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    Wyświetlanie 1-4 z 4
    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
    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
    Tytuł:
    Review on the structured light properties : rotational features and singularities
    Autorzy:
    Angelsky, Oleg V.
    Bekshaev, Aleksandr Ya.
    Mokhun, Igor I.
    Vasnetsov, Mikhail V.
    Zenkova, Claudia Yu.
    Hanson, Steen G.
    Zheng, Jun
    Powiązania:
    https://bibliotekanauki.pl/articles/2063906.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    singularity spin and orbital angular momentum
    energy flow
    structured light
    optical vortices
    Opis:
    The review exposes basic concepts and manifestations of the singular and structured light fields. The presentation is based on deep intrinsic relations between the singularities and the rotational phenomena in light; it involves essentially the dynamical aspects of light fields and their interactions with matter. Due to their topological nature, the singularities of each separate parameter (phase, polarization, energy flow, etc.) form coherent interrelated systems (singular networks), and the meaningful interconnections between the different singular networks are analysed. The main features of singular-light structures are introduced via generic examples of the optical vortex and circular vortex beams. The review describes approaches for generation and diagnostics of different singular networks and underlines the role of singularities in formation of optical field structures. The mechanical action of structured light fields on material objects is discussed on the base of the spin-orbital (canonical) decomposition of electromagnetic momentum, expressing the special roles of the spin (polarization) and spatial degrees of freedom. Experimental demonstrations spectacularly characterize the topological nature and the immanent rotational features of the light-field singularities. The review is based on the results obtained by its authors with a special attention to relevant works of other researchers.
    Źródło:
    Opto-Electronics Review; 2022, 30, 2; art. no. e140860
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    JMATRIX - package for relativistic J-MATRIX calculations in elastic scattering of electrons from model potentials
    Autorzy:
    Syty, P.
    Sienkiewicz, J. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1940696.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska
    Tematy:
    J-matrix method
    relativistic
    electron elastic scattering
    phase shifts
    Dirac partial-waves analysis
    differential
    total
    momentum transfer
    spin polarization cross sections
    Opis:
    We present a software package JMATRIX, consisting of two computer codes written in FORTRAN 95 and parallelized with OpenMP, implementing the so-called J-matrix method, applied to elastic scattering of electrons on the radial potential, vanishing faster than the Coulomb potential. In the J-matrix method, the physical scattering problem is replaced by using a well-defined model which is solved analytically. The presented software implements both non-relativistic and relativistic versions of the method, and allows calculations of scattering phase shifts as well as cross sections, in cases when the scattering potential is given through an analytical formula. We performed test calculations for the scattering potential modeled as a truncated Coulomb potential. We show that the numerical phase shifts to converge as we increase the size of the basis used to truncate the scattering potential, and that the method is suitable for calculating the total differential momentum transfer and spin polarization cross sections, using the partial-wave analysis.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2017, 21, 1; 17-42
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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