Phenomenological Investigation of Drop Manipulation Using Surface Acoustic Waves

Noori, Mahdi Sheikholeslam; Taleghani, Arash Shams; Rahni, Mohammad Taeibi

doi:10.1007/s12217-020-09839-3

Cited by 17 publications

(7 citation statements)

References 30 publications

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“…Figure 17. Simulation results at 10ms for resonant frequency 199.4MHz at different surface wettability…”

Section: B Effect Of Surface Wettabilitymentioning

confidence: 99%

“…The findings show good agreement with the analytical solutions, demonstrating a viability of using the LB in the exploration of SAW effects on liquids. More recently, Sheikholeslam Noori et al [16,17] developed a two-dimensional (2D) droplet based SAW interaction model using the colourgradient LB methodology. The study reported the minimum amplitude required to initiate streaming, pumping and jetting states for a Lithium Niobate (LiNbO3) substrate at various resonant frequencies.…”

Section: Introductionmentioning

confidence: 99%

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Simulations of surface acoustic wave interactions on a sessile droplet using a three-dimensional multiphase lattice Boltzmann model

et al. 2021

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“…Figure 17. Simulation results at 10ms for resonant frequency 199.4MHz at different surface wettability…”

Section: B Effect Of Surface Wettabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulations of surface acoustic wave interactions on a sessile droplet using a three-dimensional multiphase lattice Boltzmann model

et al. 2021

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“…Noori et al [ 62 , 63 , 64 , 65 ] utilized a multiple-relaxation-time color-gradient model lattice Boltzmann method to establish a two-dimensional (2D) model for the interaction between droplets and SAWs ( Figure 3 a–c). By introducing a contact angle hysteresis model, the numerical accuracy was improved by 20% [ 62 ].…”

Section: Fundamentals Of Adementioning

confidence: 99%

“…By introducing a contact angle hysteresis model, the numerical accuracy was improved by 20% [ 62 ]. Combining LBM with experimental analysis of lithium niobate and zinc oxide-silicon devices, it was found that under the injection mode, a pair of oppositely rotating vortices was formed near the droplet, with stronger vortices observed on the zinc oxide-silicon device, resulting in a 70% reduction in droplet separation time [ 63 ]. Additionally, LBM simulation results showed that viscosity reduction, hydrophobicity, and surface tension coefficient increase significantly affected the flow and jetting control system and increased its sensitivity [ 64 ].…”

Section: Fundamentals Of Adementioning

confidence: 99%

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A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

Ning,

Lei,

et al. 2023

Micromachines

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This review focuses on the development of surface acoustic wave-enabled acoustic drop ejection (SAW-ADE) technology, which utilizes surface acoustic waves to eject droplets from liquids without touching the sample. The technology offers advantages such as high throughput, high precision, non-contact, and integration with automated systems while saving samples and reagents. The article first provides an overview of the SAW-ADE technology, including its basic theory, simulation verification, and comparison with other types of acoustic drop ejection technology. The influencing factors of SAW-ADE technology are classified into four categories: fluid properties, device configuration, presence of channels or chambers, and driving signals. The influencing factors discussed in detail from various aspects, such as the volume, viscosity, and surface tension of the liquid; the type of substrate material, interdigital transducers, and the driving waveform; sessile droplets and fluid in channels/chambers; and the power, frequency, and modulation of the input signal. The ejection performance of droplets is influenced by various factors, and their optimization can be achieved by taking into account all of the above factors and designing appropriate configurations. Additionally, the article briefly introduces the application scenarios of SAW-ADE technology in bioprinters and chemical analyses and provides prospects for future development. The article contributes to the field of microfluidics and lab-on-a-chip technology and may help researchers to design and optimize SAW-ADE systems for specific applications.

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Acoustofluidic Tweezers Integrated with Droplet Sensing Enable Multifunctional Closed‐Loop Droplet Manipulation

Sui,

Dong,

et al. 2024

Advanced Science

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Droplet manipulation technologies with surface acoustic waves attract significant attention for applications in fluid handling and bioanalysis. However, existing technologies face challenges in automation, precision, and functional integration, limiting broader applications. In this work, a highly integrated droplet‐sensing acoustofluidic tweezer is developed, incorporating orthogonally arranged slanted finger interdigital transducers and a custom‐designed control and detection circuit system. Using a single acoustic device, this tweezer enables switchable acoustic droplet manipulation and detection, providing multifunctional closed‐loop manipulation of on‐chip microliter‐scale droplets. The platform takes advantage of the wideband frequency response characteristics of the transducers, along with an automated droplet detection algorithm, enabling high‐precision detection of central positions, edge positions, contact diameters, and the number of droplets. With this feedback, automated closed‐loop control of various droplet manipulation functions, including transportation, merging, mixing, splitting, and internal particle enrichment, is achieved for the first time on a single acoustic platform. This significantly enhances the precision, efficiency, and fault tolerance of the manipulation process. This droplet‐sensing acoustofluidic tweezer provides an innovative acoustic solution for droplet manipulation technologies in fields such as fluid processing and biosensing, demonstrating significant application potential.

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Phenomenological Investigation of Drop Manipulation Using Surface Acoustic Waves

Cited by 17 publications

References 30 publications

Simulations of surface acoustic wave interactions on a sessile droplet using a three-dimensional multiphase lattice Boltzmann model

Simulations of surface acoustic wave interactions on a sessile droplet using a three-dimensional multiphase lattice Boltzmann model

A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

Acoustofluidic Tweezers Integrated with Droplet Sensing Enable Multifunctional Closed‐Loop Droplet Manipulation

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