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Research & Reviews: Journal of Material Sciences | ISSN: 2321-6212 | Volulme 6
November 07-08, 2018 | Atlanta, USA
Materials Science and Engineering
15
th
International Conference and Exhibition on
Applied Crystallography
3
rd
International Conference on
&
SERS stem cells bio-sensor based on Au/ SiO
2
colloidal crystals substrates
Juan Carlos Salcedo Reyes
Pontifical Xavierian University, Colombia
C
olloidal crystals (CC) are self-assembled metamaterials with a periodic refractive index fabricated from colloidal SiO
2
or polystyrene spheres. Lately, different structured porous films template by CCs are being used as substrates in Surface-
Enhanced Raman Spectroscopy (SERS). Taking into account that, due to the localized surface plasmon resonance phenomenon,
SERS substrates should satisfice conditions of nanoscale structure (porosity), periodicity and chemical stability, in this work,
we use a thin film (50 nm) of gold sublimated on a 250 nm SiO
2
based CC in order to detect changes of cellular biochemistry
of stem cells by SERS.
Biography
Juan Carlos Salcedo Reyes has completed his PhD at Cinvestav, México D.F., postdoctoral research at University of Texas at Dallas and Instituto de Ciencia de
Materiales, Madrid, Spain. More than 30 scientific papers, 1 Colombian patent and 1 US patent. Editor in chief, Universitas Scientiarum (Scientific journal of the
faculty of sciences, Universidad Javeriana, Bogotá D.C., Colombia)
salcedo.juan@javeriana.edu.coJuan Carlos Salcedo Reyes, Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C8-035