Biomedical Engineering Reference
In-Depth Information
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Figure 10.16
SERS Spectra using CV (10-4) as a molecule. (1) CV (2) CV+Au (3)
CV+SiO2@Au (4) CV+ SiO2@Au + 0.1 ppm Cd2+ (5) CV+ SiO2@Au + 1 ppm Cd2+ (6)
CV+ SiO2@Au + 2 ppm Cd2+(7) CV+ SiO2@Au + 5 ppm Cd2+ (8) CV+ SiO2@Au + 10
ppm Cd2+.
10.9 Conclusions
In this chapter an overview of nanomaterials along with metal nanopar-
ticles and metallic core-shell nanocomposites was presented. Basic prop-
erties of nanomaterials, which make them behave dif erently from their
bulk counterparts, were addressed. Various synthesis approaches required
for their fabrication along with their properties and applications have also
been discussed. Metallic core-shell forms an independent class among the
novel nanomaterials. h ey were synthesized using metal nanoparticles as
precursors using bi-functional molecules or by simple co-precipitation
method. h e optical properties of these particles are dependent on the ratio
of core-to-shell thickness. Due to tunable optical properties of synthesized
nanomaterials they have been used as sensors. h is chapter concludes with
recent investigations on the issue of nanotoxicity and its implications for
the future.
Acknowledgement
We are thankful to Prof. Aditya Shastri, Vice Chancellor of Banasthali
Vidyapith, for kindly extending the facilities of the Banasthali Centre for
Education and Research in Basic Sciences sanctioned under the CURIE
programme of the Department of Science and Technology, New Delhi.
