Results 51 to 60 of about 49,913 (189)

Organic LEDs Based on Bis(8-hydroxyquinoline) Zinc Derivatives with a Styryl Group

Molecules, 2023
For the first time, organic light-emitting diodes (OLEDs) based on bis(8-hydroxyquinoline) zinc with a styryl group (ZnStq) dispersed in poly(N-vinylcarbazole) matrix (ZnStq_R:PVK, where R = H, Cl, OCH3) were fabricated.
Malgorzata Sypniewska, Monika Pokladko-Kowar, Ewa Gondek, Aleksandra Apostoluk, Piotr Kamedulski, Vitaliy Smokal, Peng Song, Junyan Liu, Robert Szczesny, Beata Derkowska-Zielinska   +9 more
doaj   +1 more source

The Lyddane-Sachs-Teller relationship for polar vibrations in materials with monoclinic and triclinic crystal systems [PDF]

, 2016
A generalization of the Lyddane-Sachs-Teller relation is presented for polar vibrations in materials with monoclinic and triclinic crystal systems. The generalization is derived from an eigen displacement vector summation approach, which is equivalent to
Schubert, Mathias
core   +3 more sources

Intrinsic Stokes parameters for 3D and 2D polarization states [PDF]

Journal of the European Optical Society-Rapid Publications, 2015
The second-order characterization of a three-dimensional (3D) state of polarization is provided either by the corresponding 3D coherency matrix or (equivalently) by the associated 3D Stokes parameters. The analysis of the polarization properties that are
Gil J. J.
doaj   +1 more source

Anisotropic optical properties of rhombohedral and tetragonal thin film BiFeO$_3$ phases

, 2015
The anisotropic optical properties of multiferroic BiFeO$_3$ thin films have been determined with Mueller matrix ellipsometry at room-temperature. The full dielectric tensors of tetragonal-like and rhombohedral-like BiFeO$_3$ phases epitaxially grown on ...
Chi, Xiao, Rusydi, Andrivo, Schmidt, Daniel, Wang, Junling, You, Lu   +4 more
core   +1 more source

Regime Map of the Effective Medium Approximation Modelling of Micro-Rough Surfaces in Ellipsometry

Sensors
In this work, we discuss the precision of the effective medium approximation (EMA) model in the data analysis of spectroscopic ellipsometry (SE) for solid materials with micro-rough surfaces by drawing the regime map. The SE parameters ψ (amplitude ratio)
Meijiao Huang, Liang Guo, Fengyi Jiang
doaj   +1 more source

Tunable plasmonic resonances in highly porous nano-bamboo Si-Au superlattice-type thin films [PDF]

, 2018
We report on fabrication of spatially-coherent columnar plasmonic nanostructure superlattice-type thin films with high porosity and strong optical anisotropy using glancing angle deposition. Subsequent and repeated depositions of silicon and gold lead to
Argyropoulos, Christos, Feder, Rene, Hilfiker, Matthew, Kilic, Ufuk, Korlacki, Rafal, Mock, Alyssa, Schubert, Eva, Schubert, Mathias, Sekora, Derek   +8 more
core   +3 more sources

Apparatus and methods for measuring of the film structures homogeneity degree [PDF]

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2009
The designer-technological analysis of ellipsometric parameters measuring and calculation of the film refraction index and thickness scheme is conducted in this article. The flow-chart is developed and the model of apparatus for the film refraction index
Makara V. A., Odarych V. A., Kepich T. Y., Preobragenskaya T. D., Rudenko O. V.   +4 more
doaj  

Dipole-active optical phonons in YTiO_3: ellipsometry study and lattice-dynamics calculations

, 2008
The anisotropic complex dielectric response was accurately extracted from spectroscopic ellipsometry measurements at phonon frequencies for the three principal crystallographic directions of an orthorhombic (Pbnm) YTiO_3 single crystal.
A. A. Mozhegorov, A. M. Stoneham, A. Maljuk, A. V. Boris, B. Keimer, J. L. Gavartin, K. Parlinski, L. Capogna, Michel Couzi, N. N. Kovaleva, P. Popovich, P. Yordanov   +11 more
core   +1 more source

Ordered arrays of metal nanostructures on insulator/metal film: dependence of plasmonic properties on lattice orientation

Nano Express
We study the dependence of the optical response of square lattices of plasmonic nanoparticles on the mutual orientation of the lattice and the plane of incidence of illuminating light.
Eugene Bortchagovsky, Fang Dai, Jia Tang, Ralfy Kenaz, Ilya Milekhin, Yurii Demydenko, Alla Bogoslovska, Pierre-Michel Adam, Ronen Rapaport, Monika Fleischer, Dietrich R T Zahn   +10 more
doaj   +1 more source

Interactions between Cetyltrimethylammonium Bromide Modified Cellulose Nanocrystals and Surfaces: An Ellipsometric Study

Surfaces
The tailoring of the surface properties of cellulose nanocrystals (CNCs) to meet various requirements in environmental, food, and material areas has always been of great interest. In this study, the surface chemistry of CNCs was noncovalently modified by
Xiaoyu Gong, Md Farhad Ismail, Yaman Boluk   +2 more
doaj   +1 more source