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- W2071435520 abstract "A side optical actuation method is presented for a slender MR-compatible active 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 a laser delivered though optical fibers, producing needle tip bending. A prototype, with multiple side heating spots, 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 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." @default.
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- W2071435520 date "2012-05-01" @default.
- W2071435520 modified "2023-10-04" @default.
- W2071435520 title "An optical actuation system and curvature sensor for a MR-compatible active needle" @default.
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- W2071435520 doi "https://doi.org/10.1109/icra.2012.6224964" @default.
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