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Influence of annealing on X-ray diffraction of natural alexandrite
(J C P D S-int Centre Diffraction Data, 2002-06-01)
In this work we present results of X-ray diffraction using powder method, on natural alexandrite samples from Minas Gerais State (Brazil), as a function of a sequence of annealing. From these measurements we determine ...
Optical properties of graphene nanoflakes: Shape matters
(American Institute of Physics, 2016-06-09)
In recent years there has been significant debate on whether the edge type of graphene nanoflakes (GNFs) or graphene quantum dots (GQDs) are relevant for their electronic structure, thermal stability, and optical properties. ...
Investigation of the optical absorption of a magnetic colloid from the thermal to the electronic time-scale regime: measurement of the free-carrier absorption cross-section
(OPTICAL SOC AMERWASHINGTON, 2012)
The free-carrier absorption cross-section sigma of a magnetic colloid composed of magnetite nanoparticles dispersed in oil is obtained by using the Z-scan technique in different experimental conditions of the laser beam. ...
Synthesis, characterization, structural refinement and optical absorption behavior of PbWO(4) powders
(Elsevier B.V., 2008-04-25)
The present paper describes the synthesis, characterization, structural refinement and optical absorption behavior of lead tungstate (PbWO(4)) powders obtained by the complex polymerization method heat treated at different ...
Absorption and emission properties of LBL PPV films deposited on ITO electrodes
(ELSEVIER SCIENCE BV, 2008)
In this work we studied the properties of absorption and emission line shape of layer-by-layer (LBL) poly(p-phenylene vinylene) (PPV) on indium-tin oxide (ITO) electrode. To minimize the PPV thermal conversion effects ...
A simple method to determine the optical constants and thicknesses of ZnxCd1-xS thin films
(Elsevier Science SaLausanneSuíça, 1996)
Magnetic and optical characterization of Mn-doped PbS nanocrystals supported in oxide glass matrix
(ELSEVIER SCIENCE SA, 2009)
The evidence of successful growth of Mn-doped PbS (Pb(1-x)Mn(x)S) nanocrystals (NCs) in SiO(2)-Na(2)CO(3)-Al(2)O(3)-PbO(2)-B(2)O(3) template, using the fusion method, is reported on in this study. The as-grown Pb(1-x)Mn(x)S ...
Optical birefringence induced by two-photon absorption in polythiophene bearing an azochromophore
(ELSEVIER SCI LTD, 2008)
We carried out experiments of induced birefringence via two-photon absorption in spin-coated films of the conjugated polymer poly[2-[ethyl-[4-(4-nitro-phenylazo)-phenyl] -amino]-ethane (3-thienyl)ethanoate], PAzT, at 680 ...
Optical and Physicochemical Properties of Silica-Supported TiO2 Photocatalysts
(Wiley, 2006-12)
Commercial applications of photocatalysis in slurry reactors employing titanium dioxide particles present the disadvantage of the additional cost associated with the downstream catalyst separation. In past years a significant ...
Exponential absorption edge and disorder in Column IV amorphous semiconductors
(Amer Inst PhysicsMelvilleEUA, 1998)