@inproceedings{941d6ee1104642d69b884aecdf919a61,
title = "An optical actuation system and curvature sensor for a MR-compatible active needle",
abstract = "A side optical actuation method is presented for a slender MR-compatible biopsy needle. The needle includes an active region with a shape memory alloy (SMA) wire actuator, where the wire generates a contraction force when optically heated by laser light delivered though optical fibers, producing needle tip bending. A prototype, with multiple side heating regions, demonstrates twice as fast an initial response compared to fiber tip heating when 0.8 W of optical power is applied. A single-ended optical sensor with a gold reflector is also presented to measure the curvature independently of temperature as a function of optical transmission loss. Preliminary tests with the sensor prototype demonstrate approximately linear response and a repeatable signal, independent of the bending history.",
author = "Ryu, \{Seok Chang\} and Quek, \{Zhan Fan\} and Pierre Renaud and Black, \{Richard J.\} and Daniel, \{Bruce L.\} and Cutkosky, \{Mark R.\}",
year = "2012",
doi = "10.1109/ICRA.2012.6224964",
language = "English",
isbn = "9781467314039",
series = "Proceedings - IEEE International Conference on Robotics and Automation",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1589--1594",
booktitle = "2012 IEEE International Conference on Robotics and Automation, ICRA 2012",
note = " 2012 IEEE International Conference on Robotics and Automation, ICRA 2012 ; Conference date: 14-05-2012 Through 18-05-2012",
}