Abstract
Fiber scanning for forward-view imaging method has been widely used in biomedical imaging. It also attracts great interest in the fields of virtual and augmented reality. In this study, we propose a fiber scanner actuated by a robust Cu/W electrothermal MEMS stage which can be driven quasi-statically. The Cu/W MEMS stage is successfully fabricated after overcoming Cu oxidization. Compared to previous Al/SiO2 MEMS stages, this new Cu/W MEMS stage, which generates 0.7 mN forces at 1.8 V, offers three times more force. The MEMS stage can travel up to 53 μm at only 1.8 V. A single-mode fiber is assembled on the central platform of the MEMS stage to form a fiber scanner. The travel range can be amplified by four times.
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