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Prompts FDTD Nanoparticle Absorption Scattering Simulator

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FDTD Nanoparticle Absorption Scattering Simulator

Act as a simulation expert creating FDTD simulations for gold nanospheres (diameters 20-100 nm) to compute absorption/scattering cross-sections, electric field enhancements, analyz…

PROMPT 

Act as a simulation expert. You are tasked with creating FDTD simulations to analyze nanoparticles.

Task 1: Gold Nanoparticles
- Simulate absorption and scattering cross-sections for gold nanospheres with diameters from 20 to 100 nm in 20 nm increments.
- Use the visible wavelength region, with the injection axis as x.
- Set the total frequency points to 51, adjustable for smoother plots.
- Choose an appropriate mesh size for accuracy.
- Determine wavelengths of maximum electric field enhancement for each nanoparticle.
- Analyze how diameter changes affect the appearance of gold nanoparticle solutions.
- Rank 20, 40, and 80 nm nanoparticles by dipole-like optical response and light scattering.

Task 2: Dielectric Nanoparticles
- Simulate absorption and scattering cross-sections for three dielectric shapes: a sphere (radius 50 nm), a cube (100 nm side), and a cylinder (radius 50 nm, height 100 nm).
- Use refractive index of 4.0, with no imaginary part, and a wavelength range from 0.4 µm to 1.0 µm.
- Injection axis is z, with 51 frequency points, adjustable mesh sizes for accuracy.
- Analyze absorption cross-sections and comment on shape effects on scattering cross-sections.

ROLES & RULES

Role assignments

  • Act as a simulation expert.

EXPECTED OUTPUT

Format
structured_report

SUCCESS CRITERIA

  • Simulate absorption and scattering cross-sections for gold nanospheres with diameters 20-100 nm.
  • Determine wavelengths of maximum electric field enhancement for each nanoparticle.
  • Analyze diameter effects on gold nanoparticle solution appearance.
  • Rank 20, 40, and 80 nm nanoparticles by dipole-like response and scattering.
  • Simulate absorption and scattering for dielectric sphere, cube, and cylinder.
  • Analyze shape effects on dielectric scattering cross-sections.

FAILURE MODES

  • May provide theoretical descriptions instead of actual FDTD simulations.
  • Might select inappropriate mesh sizes leading to inaccurate results.
  • Could overlook adjustments to frequency points for smoother plots.
  • Risk of incomplete analysis across multiple diameters or shapes.

CAVEATS

Dependencies
  • FDTD simulation software or environment.
Missing context
  • FDTD simulation software (e.g., Lumerical, MEEP).
  • Gold material model (e.g., Johnson-Christy refractive index data).
  • Simulation domain size and boundary conditions (e.g., PML).
  • Output format (e.g., tables of cross-sections, plot descriptions, numerical values).
  • Polarization of injection field.
Ambiguities
  • Unspecified FDTD software or framework.
  • Location and method for measuring maximum electric field enhancement.
  • Definition of 'dipole-like optical response' for ranking.
  • Criteria for choosing 'appropriate mesh size'.
  • What 'appearance of gold nanoparticle solutions' refers to (color, plasmon resonance?).

QUALITY

OVERALL
0.70
CLARITY
0.85
SPECIFICITY
0.75
REUSABILITY
0.20
COMPLETENESS
0.65

IMPROVEMENT SUGGESTIONS

  • Specify the FDTD software, e.g., 'Use Lumerical FDTD Solutions.'
  • Add material details: 'Use Johnson-Christy data for gold.'
  • Define metrics: 'Dipole-like response based on quadrupole/dipole ratio in near-field.'
  • Use templates: 'Simulate diameters {diameters_list} nm.'
  • Clarify outputs: 'Output cross-section tables vs wavelength and analyze peaks.'

USAGE

Copy the prompt above and paste it into your AI of choice — Claude, ChatGPT, Gemini, or anywhere else you're working. Replace any placeholder sections with your own context, then ask for the output.

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