in which case the direct utilization of the fuel would be convenien…
The abrupt halt of a bumble bee's flight when it impacts the almost invisible threads of an orb web provides an elegant example of the amazing strength and toughness of spider silk. Spiders depend upon these properties for survival, yet the impressive performance of silk is not limited solely to tensile mechanics. Her…
We show that specific heat ${C}_{p}$ has non-Debye behavior for glassy states in half-doped manganites. Irrespective of the magnetic order or electronic states, these magnetic glasses have higher ${C}_{p}$ compared to their equilibrium counterparts. The excess ${C}_{p}$ contributed by the glassy state varies linearly…
We have investigated ozone adsorption on graphene using the ab initio density functional theory method. Ozone molecules adsorb on graphene basal plane with binding energy of 0.25 eV, and the physisorbed molecule can chemically react with graphene to form an epoxide group and an oxygen molecule. The activation energy b…
Data about stability areas of Nd1-xDyxFe3(BO3)4 trigonal phases in fluxes on the bismuth trimolibdate basis and feature of labile phase dynamics conditions is noted. Group growth conditions of these phases single crystals on seeds and at spontaneous nucleation in a thin layer of flux on crystal carrier are described.…
We demonstrate the applicability of studying the proton dynamics in proton-conducting perovskites using neutron spin-echo spectroscopy, a powerful method hitherto neglected for studies of the proton dynamics in ceramic proton conductors. By combining our neutron spin-echo results of hydrated BaZr0.90Y0.10O2.95 with re…
Whispering Gallery modes in bulk cylindrical Gallium Arsenide and Gallium Phosphide samples have been examined both in darkness and under white light at cryogenics temperatures < 50 K. In both cases persistent photoconductivity was observed after initially exposing semiconductors to white light from a halogen lamp. Ph…
The dielectric environment of thin semiconductor nanowires can affect the charge transport properties inside the wire. In this work, it is shown that Coulomb impurity scattering inside thin nanowires can be damped strongly by coating the wire with a high-k dielectric. This will lead to an increase in the mobility of f…
The paper shows that inhomogeneity of translation properties of condensate leads to the interaction of local order parameter (OP) and its compensating field which is similar to gauge fields in the field theory. Dynamic models were considered in the theory of phase transitions to inhomogeneous state with local translat…
Many ordered adlayer structures have been reported for CO on the (100) surfaces of Pt, Rh, Pd, Ni and Cu. Also, some ordered structures are known for NO on the same surfaces. The current review includes all those articles that give a graphical representation of the position of the adsorbates inside the unit cell. The…
1. Tutorial Reviews 1.1 Coupling Chemistries for the Modification and Functionalization of Surfaces to Create Advanced Bio-interfaces, H. Schonherr 1.2 Surface Plasmon Resonance-Based Biosensors, J. Dostalek, Chun Jen Huang and W. Knoll 1.3 Surface Modification and Adhesion, R. Forch 1.4 Modern Biological Sensors, A.T…
Metal clusters have been investigated rather intensely for both fundamental and technological reasons. In this work we report the results of plane-wave density functional theory calculations of Fe, Co, and Ni adatoms and dimers adsorbed on graphene. We study both homonuclear and heteronuclear dimers, and the latter in…
Abstract The development of a novel nucleophilic thio‐bromo “Click” reaction, specifically base‐mediated thioetherification of thioglycerol with α‐bromoesters, is reported. Combination of this thio‐bromo click reaction with subsequent acylation with 2‐bromopropionyl bromide provides an iterative two‐step divergent gro…
Abstract The development of a novel nucleophilic thio‐bromo “Click” reaction, specifically base‐mediated thioetherification of thioglycerol with α‐bromoesters was reported in an earlier article. The combination of this thio‐bromo click reaction with subsequent acylation with 2‐bromopropionyl bromide provides an iterat…