Autor: Zenkova, C - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The use of motion peculiarities of particles of the Rayleigh light scattering mechanism for defining the coherence properties of optical fields
Autorzy:: Zenkova, C
Soltys, I
Angelsky, P
Powiązania:: https://bibliotekanauki.pl/articles/173481.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: degree of coherence
nanoparticles
Poynting vector
light scattering
Opis:: The paper proposes an alternative possibility for using the motion dynamics of tested particles of the Rayleigh light-scattering mechanism for estimating the degree of coherence of mutually orthogonal fields. The velocity of nanoparticles motion in the inhomogeneous optical field is chosen as the measuring parameter for diagnostics. The direct connection between the velocity of nanoscale particle motion and the degree of coherence of interacting fields is analytically demonstrated.
Źródło:: Optica Applicata; 2013, 43, 2; s. 297-312
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Pseudo-phase mapping of speckle fields using 2D Hilbert transformation
Autorzy:: Zenkova, C. Y.
Gorsky, M. P.
Ryabiy, P. A.
Powiązania:: https://bibliotekanauki.pl/articles/174971.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: speckle field
singular points
saddle points
phase problem
Opis:: The use of a "window" 2D Hilbert transform for the reconstruction of the phase distribution of the intensity of a speckle field is proposed. It is shown that the advantage of this approach consists in the invariance of a phase map to a change of the position of the kernel of transformation and in the possibility to reconstruct the structure-forming elements of the skeleton of an optical field, including singular points and saddle points. We demonstrate the possibility to reconstruct the equi-phase lines within a narrow confidence interval, and introduce an additional algorithm for solving the phase problem for random 2D intensity distributions.
Źródło:: Optica Applicata; 2016, 46, 1; 153-162
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Optical torques and forces in birefringent microplate
Autorzy:: Zenkova, C. Y.
Ivanskyi, D. I.
Kiyashchuk, T. V.
Powiązania:: https://bibliotekanauki.pl/articles/174384.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: evanescent wave
spin angular momentum
birefringent microplate
Opis:: The paper presents a theoretical model for calculating the optical forces caused by the density of spin and orbital momentum and optical torque, caused by the angular momentum typical for a circularly polarized beam or a circular component of an elliptically polarized beam. Total internal reflection at the plate–air interface implemented by the birefringent plate spattered with nanoparticles of gold creates the conditions for the allocation of the predominant action of the vertical spin of the evanescent wave, which has recently been predicted theoretically.
Źródło:: Optica Applicata; 2017, 47, 3; 483-493
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Different approaches to phase restoration of distant complex optical fields
Autorzy:: Zenkova, C. Y.
Gorsky, M P
Ryabiy, P A
Gruia, I
Powiązania:: https://bibliotekanauki.pl/articles/173605.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: phase skeleton
saddle points
gradient lines
Opis:: The paper presents principal approaches to diagnosing the structure forming skeleton of the complex optical field. An analysis of optical field singularity algorithms depending on intensity discretization and image resolution has been carried out. An optimal approach is chosen, which allows to bring much closer the solution of the phase problem of localization of speckle-field special points. A possible approach to diagnosing the signs of zero amplitudes has been offered.
Źródło:: Optica Applicata; 2015, 45, 2; 139-150
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Controlling and manipulation of red blood cells by evanescent waves
Autorzy:: Angelsky, O. V.
Zenkova, C. Y.
Maksymyak, P. P.
Maksymyak, A. P.
Ivanskyi, D. I.
Powiązania:: https://bibliotekanauki.pl/articles/174453.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: erythrocytes
evanescent wave
spin momentum
Opis:: A theoretical model for describing the influence of the evanescent wave on the red blood cell (RBC, erythrocyte) in the blood plasma is suggested in this research work. Two optical schemes for creating an evanescent wave and the features of the created field’s effect on the erythrocyte are considered. The conditions for the formation of optical forces and optical momentum, in particular, of the vertical spin of the evanescent wave, which causes a transverse displacement of the erythrocyte, are proposed. The use of a linearly polarized plane wave with azimuth of ±45° in a model experiment, specially suggested in this work, allows for visualization of the transverse controlled motion of the erythrocyte, which enables to claim about new possibilities for controlling microobjects in biology and medicine.
Źródło:: Optica Applicata; 2019, 49, 4; 597-611
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

Artykuł

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