LRS Images

External users: registration to be carried out only through I-STEM portal
Additional information about sample and analysis details should be filled in the pdf form provided in the I-STEM portal under “DOWNLOAD CSRF”

Internal users (IITB): registration to be carried out only through DRONA portal
Additional information about sample and analysis details should be filled in the pdf form provided here.

Make
Thermo Fisher Scientific
Model
DXR3xi
Facility Status
Working
Date of Installation
Facility Management Division
Centre for Sophisticated Instruments and Facilities (CSIF)-IoE Funded

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Category

  • Spectroscopy and Spectrometry » Raman Spectrometer

Booking Details

Booking available for
Internal and External Both

Facility Management Team and Location

Facility In Charge
Prof. Sakthi S. Chinnasamy
chinnasamys@iitb.ac.in
Co-convenors
Prof. George Mathew
gmathew@iitb.ac.in
Facility Operator
Dr. Shilpa Netrawali
Facility Management Members
Prof. S.S. Chinnasamy
Prof. G. Mathew
Prof. Prabhakar Naraga
Head, Department of Earth Sciences
Prof. K.G. Suresh
Department
Earth Science
Lab Email ID
shilpan@iitb.ac.in
Facility Location
Laser Raman Lab, Room No 108, First Floor, Department of Earth Sciences, IIT-Bombay, Powai, Mumbai, 400076
Lab Phone No
022-2576 4289

Facility Features, Working Principle and Specifications

Facility Description

Facility Description

Laser Raman Confocal Imaging Spectroscope is based on scattering of light and gives information on chemical and structural characteristics of the sample with minimal or no sample preparation.

Features Working Principle

When a sample is irradiated with an intense monochromatic light source (usually a laser), most of the radiation is scattered by the sample at the same wavelength as that of the incoming laser radiation in a process known as Rayleigh scattering. However, a small proportion of the incoming light – approximately one photon out of a million – is scattered at a wavelength that is shifted from the original laser wavelength. This shift is called the Raman shift. The difference in energy between the incident laser excitation and the Raman scattered light is equal to a vibrational transition energy of the molecule. By analyzing the inelastically scattered Raman light one can build up a Raman spectrum. The Raman spectrum is plotted as a Raman shift relative to the excitation wavelength.
 

Body Specification

Lasers: 532 nm and 780 nm, 
Spectral range: 50- 3200cm-1
Spectral Resolution: 5 cm-1, 
Confocal depth resolution is down to 2 microns.
 

Sample Preparation, User Instructions and Precautionary Measures

Instruction for Sample Preparation
  • The sample’s height should be smaller than 2 cm when placed on the motorized sample stage.
  • The sample’s upper surface should be relatively smooth and flat to minimize the chance of ramming objective into sample.
  • Geological Samples should be polished accordingly.
  • Kindly mark the sample area to be observed.
  • Base of the sample should be flat.

Charges for Analytical Services in Different Categories

Usage Charges
 Categories and Charges (in Rs.) (charges per hour) 
Type of testing/ experimentIndustryNational LabsUniversities
(External)
Internal UsersDepartment Users
 Raman Analysis 20001200800200200
Imaging/ Mapping500030002000500500

(Charges excluding of 18% GST)
 

Applications

Earth sciences, pharmaceutical, polymer, battery, energy, semiconductor, microplastics, and many other materials science applications

Sample Details

Chemical allowed

User should be aware of the properties of the sample.

Allowed Substrate

Sample form: Powder/Pellet/ On glass substrate/Film.
Liquid samples should be submitted in vials.

Gases allowed

No

Substrate Dimension

The bulk sample should be less than 8 mm x 8 mm and base of the sample should be flat for mounting on sample holder.

SOP, Lab Policies and Other Details

Publications