MieScat_Py

📌 Description

Python codes for calculating the scattering and absorption of plane-electromegnetic waves by a isotropic homogeneous sphere, aka the Lorenz-Mie theory.

List of codes

• miescat.py computes the optical efficiency factors (Qsca, Qext, Qabs, and Qback), the scattering amplitudes (S11 and S22), and the optical cross sections per unit mass (MSC, MEC, and MAC).
• miescat_charged.py an extended version of miescat.py for an electrically charged sphere.
• mie_complex_amplitudes.py computes the scattering amplitudes observable by the Complex Amplitude Sensing (CAS-v1 and CAS-v2)
• call_mie_scattering.ipynb demonstrates how to use these Mie scattering codes.
• make_mie_S_table.ipynb compute the S-table in parquet (pandas df) format for spherical particles.

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🚀 Installation

The author developed and tested current version (v0.1.1) using Python 3.12.8 in Windows 11 machines.

1. Clone the repository

git clone https://github.com/NobuhiroMoteki/MieScat_Py.git
cd MieScat_Py

2. Install dependencies

pip install -r requirements.txt

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🔧 Usage

Please see the comments in each codes.

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📝 License

This project is licensed under the MIT License. See the LICENSE file for details.

📖 References

• Mie theory and its computational methods

  • Bohren, C. F., & Huffman, D. R. (2008). Absorption and scattering of light by small particles. John Wiley & Sons.
  • Mishchenko, M. I., Travis, L. D., & Lacis, A. A. (2002). Scattering, absorption, and emission of light by small particles. Cambridge university press.

• Scattering theory for charged sphere and its computational methods

  • Klacka, J., & Kocifaj, M. (2010). On the scattering of electromagnetic waves by a charged sphere. Progress In Electromagnetics Research, 109, 17-35.

• Complex Amplitude Sensing (CAS)

  • Moteki, N. (2021). Measuring the complex forward-scattering amplitude of single particles by self-reference interferometry: CAS-v1 protocol. Optics Express, 29(13), 20688-20714.
  • Moteki, N., & Adachi, K. (2024). Measuring the polarized complex forward-scattering amplitudes of single particles in unbounded fluid flow: CAS-v2 protocol. Optics Express, 32(21), 36500-36522.

📢 Author

Name: Nobuhiro Moteki GitHub: @NobuhiroMoteki Email: nobuhiro.moteki@gmail.com