I've been trying to find out how to set up the z-axis k-path when calculating 2D PnCs for z mode, haunting me for months. I'd appreciate that if anyone could help me out. Thank you all.
To do this, you must first set up the geometry of the 2D phononic crystal in COMSOL. Then, you must set up the appropriate boundary conditions and material parameters. Once this is done, you must define a frequency-domain acoustic study and set the frequency range you wish to investigate. You can then use the eigenfrequency solver to obtain the band structure of the out-of-plane mode.
Gabor Kurdi Thank you for your detalied instruction. I know band structure of in-plane mode can be calculated by not ticking the box of out-of-plane mode extension under the 2D approximation setting in solid mechanics section (you can see the attached picture). However, when it comes to out-of-plane mode for phononic crystals, unlike photonic crystal simultation where in-plane or out-of-plane mode can be separatly calculated simply by ticking the corresponding option, it requires me to fill in wave number Kz if I tick the box of out-of-plane, which I don't know what should be filled in. Plus, I assume that ticking the box does not mean it only calculates the out-of-plane mode, so I'm so confused about how to calculate the band strucuture of out-of-plane mode. Thank you for your support again. Could you please walk me through the procedures to obtain the band strucuture of out-of-plane mode by using Comsol ? I'm looking forward to your response.
Dear Cheng Xiong, I am facing the same issue. I am writing to you to know if you have resolved the issue and if you know how to solve such a case. Do you have anything to help me with for out-of-plane mode calculations?
Thank you, and I look forward to hearing from you.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Waves