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Related Concept Videos

Pressure Gauges01:20

Pressure Gauges

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Most pressure gauges, like those on scuba tanks, are calibrated to read zero at atmospheric pressure. Readings from such gauges are called the gauge pressure, which is the pressure relative to atmospheric pressure. When the pressure inside the tank exceeds atmospheric pressure, the gauge reports a positive value. Some gauges are designed to measure negative pressure. For example, many physics experiments must take place in a vacuum chamber, a rigid chamber from which some of the air is pumped...
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Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs
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Ultrawide-Range Wearable Pressure Sensors for High-Load Prosthetic Interfaces.

Tianhao Yu1, Axel González Cornejo2, Ziheng Wang1

  • 1School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.

ACS Nano
|December 21, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel wearable pressure sensor capable of detecting pressures from 70 Pa to 4 MPa. This ultrabroad range technology enhances biomedical applications, including advanced prosthetic devices.

Keywords:
pressure sensorsprostheticssmart textilesstretchable electronicswearable electronics

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Nanotechnology

Background:

  • Wearable pressure sensors are crucial for biomedical applications like prosthetics and surgical tools.
  • Existing sensors have limited pressure ranges (≤100 kPa), hindering use in high-pressure environments such as prosthetic sockets.

Purpose of the Study:

  • To develop a wearable pressure sensor with an ultrabroad detection range.
  • To overcome the limitations of current sensors in high-pressure biomedical applications.

Main Methods:

  • Utilized poly(diallyldimethylammonium chloride) (PDDA) as a molecular binder.
  • Employed electrostatic anchoring of multiwalled carbon nanotubes within a polyurethane foam scaffold.
  • Implemented a PDDA-assisted layer-by-layer assembly technique.

Main Results:

  • Achieved an ultrabroad pressure detection range from 70 Pa to 4 MPa.
  • Created a stable, homogeneous, and highly compressible conductive network.
  • Demonstrated preserved sensitivity across subtle and extreme pressures.

Conclusions:

  • The developed sensor offers one of the widest pressure ranges for wearable systems.
  • Integration into a smart sheath for lower-limb prosthetics enabled real-time pressure mapping.
  • Presents a viable solution for continuous, high-pressure monitoring in demanding wearable applications.