Electrically Tunable Printed Bifocal Liquid Crystal Microlens Arrays

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Abstract: In this communication, the fabrication of electrically tunable bifocal liquid crystal (LC) microlenses using drop‐on‐demand inkjet printing is demonstrated. By treating the glass substrate with a homeotropic alignment layer, the printed droplets are found to form plano‐convex lenses with focal lengths in the range of 220–463 µm, depending upon the number of droplets deposited at each location on the substrate. The precision of the process allows for the microlenses to be deposited in between in‐plane indium tin oxide electrodes. In the presence of a high amplitude electric field, the director within the LC droplets is observed to align with the direction of the applied field, but without any accompanying distortion in the droplet profile. However, these changes in the LC director alignment are found to result in a bifocal behavior rather than a continuous change in the focal length. It is also found that there exists a range of voltages for which two focal planes are observed.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Electrically Tunable Printed Bifocal Liquid Crystal Microlens Arrays ; volume:7 ; number:16 ; year:2020 ; extent:6
Advanced materials interfaces ; 7, Heft 16 (2020) (gesamt 6)

Urheber
Kamal, Waqas
Lin, Jia‐De
Elston, Steve J.
Ali, Taimoor
Castrejón‐Pita, Alfonso A.
Morris, Stephen M.

DOI
10.1002/admi.202000578
URN
urn:nbn:de:101:1-2022052714001377029730
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:24 MESZ

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Beteiligte

  • Kamal, Waqas
  • Lin, Jia‐De
  • Elston, Steve J.
  • Ali, Taimoor
  • Castrejón‐Pita, Alfonso A.
  • Morris, Stephen M.

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