Sarjana Yadav

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Questions related from Sarjana Yadav

Why SERS scattering cross-section is greater than Raman scattering cross section?

Which factors really lead to a significant difference in 2 cross section values?

10 October 2023 4,926 2 View

Can we change vibrational mode of a molecule or make it Raman inactive to Raman active or vice versa by focussing IR laser light on it?

Since vibrational modes of a molecule also lie in IR region, can focussing IR light on a molecule change its vibrational modes?

26 July 2020 8,170 5 View

Why rough metallic surfaces essential for SERS?

Why roughness of metals is an essential need for SERS?

03 January 2020 5,956 3 View

Why water is a weak Raman Scatterer?

Though water has 3 raman active vibrations ( Symm. stretch, asymm. stretch and bend) yet it is quite weak raman scatterer and never interfares with Raman signals of other constituents..why??

02 January 2020 5,285 2 View

What is the significance of using different excitation wavelengths in Raman spectroscpoy? Does raman shift depend on the excitation wavelength?

Can we draw jablonski diagram for different laser excitations for the same molecule? Is there some proper analytical and qualitative wxplanation for using different excitation sources like 325nm,...

02 January 2020 7,462 7 View