Ceramic Thin-Film Formation on Functionalized Interfaces Through Biomimetic Processing

Abstract

Processing routes have been developed for the production of thin ceramic films through precipitation from aqueous solutions. The techniques are based on crystal nucleation and growth onto functionalized interfaces. Surface functionalization routes have been developed by the mimicking of schemes used by organisms to produce complex ceramic composites such as teeth, bones, and shells. High-quality, dense polycrystalline films of oxides, hydroxides, and sulfides have now been prepared from "biomimetic" synthesis techniques. Ceramic films can be synthesized on plastics and other materials at temperatures below 100 degrees C. As a low-temperature process in which water rather than organic solvents is used, this synthesis is environmentally benign. Nanocrystalline ceramics can be produced, sometimes with preferred crystallite orientation. The direct deposition of high-resolution patterned films has also been demonstrated. The process is well suited to the production of organic-inorganic composites.

Ultrastructural analyses of nanoscale apatite biomimetically grown on organic template

“…[1][2][3][4][5][6][7] Currently, this method is used to coat permanent implants [1][2][3][4] with the aim of improving biological compatibility and osteoconductivity, as well as degradable scaffolds that support skeletal tissue repair and regeneration. [5][6][7][8] Because direct bonding between an implant and bone can occur if a layer of bone-like mineral forms on the surface of the implant, 9 it has been hypothesized that the formation of such a mineral layer within the pores of a scaffold may enhance the conduction of host cells into the scaffold and also enhance the osteogenic differentiation of transplanted cells.…”

Studies of Wear and Tear and Hydrogen Bonding in Dendrimeric Fluorinated Polysilsequioxanes Coatings on an Aluminum Surface

“…Studies conducted by Bunker et al 52 have demonstrated the thermodynamic preference of formation of a top dense layer, which creates a tough barrier for the incoming water molecules.…”

Advances in Biomimetic Apatite Coating on Metal Implants

“…The SIM process includes modification of a surface to introduce surface functionalization followed by immersion in aqueous supersaturated calcium phosphate solutions. In short, this technique is based on crystal nucleation and growth onto functionalized interfaces (Bunker et al, 1994;Campbell et al, 1996). Various functional groups have been introduced onto the surface of Ti and its alloys to functionalize the surface capable of nucleating apatite.…”