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Related Experiment Video

Updated: Jun 11, 2026

Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications
09:56

Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications

Published on: December 8, 2015

Hierarchically structured titanium foams for tissue scaffold applications.

R Singh1, P D Lee, J R Jones

  • 1Department of Materials, Imperial College London, London SW7 2AZ, UK.

Acta Biomaterialia
|July 6, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel titanium foam with hierarchical porosity for biomedical implants. This advanced material allows for tailored pore sizes at multiple scales, enhancing its potential for bone regeneration and drug delivery applications.

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Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo

Published on: July 1, 2013

Area of Science:

  • Biomaterials Engineering
  • Materials Science
  • Biomedical Engineering

Background:

  • Biomedical implants require materials with specific mechanical properties and porosity.
  • Existing titanium foams often lack the ability to control porosity at multiple scales.
  • Hierarchical porosity is desirable for improved osseointegration and cellular infiltration.

Purpose of the Study:

  • To develop a novel method for producing hierarchically porous titanium foams.
  • To enable independent control over macro-pore and intra-strut porosity.
  • To explore the potential for incorporating bioactive materials within the foam structure.

Main Methods:

  • Fabrication of a porous oxide precursor using gel casting.
  • Electrochemical reduction of the precursor to yield metallic titanium foam.
  • Independent control of pore size via processing parameters like pressure, ceramic loading, and sintering temperature.

Main Results:

  • Successfully produced hierarchically porous titanium foams with tunable pore sizes.
  • Achieved typical properties for 80% porous Ti foam: modulus ~1 GPa, yield strength 8 MPa, permeability 350 Darcies.
  • Demonstrated infiltration of bioactive silica-polymer composite into intra-strut porosities.

Conclusions:

  • The novel fabrication route allows for precise control over multi-scale porosity in titanium foams.
  • The resulting titanium foams possess properties suitable for biomedical implant applications.
  • The hierarchical structure facilitates integration with bioactive materials for enhanced functionality.