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Title: Subminiature Underwater Propeller with Electrical Controllability of Steering
This paper describes a subminiature underwater ultrasonic propeller with electrically controllability over its propulsion direction. Built on a 200-micron thick nickel-coated lead zirconate titanate (PZT) substrate, the propeller consists of 28 sectors of individually accessible Fresnel lens that are composed of Parylene air-cavity-reflectors on top of the frontside nickel electrode. A backside Fresnel air-reflector is added to prevent any propulsion from the backside that may cancel the propulsion from the front side. The fabricated propeller (4 x 4 mm2 in size and 37.5 mg in weight) is demonstrated to have control over its advancing direction when assembled on an air-filled capsule.  more » « less
Award ID(s):
2017926
NSF-PAR ID:
10329988
Author(s) / Creator(s):
;
Date Published:
Journal Name:
2021 IEEE International Ultrasonics Symposium (IUS)
Page Range / eLocation ID:
1 to 4
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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