How to make a slice in the Particles System? I am a student looking at microstructures. Therefore I am using the Particle System to create a lot of droplets.
To mimic a microscopic image I want to make a slice of the system.
I can do this by using the shortcut Alt+B. (see image) 
But by using this shortcut, rendering isn't possible.
Does anyone know how to make a slice of a Particle System?  The Boolean Modifier, Knife tool or Bisect don't work for the Particle System...

Thanks!
Jantine

By using nodes, I get black artefacts:


Suggestions for a solution? I guess these black shapes are remaining of part of the balls that overlay each other, which is also something to solve...

Thanks!

Is it possible to fill these spheres? So that the inside is solid green?


Thanks!
You can slice them at render time (i.e. the full geometry will still be there, but only the relevant slices will be rendered) by using Material nodes:

Say you want to render only the portion 0.5 &lt; Z &lt; 0.9. Then, as your sphere's material, use a Mix shader:



The Mix Shader should be used to mix your material (whatever that is, e.g. a green Diffuse) and a fully white "Transparent BDSF". 

The mixing "Factor" is either 0 or 1, controlled by a set of "Math" nodes that check whether the "Z" coordinate is in the desired range.

Result:



Note (after your edit): if there are many particles, the "Transmission" value under "Bounces" in the "Light Path" Render settings should be at least twice the number of particles that can be found along a lightpath from your point of view. ← If this doesn't make much sense to you, just increase that value until it looks right.