Sign in Subscribe
Nanotechnology

Thermosolutal Marangoni Instability in Nanofluids: A Breakthrough Research

Strategic Insights

— 1 min read

A team of researchers from the Technion-Israel Institute of Technology has made a significant discovery in the field of nanotechnology by investigating the thermosolutal Marangoni instability in a moderately dense nanoparticle suspension, known as a nanofluid. The research, supported by the European Union, has revealed new insights into the behavior of nanofluids when subjected to constant heat flux and exposed to the ambient atmosphere at the air-liquid interface.

Key Takeaways:

  • The study focused on the thermosolutal Marangoni instability in a nanofluid layer deposited on a solid substrate and exposed to the ambient atmosphere at the air-liquid interface.
  • The researchers used asymptotic expansions to investigate the oscillatory long-wave thermosolutocapillary instabilities, considering the dependence of the thermophysical properties of the nanofluid on the local nanoparticle concentration.
  • The study found a transition from monotonic to oscillatory thermosolutal Marangoni instability with a codimension-two point bifurcation.
  • An excellent agreement was obtained between the results of the asymptotic analysis and those of the numerical solution of the full eigenvalue problem, in terms of the critical values of the Marangoni number, the wavenumber, and the frequency.
  • The research has been peer-reviewed and published in the journal Physics of Fluids.
  • Additional information on the research can be obtained by contacting Raj Gandhi, a researcher at the Technion-Israel Institute of Technology.
  • The study's findings have significant implications for the development of new nanofluid-based technologies.

Statistics:

  • The study was supported by the European Union (EU).
  • The research was conducted by a team of researchers from the Technion-Israel Institute of Technology, led by Raj Gandhi.
  • The study published its findings in the journal Physics of Fluids, with a corresponding authorship count of 4: Raj Gandhi, Alexander Nepomnyashchy, Alexander Oron, and 1 additional author.
  • The study's results were obtained through a combination of asymptotic expansions and numerical simulations.
  • The Marangoni number, wavenumber, and frequency were critical parameters in the study, with their critical values obtained through both asymptotic and numerical analysis.

Sources:

  • The Onset of Long-wave Oscillatory Thermosolutal Instability In a Heated Layer of a Moderately Dense Nanofluid, Physics of Fluids, 2025; 37(9).
  • VerticalNews, "Current study results on Nanotechnology - Nanofluids have been published", October 20, 2025.
  • Technion-Israel Institute of Technology, Department of Mathematics, Il-3200003 Haifa, Israel.
  • European Union (EU), support for the research.

Read more