Materials Literature
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Effects of radiation-induced amorphization of smectite were investigated using artificial irradiation. Beams of 925 MeV Xenon ions with radiation dose reaching 73 MGy were used to simulate the effects generated by alpha recoil nuclei or fission products in the context of high level nuclear waste repository. Amorphizat…
Novel silica nanoparticles exhibiting near-infrared (NIR) and dual NIR-visible emission were synthesized according to reverse microemulsion procedure through the encapsulation of Yb(III) complex with p -sulfonatothiacalix[4]arene (Yb) and [Ru(dipy) 3 ]Cl 2 (Ru) as NIR- and visible-emitting luminophores into silica mat…
Cu(I)-mediated annulation of meso,meso'-1,3-butadiyne-bridged Zn(II) diporphyrin with various amines efficiently provided meso,meso'-pyrrole-bridged Zn(II) diporphyrins. Notable intramolecular electronic interactions in these diporphyrins were observed. A starburst porphyrin pentamer was synthesized via Suzuki-Miyaura…
Processing of fine powders is a relevant operation in many industries, from pharmaceuticals to material synthesis. As the size of the particles decreases, adhesive forces become important and can have a nontrivial, but difficult to predict, impact on the mixing/segregation tendency of the material. The aim of this wor…
Atlantic salmon (Salmo salar L.) vertebral bone displays plasticity in structure, osteoid secretion and mineralization in response to photoperiod. Other properties of the vertebral bone, such as mineral content and mechanical strength, are also associated with common malformations in farmed Atlantic salmon. The biolog…
The Au/Porous silicon structure (Au/PS) was developed as hydrogen fuel cell. The use of a porous silicon filled with hydrochloric acid as a proton-conducting membrane and thin gold film as a catalyst in Au/PS/Si fuel cell is demonstrated. The devices were fabricated by first creating 10–20 µm thick porous silicon laye…
Interfacial polymerization approach was developed for the fabrication of the polyaniline micro/nano capsules in the static condition or with stirring. The effects of the emulsion composition such as the amounts of the surfactant, inert solvent (toluene), monomer, and water on the formation of the intact polyaniline ca…
The third dimension comes to the rescue in the synthesis of laterally confined 2D crystals. Graphene-type sheets of layered metal(IV) chalcogenides are stabilized by stacking to form nano-objects that resemble a coin roll. Mismatch strain between NbS2 and WS2 lattices is important for the stabilization of the coin-rol…
In this paper, we extend the scalar wave propagation method (WPM) to vector fields. The WPM [Appl. Opt.32, 4984 (1993)] was introduced in order to overcome the major limitations of the beam propagation method (BPM). With the WPM, the range of application can be extended from the simulation of waveguides to simulation…
Three new chloro-functionalized lanthanide(III) bis(disiloxanediolate) complexes, [{(Ph 2 SiO) 2 O} 2 {Li(DME)} 2 ]Nd(DME)Cl ( 3 ), [{(Ph 2 SiO) 2 O} 2 {Li(THF) 2 } 2 ]HoCl·2THF ( 4 ), and [{(Ph 2 SiO) 2 O} 2 {Li(THF) 2 } 2 ]ErCl·2THF ( 5 ) have been prepared by the treatment of anhydrous lanthanide trichlorides, LnCl…
A multilayer film consisting of poly(acrylic acid) (PAA) and an azobenzene-containing surfactant (AzoTEA) was fabricated via a layer-by-layer assembly technique. The micellar structure favored by AzoTEA while in solution results in a bilayer structure when deposited on a substrate surface. This aggregation conversion…
Local environments surrounding magnetic ions in Mn- or Cr-doped and hydrogenated amorphous Si films have been determined using extended x-ray absorption fine structure (EXAFS) method. These films are found to be ferromagnetic with high Curie temperatures above 250 K and therefore are of tremendous interest for practic…
The present study reports electro-optical parameters of two ferroelectric liquid crystals (FLCs) with the addition of anthraquinone dye D37 as a function of temperature. Accordingly, the parameters appearing in the switching model, the spontaneous polarization, switching time, and rotational viscosity have been determ…
The synthesis of the 1st generation dendrimer 1,3,5-{trans-[Ru(C≡C-3,5-(trans-[Ru(C≡CPh)(dppe)(2) (C≡CC(6) H(4) -4-(E)-CHCH)])(2) C(6) H(3) )(dppe)(2) (C≡CC(6) H(4) -4-(E)-CHCH)]}(3) C(6) H(3) proceeds by a novel route that features Emmons-Horner-Wadsworth coupling of 1,3,5-C(6) H(3) (CH(2) PO(OEt)(2) )(3) with tran…
The adhesion strength between surface-modified vulcanized ethylene propylene diene methylene (EPDM) rubber and unmodified natural rubber (NR) was investigated by a 180° peel test. Surface modification of EPDM vulcanizate was carried out by two different techniques: (a) irradiation of the surface by gamma radiation in…
The two cobalt hexagonal perovskites 6H-Ba(6)Co(6)F(0.93)O(16) and 10H-Ba(5)Co(5)F(0.77)O(12.88) were prepared, and their structures were examined by X-ray and neutron diffraction and by (19)F solid state NMR spectroscopy. The magnetic and transport properties of these compounds were probed by magnetic susceptibility…
By using the dielectric relaxation method proposed recently by Casalini and Roland (2009 Phys. Rev. Lett. 102 035701), we were able to determine the structural α-relaxation times deep in the glassy state of the pharmaceutical, Telmisartan. Normally, deep in the glassy state τ(α) is so long that it cannot be measured b…
We study the effects of the structural corrugation or rippling on the electronic properties of undoped armchair graphene nanoribbons (AGNRs). First, reanalyzing the single corrugated graphene layer we find that the two inequivalent Dirac points (DPs) move away from each other. Futhermore, the Fermi velocity ${v}_{F}$…
The mechanism of the dehydrogenation−rehydrogenation of Ti-doped NaAlH 4 was investigated through X-ray diffraction (XRD) studies and Doppler broadening measurements of positron annihilation. Phase transformations during dehydrogenation and hydrogenation half-cycles were studied by the Rietveld analysis of XRD profile…
In this paper, we present two different types of polymer/metal oxide nanocrystals hybrid photovoltaics. One is the poly(3-hexylthiophene) (P3HT)/TiO2nanorods hybrid bulk heterojunction (BHJ) solar cell and the other is a nanostructured ZnO/P3HT hybrid solar cell. In a BHJ hybrid solar cell, the dispersed semiconductin…