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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.
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...
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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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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Measurements of Strain01:27

Measurements of Strain

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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Related Experiment Video

Updated: Nov 17, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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Spider Web-like Flexible Tactile Sensor for Pressure-Strain Simultaneous Detection.

Xue-Feng Zhao1,2, Xiao-Hong Wen1, Peng Sun1

  • 1State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems, School of Microelectronics, Fudan University, Shanghai 200433, China.

ACS Applied Materials & Interfaces
|February 16, 2021
PubMed
Summary

Researchers developed a novel flexible sensor using 3D tubular graphene sponge and spider web-like electrodes. This device enables sensitive, simultaneous monitoring of both pressure and strain for advanced wearable electronics.

Keywords:
3D tubular graphene spongedual-parameter sensorhuman-machine interactionhybrid stretchable electrodesimultaneous detection

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Nanotechnology

Background:

  • Flexible wearable electronics require multiparameter integrated sensors.
  • Signal interference is a key challenge for simultaneous pressure-strain monitoring in tactile sensors.

Purpose of the Study:

  • To design and fabricate a flexible dual-parameter pressure-strain sensor.
  • To overcome signal interference issues for sensitive, simultaneous monitoring.

Main Methods:

  • Utilized a three-dimensional (3D) tubular graphene sponge (TGS) as the pressure-sensitive module.
  • Developed spider web-like stretchable electrodes using a hybrid nanocomposite of silver nanowires (Ag NWs) and carbon nanotubes (CNTs) for strain sensing.
  • Employed a spray-embedded process for electrode fabrication.

Main Results:

  • The 3D-TGS exhibited robust compressibility (∼20% compression without shape collapse).
  • The spider web-like electrodes effectively monitored applied force magnitude and direction simultaneously.
  • The sensor demonstrated high sensitivity and low signal interference.

Conclusions:

  • The developed sensor effectively integrates pressure and strain monitoring capabilities.
  • This technology shows significant promise for applications in human-machine interaction, artificial intelligence, and wearable systems.