Sphere: Qsca vs diameter

Importing the package dependencies: numpy, PyMieSim

import numpy as np

from PyMieSim.experiment.scatterer import Sphere
from PyMieSim.experiment.source import Gaussian
from PyMieSim.experiment import Setup
from PyOptik import UsualMaterial
from PyMieSim import measure

Defining the source to be employed.

source = Gaussian(
    wavelength=400e-9,
    polarization_value=0,
    polarization_type='linear',
    optical_power=1e-3,
    NA=0.2
)

Defining the ranging parameters for the scatterer distribution

scatterer = Sphere(
    diameter=np.linspace(1e-09, 800e-9, 300),
    material=[UsualMaterial.Silver, UsualMaterial.Gold, UsualMaterial.Aluminium],
    medium_index=1,
    source=source
)

Defining the experiment setup

experiment = Setup(
    scatterer=scatterer,
    source=source
)

Measuring the properties

data = experiment.get(measure.Qabs)

Plotting the results

figure = data.plot(
    x=experiment.diameter,
    y_scale="log"
)

_ = figure.show()