Liquid single crystal elastomer/conducting polymer bilayer composite actuator: Modelling and experiments

Francesco Greco, Valentina Domenici, Andrea Desii, Edoardo Sinibaldi, Blaž Zupančič, Boštjan Zalar, Barbara Mazzolai, Virgilio Mattoli

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In order to integrate electroconductive properties in a Liquid Single Crystal Elastomer (LSCE) and to test direct actuation of the LSCE by Joule heating, we present a new bi-layered all-organic composite actuator based on the coupling of a nematic LSCE with a conductive polymer. The bending actuator is fabricated by depositing a thin conductive polymer layer of poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) over the surface of a polysiloxane-based monodomain nematic LSCE film. Mechanical properties of PEDOT:PSS, better matched with LSCE ones compared with metals or inorganic nanoparticles used in other approaches, allowed us to develop an all-organic reliable millimetre-scale actuating composite. The thermally induced elongation/compression of the LSCE over 30% is exploited for the fabrication of bending actuators with curvature up to κ = 0.64 mm-1. The LSCE and the composite material are characterized as regards their thermo-mechanical and electrical properties. A model is introduced to describe bending of the composite as a function of the thermo-mechanical properties of the LSCE, and the model is assessed by comparing the model results with the experimental findings. Bending actuation via direct Joule heating of the composite is also assessed by supplying the necessary current (50 mA at 1.3 V) through wires connected to the composite. These results open new possibilities for the application of LCEs in the micro and soft robotics fields, as well as in the biomedical field.

Original languageEnglish
Pages (from-to)11405-11416
Number of pages12
JournalSoft Matter
Volume9
Issue number47
DOIs
Publication statusPublished - 2013 Dec 21
Externally publishedYes

Fingerprint

Elastomers
Conducting polymers
conducting polymers
elastomers
Actuators
actuators
liquid crystals
Single crystals
composite materials
single crystals
Composite materials
Liquids
Experiments
Joule heating
mechanical properties
actuation
Mechanical properties
Polymers
Siloxanes
polysiloxanes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Greco, F., Domenici, V., Desii, A., Sinibaldi, E., Zupančič, B., Zalar, B., ... Mattoli, V. (2013). Liquid single crystal elastomer/conducting polymer bilayer composite actuator: Modelling and experiments. Soft Matter, 9(47), 11405-11416. https://doi.org/10.1039/c3sm51153g

Liquid single crystal elastomer/conducting polymer bilayer composite actuator : Modelling and experiments. / Greco, Francesco; Domenici, Valentina; Desii, Andrea; Sinibaldi, Edoardo; Zupančič, Blaž; Zalar, Boštjan; Mazzolai, Barbara; Mattoli, Virgilio.

In: Soft Matter, Vol. 9, No. 47, 21.12.2013, p. 11405-11416.

Research output: Contribution to journalArticle

Greco, F, Domenici, V, Desii, A, Sinibaldi, E, Zupančič, B, Zalar, B, Mazzolai, B & Mattoli, V 2013, 'Liquid single crystal elastomer/conducting polymer bilayer composite actuator: Modelling and experiments', Soft Matter, vol. 9, no. 47, pp. 11405-11416. https://doi.org/10.1039/c3sm51153g
Greco F, Domenici V, Desii A, Sinibaldi E, Zupančič B, Zalar B et al. Liquid single crystal elastomer/conducting polymer bilayer composite actuator: Modelling and experiments. Soft Matter. 2013 Dec 21;9(47):11405-11416. https://doi.org/10.1039/c3sm51153g
Greco, Francesco ; Domenici, Valentina ; Desii, Andrea ; Sinibaldi, Edoardo ; Zupančič, Blaž ; Zalar, Boštjan ; Mazzolai, Barbara ; Mattoli, Virgilio. / Liquid single crystal elastomer/conducting polymer bilayer composite actuator : Modelling and experiments. In: Soft Matter. 2013 ; Vol. 9, No. 47. pp. 11405-11416.
@article{406a46334988422eb339aeba9c19502d,
title = "Liquid single crystal elastomer/conducting polymer bilayer composite actuator: Modelling and experiments",
abstract = "In order to integrate electroconductive properties in a Liquid Single Crystal Elastomer (LSCE) and to test direct actuation of the LSCE by Joule heating, we present a new bi-layered all-organic composite actuator based on the coupling of a nematic LSCE with a conductive polymer. The bending actuator is fabricated by depositing a thin conductive polymer layer of poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) over the surface of a polysiloxane-based monodomain nematic LSCE film. Mechanical properties of PEDOT:PSS, better matched with LSCE ones compared with metals or inorganic nanoparticles used in other approaches, allowed us to develop an all-organic reliable millimetre-scale actuating composite. The thermally induced elongation/compression of the LSCE over 30{\%} is exploited for the fabrication of bending actuators with curvature up to κ = 0.64 mm-1. The LSCE and the composite material are characterized as regards their thermo-mechanical and electrical properties. A model is introduced to describe bending of the composite as a function of the thermo-mechanical properties of the LSCE, and the model is assessed by comparing the model results with the experimental findings. Bending actuation via direct Joule heating of the composite is also assessed by supplying the necessary current (50 mA at 1.3 V) through wires connected to the composite. These results open new possibilities for the application of LCEs in the micro and soft robotics fields, as well as in the biomedical field.",
author = "Francesco Greco and Valentina Domenici and Andrea Desii and Edoardo Sinibaldi and Blaž Zupančič and Boštjan Zalar and Barbara Mazzolai and Virgilio Mattoli",
year = "2013",
month = "12",
day = "21",
doi = "10.1039/c3sm51153g",
language = "English",
volume = "9",
pages = "11405--11416",
journal = "Soft Matter",
issn = "1744-683X",
publisher = "Royal Society of Chemistry",
number = "47",

