University of California

Subhash H Risbud

Zuhair A Munir

Amiya K Mukherjee

Guodong Zhan

A Hari Reddi

Nancy E Rashid

Wei Nong Lai

Benjamin J McCoy

Hydroxyapatite is treated by a combination of nitridation and the application of bone morphogenetic protein or DNA encoding such a protein to improve the tissue compatibility and affinity of the hydroxyapatite, rendering the hydroxyapatite more useful as a material for biomedical implants.

Method to improve hydroxyapatite implantation and stimulate bone regeneration

Optical windows for protecting infrared sensing instruments are manufactured from nano-sized crystallites by compressing the crystallites into a continuous mass under high pressure in the presence of a pulsed electric current, preferably one produced by spark plasma sintering. The resulting materials have excellent optical and mechanical properties that make them favorable as replacements for the conventional single-crystal sapphire.

Polycrystalline optical window materials from nanoceramics

A method through which we can synthesize Functionally Graded Materials (FGM). Such materials are made so that their composition changes gradually from one point to another, such as in the example of gradient index (GRIN) optical components. A novel aspect of our method is the imposition of a centrifugal force during the combustion synthesis of composite materials for structural, optical, or electronic applications, with the result that the composition and the particle size of the metallic (or ceramic) component changes continuously and across the thickness of the product. We have prepared such FGM as ZrO.sub.2 +Ni, ZrO.sub.2 +Cu and Al.sub.2 O.sub.3 +Cu.

Centrifugal synthesis and processing of functionally graded materials

Growing community of inventors

Davis, CA, United States of America

Subhash H Risbud