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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

423
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
423

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Fabrication Process of Silicone-based Dielectric Elastomer Actuators
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A Wearable Textile-Embedded Dielectric Elastomer Actuator Haptic Display.

Dae-Young Lee1,2, Seung Hee Jeong1,3, Andy J Cohen1

  • 1School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts, USA.

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|July 20, 2022
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Wearable haptic devices enhance virtual/augmented reality communication. This study integrates advanced actuators and skin models for effective touch feedback, balancing performance and comfort.

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Area of Science:

  • Human-computer interaction
  • Wearable technology
  • Haptic feedback systems

Background:

  • Mobile computing and virtual/augmented reality (VR/AR) advance information delivery.
  • Wearable haptic devices offer tactile communication, augmenting sight and hearing.
  • Effective haptic devices require balancing ergonomics and performance (array size, bandwidth, perception accuracy).

Purpose of the Study:

  • To present an integrated design approach for wearable haptic devices.
  • To address conflicting requirements between ergonomics and haptic performance.
  • To develop a haptic device capable of effective data communication.

Main Methods:

  • Incorporation of multilayered dielectric elastomer actuators.
  • Development of a lumped-parameter model of human skin.
  • Integration of a wearable frame into the design process.
  • Utilizing an antagonistic actuator arrangement for force transmission.
  • Conducting lumped-model analysis and human perception studies.

Main Results:

  • An integrated approach successfully addressed conflicting design requirements.
  • An antagonistic actuator arrangement achieved effective force transmission with a low profile.
  • Lumped-model analysis and perception studies informed the wearable frame's structural effects.

Conclusions:

  • The integrated design approach is effective for developing advanced wearable haptic devices.
  • Dielectric elastomer actuators and skin modeling are key to optimizing haptic performance and ergonomics.
  • Further research can leverage these findings for enhanced VR/AR and communication experiences.