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Related Concept Videos

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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Somatosensation01:33

Somatosensation

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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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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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Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

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One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
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Sensory Modalities01:15

Sensory Modalities

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Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
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Sensory Functions of the Skin01:16

Sensory Functions of the Skin

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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.
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Related Experiment Video

Updated: Sep 21, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

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Multimodal Fibrous Static and Dynamic Tactile Sensor.

Jarred W Fastier-Wooller1, Trung-Hieu Vu1, Hang Nguyen2

  • 1School of Engineering and Built Environment, Griffith University, Engineering Drive, Southport 4222, Australia.

ACS Applied Materials & Interfaces
|June 3, 2022
PubMed
Summary
This summary is machine-generated.

A novel, low-cost tactile sensor using poly(vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] micronanofibers offers robust static and dynamic load measurements. This thin, flexible sensor demonstrates reliable performance over 30,000 cycles for robotic applications.

Keywords:
P(VDF-TrFE)electrospinningfibrous materialmultimodal tactile sensingpiezoelectric-capacitive

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Area of Science:

  • Materials Science
  • Robotics Engineering
  • Sensor Technology

Background:

  • Developing advanced tactile sensors is crucial for enhancing robot dexterity and interaction capabilities.
  • Existing tactile sensors often face challenges with cost, robustness, and integration.

Purpose of the Study:

  • To present a versatile, low-cost, and robust tactile sensor utilizing P(VDF-TrFE) micronanofibers.
  • To demonstrate the sensor's capability for acquiring static and dynamic load measurements.
  • To explore the potential of this sensor design in multimodal robotic tactile sensing.

Main Methods:

  • Fabrication of a multi-layered sensor with a P(VDF-TrFE) core and Ni/Cu conductive fabric electrodes.
  • Utilizing an *in situ* electrospinning process to deposit fibers directly onto a poly(dimethylsiloxane) (PDMS) fingertip.
  • Testing sensor performance under static and dynamic loading conditions over 30,000 cycles.

Main Results:

  • The sensor achieved a total thickness of less than 300 μm.
  • The *in situ* electrospinning method ensured excellent surface conformity and adhesion.
  • Consistent and reliable measurement performance was observed for both static and dynamic loads.

Conclusions:

  • The presented P(VDF-TrFE) micronanofiber tactile sensor is a promising solution for low-cost, high-performance robotic sensing.
  • The *in situ* fabrication technique effectively addresses challenges in sensor integration and surface contact.
  • The sensor design holds significant potential for advancing multimodal sensing in robotics.