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Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
Published on: December 7, 2015
Vertically aligned multiwalled carbon nanotubes for pressure, tactile and vibration sensing
O Yilmazoglu1, A Popp, D Pavlidis
1Department of High Frequency Electronics, Technische Universität Darmstadt, Darmstadt, Germany. yilmazoglu@hfe.tu-darmstadt.de
Nanotechnology
|February 2, 2012
Summary
Researchers developed a novel method for creating flexible, vertically aligned carbon nanotube (CNT) arrays for highly sensitive piezoresistive sensors. These sensors demonstrate excellent performance for tactile sensing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- Flexible electronics require novel materials for advanced sensing.
- Carbon nanotubes (CNTs) offer unique electrical and mechanical properties.
Purpose of the Study:
- To develop a micro-nano integration method for flexible CNT arrays.
- To investigate the electromechanical properties of these arrays for tactile sensing.
Main Methods:
- Utilized a porous alumina template for vertically aligned multiwalled CNT growth.
- Integrated CNT arrays between carbon layers using standard microfabrication.
- Investigated piezoresistive behavior under mechanical stress.
Main Results:
- Achieved flexible, vertically aligned CNT arrays with high sensitivity.
- Demonstrated a resistance decrease of up to ~35% under stress.
- Obtained a spatial resolution of less than 1 mm for sensors.
Conclusions:
- Developed CNT structures suitable for tactile sensing components.
- Confirmed the feasibility of accessing nanoscopic CNT bundles via lithography.
- The room-temperature processing method is compatible with microfabrication.
