Self-sustained actuation from heat dissipation in liquid crystal polymer networks

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
22 Downloads (Pure)

Abstract

Liquid crystal polymer networks (LCNs) lead the research geared toward macroscopic motion of materials. These actuators are molecularly programed to adapt their shape in response to external stimuli. Non-photo-responsive thin films of LCNs covered with heat absorbers (e.g., graphene or ink) are shown to continuously oscillate when exposed to light. The motion is governed by the heat dissipated at the film surface and the anisotropic thermal deformation of the network. The influence of the LC molecular alignment, the film thickness, and the LC matrix on the macroscopic motion is analyzed to probe the limits of the system. The insights gained from these experiments provide not only guidelines to create actuators by photo-thermal or pure photo-effects but also a simple method to generate mechanical oscillators for soft robotics and automated systems.

Original languageEnglish
Pages (from-to)1331-1336
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume56
Issue number13
DOIs
Publication statusPublished - 1 Jul 2018

Fingerprint

Liquid crystal polymers
Heat losses
Actuators
Oscillators (mechanical)
Graphite
Molecular orientation
Ink
Graphene
Film thickness
Robotics
Thin films
Hot Temperature
liquid crystal polymer
Experiments

Keywords

  • Adaptive materials
  • Liquid crystal polymer networks
  • Liquid-crystalline polymers
  • Networks and stimuli-sensitive polymers
  • Oscillatory motion
  • Photo-thermal effect
  • Soft robotics

Cite this

@article{0f31cc6dbb554f2db283afbcf28d2c57,
title = "Self-sustained actuation from heat dissipation in liquid crystal polymer networks",
abstract = "Liquid crystal polymer networks (LCNs) lead the research geared toward macroscopic motion of materials. These actuators are molecularly programed to adapt their shape in response to external stimuli. Non-photo-responsive thin films of LCNs covered with heat absorbers (e.g., graphene or ink) are shown to continuously oscillate when exposed to light. The motion is governed by the heat dissipated at the film surface and the anisotropic thermal deformation of the network. The influence of the LC molecular alignment, the film thickness, and the LC matrix on the macroscopic motion is analyzed to probe the limits of the system. The insights gained from these experiments provide not only guidelines to create actuators by photo-thermal or pure photo-effects but also a simple method to generate mechanical oscillators for soft robotics and automated systems.",
keywords = "Adaptive materials, Liquid crystal polymer networks, Liquid-crystalline polymers, Networks and stimuli-sensitive polymers, Oscillatory motion, Photo-thermal effect, Soft robotics",
author = "Ghislaine Vantomme and Gelebart, {Anne Helene} and Broer, {Dirk Jan} and Meijer, {E. W.}",
year = "2018",
month = "7",
day = "1",
doi = "10.1002/pola.29032",
language = "English",
volume = "56",
pages = "1331--1336",
journal = "Journal of Polymer Science, Part A: Polymer Chemistry",
issn = "0887-624X",
publisher = "Wiley",
number = "13",

}

Self-sustained actuation from heat dissipation in liquid crystal polymer networks. / Vantomme, Ghislaine; Gelebart, Anne Helene; Broer, Dirk Jan; Meijer, E. W.

In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 56, No. 13, 01.07.2018, p. 1331-1336.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Self-sustained actuation from heat dissipation in liquid crystal polymer networks

AU - Vantomme, Ghislaine

AU - Gelebart, Anne Helene

AU - Broer, Dirk Jan

AU - Meijer, E. W.

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Liquid crystal polymer networks (LCNs) lead the research geared toward macroscopic motion of materials. These actuators are molecularly programed to adapt their shape in response to external stimuli. Non-photo-responsive thin films of LCNs covered with heat absorbers (e.g., graphene or ink) are shown to continuously oscillate when exposed to light. The motion is governed by the heat dissipated at the film surface and the anisotropic thermal deformation of the network. The influence of the LC molecular alignment, the film thickness, and the LC matrix on the macroscopic motion is analyzed to probe the limits of the system. The insights gained from these experiments provide not only guidelines to create actuators by photo-thermal or pure photo-effects but also a simple method to generate mechanical oscillators for soft robotics and automated systems.

AB - Liquid crystal polymer networks (LCNs) lead the research geared toward macroscopic motion of materials. These actuators are molecularly programed to adapt their shape in response to external stimuli. Non-photo-responsive thin films of LCNs covered with heat absorbers (e.g., graphene or ink) are shown to continuously oscillate when exposed to light. The motion is governed by the heat dissipated at the film surface and the anisotropic thermal deformation of the network. The influence of the LC molecular alignment, the film thickness, and the LC matrix on the macroscopic motion is analyzed to probe the limits of the system. The insights gained from these experiments provide not only guidelines to create actuators by photo-thermal or pure photo-effects but also a simple method to generate mechanical oscillators for soft robotics and automated systems.

KW - Adaptive materials

KW - Liquid crystal polymer networks

KW - Liquid-crystalline polymers

KW - Networks and stimuli-sensitive polymers

KW - Oscillatory motion

KW - Photo-thermal effect

KW - Soft robotics

UR - http://www.scopus.com/inward/record.url?scp=85046011932&partnerID=8YFLogxK

U2 - 10.1002/pola.29032

DO - 10.1002/pola.29032

M3 - Article

C2 - 29937627

AN - SCOPUS:85046011932

VL - 56

SP - 1331

EP - 1336

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

SN - 0887-624X

IS - 13

ER -