Protruding organic surfaces triggered by in-plane electric fields

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)
76 Downloads (Pure)

Abstract

Coatings with a dynamic surface topography are of interest for applications in haptics, soft robotics, cell growth in biology, hydro- and air dynamics and tribology. Here we propose a design for creating oscillating surface topographies in thin liquid crystal polymer network coatings under an electric field. By applying an alternating electric field, the coating surface deforms, and pre-designed local corrugations appear. The continuous AC electric field further initiates oscillations superimposed on the formed topographies. This effect is based on microscopic free volume creation. By exciting the liquid crystal network at its resonance frequency, maximum free volume is generated and large surface topographies are formed. Molecular simulation is used to examine this behaviour in microscopic detail as a function of oscillation frequency. Surface topography formation is fast and reversible. Excess free volume is energetically unfavourable, thus the surface topographies disappear within seconds once the electric field is removed.

Original languageEnglish
Article number1526
JournalNature Communications
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Dec 2017

Fingerprint

Liquid Crystals
Robotics
Surface topography
topography
Air
Electric fields
Free volume
electric fields
Growth
Coatings
coatings
liquid crystals
Tribology
Cell growth
tribology
oscillations
Topography
robotics
biology
liquid crystal polymer

Cite this

@article{bbc651facb0b4be0a0ef1b5b0ab5e7b8,
title = "Protruding organic surfaces triggered by in-plane electric fields",
abstract = "Coatings with a dynamic surface topography are of interest for applications in haptics, soft robotics, cell growth in biology, hydro- and air dynamics and tribology. Here we propose a design for creating oscillating surface topographies in thin liquid crystal polymer network coatings under an electric field. By applying an alternating electric field, the coating surface deforms, and pre-designed local corrugations appear. The continuous AC electric field further initiates oscillations superimposed on the formed topographies. This effect is based on microscopic free volume creation. By exciting the liquid crystal network at its resonance frequency, maximum free volume is generated and large surface topographies are formed. Molecular simulation is used to examine this behaviour in microscopic detail as a function of oscillation frequency. Surface topography formation is fast and reversible. Excess free volume is energetically unfavourable, thus the surface topographies disappear within seconds once the electric field is removed.",
author = "D. Liu and N.B. Tito and D.J. Broer",
year = "2017",
month = "12",
day = "1",
doi = "10.1038/s41467-017-01448-w",
language = "English",
volume = "8",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

Protruding organic surfaces triggered by in-plane electric fields. / Liu, D.; Tito, N.B.; Broer, D.J.

In: Nature Communications, Vol. 8, No. 1, 1526, 01.12.2017.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Protruding organic surfaces triggered by in-plane electric fields

AU - Liu, D.

AU - Tito, N.B.

AU - Broer, D.J.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Coatings with a dynamic surface topography are of interest for applications in haptics, soft robotics, cell growth in biology, hydro- and air dynamics and tribology. Here we propose a design for creating oscillating surface topographies in thin liquid crystal polymer network coatings under an electric field. By applying an alternating electric field, the coating surface deforms, and pre-designed local corrugations appear. The continuous AC electric field further initiates oscillations superimposed on the formed topographies. This effect is based on microscopic free volume creation. By exciting the liquid crystal network at its resonance frequency, maximum free volume is generated and large surface topographies are formed. Molecular simulation is used to examine this behaviour in microscopic detail as a function of oscillation frequency. Surface topography formation is fast and reversible. Excess free volume is energetically unfavourable, thus the surface topographies disappear within seconds once the electric field is removed.

AB - Coatings with a dynamic surface topography are of interest for applications in haptics, soft robotics, cell growth in biology, hydro- and air dynamics and tribology. Here we propose a design for creating oscillating surface topographies in thin liquid crystal polymer network coatings under an electric field. By applying an alternating electric field, the coating surface deforms, and pre-designed local corrugations appear. The continuous AC electric field further initiates oscillations superimposed on the formed topographies. This effect is based on microscopic free volume creation. By exciting the liquid crystal network at its resonance frequency, maximum free volume is generated and large surface topographies are formed. Molecular simulation is used to examine this behaviour in microscopic detail as a function of oscillation frequency. Surface topography formation is fast and reversible. Excess free volume is energetically unfavourable, thus the surface topographies disappear within seconds once the electric field is removed.

UR - http://www.scopus.com/inward/record.url?scp=85034425937&partnerID=8YFLogxK

U2 - 10.1038/s41467-017-01448-w

DO - 10.1038/s41467-017-01448-w

M3 - Article

C2 - 29142253

AN - SCOPUS:85034425937

VL - 8

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 1526

ER -