}

TY - JOUR

T1 - Liquid single crystal elastomer/conducting polymer bilayer composite actuator

T2 - Modelling and experiments

AU - Greco, Francesco

AU - Domenici, Valentina

AU - Desii, Andrea

AU - Sinibaldi, Edoardo

AU - Zupančič, Blaž

AU - Zalar, Boštjan

AU - Mazzolai, Barbara

AU - Mattoli, Virgilio

PY - 2013/12/21

Y1 - 2013/12/21

N2 - In order to integrate electroconductive properties in a Liquid Single Crystal Elastomer (LSCE) and to test direct actuation of the LSCE by Joule heating, we present a new bi-layered all-organic composite actuator based on the coupling of a nematic LSCE with a conductive polymer. The bending actuator is fabricated by depositing a thin conductive polymer layer of poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) over the surface of a polysiloxane-based monodomain nematic LSCE film. Mechanical properties of PEDOT:PSS, better matched with LSCE ones compared with metals or inorganic nanoparticles used in other approaches, allowed us to develop an all-organic reliable millimetre-scale actuating composite. The thermally induced elongation/compression of the LSCE over 30% is exploited for the fabrication of bending actuators with curvature up to κ = 0.64 mm-1. The LSCE and the composite material are characterized as regards their thermo-mechanical and electrical properties. A model is introduced to describe bending of the composite as a function of the thermo-mechanical properties of the LSCE, and the model is assessed by comparing the model results with the experimental findings. Bending actuation via direct Joule heating of the composite is also assessed by supplying the necessary current (50 mA at 1.3 V) through wires connected to the composite. These results open new possibilities for the application of LCEs in the micro and soft robotics fields, as well as in the biomedical field.

AB - In order to integrate electroconductive properties in a Liquid Single Crystal Elastomer (LSCE) and to test direct actuation of the LSCE by Joule heating, we present a new bi-layered all-organic composite actuator based on the coupling of a nematic LSCE with a conductive polymer. The bending actuator is fabricated by depositing a thin conductive polymer layer of poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) over the surface of a polysiloxane-based monodomain nematic LSCE film. Mechanical properties of PEDOT:PSS, better matched with LSCE ones compared with metals or inorganic nanoparticles used in other approaches, allowed us to develop an all-organic reliable millimetre-scale actuating composite. The thermally induced elongation/compression of the LSCE over 30% is exploited for the fabrication of bending actuators with curvature up to κ = 0.64 mm-1. The LSCE and the composite material are characterized as regards their thermo-mechanical and electrical properties. A model is introduced to describe bending of the composite as a function of the thermo-mechanical properties of the LSCE, and the model is assessed by comparing the model results with the experimental findings. Bending actuation via direct Joule heating of the composite is also assessed by supplying the necessary current (50 mA at 1.3 V) through wires connected to the composite. These results open new possibilities for the application of LCEs in the micro and soft robotics fields, as well as in the biomedical field.

UR - http://www.scopus.com/inward/record.url?scp=84888320532&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888320532&partnerID=8YFLogxK

U2 - 10.1039/c3sm51153g

DO - 10.1039/c3sm51153g

M3 - Article

AN - SCOPUS:84888320532

VL - 9

SP - 11405

EP - 11416

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 47

ER -