Text Only Queen's U. Directory Contact: Queen's  |  Physics
 queensu.ca   physics.queensu.ca    


Home

............................................

  General Information

............................................
 
Contact Us

.....................................
 
Maps and Directions

.....................................
 
Colloquia and Talks

.....................................
 
Department News

.....................................
 
Employment

.....................................
 
Facilities

.....................................
 
IT Support

.....................................
 
About Queen's

.....................................
 
About Kingston

.....................................

Undergrad Studies

............................................

Graduate Studies

............................................

Research Groups

............................................

Faculty & Staff

............................................

Alumni & Friends

............................................

Visitors & Residents

............................................

Queen's Observatory

............................................

 
 Upcoming Talks        Past Talks        Calendar View

Departmental Colloquium


Ab initio study of calcium phosphate biomaterials

Prof. Malcolm Stott
Queen's University

Time
 
Wed. October 3, 2007     3:30 PM     Stirling A

Abstract
 
The hard mineral component of animal bone is a calcium phosphate similar in composition to the naturally occurring hydroxyapatite (HA), but it is calcium deficient and contains a variety of impurities, principally about 5 wt % carbonate. Si is another trace element in bone which is known to be crucial for skeleton development. A number of synthetic bone replacement materials based on calcium phosphates have been developed to repair bone damage and coat joint replacements. The ideal is material that takes part fully in the body's natural bone remodelling process and is eventually replaced by natural bone. The most promising are Si-doped HA or tricalcium phosphates. Ab initio methods have been used to investigate on an atomic scale the basic calcium phosphate materials, the nature of the chemical complexes that incorporate the Si or carbonate dopants and the surfaces of these materials where the biological processes must take place. I will briefly review calcium phosphates and their biological significance and then describe the modelling that has proved to be a useful complement to experiment.

List of upcoming talks and colloquia

Calendar for the current month



  Back to top
©2013 Department of Physics, Engineering Physics & Astronomy
Queen's University
Kingston, Ontario
K7L 3N6 Canada
Web Inquiries
webmaster@physics.queensu.ca
Departmental Inquiries
dept@physics.queensu.ca