Design and fabrication of a vigorous“cavitation-on-a-chip”device with a multiple microchannel configuration

查看全文 作　　者：Farzad Rokhsar [1,2]Talabazar;Mohammad [1,2]Jafarpour;Merve [1,3]Zuvin;Hongjian [4]Chen;Moein Talebian [5]Gevari;Luis Guillermo [3]Villanueva;Dmitry [4]Grishenkov;Ali [1,2,6]Koşar;Morteza [2,4,6]Ghorbani

机构地区：[1]Faculty of Engineering and Natural Science,Sabanci University,Tuzla,Istanbul,Turkey;[2]Sabanci University Nanotechnology Research and Application Center,Tuzla,Istanbul,Turkey;[3]Advanced NEMS Laboratory,École Polytechnique Fédérale de Lausanne(EPFL),CH-1015,Lausanne,Switzerland;[4]Department of Biomedical Engineering and Health Systems,KTH Royal Institute of Technology,SE-14157,Stockholm,Sweden;[5]Division of Solid State Electronics,Department of Electrical Engineering,TheÅngström Laboratory,Uppsala University,Uppsala,Sweden;[6]Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics(EFSUN),Sabanci University,Orhanli,Tuzla,Istanbul,Turkey

出　　处：《Microsystems & Nanoengineering》索引2021年第7卷第3期,共13页

基　　金：This work was supported by internal funding of the KTH Energy Platform and TUBITAK(The Scientific and Technological Research Council of Turkey)Support Program for Scientific and Technological Research Project(Grant No.217M869). 摘　　要：Hydrodynamic cavitation is one of the major phase change phenomena and occurs with a sudden decrease in the local static pressure within a fluid.With the emergence of microelectromechanical systems(MEMS),high-speed microfluidic devices have attracted considerable attention and been implemented in many fields,including cavitation applications.In this study,a new generation of‘cavitation-on-a-chip’devices with eight parallel structured microchannels is proposed.This new device is designed with the motivation of decreasing the upstream pressure(input energy)required for facile hydrodynamic cavitation inception.Water and a poly(vinyl alcohol)(PVA)microbubble(MB)suspension are used as the working fluids.The results show that the cavitation inception upstream pressure can be reduced with the proposed device in comparison with previous studies with a single flow restrictive element.Furthermore,using PVA MBs further results in a reduction in the upstream pressure required for cavitation inception.In this new device,different cavitating flow patterns with various intensities can be observed at a constant cavitation number and fixed upstream pressure within the same device.Moreover,cavitating flows intensify faster in the proposed device for both water and the water–PVA MB suspension in comparison to previous studies.Due to these features,this next-generation‘cavitation-on-a-chip’device has a high potential for implementation in applications involving microfluidic/organ-on-a-chip devices,such as integrated drug release and tissue engineering. 关键词：CAVITATION BUBBLE FASTER

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Design and fabrication of a vigorous“cavitation-on-a-chip”device with a multiple microchannel configuration

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