Abstract
Hollow polymer, inorganic and inorganic‐organic composite capsules of submicrometer to micrometer size have been fabricated by using a variety of colloidal particles as templates for the build‐up of nanostructured multilayers and subsequently removing the core by chemical or thermal pathways. The figure shows a TEM image of a cross‐section of hollow inorganic capsules. The geometry, size, wall thickness and composition of the hollow capsules can be readily controlled.

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