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Photoluminescence of Eu- and Sm-doped LiInO2 phosphor powders
(Physica Scripta, 2012)
Lithium-indium oxide doped with Eu3+ or Sm3+ is prepared by a solid-state chemistry method and its properties are analyzed with respect to its possible application as a phosphor material. X-ray diffraction confirmed that ...
Thermographic properties of a Eu3+-doped (Y0.75Gd0.25)(2)O-3 nanophosphor under UV and x-ray excitation
(Physica Scripta, 2013)
Phosphors are thermographic if their emission characteristics change with temperature. In this paper, we investigated the potential use of a europium-doped (1, 3 and 6 at.% Eu3+) yttrium-gadolinium oxide (Y0.75Gd0.25)(2)O-3 ...
Raman spectroscopy of graphene: doping and mapping
(Physica Scripta, 2013)
In this study, graphene samples prepared by mechanical exfoliation were examined by Raman spectroscopy. The Au electrical contacts, fabricated using photolithography, allowed the application of a gate voltage between ...
Intermixing in Al/Ti multilayer structures induced by nanosecond laser pulses
(Physica Scripta, 2013)
Structural and compositional modifications of multilayered Al/Ti nano-structures induced by nanosecond laser pulses were investigated. Five and ten (Al/Ti) bilayers, with total thicknesses of 130 and 260 nm, respectively, ...
Thermal memory influence on the thermoconducting component of indirect photoacoustic response
(Physica Scripta, 2012)
In this paper, a model of the thermoconducting component of the indirect photoacoustic (PA) response is derived that includes thermal memory properties of the examined material and its fluid environment. A comparison is ...
Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure
(Physica Scripta, 2012)
The investigation presented in this paper was carried out on the nickel-based superalloy, Nimonic 263, a material widely used at elevated temperatures and pressures. The samples were exposed to a Nd3+:YAG pulsed laser, at ...
Propagation of light in photonic lattices with saturable nonlinearity comprising a defect
(Physica Scripta, 2014)
Linear and nonlinear effects accompanying the propagation of visible laser light through geometrically different one-dimensional photonic lattices made of material with a saturable nonlinearity are investigated, both ...
Modeling of dwell time and group delay in dispersive and absorptive media
(Physica Scripta, 2009)
In this paper, a more general expression that describes the relationship between dwell time and group delay is derived. This expression is valid for all kinds of materials, including negative-index metamaterials (NIMs). ...
Modeling of electron relaxation processes and the optical gain in a magnetic-field assisted THz quantum cascade laser
(Physica Scripta, 2012)
We present a detailed model for calculating the optical gain of a quantum cascade laser (QCL) that operates in the terahertz spectral range, when subjected to a strong magnetic field, as well as the total relaxation rates ...
Modeling of tunneling times in anisotropic non-magnetic metamaterials
(Physica Scripta, 2012)
Tunneling times in an anisotropic structure composed of alternately placed layers of two linear, dispersive and absorptive materials are analyzed in this paper. For such a structure, a general expression for the relation ...