Abstract
An active guide wire of 0.5 mm outer diameter has been developed. The guide wire has a simple and flexible structure that consists of a NiTi shape memory alloy (SMA) bending actuator with meandering shape and a bias coil that is covered with thin polyurethane tube. It can bend to one-direction by heating with electric current and is restored by the bias coil. Large current was necessary to bend the guide wire in water, however, it could bend over 60°. The rise of the surface temperature of the guide wire was less than 5°C in water. The SMA bending actuator has been photo-fabricated from a flatten SMA sheet which was spread flat after it was memorized in curve-shape. In order to fabricate the actuator below the transition temperature of the SMA, a room temperature photo-fabrication process has been also developed.
| Original language | English |
|---|---|
| Pages (from-to) | 632-637 |
| Number of pages | 6 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 97-98 |
| DOIs | |
| Publication status | Published - 2002 Apr 1 |
| Event | Transducers'01 Eurosensors XV - Munich, Germany Duration: 2001 Jun 10 → 2001 Jun 14 |
Keywords
- Active guide wire
- Photo-fabrication
- SMA actuator
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering