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  4. Hydraulically Amplified Electrostatic Taxels (HAXELs) for Full Body Haptics
 
research article

Hydraulically Amplified Electrostatic Taxels (HAXELs) for Full Body Haptics

Leroy, Edouard  
•
Shea, Herbert  
May 23, 2023
Advanced Materials Technologies

The ability to mechanically stimulate touch receptors over the entire body is a key feature for fully immersive and highly realistic virtual reality experience. Haptic stickers, flexible arrays of HAXELs (hydraulically amplified TAXels), that enable cutaneous haptics over nearly all parts of the body, are reported. HAXELs are zipping electrostatic actuators that combine stretchable elastomers and high permittivity flexible films to generate both high strains and high forces, from DC to 200 Hz. A fabrication process that enables scaling HAXELs from 2 to 15 mm in diameter is presented, allowing to tailor the actuators to different body parts and to wearables such as wrist-watches. The different sizes of HAXELs generate blocked forces from 100 to 800 mN, with DC displacements from 100 to 850 mu m, well above sensation thresholds. Haptics tests of Haptic Stickers, 5 x 5 arrays of 10 mm diameter devices, on palms, back of the hand, neck, arm, and back of a dozen volunteers, are done with users reporting high pattern recognition success on many body locations. The Haptic Stickers uniquely offer a thin and lightweight form-factor, which does not limit the freedom of motion of the user, compatible with untethered scenarios.

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Type
research article
DOI
10.1002/admt.202300242
Web of Science ID

WOS:000992436300001

Author(s)
Leroy, Edouard  
Shea, Herbert  
Date Issued

2023-05-23

Publisher

Wiley

Published in
Advanced Materials Technologies
Subjects

Materials Science, Multidisciplinary

•

Materials Science

•

actuator arrays

•

electrostatic actuators

•

electrostatic zipping

•

soft robotics

•

wearable haptics

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTS  
Available on Infoscience
June 19, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/198316
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