Journal of Physics & Astronomy

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Commentary: Three-Dimensional Hybrid Silicon Nanostructures for Surface Enhanced Raman Spectroscopy based Molecular Detection


Affiliations
1 School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India
2 Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, Telangana, India
3 Inter-University Accelerator Centre, New Delhi 110067, India
 

In the quest for understanding and applying nanoscale processes, molecular detection has attained great interest due to its effectiveness in medicine, biology and pharmacology. Raman spectroscopy is one of the most reliable techniques for the identification and characterization of molecules, which has a limited capacity to detect molecules in diluted samples because of low signal yield. Surface-enhanced Raman spectroscopy (SERS) uses large electromagnetic fields produced locally by metal nanostructures to improve the Raman scattering and boost sensitivity of molecules at lower level concentrations, for example the Raman signal of standard dyes such as R6G can be enhanced by more than one billion-fold.
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  • Commentary: Three-Dimensional Hybrid Silicon Nanostructures for Surface Enhanced Raman Spectroscopy based Molecular Detection

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Authors

V. S. Vendamani
School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India
S. V. S. N. Rao
School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India
S. V. Rao
Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, Telangana, India
D. Kanjilal
Inter-University Accelerator Centre, New Delhi 110067, India
A. P. Pathak
School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India

Abstract


In the quest for understanding and applying nanoscale processes, molecular detection has attained great interest due to its effectiveness in medicine, biology and pharmacology. Raman spectroscopy is one of the most reliable techniques for the identification and characterization of molecules, which has a limited capacity to detect molecules in diluted samples because of low signal yield. Surface-enhanced Raman spectroscopy (SERS) uses large electromagnetic fields produced locally by metal nanostructures to improve the Raman scattering and boost sensitivity of molecules at lower level concentrations, for example the Raman signal of standard dyes such as R6G can be enhanced by more than one billion-fold.

References