Rapid acoustofluidic mixing by ultrasonic surface acoustic wave-induced acoustic streaming flow

Cha, Beomseok; Lee, Song Ha; Iqrar, Syed Atif; Yi, Hee-Gyeong; Kim, Jangho; Park, Jinsoo

doi:10.1016/j.ultsonch.2023.106575

Cited by 13 publications

(2 citation statements)

References 61 publications

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“…[213] Studies have evaluated and explored ultrasonic surface acoustic wave (SAW)-based acoustic-fluidic mixers, such as cross-type SAW-based micromixers [214] and vertical-type SAWbased micromixers improved mixing efficiency and controllability. [215] Microfluidic devices offer excellent control over microbubble size, yielding more uniform microbubbles. Typical devices with cross-flow or T-junction architecture can produce microbubbles with clinically applicable diameters (1-10 μm).…”

Section: Microreactors and Microfluidicsmentioning

confidence: 99%

The Evolution of Sonochemistry: From the Beginnings to Novel Applications

Rosales Pérez,

Esquivel Escalante

2024

ChemPlusChem

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Sonochemistry is the use of ultrasonic waves in an aqueous medium, producing acoustic cavitation. In this context, sonochemistry emerged as a focal point over the past few decades, starting as a manageable process such as radar or cleaning technique; now, it is finding wide‐ranging applications across various chemical, physical, and biological processes, creating an opportunity area of analysis between these areas. Sonochemistry is a powerful and eco‐friendly technique often called “green chemistry” for less energy use, toxic reagents, and residues generation, among others. It is increasing the number of applications achieved through the ultrasonic irradiation (USI) method. Sonochemistry has been established as a sustainable and cost‐effective alternative in comparison with the traditional industrial methods, promoting scientific and social well‐being, offering no‐destructive advantages, including rapid processes, improved process efficiency, enhanced product quality, and, in some cases, the retention of key quality characteristics of the products. This versatile technology has significantly contributed to the food industry, materials technology, environmental remediation, and biological research. This review is created with enthusiasm and focus on shedding light on the manifold applications of sonochemistry. It delves into this technique's evolution and current applications in cleaning, environmental remediation, microfluidic, biological, and medical fields.

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Section: Microreactors and Microfluidicsmentioning

confidence: 99%

The Evolution of Sonochemistry: From the Beginnings to Novel Applications

Rosales Pérez,

Esquivel Escalante

2024

ChemPlusChem

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“…Higher-power acoustic streaming can produce more intense and rapid flow patterns, leading to faster and more efficient fluid mixing. A study on rapid acoustofluidic mixing via ultrasonic surface-acoustic-wave-induced acoustic streaming demonstrated that the velocity of the acoustic streaming flow is proportional to acoustic power density [13]. On the other hand, evidence shows that higher power can lead to higher temperatures in acoustofluidic chips.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Performance of an Acoustofluidic Device by Integrating Temperature Control

Hashemiesfahan,

Gelin,

Maisto

et al. 2024

Micromachines

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Acoustofluidics is an emerging research field wherein either mixing or (bio)-particle separation is conducted. High-power acoustic streaming can produce more intense and rapid flow patterns, leading to faster and more efficient liquid mixing. However, without cooling, the temperature of the piezoelectric element that is used to supply acoustic power to the fluid could rise above 50% of the Curie point of the piezomaterial, thereby accelerating its aging degradation. In addition, the supply of excessive heat to a liquid may lead to irreproducible streaming effects and gas bubble formation. To control these phenomena, in this paper, we present a feedback temperature control system integrated into an acoustofluidic setup using bulk acoustic waves (BAWs) to elevate mass transfer and manipulation of particles. The system performance was tested by measuring mixing efficiency and determining the average velocity magnitude of acoustic streaming. The results show that the integrated temperature control system keeps the temperature at the set point even at high acoustic powers and improves the reproducibility of the acoustofluidic setup performance when the applied voltage is as high as 200 V.

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Acoustic Waves Coupling with Polydimethylsiloxane in Reconfigurable Acoustofluidic Platform

Park,

Cha,

Almus

et al. 2024

Advanced Science

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Acoustofluidics is a promising technology that leverages acoustic waves for precise manipulation of micro/nano‐scale flows and suspended objects within microchannels. Despite many advantages, the practical applicability of conventional acoustofluidic platforms is limited by irreversible bonding between the piezoelectric actuator and the microfluidic chip. Recently, reconfigurable acoustofluidic platforms are enabled by reversible bonding between the reusable actuator and the replaceable polydimethylsiloxane (PDMS) microfluidic chip by incorporating a PDMS membrane for sealing the microchannel and coupling the acoustic waves with the fluid inside. However, a quantitative guideline for selecting a suitable PDMS membrane for various acoustofluidic applications is still missing. Here, a design rule for reconfigurable acoustofluidic platforms is explored based on a thorough investigation of the PDMS thickness effect on acoustofluidic phenomena: acousto–thermal heating (ATH), acoustic radiation force (ARF), and acoustic streaming flow (ASF). These findings suggest that the relative thickness of the PDMS membrane (t) for acoustic wavelength (λPDMS) determines the wave attenuation in the PDMS and the acoustofluidic phenomena. For t/λPDMS ≈ O(1), the transmission of acoustic waves through the membrane leads to the ARF and ASF phenomena, whereas, for t/λPDMS ≈ O(10), the acoustic waves are entirely absorbed within the membrane, resulting in the ATH phenomenon.

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Rapid acoustofluidic mixing by ultrasonic surface acoustic wave-induced acoustic streaming flow

Cited by 13 publications

References 61 publications

The Evolution of Sonochemistry: From the Beginnings to Novel Applications

The Evolution of Sonochemistry: From the Beginnings to Novel Applications

Enhanced Performance of an Acoustofluidic Device by Integrating Temperature Control

Acoustic Waves Coupling with Polydimethylsiloxane in Reconfigurable Acoustofluidic Platform

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