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Polarization Gratings Spontaneously Formed from a Helical Twist‐Bend Nematic Phase
Author(s) -
Vaupotič Nataša,
Ali Muhammad,
Majewski Paweł W.,
Gorecka Ewa,
Pociecha Damian
Publication year - 2018
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201800360
Subject(s) - liquid crystal , polarization (electrochemistry) , optics , materials science , bent molecular geometry , phase (matter) , twist , grating , diffraction grating , optoelectronics , chemistry , physics , geometry , organic chemistry , mathematics , composite material
Spontaneous formation of polarization gratings by liquid crystalline phase made of bent dimeric molecules is reported. The grating is formed within the temperature range of the twist bend modulated nematic phase, N TB , without the necessity to pattern the cell surfaces, therefore the modulated nematic phase is a promising candidate for low‐cost modulators and beam steering devices, the polarization properties of which depend on temperature. In addition, the study of the diffracted light properties turns out to be a sensitive measuring technique for determination of the 3D spatial variation of the optic axis in the cell.