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Title: Mid-Air Particle Manipulations by a 2x2 PMUT Array
This work reports a platform based on ultrasound for mid-air particle manipulations using a 2×2 piezoelectric micromachined ultrasonic transducer (pMUT) array. Three achievements have been demonstrated as compared to the state-of-art: (1) high SPL (sound pressure level) of 120 dB at a distance 12 mm away by an individual lithium-niobate pMUT; (2) a numerically simulated and experimentally demonstrated 2D focal point control scheme by adjusting the phase-delay of individual pMUTs; and (3) the experimental demonstration of moving a 0.7 mg foam plastic particle of 12 mm away in the mid-air by ~1.8 mm. As such, this work shows the potential for practical applications in the broad fields of non-contact actuations, including particle manipulations in microfluidics, touchless haptic sensations, … etc.  more » « less
Award ID(s):
2128311
PAR ID:
10548617
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ;
Publisher / Repository:
Transducers Research Foundation
Date Published:
Format(s):
Medium: X
Location:
Hilton Head Island
Sponsoring Org:
National Science Foundation
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