I have been trying to encapsulate wax inside a metal shell nanoparticle (300nm) by the heteroflocculation method. But I am not able to see clear images of nanoparticle via the HR-SEM .The method of heteroflocculation involves the electrostatic attraction between the wax particle and the small metal nanoparticles, coming together to form a shell on wax particles. The problem here I think is that, instead of forming shell nanoparticles, they are forming nano-metal and wax composites due to electrostatic attraction. I am not sure what to do? Please suggest a method or way to resolve this. I have also attached an image with this.