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Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
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Waterproof Graphene-PVDF Wearable Strain Sensors for Movement Detection in Smart Gloves
Hossein Cheraghi Bidsorkhi1,2, Alessandro Giuseppe D'Aloia1,2, Alessio Tamburrano1,2
1Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy.
Sensors (Basel, Switzerland)
|August 28, 2021
Summary
New graphene-based flexible strain sensors using polyvinylidene fluoride (PVDF) nanocomposites were developed. These wearable sensors accurately detect strain and movement, even small finger joint motions, showing great potential for practical applications.
Area of Science:
- Materials Science
- Nanotechnology
- Wearable Electronics
Background:
- Flexible strain sensors are crucial for wearable technology.
- Developing highly sensitive and reproducible sensors remains a challenge.
Purpose of the Study:
- To produce novel graphene-based flexible strain sensors.
- To assess the performance of polyvinylidene fluoride (PVDF) nanocomposite films with graphene nanoplatelets (GNPs) for strain and movement detection.
Main Methods:
- Fabrication of PVDF/GNP nanocomposite films with varying GNP content.
- Morphological, waterproofness, electrical, mechanical, and electromechanical characterization.
- Integration of sensors into commercial gloves for testing.
Main Results:
- Consistent and reproducible strain sensor response observed.
- A Gauge factor of approximately 30 was achieved for 1% wt PVDF/GNP nanocomposite at 1.5% strain.
- Successfully demonstrated detection of small proximal interphalangeal joint movements.
Conclusions:
- PVDF/GNP nanocomposite films are effective for highly sensitive flexible strain sensing.
- The developed sensorized gloves show promise for advanced human movement monitoring.
