Biomedical Engineering Reference
In-Depth Information
3.17
Optical absorption (a) and photoluminescence (b) spectra for the
Er
3+
activated SiC/SiO
2
nanocomposite doped with 1 mol% and
submitted to thermal treatment at 1200
C. The emission spectra were
obtained using a diode laser operating at 980 nm as a pump beam.
14
8
3.18 Fluorescence emission intensity of Eu-TDPA-doped Ag@SiO
2
and
Rh800-doped Ag@SiO
2
and the corresponding fluorescent nanobubbles
(control samples), Eu-TDPA-doped SiO
2
and Rh800-doped SiO
2
. The
diameter of the Ag is 130 ± 10 nm and the thickness of the shell is
11 ± 1 nm (optimized) for all the samples.
35
enhancement of the fluorescence signal and a potentially 200-fold increase in
particle detectability.
Conducting polypyrrole wide-bandgap semiconducting silica (SiO
2
)
nanocomposites were prepared by polymerizing pyrrole in the presence of
colloidal silicon oxide sol.
36
It was found that with an increase in silica
