Complications Of Genian Spectroscopy By Sir Vandrasekhara Venkata Raman
In 1928, Raman spectroscopy was introduced by Sir Chandrasekhara Venkata Raman an Indian Physicist, together with K. S. Krishnan. For this tremendous contribution in Physics, Sir C. V. Raman got Nobel prize in 1930.
Write something about Raman signal, where does it come from? What are the implications of Raman? Raman is the inelastic scattering of light. The meaning of inelastic scattering is observable from the figure below. When an electron is excited by photons of applied light, it jumps from ground state to higher sates. While scattering, there are various possible things that might happen. To explain Raman, I have mentioned three of them here. From the figure delineated below, we can see an elastic scattering of light namely, Rayleigh …show more content…
For instance, the substrate is needed to be remodeled and prepared again from the scratch every time while performing SERS for a particular molecule which is time-consuming and cost ineffective. The major reason behind changing the substrate every time is, the ultimate result differs from sample to sample and the preparation of substrate has a major impact on the result [1]. Moreover, It is not fruitful for a single molecule as it is difficult to detect the real signal by this technique in real space [5, 9-11]. Along with that, the samples prepared in SERS are likely to tarnish in the air easily which is a drawback again and results in an ambiguous result from our targeted molecule. That means Raman signal that is extracted can’t be distinguished whether it has come from the intrinsic sample or from the contaminated one [5-7]. Another major limitation of SERS is, it is not possible to detect the corresponding conformation of molecular vibrational state but it is important. For instance, to understand the molecule, to have Nanomachine, to improve the performance of biological molecules, to produce molecular memory or logic devices etc., the analysis of vibrational states works as a very important
Write something about Raman signal, where does it come from? What are the implications of Raman? Raman is the inelastic scattering of light. The meaning of inelastic scattering is observable from the figure below. When an electron is excited by photons of applied light, it jumps from ground state to higher sates. While scattering, there are various possible things that might happen. To explain Raman, I have mentioned three of them here. From the figure delineated below, we can see an elastic scattering of light namely, Rayleigh …show more content…
For instance, the substrate is needed to be remodeled and prepared again from the scratch every time while performing SERS for a particular molecule which is time-consuming and cost ineffective. The major reason behind changing the substrate every time is, the ultimate result differs from sample to sample and the preparation of substrate has a major impact on the result [1]. Moreover, It is not fruitful for a single molecule as it is difficult to detect the real signal by this technique in real space [5, 9-11]. Along with that, the samples prepared in SERS are likely to tarnish in the air easily which is a drawback again and results in an ambiguous result from our targeted molecule. That means Raman signal that is extracted can’t be distinguished whether it has come from the intrinsic sample or from the contaminated one [5-7]. Another major limitation of SERS is, it is not possible to detect the corresponding conformation of molecular vibrational state but it is important. For instance, to understand the molecule, to have Nanomachine, to improve the performance of biological molecules, to produce molecular memory or logic devices etc., the analysis of vibrational states works as a very important