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Liquid Crystal Flat Optical Elements Enabled by Molecular Photopatterning with Plasmonic Metamasks

Yu, Hao
http://rave.ohiolink.edu/etdc/view?acc_num=kent1595196794159313

Abstract Details

2020, PHD, Kent State University, College of Arts and Sciences / Chemical Physics.
Spatially variant molecular orientations are central to the functionalities of various liquid crystal applications such as Pancharatnam lens, gratings, command of active matter, and programmable stimulus-responsive morphing of liquid crystal polymers. In this dissertation, I will present a photopatterning technique which allows for high resolution and high throughput patterning of arbitrary molecular orientations by using plasmonic metamasks. Unlike traditional photomasks, the plasmonic metamasks would generate structured light with spatially variant patterns of both intensity and polarization orientations. By projecting such structured light onto photoactive thin films of azo-dyes, orientation patterns can be imprinted in the azo-dyes and then transfer to the bulk of the liquid crystals. By using this photopatterning technique, transmissive/reflective liquid crystal lenses are designed and fabricated. Design principles and advantages of liquid crystal flat optical elements are detailed discussed.
Qi-Huo Wei (Committee Chair)
Oleg Lavrentovich (Committee Member)
Elizabeth Mann (Committee Member)
Lu Lu (Committee Member)
Hamza Balci (Committee Member)
Songping Huang (Committee Member)
112 p.
Optics
Liquid Crystals; Plasmonics; Pancharatnam-Berry Phase; Geometric Phase; Lens; Cholesteric Liquid Crystals

Recommended Citations

Citations

  • Yu, H. (2020). Liquid Crystal Flat Optical Elements Enabled by Molecular Photopatterning with Plasmonic Metamasks [Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1595196794159313

    APA Style (7th edition)

  • Yu, Hao. Liquid Crystal Flat Optical Elements Enabled by Molecular Photopatterning with Plasmonic Metamasks. 2020. Kent State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1595196794159313.

    MLA Style (8th edition)

  • Yu, Hao. "Liquid Crystal Flat Optical Elements Enabled by Molecular Photopatterning with Plasmonic Metamasks." Doctoral dissertation, Kent State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1595196794159313

    Chicago Manual of Style (17th edition)

kent1595196794159313
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© 2020, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.