Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Multistable shape programming of variable-stiffness electromagnetic devices
 
research article

Multistable shape programming of variable-stiffness electromagnetic devices

Aksoy, Bekir  
•
Shea, Herbert  
May 27, 2022
Science Advances

Programmable shape morphing enables soft machines to safely and effectively interact with the environment. Stimuli-responsive materials can transform 2D sheets into 3D geometries. However, most solutions cannot hold their shape at zero power, are limited to predetermined configurations, or lack sufficient mechanical stiffness to manipulate common objects. We demonstrate here segmented soft electromagnetic actuators integrated with shape memory polymer (SMP) films, capable of deforming and latching into a broad range of configurations. The device consists of liquid metal (LM) coils in an elastomer shell, laminated between two SMP films. The coils are linked by narrow joints, on which stretchable heaters are patterned. Heating the SMP greatly reduces its stiffness. Driving current through an LM coil in the presence of a magnetic field then leads to large bending or twisting. Cooling the SMP locks in the shape, leading to load-bearing capacity. Complex shapes are obtained from an initially flat device.

  • Details
  • Metrics
Type
research article
DOI
10.1126/sciadv.abk0543
Web of Science ID

WOS:000802745600005

Author(s)
Aksoy, Bekir  
Shea, Herbert  
Date Issued

2022-05-27

Publisher

AMER ASSOC ADVANCEMENT SCIENCE

Published in
Science Advances
Volume

8

Issue

21

Article Number

eabk0543

Subjects

Multidisciplinary Sciences

•

Science & Technology - Other Topics

•

surfaces

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTS  
Available on Infoscience
June 20, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/188543
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés