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Novel Surfactant-Induced MWCNTs/PDMS-Based Nanocomposites for Tactile Sensing Applications
Anindya Nag1,2, Nasrin Afsarimanesh3, Suresh Nuthalapati1,2
1Faculty of Electrical and Computer Engineering, Technische Universität Dresden, 01062 Dresden, Germany.
Materials (Basel, Switzerland)
|July 9, 2022
Summary
This study developed surfactant-enhanced multi-walled carbon nanotube/polydimethylsiloxane nanocomposites for tactile sensing. These materials show promising mechanical properties and fast response times for low-pressure applications.
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- Nanocomposite-based sensors are gaining importance due to superior electromechanical properties.
- Optimization of precursor materials is crucial for fabricating high-quality nanocomposites.
- Multi-walled carbon nanotubes (MWCNTs) offer excellent electrical conductivity, mechanical strength, and matrix compatibility.
Purpose of the Study:
- To develop and characterize surfactant-induced MWCNTs/PDMS-based nanocomposites for tactile sensing.
- To optimize the fabrication process for enhanced sensor performance.
- To evaluate the mechanical behavior and response time of the developed tactile sensors.
Main Methods:
- Fabrication of polydimethylsiloxane (PDMS) nanocomposites using optimized amounts of sodium dodecyl sulfonate (SDS) and MWCNTs as nanofillers.
- Characterization of the mechanical properties, including response to strain and Young's Modulus.
- Testing of sensor performance, focusing on response time and stability for low-pressure tactile sensing.
Main Results:
- The MWCNTs/PDMS nanocomposites demonstrated robust mechanical behavior, responding well to a maximum strain of 40%.
- The sensors exhibited a fast response time of 1 millisecond with stable and repeatable output.
- The Young's Modulus of the developed sensors was measured to be 2.06 MPa.
Conclusions:
- Surfactant-induced MWCNTs/PDMS nanocomposites are effective for tactile sensing applications.
- The optimized fabrication process yields sensors with excellent mechanical properties and rapid response.
- These nanocomposites represent a promising advancement for low-pressure tactile sensing technologies.
