Abstract
This study presents the design and high-precision
fabrication of 3D printed strain sensors, which feature
graphene nanoplatelet based piezoresistive sensing elements.
The strain sensor features fully encapsulated microfluidic
inner channels, 500µm in diameter, created using Projection
Micro Stereolithography (PµSL) 3D printing technology. A
flexible printed strain sensor was achieved through the
creation of a custom resin mixture. The strain gauges were
printed in 20 µm layers, resulting in a dimensional printing
error rate of less than 3%, and exhibited fine structural
details and high resolution. Graphene nanoplatelet inks of
three different concentrations (5%, 10%, and 20%) were
used to form the piezoresistive sensing elements. The gauge
factors (GFs) for the 10% and 20% strain sensors were
determined to be 28 and 19, respectively. The strain sensor
with the lowest concentration (5%) showed a high GF of 13.5
and 564 in the strain ranges 0% to 13% and 13% to 18.5%.
These findings introduce PµSL 3D printing as a method to
form flexible piezoresistive strain sensors and highlight the
impact of nanomaterial concentration on piezoresistive
performance, demonstrating a potential for applications in
customized, high-performance strain sensors.
fabrication of 3D printed strain sensors, which feature
graphene nanoplatelet based piezoresistive sensing elements.
The strain sensor features fully encapsulated microfluidic
inner channels, 500µm in diameter, created using Projection
Micro Stereolithography (PµSL) 3D printing technology. A
flexible printed strain sensor was achieved through the
creation of a custom resin mixture. The strain gauges were
printed in 20 µm layers, resulting in a dimensional printing
error rate of less than 3%, and exhibited fine structural
details and high resolution. Graphene nanoplatelet inks of
three different concentrations (5%, 10%, and 20%) were
used to form the piezoresistive sensing elements. The gauge
factors (GFs) for the 10% and 20% strain sensors were
determined to be 28 and 19, respectively. The strain sensor
with the lowest concentration (5%) showed a high GF of 13.5
and 564 in the strain ranges 0% to 13% and 13% to 18.5%.
These findings introduce PµSL 3D printing as a method to
form flexible piezoresistive strain sensors and highlight the
impact of nanomaterial concentration on piezoresistive
performance, demonstrating a potential for applications in
customized, high-performance strain sensors.
Original language | English |
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Title of host publication | IEEE SENSORS 2024 |
Subtitle of host publication | The 23rd IEEE Conference on Sensors |
Publisher | IEEE |
ISBN (Electronic) | 979-8-3503-6351-7 |
ISBN (Print) | 979-8-3503-6352-4 |
DOIs | |
Publication status | Published - 17-Dec-2024 |
Event | IEEE Sensors 2024 - Japan, Kobe, Japan Duration: 20-Oct-2024 → 23-Oct-2024 https://2024.ieee-sensorsconference.org/ |
Conference
Conference | IEEE Sensors 2024 |
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Abbreviated title | IEEE Sensors 2024 |
Country/Territory | Japan |
City | Kobe |
Period | 20/10/2024 → 23/10/2024 |
Internet address |
Keywords
- Flexible electronics
- Bioinspiration
- MEMS
- Piezoresistive sensors
- Sensors