Extending The Research Spectra: CV Raman Spectrometer

Extending The Research Spectra: CV Raman Spectrometer

Ayan Dutta Tanya Gupta | Aug 27, 2018

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When it comes to cutting-edge research facilities, NITR hasn’t left any stone unturned. With the procurement of Raman Spectrometer situated in the Department of Physics and Astronomy, the institute is all set to take a massive leap in the aspect of research practices on material science, nutritional sustainability and many more topics of inevitable importance.

Installation of the Equipment and Working Principles
Amounting to a whopping sum of 1.76 crore INR, the instrument was installed on 6th July 2018 following which there was a seminar day regarding the working, usage and data collection and analyzation using the device conducted by the Physics and Astronomy Department on 7th July 2018.  It witnessed a footfall of over forty students across all the Departments along with the faculty members of the  Physics Department. The laboratory in which the spectrometer is placed was inaugurated by Dr. Santrupt B.Misra, Chairperson Board Of Governors, NIT Rourkela on 9th August 2018. Prof. Pitambar Mahanandia from Physics and Astronomy who completed his Ph.D. from IISC Bangalore is the Professor In Charge (PIC) of this newly sought instrument of NITR.
The instrument uses the phenomena of CV Raman effect which is the inelastic scattering of a photon by molecules that are excited to higher vibrational or rotational energy levels along with Photoluminescence(PL) effect for identification of molecules. It also comes in handy while observing vibrational, rotational and other low-frequency modes in a system. The Raman spectrometer at NITR is also associated with an Uninterruptable Power Supply which can provide the instrument backup for at least 2 hours in case of a dearth in power supply from the primary source for the highly sophisticated machine can suffer severe damage in the case of a power failure. For the PL effect, the instrument has three laser systems incorporated in it. The wavelengths of three lasers are 355 nm (amounting to a sum of 35 lakhs INR) and 532 nm, 633 nm lasers (amounting to a sum of 25-30 lakhs).

What Makes The Apparatus Unique?
The newly ordained Raman Spectrometer instrument is the only one in the eastern region with three lasers, and it is capable of handling multiple projects. As the device is based on Raman’s principle of scattering of light and the system is not a closed one, maintenance of the instrument is of utmost importance. Dust particles can cloud the objective lens and lead to spectra observation becoming blurred even with the machine functioning correctly, so care is being taken to maintain a dust-free environment.

The FT Raman Fluorescence instrument in the Inorganic and Physical Chemistry Department at the Indian Institute of Science, Bangalore was previously used by the research scholars at NIT Rourkela for their projects. But it wasn’t a very feasible situation since the instrument had to be booked way in advance, the student or the faculty had to travel all the way to Bangalore, and the results obtained were usually not up to the mark. It is an equipment highly required for material scientists despite the discipline. The installation of the instrument at the institute will thus hold the banner up in terms of research. With higher funding, it can later be updated to Atomic Force Microscope as well.


 The three laser systems that have been implemented in the spectrometer will help us study the material characteristics of diversified semiconductors. One such project in which the instrument can be perfectly applicable in future is the detection of suspicious chemicals. Thus in a way, this instrument not only has its application in the field of Physics and Material Science but also in the subjects on Chemistry, Nutritional balance and many more where molecule identification is a necessity. Therefore the maximum application of this state-of-art instrument for projects undertaken by our Department as well as other Departments across NITR shall be our goal in the upcoming years.

Said Prof. Pitambar Mahanandia, Professor In Charge of the CV Raman Spectrometer Instrument.  
Team MM wishes the Department of Physics and Astronomy all the luck and prosperity in their future endeavors.  
 

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