Non-contact droplet manipulation and its dynamics based on acoustic levitation

Zhang, ZeHui; Liu, KangQi; Di, Wenli; Chen, Zhe; Zang, Duyang

doi:10.1360/sspma-2020-0134

Cited by 4 publications

(1 citation statement)

References 125 publications

(135 reference statements)

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“…Tan等人 [24] 研究了超疏水表面上由液滴蒸发引起的Ouzo效应, 发现疏水性油会沉积在表面, 形成表面纳米液滴. Lu等人 [25] [26] , 其基本原理是利用声波的非线性效应产生声辐射力, 抵消样品自身重力, 从而实现液滴悬浮 [27][28][29] . 由于液滴的形状容易发生改变相对挥发性较大的乙醇会优先在局部触发Ouzo效应.…”

Section: 域中可以用于制备光学性能可调的微透镜、重金属分unclassified

Dynamics of acoustically levitated drops with Ouzo effect

Feng

Zhang

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

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Section: 域中可以用于制备光学性能可调的微透镜、重金属分unclassified

Dynamics of acoustically levitated drops with Ouzo effect

Feng

Zhang

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

Self Cite

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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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Effect of array arrangement on acoustic levitation performance

Chen,

Qiao,

Fan

et al. 2024

Meas. Sci. Technol.

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Acoustic levitation manipulation technology holds significant potential for applications in chemistry, biology, medicine, and micro-robotics due to its contact-less, adaptability, and safety advantages. The use of ultrasonic phased array is widespread in acoustic levitation, and the arrangement of the array plays a crucial role in this process. This study investigates the impact of array arrangement on concave and planar arrays. The acoustic levitation performance of concave and planar arrays is analysed with the maximum acoustic radiation force (ARF) and levitation range. The results indicate that concave and planar arrays exhibit similar trends with height in terms of ARF and levitation range and having a maximum value (for concave array, R = 38 mm and H = 67 mm in the z-axis, R = 34 mm and H = 61 mm in the x-axis, and for planar array, H = 66 mm in the long side and H= 55 mm in the short side). However, each array type’s ARF and levitation range variety follow opposite trends, with a maximum value when R = 90 mm and H = 195 mm for concave array and H = 165 mm for planar array. Adjusting the inclination of the array makes it possible to enhance the ARF and expand the control range. Furthermore, the optimal operating region of a concave array is concentrated at the intersection of the spherical axis (R = H/2 when varying the curvature and height, ϕ = φ when rotavating), while the planar array offers a broader range of manipulation due to its insensitivity to minor variations. This research reveals the influence of array arrangement on ARF and levitation range, providing valuable insights for designing and optimizing acoustic levitation devices.

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Non-contact droplet manipulation and its dynamics based on acoustic levitation

Cited by 4 publications

References 125 publications

Dynamics of acoustically levitated drops with Ouzo effect

Dynamics of acoustically levitated drops with Ouzo effect

Effects and selection of update rates in acoustic levitator

Effect of array arrangement on acoustic levitation performance

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