The Advantages of Polymer Composites with
Detonation Nanodiamond Particles for Medical Applications
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(a) (b)
Fig. 9. Low loss BSE imaging from DND particles, embeded inside the Si-DND/PPHMDS
layer (a); Low loss BSE imaging of the Si-DND/PPHMDS surface (b).
(a) (b)
Fig. 10. Low loss BSE imaging of the cross section of Ag-DND/PPHMDS (a) view in side (b).
The Ag-DND/PPHMDS image grown on Si is presented in Fig. 10-a, -b. Two parts of the
layer are distinguished: the low part is dense with a thickness of about 125 nm, while the
upper part is with significant concentration of Ag ions, with low density (about 0.4 g/cm^3 )
and a thickness of about 300 nm.
3.3.2 AFM of PPHMDS and DNDs/PPHMDS composites
The 3-D images and the roughness histogram (RH) of PPHMDS and Ag-DND/PPHMDS
layers are shown in the Fig. 11-13. It is seen that Ag-DND/PPHMDS surface is rougher than
the surface of PPHMDS and 6-DND/PPHMDS (see also Table 2 in section 3.3.3.). When
treated for 5 min by NH 3 plasma, the RMS roughness extremely decreased up to 2.02 nm
(Fig.13-b). This result is in agreement with the calculated density for the upper Ag-
DND/PPHMDS/NH 3 layer from the SEM investigation.