hello,

First of all this is very interesting question, i would like to ask are the  particles mono dispersed. If not then it is quite possible that there are random aggregation of smaller nano particles to form a large cluster like 900nm. if your SEM image shows equally distributed mono dispersed particles then this is something new, u can definitely define number of smaller spherical particles in a large sphere and work the simulation.

also scattering depends on the number of particles in your sphere so if the number of particles are strictly defined (mono dispersed )u can get desired results by simulation.

hello,

First of all this is very interesting question, i would like to ask are the  particles mono dispersed. If not then it is quite possible that there are random aggregation of smaller nano particles to form a large cluster like 900nm. if your SEM image shows equally distributed mono dispersed particles then this is something new, u can definitely define number of smaller spherical particles in a large sphere and work the simulation.

also scattering depends on the number of particles in your sphere so if the number of particles are strictly defined (mono dispersed )u can get desired results by simulation.

Dear Kaleem

It looks like nano composite materials. If you have alook the links address  hope you will find more paper around this subject.

Best regard 

Dr. Hamida Darwish

https://www.google.com.sa/search?site=&source=hp&q=nanocomposite+materials+synthesis+properties+and+applications&oq=Nanocomposite+materials&gs_l=hp.1.3.0i19l6j0i22i30i19l4.25451.35498.0.57638.25.15.0.10.10.0.223.2569.0j13j2.15.0....0...1c.1.64.hp..3.22.2068.0.aWMWWy5ZOBs

@Hamida thanks for your's apply i am not interested in synthesis i am asking about Near field scattering spectra