modeling aid

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Hello, I need your help with a model. I want to model a polystyrene nanoparticle (d=20 nm) in water on Comsol.

  1. What are the vibration effects?
  2. The medium should be water.
  3. The excitation type is opto-thermal/light excitation.
  4. Particle point/average displacement vs. time.
  5. Maximum RMS displacement vs. time.
  6. Q-factor / damping extraction.
  7. Pressure field p(x,t) in fluid.
  8. Fourier transform (FFT) of pressure/potential time series → spectrum.
  9. Mode shape snapshots (in time or from modal analysis).
  10. Acoustic energy flow / power.
  11. Phase vs. time or vs. frequency
  12. Parameter scans (sensitivity plots)
  13. Spatial cross-sections / field maps (p(x,t) or u(x,t))
  14. If optothermal: Temperature(t) at particle & fluid + thermoelastic stress.

How do I model these and visualize the vibration and time-dependent relationships in graphs? Thank you very much for your help...


0 Replies Last Post Dec 22, 2025, 10:50 a.m. EST
COMSOL Moderator

Hello Barış Çelik

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