Question

( Optics Software)  Design a phantom , Using Mie Scattering Calculator

Design a phantom with the characteristics below:
Spherical TiO2 particles with the average diameter of 1 micron. Refractive index of TiO2 is 2.4 (Imaginary Index of Refraction is zero). The particles will be mixed with epoxy and resin with the refractive index of 1.5.
Reduced scattering coefficient(@700 nm): 40 cm-1
Anisotropy factor (@700 nm): 0.9

Answer 1

In my understanding it is not possible to make desired phantom with anisotropy factor = 0.9

Given details :

Diameter = 1 micron.

RI particle = 2.4

RI medium = 1.5

Wavelength = 0.7 micron (700nm)

By inputing these values into Mie calculator we get,

Anisotropy parameter g = 0.479

By varying concentration, reduced scattering coefficient value can be changed.

But the anisotropy parameter value cannot be changed.

Hence with this it seems impossible to create the desired phantom.

If distribution of particles is provided, better estimate can be found.

Reference : https://omlc.org/calc/mie_calc.html