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Related Concept Videos

Sensory Functions of the Skin01:16

Sensory Functions of the Skin

The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

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...
Somatosensation01:33

Somatosensation

The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.

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Related Experiment Video

Updated: May 11, 2026

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Soft, transparent, electronic skin for distributed and multiple pressure sensing.

Alessandro Levi1, Matteo Piovanelli, Silvano Furlan

  • 1Center for Micro-BioRobotics@SSSA, Istituto Italiano di Tecnologia, Pontedera 56025, PI, Italy. alessandro.levi@iit.it

Sensors (Basel, Switzerland)
|May 21, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces a novel optical, flexible pressure sensor, or electronic skin, capable of detecting pressure and contact shape. This technology enables robots and electronics to gain tactile sensing capabilities for advanced interaction.

Related Experiment Videos

Last Updated: May 11, 2026

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Area of Science:

  • Materials Science
  • Robotics
  • Optoelectronics

Background:

  • Robots and electronic devices lack sophisticated tactile sensing capabilities.
  • Current pressure sensors often lack flexibility, optical transduction, or high sensitivity.
  • There is a need for advanced electronic skin for enhanced human-robot interaction and device functionality.

Purpose of the Study:

  • To present a new optical, flexible pressure sensor (electronic skin).
  • To demonstrate a mechano-optical transduction principle for tactile sensing.
  • To validate the sensor's performance on planar and curved surfaces.

Main Methods:

  • Developed an electronic skin using infrared emitters and photodetectors in a PDMS waveguide.
  • Utilized the principle of Frustrated Total Internal Reflection for signal transduction.
  • Employed an electronic system and reconstruction algorithm to generate pressure maps.

Main Results:

  • The sensor successfully detected contact, pressure, and shape stimuli.
  • Achieved a weight sensitivity of 0.193 gr⁻¹, enabling detection of pressures in the gram range.
  • Demonstrated functionality on curved surfaces and at multiple contact positions.

Conclusions:

  • The presented optical, flexible pressure sensor offers a viable solution for tactile sensing in robotics and consumer electronics.
  • The mechano-optical transduction principle is effective for encoding mechanical stimuli into optical signals.
  • The electronic skin shows promise for applications requiring high sensitivity and conformability.