Biomedical Engineering Reference
In-Depth Information
Figure 10.14
Enhanced alkaline phosphatase activity on nanophase
carbon iber compacts after 4, 14, and 21 days. Substrates:
borosilicate glass (reference substrate), 100 nm
diameter with a pyrolytic outer core, conventional
200 nm diameter with a pyrolytic outer core, 60 nm
diameter without a pyrolytic outer core, and conventional
125 nm diameter without a pyrolytic outer core [15].
Figure 10.15
Enhanced deposition of calcium on nanophase carbon
iber compacts after 7, 14, and 21 days. Substrates:
borosilicate glass (reference substrate), 100 nm
diameter with a pyrolytic outer core, conventional 200
nm diameter with a pyrolytic outer core, 60 nm diameter
without a pyrolytic outer core, and conventional 125 nm
diameter without a pyrolytic outer core [15].
Ishida
et al
. developed nanoibrillar forms of carbon using
native cellulose rapid freeze drying of suspension and solvent
exchange drying processes [24]. The pyrolysis in gaseous HCl acts
on cellulose without wetting. For example, the cellulose materials
