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Compact optical device for measuring liquid crystal elastic and dynamic properties

Compact optical device for measuring liquid crystal elastic and dynamic properties
Compact optical device for measuring liquid crystal elastic and dynamic properties
We present a prototype of compact device for all-optical measurements of the elastic and dynamic properties of nematic liquid crystals. The device is based on a standard cross-polarized optical set-up and by using a three-step measurement protocol and a corresponding fitting procedure, it simultaneously determines the following LC parameters: the splay and bend elastic constants, K1 and K3, the rotational viscosity γ1, and the combination of Leslie viscosity coefficients α4+ α5. Moreover, by taking sampled measurements across the area of a LC cell, the map profile of the LC layer thickness and average pre-tilt on the surfaces can be determined.
Podoliak, Nina
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Perivolari, Eleni
a65ec857-cf22-497d-bdb4-66fb449751d3
Bennett, Thomas
149b33f3-d18f-4a77-bee1-7575951ac8c6
Proctor, Matthew B.
fe521936-b99a-435e-bbdc-d09f114b5943
D'alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Regrettier, Thomas
3527887d-fc03-439a-96f8-d37dda07e9cd
Heiser, Thomas
c7ab9914-611b-4ded-bd4b-a3524b33f794
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Perivolari, Eleni
a65ec857-cf22-497d-bdb4-66fb449751d3
Bennett, Thomas
149b33f3-d18f-4a77-bee1-7575951ac8c6
Proctor, Matthew B.
fe521936-b99a-435e-bbdc-d09f114b5943
D'alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Regrettier, Thomas
3527887d-fc03-439a-96f8-d37dda07e9cd
Heiser, Thomas
c7ab9914-611b-4ded-bd4b-a3524b33f794
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327

Podoliak, Nina, Perivolari, Eleni, Bennett, Thomas, Proctor, Matthew B., D'alessandro, Giampaolo, Regrettier, Thomas, Heiser, Thomas and Kaczmarek, Malgosia (2017) Compact optical device for measuring liquid crystal elastic and dynamic properties. SPIE Optics + Photonics: Liquid Crystals XXI, San Diego, California, United States. 06 - 10 Aug 2017.

Record type: Conference or Workshop Item (Poster)

Abstract

We present a prototype of compact device for all-optical measurements of the elastic and dynamic properties of nematic liquid crystals. The device is based on a standard cross-polarized optical set-up and by using a three-step measurement protocol and a corresponding fitting procedure, it simultaneously determines the following LC parameters: the splay and bend elastic constants, K1 and K3, the rotational viscosity γ1, and the combination of Leslie viscosity coefficients α4+ α5. Moreover, by taking sampled measurements across the area of a LC cell, the map profile of the LC layer thickness and average pre-tilt on the surfaces can be determined.

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Published date: 7 August 2017
Venue - Dates: SPIE Optics + Photonics: Liquid Crystals XXI, San Diego, California, United States, 2017-08-06 - 2017-08-10

Identifiers

Local EPrints ID: 413797
URI: https://eprints.soton.ac.uk/id/eprint/413797
PURE UUID: 09ef9067-edc2-48f3-a756-7dd530c11cc8
ORCID for Nina Podoliak: ORCID iD orcid.org/0000-0002-3146-0355
ORCID for Giampaolo D'alessandro: ORCID iD orcid.org/0000-0001-9166-9356

Catalogue record

Date deposited: 06 Sep 2017 16:31
Last modified: 14 Mar 2019 01:52

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Contributors

Author: Nina Podoliak ORCID iD
Author: Eleni Perivolari
Author: Thomas Bennett
Author: Matthew B. Proctor
Author: Thomas Regrettier
Author: Thomas Heiser

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