Materials Literature
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We report Q-band ENDOR of (1)H, (14)N, and (11)B at the g( parallel) extreme of the EPR spectrum of bis(trispyrazolylborate) cobalt(II) [Co(Tp)(2)] and two structural analogs. This trigonally symmetric, high-spin (hs) S = 3/2 Co(II) complex shows large unquenched ground-state orbital angular momentum, which leads to h…
We investigate the effects of ${\mathrm{C}}_{60}$ fullerene encapsulation on the radial breathing mode (RBM) of semiconducting single-wall carbon nanotubes (SWCNTs) under tunable laser excitations. The changes in the RBM frequencies after ${\mathrm{C}}_{60}$ insertions show characteristic behavior; higher frequency sh…
Spar Energie, lächle! Sehr gut leitende zinnreiche Indiumzinnoxid(ITO)-Komposite lassen sich aus der molekularen Vorstufe Sn(tBuO)3In einfach herstellen. Die nicht weiter bearbeiteten transparenten und hochleitenden dünnen Filme auf Glassubstraten sind atomar flach und liefern die bisher besten Ergebnisse in ITO-basie…
We investigated the optical properties of (NBu(4))(3)[Ni(NCS)(5)], a pentacoordinate Ni compound, and compared the results with the more traditional hexacoordinate analogue (NEt(4))(4)[Ni(NCS)(6)]. On the basis of our complementary electronic structure calculations, the color properties of this high spin complex can b…
Grafting of poly(acrylic acid) (PAA) onto an aluminum surface was successfully achieved by free radical polymerization of acrylic acid using typical radical initiators, benzoyl peroxide and 2,2'-azobisisobutyronitrile. Both spotlike and brush morphologies were achieved. A complete coverage of PAA on an aluminum surfac…
Purpose Magnetostrictive alloys are widely used in actuator and sensor applications. The purpose of this paper is to developed a realistic physical model and a numerical computational scheme for their precise computation. Design/methodology/approach The main step in the physical modeling is the decomposition of the me…
Customized pores are smart components that find challenging applications in a variety of fields including purification membranes and biosensing systems. The incorporation of recognition probes within pores is therefore a challenge, due to the technical difficulty of delimiting the area functionalized and obtaining the…
DOI: 10.1002/adma.200800761 In the above article, a key reference was wrongly replaced in the corrections. This reference should appear as [21a]: A. L. Vázquez de Parga, F. Calleja, B. Borca, M. C. G. Passeggi, Jr., J. J. Hinarejos, F. Guinea, R. Miranda, Phys. Rev. Lett. 2008, 100, 056807. This reference has been rei…
In this study, the free-end distribution of a polystyrene self-assembled brush in good solvent (toluene- d ) is directly probed by use of neutron reflectometry. This is accomplished by the selective deuterium enrichment of polystyrene chains so that all but the last 16% of the monomers of each chain are contrast-match…
Coordinate analysis of the multiple phase transitions in hexagonal YMnO(3) leads to the prediction of a previously unknown aristotype phase, with the resulting phase-transition sequence: P6(3)'cm'(e.g.) <--> P6(3)cm <--> P6(3)/mcm <--> P6(3)/mmc <--> P6/mmm. Below the Néel temperature T(N) approximately = 75 K, the st…
Abstract The ionic liquid crystals N‐decyl‐ N ‐methylpyrrolidinium bromide, [C 10 mpyr]Br, and N‐dodecyl‐ N ‐methylpyrrolidinium bromide, [C 12 mpyr]Br have been synthesized. X‐ray diffraction single crystal structure analyses {[C 10 mpyr]Br: monoclinic, P 2 1 / n , no. 14, Z = 12, Pearson code mP588, a = 19.446(2) Å,…
Pulse rate: The size of conducting-polymer microspheres is controlled by adjusting the width of the electric pulses in a pulsed sonoelectrochemical polymerization process (see picture). A solution-cast film of the microspheres on an electrode shows a sharp redox response versus potential.
In this work, we measure the electrical conductance and temperature of individual, suspended quasi-metallic single-walled carbon nanotubes under high voltage biases using Raman spectroscopy, while varying the doping conditions with an applied gate voltage. By applying a gate voltage, the high-bias conductance can be s…
We use molecular dynamics simulations to understand the mechanisms of polarization switching in ferroelectric ${\text{BaTiO}}_{3}$ achieved with external electric field. For tetragonal and orthorhombic ferroelectric phases, we determine the switching paths and show that polarization rotation through intermediate monoc…
Detailed knowledge of the mechanical properties of nanocrystals is crucial for understanding the behavior of micromachining devices. Determining experimentally the elastic and plastic properties of nanocrystals can be very challenging. In this work, we present molecular-dynamics simulations of mechanical properties of…
Nd 1− x Ca x CrO 3 (0≤ x ≤0.25) solid solutions are synthesized using a two‐step calcination solid‐state reaction method and can potentially be used as interconnect applications in solid oxide fuel cells (SOFCs). The lattice parameters and unit cell volume decrease with an increase of the Ca 2+ dopant concentration at…
Polyaniline (PANI) micro/nanosheets are successfully synthesized by a template-free method without using any conventional oxidants. Scanning electron microscopy, transmission electron microscopy, and FT-IR spectroscopy are applied to characterize the products. By investigating the morphologies and chemical structures…
Tight-binding (TB) calculation for zigzag boron nitride nanoribbons (ZBNNRs) is presented. The TB parameters are obtained so as to reproduce density functional calculation. The analytical expressions of boron (nitrogen) edge states that lie near the bottom (top) of conductance (valence) bands are given. The modificati…
Thermal transport measurements have been performed on single-crystalline Co-doped BaFe2As2 down to 0.1 K and under magnetic fields up to 7 T. Significant peak anomalies are observed in both thermal conductivity and thermal Hall conductivity below Tc as an indication of the enhancement of the quasiparticle mean-free pa…
Many of the OECD Test Guidelines are applicable, with conditions in some cases, while some are inadequate for testing Manufactured Nanomaterials (MN) as measuring, dosing, delivery and tracking nanomaterials are not reliably accomplished at this stage. Therefore, the review of OECD Test Guidelines reinforced the need…