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Pablo Villanueva Perez

Senior lecturer

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Ultrasonic cavitation shock wave exfoliation dynamics of 2D materials revealed in situ by MHz XFEL imaging and multiphysics modeling

Author

  • Kang Xiang
  • Ling Qin
  • Shi Huang
  • Hongyuan Song
  • Vasilii Bazhenov
  • Valerio Bellucci
  • Sarlota Birnšteinová
  • Raphael de Wijn
  • Jayanath C.P. Koliyadu
  • Faisal H.M. Koua
  • Adam Round
  • Ekaterina Round
  • Abhisakh Sarma
  • Tokushi Sato
  • Marcin Sikorski
  • Yuhe Zhang
  • Eleni Myrto Asimakopoulou
  • Pablo Villanueva-Perez
  • Kyriakos Porfyrakis
  • Iakovos Tzanakis
  • Dmitry G. Eskin
  • Nicole Grobert
  • Adrian P. Mancuso
  • Richard Bean
  • Patrik Vagovič
  • Jiawei Mi
Show all

Summary, in English

Using megahertz x-ray free electron laser imaging with x-ray pulses of ~25 femtoseconds and a machine-learning strategy, we have conducted comprehensive in situ imaging studies on the dynamics of cavitation bubble clouds in ultrasound fields at the SPB/SFX beamline of the European XFEL. The research unambiguously revealed the quasi-simultaneous implosion of multiple bubbles and simultaneous collapse of bubble cloud in nanosecond scale and their dynamic impacts onto two-dimensional (2D) materials for layer exfoliation. We have also performed multiphysics modeling to simulate the shock wave emission, propagation, impact, and stresses produced. We elucidated the critical conditions for producing instant or fatigue exfoliation and the effects of bonding strengths and structural defects on the exfoliation rate. The discoveries have filled the long-standing missing knowledge gaps in the underlying physics of exfoliating 2D materials in ultrasound fields, providing a solid theoretical foundation for optimizing and scaling-up operation to produce 2D materials in a much more cost-effective and sustainable way.

Department/s

  • Synchrotron Radiation Research
  • NanoLund: Centre for Nanoscience
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • LU Profile Area: Light and Materials
  • LTH Profile Area: Photon Science and Technology
  • eSSENCE: The e-Science Collaboration

Publishing year

2025-11-28

Language

English

Pages

1-10

Publication/Series

Science Advances

Volume

11

Issue

48

Document type

Journal article

Publisher

American Association for the Advancement of Science (AAAS)

Topic

  • Materials Chemistry
  • Atom and Molecular Physics and Optics
  • Other Physics Topics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2375-2548