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Ultrafast laser induced nanostructured ITO for liquid crystal alignment and higher transparency electrodes

Ultrafast laser induced nanostructured ITO for liquid crystal alignment and higher transparency electrodes
Ultrafast laser induced nanostructured ITO for liquid crystal alignment and higher transparency electrodes

Femtosecond laser nanostructured indium tin oxide (ITO) coated glass is shown to act both as a liquid crystal (LC) alignment layer and as an electrode with higher transparency. The nanopatterns of the 120 nm period were created using ultrashort laser pulses directly on ITO films without any additional spin coating materials or lithography process. Nine regions of laser-induced nanostructures were fabricated with different alignment orientations and various pulse energy levels on top of the ITO confirming the follow-up of the LC director to the line orientation. The device interfacial anchoring energy was found to be ∼ 1 μJ / m2, comparable to the anchoring energy of nematic LC on photosensitive polymers. The transparency as an electrode was found to improve due to the better antireflection and lower absorption expected from a nanostructured surface.

0003-6951
1-6
Solodar, A.
f4f7242b-d740-4c85-b4b1-0bd055d2a102
Čerkauskaite, A.
7f5b1e7a-b9f9-41d2-ab4d-307a46605e43
Drevinskas, R.
23f858b5-8750-4113-ba11-49cfefc3dbb7
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Abdulhalim, I.
99e8f26d-49e2-4b00-9923-5fcc7bc89d78
Solodar, A.
f4f7242b-d740-4c85-b4b1-0bd055d2a102
Čerkauskaite, A.
7f5b1e7a-b9f9-41d2-ab4d-307a46605e43
Drevinskas, R.
23f858b5-8750-4113-ba11-49cfefc3dbb7
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Abdulhalim, I.
99e8f26d-49e2-4b00-9923-5fcc7bc89d78

Solodar, A., Čerkauskaite, A., Drevinskas, R., Kazansky, P.G. and Abdulhalim, I. (2018) Ultrafast laser induced nanostructured ITO for liquid crystal alignment and higher transparency electrodes. Applied Physics Letters, 113 (8), 1-6, [081603]. (doi:10.1063/1.5040692).

Record type: Article

Abstract

Femtosecond laser nanostructured indium tin oxide (ITO) coated glass is shown to act both as a liquid crystal (LC) alignment layer and as an electrode with higher transparency. The nanopatterns of the 120 nm period were created using ultrashort laser pulses directly on ITO films without any additional spin coating materials or lithography process. Nine regions of laser-induced nanostructures were fabricated with different alignment orientations and various pulse energy levels on top of the ITO confirming the follow-up of the LC director to the line orientation. The device interfacial anchoring energy was found to be ∼ 1 μJ / m2, comparable to the anchoring energy of nematic LC on photosensitive polymers. The transparency as an electrode was found to improve due to the better antireflection and lower absorption expected from a nanostructured surface.

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More information

Accepted/In Press date: 12 August 2018
e-pub ahead of print date: 23 August 2018
Published date: 2018

Identifiers

Local EPrints ID: 426597
URI: http://eprints.soton.ac.uk/id/eprint/426597
ISSN: 0003-6951
PURE UUID: 1c35ba25-3aed-4642-a638-ef801ea43fa4
ORCID for A. Čerkauskaite: ORCID iD orcid.org/0000-0002-2476-7797

Catalogue record

Date deposited: 30 Nov 2018 17:30
Last modified: 07 Oct 2020 00:35

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Contributors

Author: A. Solodar
Author: A. Čerkauskaite ORCID iD
Author: R. Drevinskas
Author: P.G. Kazansky
Author: I. Abdulhalim

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