Open AccessPaper-like flexible optically isotropic liquid crystal film for tunable diffractive devices
Author(s) -
Ramesh Manda,
Jeong Hwan Yoon,
Srinivas Pagidi,
S. P. Bhattacharyya,
Dung Thi Thuy Tran,
Young Jin Lim,
Jae Min Myoung,
Seung Hee Lee
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.034876
Subject(s) - materials science , liquid crystal , optics , diffraction efficiency , optoelectronics , diffraction , polarization (electrochemistry) , ray , grating , refractive index , chemistry , physics
We have demonstrated a paper-like diffractive film in which nano-structured liquid crystal droplets are embedded in elastomeric monomer incorporated polymer matrix by polymerization induced phase-separation. The film with voltage-tunable phase grating exhibits an optically isotropic phase with high transparency and an effective chromatic diffraction for an incident white light with sub-millisecond switching time. In addition, the proposed diffractive film is exhibiting excellent chemical stability against organic and inorganic solvents. In this paper, the diffraction properties of test films depending on incident polarization direction, wavelength, and spatial dispersion are characterized. Easy processing and optically isotropic nature of the film imparts potential applications to flexible electro-optic devices that can be widely implemented in wearable photonics.