Elastomeric patterns probed by a nematic liquid crystal

A. P.C. Almeida, A. C. Trindade, João P. Canejo, Pedro Patrício, Pawel Pieranski, Maria H. Godinho

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Soft Janus elastomers have two surfaces with diverse characteristics. In this work, by tuning the chemical composition and the surface roughness we were able to vary the wettability of thin films (thickness of 100–200 μm) and spheres (diameters in the order of 200 μm to 2 mm) and evidence the multifunction of the opposite sides. We also describe a simple and inexpensive method to reveal the wrinkled-labyrinthine patterns that appear in the Janus particles by means of a nematic liquid crystal (LC). LC contact angle measurements associated with the swelling and anchoring characteristics of the surfaces were used to image the Janus particles opening new platforms for sensor applications from flexible free-standing LCs containers.

Original languageEnglish
Pages (from-to)136-146
Number of pages11
JournalMolecular Crystals and Liquid Crystals
Volume657
Issue number1
DOIs
Publication statusPublished - 2 Nov 2017

Fingerprint

Janus
Nematic liquid crystals
liquid crystals
Elastomers
Liquid Crystals
Angle measurement
Liquid crystals
Contact angle
Containers
Swelling
Film thickness
Wetting
Tuning
Surface roughness
elastomers
wettability
containers
swelling
Thin films
Sensors

Keywords

  • Elastomers
  • Janus particles
  • nematic liquid crystal
  • wettability
  • wrinkling

Cite this

Almeida, A. P.C. ; Trindade, A. C. ; Canejo, João P. ; Patrício, Pedro ; Pieranski, Pawel ; Godinho, Maria H. / Elastomeric patterns probed by a nematic liquid crystal. In: Molecular Crystals and Liquid Crystals. 2017 ; Vol. 657, No. 1. pp. 136-146.
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Elastomeric patterns probed by a nematic liquid crystal. / Almeida, A. P.C.; Trindade, A. C.; Canejo, João P.; Patrício, Pedro; Pieranski, Pawel; Godinho, Maria H.

In: Molecular Crystals and Liquid Crystals, Vol. 657, No. 1, 02.11.2017, p. 136-146.

Research output: Contribution to journalArticle

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AU - Pieranski, Pawel

AU - Godinho, Maria H.

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