Investigation of a Novel Acoustic Levitation Technique Using the Transition Period Between Acoustic Pulse Trains and Electrical Driving Signals

Lin, Fu-Sung; Yang, Ping-Feng; Hsieh, Ching-Chuan; Su, Hsin-Yi; Chen, Lixiang; Li, Chih–Ying; Huang, Chih-Hsien

doi:10.1109/tuffc.2021.3124278

Cited by 7 publications

(2 citation statements)

References 55 publications

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“…However, the effect of spatial step size on manipulation performance needs to be further investigated, and the effects of update rates in acoustic manipulation have rarely been studied in the literature. Furthermore, the update rate selection has not been appropriately addressed, with the update rate being set between 200 Hz and 2 kHz in most current studies [25,34,35], even up to 40 kHz [20].…”

Section: Introductionmentioning

confidence: 99%

Effects and selection of update rates in acoustic levitator

Jiang,

Wang,

Chen

et al. 2024

Meas. Sci. Technol.

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Acoustic manipulation holds excellent potential for applications in life sciences, medicine, physics, and contactless measurement with non-contact, versatility, and safety advantages. The update rate (control frequency) plays a critical role in determining the performance of acoustic manipulation. However, few studies have investigated this aspect. To address this gap, this paper investigated the effects and selection of the update rate in acoustic manipulation by analyzing the dynamic characteristics of the levitated object and discussing the hardware constraints. The results revealed that the update rate significantly impacts manipulation performance. It is closely related to the rise time, defined as the duration for a system response to rise from zero to its final value. Simulations and physical experiments verified this conclusion. Furthermore, we found that when the update rate is less than the reciprocal of the rise time, an increase in the update rate leads to a significant improvement in performance, with a monotonically increasing relationship. This implies that the update rate can be selected according to the rise time. It is recommended that the update rate be chosen beyond the reciprocal of the rise time, for optimal performance. These findings will help optimize acoustic manipulation performance and facilitate further development and application of acoustic manipulation technology.

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Section: Introductionmentioning

confidence: 99%

Effects and selection of update rates in acoustic levitator

Jiang,

Wang,

Chen

et al. 2024

Meas. Sci. Technol.

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“…It has been shown that intricate, readily tuneable pressure fields can be constructed by using an array of small ultrasonic transducers 15,16 , allowing for manipulation of multiple objects in three dimensions. The discovery that an array of ultrasonic transducers can create customisable acoustic levitation systems has led to a resurgence in the study of non-contact manipulation using acoustic levitation techniques [17][18][19][20] .…”

mentioning

confidence: 99%

Sonomaglev: Combining acoustic and diamagnetic levitation

Hunter-Brown

Sampara

Scase

et al. 2023

Applied Physics Letters

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Acoustic levitation and diamagnetic levitation are experimental methods that enable the contact-free study of both liquid droplets and solid particles. Here, we combine both the techniques into a single system that takes advantage of the strengths of each, allowing for the manipulation of levitated spherical water droplets (30 nl–14 μl) under conditions akin to weightlessness, in the laboratory, using a superconducting magnet fitted with two low-power ultrasonic transducers. We show that multiple droplets, arranged horizontally along a line, can be stably levitated with this system and demonstrate controlled contactless coalescence of two droplets. Numerical simulation of the magnetogravitational and acoustic potential reproduces the multiple stable equilibrium points observed in our experiments.

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