Enhanced effective diffusion in sub-wavelength, axon-scale microchannels using surface acoustic waves

D Peng; W Tong; DJ Collins; MR Ibbotson; S Prawer; MEM Stamp

Journal article

Enhanced effective diffusion in sub-wavelength, axon-scale microchannels using surface acoustic waves

D Peng, W Tong, DJ Collins, MR Ibbotson, S Prawer, MEM Stamp

Physics of Fluids | AIP Publishing | Published : 2023

DOI: 10.1063/5.0134605

Abstract

Excitation using surface acoustic waves (SAW) has demonstrated efficacy in improving microscale particle/chemical transport due to its ability to generate microscale wavelengths. However, the effects of acoustic stimulation on transport processes along the length of sub-wavelength microchannels and their underlying mechanisms, essential for long-range transport, have not been examined in detail. In this work, we investigate diffusion along the length of subwavelength microchannels using experimental and simulation approaches, demonstrating enhanced transport under SAW excitation. The microchannel-based enhanced diffusion mechanisms are further studied by investigating the acoustic pressure a..

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University of Melbourne Researchers

Wei Tong Author

David Collins Author

Michael Ibbotson Author

Steven Prawer Author

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Grants

Awarded by Australian Research Council

Funding Acknowledgements

This research was funded by the University of Melbourne; Early Career Researcher Grants Scheme, 2019 (ID 1858934). This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). The research was also supported by a Development Grant from the National Health and Medical Research Council (NHMRC and No. GNT1118223) of Australia. Dr. Tong acknowledges the support from a Linkage Grant from the Australian Research Council (No. LP180100638). Dr. Collins is the recipient of a Discovery Early Career Researcher Award from the Australian Research Council (DECRA, No. DE200100909), and funding from the National Health and Medical Research Council (Ideas, No. APP2003446).