Output example: Field distribution inside layered Si\Ag\Si sphere and Poynting vector distribution in Ag sphere with poweflow lines calculated with Scattnlay (scripts field-SiAgSi-flow.py and field-Ag-flow.py from example section as revision ).

How to use scattnlay

Table of contents:

Compile code
Use
Papers
Acknowledgment
License

Compile Code:

To compile the source you will need C++11 capable compiler. To use MultiPrecision feature you need to install Boost.Multiprecision library (at least 1.58 ver).

Compilation options

make source - Create source package for Python extension
make cython - Convert Cython code to C++
make python_ext - Create Python extension using C++ code
make cython_ext - Create Python extension using Cython code
make install - Install Python extension on local system
make buildrpm - Generate a rpm package for Python extension
make builddeb - Generate a deb package for Python extension
make standalone - Create standalone programs (scattnlay and fieldnlay)
make clean - Delete temporal files

Use:

Python library
- Use scattnlay directly

from scattnlay import scattnlay, fieldnlay
...
x = ...
m = ...
coords = ...
terms, Qext, Qsca, Qabs, Qbk, Qpr, g, Albedo, S1, S2 = scattnlay(x, m)
terms, E, H = fieldnlay(x, m, coords)
...

Execute some of the test scripts (located in the folder 'tests/python') Example:

./test01.py

Standalone program
- Execute scattnlay directly:

scattnlay -l Layers x1 m1.r m1.i [x2 m2.r m2.i ...] [-t ti tf nt] [-c comment]

Execute fieldnlay directly:

fieldnlay -l Layers x1 m1.r m1.i [x2 m2.r m2.i ...] -p xi xf nx yi yf ny zi zf nz [-c comment]

Execute some of the test scripts (located in the folder 'tests/shell'):

./test01.sh > test01.csv

C++ library

    try {
      MultiLayerMie multi_layer_mie;
      multi_layer_mie.SetLayersSize(x);
      multi_layer_mie.SetLayersIndex(m);

      multi_layer_mie.RunMieCalculation();

      *Qsca = multi_layer_mie.GetQsca();
      *Qabs = multi_layer_mie.GetQabs();
    } catch(const std::invalid_argument& ia) {
      // Will catch if  multi_layer_mie fails or other errors.
      std::cerr << "Invalid argument: " << ia.what() << std::endl;
      throw std::invalid_argument(ia);
      return -1;
    }

Papers

"Scattering of electromagnetic radiation by a multilayered sphere" O. Pena and U. Pal, Computer Physics Communications, vol. 180, Nov. 2009, pp. 2348-2354. http://dx.doi.org/10.1016/j.cpc.2009.07.010
"Reduction of scattering using thin all-dielectric shells designed by stochastic optimizer" Konstantin Ladutenko, Ovidio Peña-Rodríguez, Irina Melchakova, Ilya Yagupov, and Pavel Belov J. Appl. Phys., vol. 116, pp. 184508, 2014 http://dx.doi.org/10.1063/1.4900529
"Superabsorption of light by nanoparticles" Konstantin Ladutenko, Pavel Belov, Ovidio Peña-Rodríguez, Ali Mirzaei, Andrey E. Miroshnichenko and Ilya V. Shadrivov Nanoscale, 2015,7, 18897-18901 http://dx.doi.org/10.1039/C5NR05468K

Acknowledgment

We expect that all publications describing work using this software, or all commercial products using it, cite the following reference:

O. Pena and U. Pal, "Scattering of electromagnetic radiation by a multilayered sphere," Computer Physics Communications, vol. 180, Nov. 2009, pp. 2348-2354.

License

GPL v3+

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