Ultrahigh X-ray imaging operando study of sonoprocessing of advanced structural and functional materials

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Correlative and Multimodal X-ray Microscopy
Professor Jiawei Mi (1), Mi Kang Xiang (1), Mr Shi Huang (1)
1. University of Hull

Synchrotron X-ray, X-ray free electron laser, ultrahigh imaging, ultrasound processing, structural materials, functional materials

Abstract text

Applying ultrasonic waves in the syntheses or manufacturing of materials is generally termed as sonoprocessing. It involves many nonlinear dynamic phenomena and processes, for example alternating pressure induced cavitation bubbles dynamics, acoustic streaming flow [1], liquid-bubble-solid interactions [2], etc. Many fundamental issues or governing laws in these processes are either not fully understood or not fully quantified. It is due to mainly the difficulty in directly observing the dynamic phenomena in-situ and in real time operando conditions [3,4]. 

Here, we report our very recent outcomes from operando study of the dynamics of nano/microparticles dispersion and exfoliation of 2D materials under ultrasound. We used the ultrafast synchrotron X-ray and MHz imaging capability available at the EU X-ray free electron laser facility. The unique world leading capability allow us to observe directly the interactions of liquid, bubble and solid particles, providing essential data for understanding the ns scale microfluidic dynamics in sonoprocessing of materials [1-4].


[1] B. Wang, D. Tan, TL. Lee, JC. Khong, F. Wang, DG. Eskin, T. Connolley, K. Fezzaa, J. Mi, Ultrafast synchrotron X-ray imaging studies of microstructure fragmentation in solidification under ultrasound, Acta Materialia Vol. 144, Feb 2018, Pages 505-515, doi: 10.1016/j.actamat.2017.10.067

[2] L. Qin, K. Porfyrakis, I. Tzanakis, N. Grobert, DG. Eskin, K. Fezzaa, J. Mi, Multiscale interactions of liquid, bubbles and solid phases in ultrasonic fields revealed by ultiphysics modelling and ultrafast X-ray imaging, Ultrasonics Sonochemistry Vol. 89, Sep 2022, 106158, doi: 10.1016/j.ultsonch.2022.106158  

[3] L. Qin, BM. Maciejewska, T. Subroto, JA. Morton, K. Porfyrakis, I. Tzanakis, DG. Eskin c, N. Grobert, K. Fezzaa, J. Mi, Ultrafast synchrotron X-ray imaging and multiphysics modelling of liquid phase fatigue exfoliation of graphite under ultrasound, Carbon Vol. 186, Jan 2022, Pages 227-237, doi: 10.1016/j.carbon.2021.10.014 

[4] JA. Morton, M. Khavari, L. Qin, BM. Maciejewska, AV. Tyurnina, N. Grobert, DG. Eskin, J. Mi, K. Porfyrakis, P. Prentice, I. Tzanakis, New insights into sono-exfoliation mechanisms of graphite: In situ high-speed imaging studies and acoustic measurements, Materials Today, Vol. 49, Oct 2021, Pages 10-22, doi: 10.1016/j.mattod.2021.05.005