Active control of the free surface of a rivulet of a nematic liquid crystal with an electric field

Akhshay S. Bhadwal; Joseph R. L. Cousins; Nigel J. Mottram; Stephen K. Wilson; Brian R. Duffy; Ian C. Sage; Carl V. Brown

doi:10.1103/PhysRevFluids.9.064002

Active control of the free surface of a rivulet of a nematic liquid crystal with an electric field

Akhshay S. Bhadwal, Joseph R. L. Cousins, Nigel J. Mottram, Stephen K. Wilson, Brian R. Duffy, Ian C. Sage, Carl V. Brown

Research output: Contribution to journal › Article › peer-review

95 Downloads (Pure)

Abstract

Active control of a rivulet of a nematic liquid crystal is achieved by local modification of the effective viscosity with an applied electric field. Specifically, using the nematic 5CB, control of the free surface of the rivulet is achieved through manipulation of the effective viscosity induced by the competition of moments due to viscous shear stress alignment and electric field alignment. The experimentally observed dependencies of the rivulet height on the volume flux and the strength of the applied electric field are successfully captured by a theoretical model based on the Ericksen-Leslie equations.

Original language	English
Article number	064002
Journal	Physical Review Fluids
Volume	9
Issue number	6
Early online date	24 Jun 2024
DOIs	https://doi.org/10.1103/PhysRevFluids.9.064002
Publication status	Published - 24 Jun 2024

Bibliographical note

Publisher Copyright:
© 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Data Availability Statement

All data supporting this work are provided at [39].

Funding

The authors would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) via EPSRC Research Grants No. EP/T012986/1 and No. EP/T012501/2. We also wish to thank Russell Metcalfe (Nottingham Trent University) for his technical support with the experiments, and Professor Martin Bencsik (also Nottingham Trent University) for assistance with the image processing used to create Fig. The authors would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) via EPSRC Research Grants No. EP/T012986/1 and No. EP/T012501/2. We also wish to thank Russell Metcalfe (Nottingham Trent University) for his technical support with the experiments, and Professor Martin Bencsik (also Nottingham Trent University) for assistance with the image processing used to create Fig. .

Funders	Funder number
Nottingham Trent University
Engineering and Physical Sciences Research Council	EP/T012986/1, EP/T012501/2

Access to Document

10.1103/PhysRevFluids.9.064002Licence: CC BY

Bhadwal_Cousins_et_al_PhysRevFluids_2024Final published version, 2.47 MBLicence: CC BY

Cite this

@article{031c1c3a17e7431ebbe46f4432c8525d,

title = "Active control of the free surface of a rivulet of a nematic liquid crystal with an electric field",

abstract = "Active control of a rivulet of a nematic liquid crystal is achieved by local modification of the effective viscosity with an applied electric field. Specifically, using the nematic 5CB, control of the free surface of the rivulet is achieved through manipulation of the effective viscosity induced by the competition of moments due to viscous shear stress alignment and electric field alignment. The experimentally observed dependencies of the rivulet height on the volume flux and the strength of the applied electric field are successfully captured by a theoretical model based on the Ericksen-Leslie equations.",

author = "Bhadwal, \{Akhshay S.\} and Cousins, \{Joseph R. L.\} and Mottram, \{Nigel J.\} and Wilson, \{Stephen K.\} and Duffy, \{Brian R.\} and Sage, \{Ian C.\} and Brown, \{Carl V.\}",

note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2024",

month = jun,

day = "24",

doi = "10.1103/PhysRevFluids.9.064002",

language = "English",

volume = "9",

journal = "Physical Review Fluids",

issn = "2469-990X",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Active control of the free surface of a rivulet of a nematic liquid crystal with an electric field

AU - Bhadwal, Akhshay S.

AU - Cousins, Joseph R. L.

AU - Mottram, Nigel J.

AU - Wilson, Stephen K.

AU - Duffy, Brian R.

AU - Sage, Ian C.

AU - Brown, Carl V.

N1 - Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2024/6/24

Y1 - 2024/6/24

N2 - Active control of a rivulet of a nematic liquid crystal is achieved by local modification of the effective viscosity with an applied electric field. Specifically, using the nematic 5CB, control of the free surface of the rivulet is achieved through manipulation of the effective viscosity induced by the competition of moments due to viscous shear stress alignment and electric field alignment. The experimentally observed dependencies of the rivulet height on the volume flux and the strength of the applied electric field are successfully captured by a theoretical model based on the Ericksen-Leslie equations.

AB - Active control of a rivulet of a nematic liquid crystal is achieved by local modification of the effective viscosity with an applied electric field. Specifically, using the nematic 5CB, control of the free surface of the rivulet is achieved through manipulation of the effective viscosity induced by the competition of moments due to viscous shear stress alignment and electric field alignment. The experimentally observed dependencies of the rivulet height on the volume flux and the strength of the applied electric field are successfully captured by a theoretical model based on the Ericksen-Leslie equations.

UR - https://www.scopus.com/pages/publications/85196875786

U2 - 10.1103/PhysRevFluids.9.064002

DO - 10.1103/PhysRevFluids.9.064002

M3 - Article

SN - 2469-990X

VL - 9

JO - Physical Review Fluids

JF - Physical Review Fluids

IS - 6

M1 - 064002

ER -

Active control of the free surface of a rivulet of a nematic liquid crystal with an electric field

Abstract

Bibliographical note

Data Availability Statement

Funding

Access to Document

Other files and links

Fingerprint

Cite this