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. Author manuscript; available in PMC: 2020 Sep 25.
Published in final edited form as: IEEE Trans Med Robot Bionics. 2019 Apr 22;1(2):77–87. doi: 10.1109/tmrb.2019.2912444

Fig. 4.

Fig. 4.

Development of the NICHE robot: (a) NICHE robot prototype mounted on a fixed headframe, (b) design of the SMA torsion actuator and fiberoptic rotation sensor, (c) prototype of the sensor rotor with the brass reflector, and (d) demonstration of tip articulation under feedback control.