Feedback-free microfluidic oscillator with impinging jets

Bertsch, Arnaud; Bongarzone, Alessandro; Duchamp, Margaux; Renaud, Philippe; Gallaire, François

doi:10.1103/physrevfluids.5.054202

Cited by 17 publications

(41 citation statements)

References 37 publications

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“…(2019) and Bertsch et al. (2020 a ), with microchannels crossing at right angles in both cases and liquid flows at relatively low values of the Reynolds number. However, in the geometry considered by Burshtein et al.…”

Section: Introductionmentioning

confidence: 86%

“…Although several plausible candidates were proposed by Bertsch et al. (2020 a ), no physical mechanism could be precisely identified from which the self-sustained oscillations would originate.…”

Section: Introductionmentioning

confidence: 99%

“…(2019) all channels have comparable dimension, whereas in Bertsch et al. (2020 a ) there are two facing narrow channels which open into wider channels. In Bertsch et al.…”

Section: Introductionmentioning

confidence: 99%

“…Recently Bertsch et al. (2020 a , b ) provided a detailed experimental and numerical description of the self-sustained oscillatory regime induced by the interaction of two impinging jets in microscale feedback-free fluidic devices operating in laminar flow conditions. While this work presents some similarities with the experimental observations proposed by Tesař (2009) Denshchikov, Kondrat'ev & Romashov (1978) and Denshchikov et al.…”

Section: Introductionmentioning

confidence: 99%

“…Bertsch et al. (2020 a ) studied the evolution of the self-oscillation frequency when the main geometric parameters of the cavity were changed. The frequency was shown to be proportional to the averaged flow velocity imposed at the symmetric inlets and inversely proportional to the distance between the jets.…”

Section: Introductionmentioning

confidence: 99%

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Impinging planar jets: hysteretic behaviour and origin of the self-sustained oscillations

et al. 2021

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Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

“…(2019) all channels have comparable dimension, whereas in Bertsch et al. (2020 a ) there are two facing narrow channels which open into wider channels. In Bertsch et al.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impinging planar jets: hysteretic behaviour and origin of the self-sustained oscillations

et al. 2021

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Impinging jet mixers: A review of their mixing characteristics, performance considerations, and applications

Devos,

Mukherjee,

Inguva

et al. 2024

AIChE Journal

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Optimal control over fast chemical processes hinges on the achievement of rapid and effective mixing. Impinging jet mixers are a unique class of passive mixing devices renowned for their exceptional ability to achieve rapid mixing at micro‐length scales, whilst offering the possibility of a high throughput. Comprising of two co‐linear jets flowing in opposite directions and colliding with each other within a small (usually confined) volume, these devices effectively intensify various mixing‐controlled processes in a reproducible manner. Impinging jet mixers find extensive use in both the chemical and pharmaceutical industry for a plethora of applications, such as reaction injection molding and precipitation processes. This review provides an overview of research related to impinging jet mixers, with an emphasis on the mixing characteristics and the influence of design and process parameters on the mixing performance. Lastly, specific applications for which these devices are exceptionally suited are discussed.

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Periodic Flows in Microfluidics

Mudugamuwa,

Roshan,

Hettiarachchi

et al. 2024

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Microfluidics, the science and technology of manipulating fluids in microscale channels, offers numerous advantages, such as low energy consumption, compact device size, precise control, fast reaction, and enhanced portability. These benefits have led to applications in biomedical assays, disease diagnostics, drug discovery, neuroscience, and so on. Fluid flow within microfluidic channels is typically in the laminar flow region, which is characterized by low Reynolds numbers but brings the challenge of efficient mixing of fluids. Periodic flows are time‐dependent fluid flows, featuring repetitive patterns that can significantly improve fluid mixing and extend the effective length of microchannels for submicron and nanoparticle manipulation. Besides, periodic flow is crucial in organ‐on‐a‐chip (OoC) for accurately modeling physiological processes, advancing disease understanding, drug development, and personalized medicine. Various techniques for generating periodic flows have been reported, including syringe pumps, peristalsis, and actuation based on electric, magnetic, acoustic, mechanical, pneumatic, and fluidic forces, yet comprehensive reviews on this topic remain limited. This paper aims to provide a comprehensive review of periodic flows in microfluidics, from fundamental mechanisms to generation techniques and applications. The challenges and future perspectives are also discussed to exploit the potential of periodic flows in microfluidics.

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Feedback-free microfluidic oscillator with impinging jets

Cited by 17 publications

References 37 publications

Impinging planar jets: hysteretic behaviour and origin of the self-sustained oscillations

Impinging planar jets: hysteretic behaviour and origin of the self-sustained oscillations

Impinging jet mixers: A review of their mixing characteristics, performance considerations, and applications

Periodic Flows in Microfluidics

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