Patent ID: 9744141
Date: 2017-08-29
CPC Classifications: A61K,B01J,B22D,B29C,B82B,C04B,Y10S,Y10T

Claim:
1. A method of fabricating a particle, comprising: combining a core particle with one or more masking particles to form a template, wherein the one or more masking particles bind to the core particle and cover one or more regions of the surface of the core particle, each of the one or more regions corresponding to a surface area formed between each of the one or more masking particles and the core particle; forming, on a portion of the surface of the core particle, excluding the covered one or more regions, a layer of a porous material over the template; and removing the template to produce a particle formed of the porous material, the particle having one or more holes extending between an interior region that is hollow and an external surface of the particle, the one or more holes having a size on the external surface substantially that of the surface area and distributed on the particle at the one or more regions; further comprising functionalizing the surface of the core particle and an outer surface of the one or more masking particles, wherein the functionalizing produces a positive charge on the surface of the core particle and a negative charge on the outer surface of the one or more masking particles.