Control of photothermal liquid jets through microbubble Regulation: Fundamental mechanisms and Developing Strategies

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-09-26 DOI:10.1016/j.optlastec.2024.111845

Xing Wang , Yadong Xu , Jiliang Liu , Quanzhen Zhang , Hongyan Yin , Can Zhang , Laurence A. Belfiore , Sui Mao , Jianguo Tang

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引用次数: 0

Abstract

Plasmon-induced photoacoustic streaming, considered as a potential application for micro-pumps in microfluidics, currently encounters ongoing debates concerning its fundamental mechanisms. In this study, we investigate the crucial role played by microbubbles in generation of jets in an ethanol aqueous solution. The power density threshold for bubble generation and its dependency on jet initiation are confirmed and the microbubble behavior is well regulated by manipulating the laser and liquid properties. Through simulations coupling fluidic and thermal fields, the significant role of Marangoni effect is validated in jet formation. Specifically, the temperature gradient of microbubbles is determined to be a pivotal factor in the generation of collimated jets. Additionally, factors influencing jetting, such as microbubble size and temperature gradients are studied, and noticeably, a stabilized jet lasting over 4 h is achieved based upon.

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通过微气泡调节控制光热液体射流：基本机制与发展战略

等离子体诱导的光声流被认为是微流控技术中微泵的一种潜在应用，目前有关其基本机制的争论仍在继续。在本研究中，我们研究了微气泡在乙醇水溶液中产生射流的关键作用。研究证实了气泡产生的功率密度阈值及其对喷流启动的依赖性，并通过操纵激光和液体特性很好地调节了微气泡的行为。通过流场和热场耦合模拟，验证了马兰戈尼效应在射流形成中的重要作用。具体来说，微气泡的温度梯度被确定为产生准直射流的关键因素。此外，还研究了微气泡大小和温度梯度等影响射流的因素，并在此基础上实现了持续 4 小时以上的稳定射流。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems