Absorbance Simulation of Gold Octahedra

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SUMMARY

The discussion focuses on simulating the absorption spectra of gold octahedra using the discrete dipole approximation (DDA) technique, which is essential due to the non-spherical nature of the particles. The tool DDSCAT is identified as a suitable software for implementing DDA simulations. Users are advised to familiarize themselves with Fortran programming, as it is commonly utilized in conjunction with DDSCAT for running simulations. The conversation highlights a gap in knowledge regarding programming, which is crucial for effectively using these tools.

PREREQUISITES
  • Discrete Dipole Approximation (DDA) technique
  • DDSCAT software for simulations
  • Fortran programming language
  • Understanding of absorption spectra
NEXT STEPS
  • Learn how to install and use DDSCAT for DDA simulations
  • Study Fortran programming basics to facilitate simulation tasks
  • Research the principles of absorption spectra relevant to nanostructures
  • Explore alternative simulation tools for non-spherical particles
USEFUL FOR

This discussion is beneficial for researchers in nanotechnology, materials science, and computational physics, particularly those interested in simulating optical properties of metallic nanostructures.

shinobi20
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I want to simulate the absorption spectra of gold octahedra when irradiated by a light source, according to the information I have gathered I can use discrete dipole approximation technique because octahedra is not spherical (in contrast to Mie Theory which is applicable to spherical particles). I also saw from some website that DDSCAT can run the discrete dipole approximation. I have no knowledge on programming or anything related to computers so I'm confused on what to do.

Fortran is always mentioned in those information and using some compilers, but I am lost.

DDSCAT https://code.google.com/p/ddscat/
 
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