3D Design of self-assembled nanoporous colloids

Recently discovered synthesis of unusual curved nanoporous silica shapes, such as rods, discoids, spheres, tubes, and hollow helicoids, have brought forth the problem of understanding the formation mechanism. Knowledge of such mechanism may lead to the ability to control the nanoporous shapes. This is important in a variety of applications and new technologies where nanostructure and geometry determine function. In this work the problem of morphogenesis of nanoporous silica shapes is analyzed. A theoretical basis is outlined to describe the variety of forms and surface designs that result from the liquid crystal stage, silicification and rigidification of shapes. Further experimental evidence in favor of the suggested mechanisms is presented.