Absorption of light by spherical nanoparticle

[Excom]

Hello

Can anyone tell me how the absorption of a polystyrene nanoparticles scales as a function of its diameter.

The particle is spherical and it is placed in vacuum.

A reference to a paper I can read would be nice.

At this point I only want to know how the absorption scales not how much the particles absorbs.

Thanks.

 

[Simon Bridge]

The specific absorption would be a constant for the material (proportion of light absorbed per unit area).
What is the context?

 

[Excom]

I have this experiment where I can measure the absorption of light by a single nanoparticle. I would then like to calculate the detection limited based on the noise of the measurement and the signal induced by the particle I can detect.