Related Experiment Video
Updated: Dec 24, 2025
06:17
Production of a Strain-Measuring Device with an Improved 3D Printer
Published on: January 30, 2020
6.4K
Laser-Printed, Flexible Graphene Pressure Sensors
Altynay Kaidarova1, Nouf Alsharif1, Barbara Nicoly M Oliveira1
1Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Kingdom of Saudi Arabia.
Global Challenges (Hoboken, NJ)
|April 8, 2020
Summary
Laser-printed graphene sensors offer a scalable solution for pressure sensing. These flexible, biocompatible devices demonstrate high sensitivity and stability for diverse healthcare and underwater applications.
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- Graphene's unique properties are hindered by large-scale production challenges.
- Laser printing offers an efficient, single-step method for graphene fabrication on flexible substrates.
Purpose of the Study:
- To develop a flexible pressure sensor using laser-printed 3D porous graphene.
- To evaluate the sensor's performance, biocompatibility, and suitability for underwater applications.
Main Methods:
- Fabrication of 3D porous graphene via laser printing on polyimide films.
- Characterization of sensor performance, including sensitivity, dynamic range, and stability.
- Biocompatibility assessment using cytotoxicity assays and fluorescent staining.
- Testing of polymethyl methacrylate (PMMA) coated sensors in simulated Red Sea conditions.
Main Results:
- Achieved sensitivity of 1.23 × 10-3 kPa with a detection limit of 10 Pa and a dynamic range of at least 20 MPa.
- Demonstrated excellent long-term stability over 15,000 cycles.
- Confirmed insignificant cytotoxicity, indicating good biocompatibility.
- PMMA coating enabled robust underwater operation at 2 km depth in high salinity.
Conclusions:
- Laser-printed graphene pressure sensors are a viable, scalable technology.
- The sensors exhibit excellent performance metrics and biocompatibility for healthcare applications like heart rate monitoring and tactile sensing.
- Enhanced durability with PMMA coating makes them suitable for challenging underwater environments.
