B Viswanath and N Ravishankar 2007 Nanotechnology 18 475604 doi:10.1088/0957-4484/18/47/475604
B Viswanath and N Ravishankar
Show affiliationsScaffolds based on calcium phosphates are ideally suited for bone tissue engineering applications. Here, we report a novel method to prepare biphasic calcium phosphate blocks and porous coatings via a morphology transition of anisotropic nanostructured hydroxyapatite. Size-controlled hydroxyapatite nanowhiskers have been synthesized by a hydrothermal method. Heating an assembly of these nanowhiskers leads to the formation of porous biphasic structures in a single step. Structural and microstructural characterization has been carried out using XRD, SEM and TEM. A BET surface area analyzer has been used to determine the surface area resulting from the porous structure. The formation mechanism of these structures is discussed. The present method also opens up possibilities to synthesize nanoporous structures of other functional inorganic materials.
Issue 47 (28 November 2007)
Received 26 July 2007, in final form 28 September 2007
Published 26 October 2007
B Viswanath and N Ravishankar 2007 Nanotechnology 18 475604
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