Molecular Orientation Change Nearby Topological Defects Observed by Photo-Induced Polarization/Phase Microscopy | Zendy

Haruka Sakanoue | Zendy; Woon Yong Sohn | Zendy; Kenji Katayama | Zendy

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Molecular Orientation Change Nearby Topological Defects Observed by Photo-Induced Polarization/Phase Microscopy

Author(s) -

Haruka Sakanoue,

Woon Yong Sohn,

Kenji Katayama

Publication year - 2019

Publication title -

acs omega

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b01611

Subject(s) - orientation (vector space) , phase change , polarization (electrochemistry) , topological defect , materials science , polarization microscopy , topology (electrical circuits) , microscopy , polarized light microscopy , optics , condensed matter physics , physics , chemistry , geometry , mathematics , engineering physics , combinatorics

Topological defects in liquid crystals (LCs) have been intensively studied and intentionally generated in an organized way recently because they could control the alignment and motion of LCs. We studied how the topological defects could change the molecular orientation/alignment from the observation of photo-induced orientation change of a photo-responsive LC. The photo-induced dynamics was observed by an LED-induced time-resolved polarization/phase microscopy with white light illumination. From the color image sequence, we found that the molecular orientation change started from the topological defects and the orientation change propagated as a pair of defects and was connected, and further disordering was induced as a next step after the initial orientation change finished.

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