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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

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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.
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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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Touch IoT enabled by wireless self-sensing and haptic-reproducing electronic skin.

Dengfeng Li1,2, Jingkun Zhou1,2, Kuanming Yao1

  • 1Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR 999077, China.

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This study introduces wireless electronic skin (e-skin) for noncontact touch communication. This innovative technology enables real-time, bidirectional tactile sensation transmission between users and devices.

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Area of Science:

  • Materials Science
  • Robotics
  • Human-Computer Interaction

Background:

  • Tactile sensations are traditionally conveyed through physical touch.
  • The development of noncontact touch communication is crucial for advancing human-device interaction.
  • Existing technologies lack integrated tactile sensing and haptic feedback capabilities.

Purpose of the Study:

  • To develop a wireless self-sensing and haptic-reproducing electronic skin (e-skin).
  • To enable noncontact, bidirectional touch communication.
  • To explore applications in the touch internet of things.

Main Methods:

  • A flexible self-sensing actuator was designed for integrated tactile sensing and haptic feedback.
  • Dynamic pressure on the e-skin generated an induced voltage representing tactile information.
  • Wireless communication protocols were used to transmit tactile data between e-skin devices.

Main Results:

  • The e-skin successfully captured and transmitted tactile information wirelessly.
  • Synchronized haptic reproduction was achieved on a receiving e-skin.
  • Bidirectional touch communication was demonstrated, functioning as a touch intercom.
  • The system facilitated one-to-one and one-to-multiple touch delivery within a touch internet of things framework.

Conclusions:

  • The developed e-skin offers a novel method for wireless touch perception and communication.
  • This technology has significant potential for applications in remote interaction, healthcare, and education.
  • The findings pave the way for a more immersive and connected touch internet of things.