March 10, 2021 at 10:41 amfbkSubscriber
I am trying to simulate a 1D metallic grating of Silver, over a double layers of silicon nitride and oxide, 11 nm and 5 nm, respectevely. The metallic nano grating is embedded in a PMMA passivation to avoid silver oxidation and the device is placed on 3um of Si. Schematic rapresentation of the strcuture in figure 1.March 17, 2021 at 12:44 amKyleAnsys EmployeenThe fields will vary rapidly near the surfaces or corners of metals, so very high mesh density is often required in these areas. I would recommend that you use convergence testing to see if the results (A, R and T) are changing as you reduce the mesh size. While these are high field values, they don't cover a large area so it's possible they won't drastically affect the results. You should also use an integer number of mesh cells over the metal object to ensure the mesh cells overlap with the metals.nAlternatively, you could use the DGTD solver for this simulation. It is well suited for plasmonic simulations like this. You might also consider replacing the metal rectangle with a rectangle with rounded corners. This should be more accurate, as the actual device won't have perfectly sharp corners.nPlease try that and let me know if it helps.nViewing 1 reply thread
Ansys Innovation Space
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.Trending discussions
- “Import optical generation” or “delta generation rate”?
- Why am I getting “process exited without calling finalize”, and how do I fix it?
- Error on Lumerical device
- Using a license file on a new license server
- Error: addfdtd is not a valid function or a variable name
- Ansys Insight: Diverging Simulations
- Ansys Insight: Transmission results greater than one
- Ansys Insight: About override mesh in FDTD: its use and settings
- Is there a Lumerical script command to output the Simulation and Memory requirements?
- Ansys Insight: Convergence issues in CHARGE
Top Rated Tags
© 2023 Copyright ANSYS, Inc. All rights reserved.Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.