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Innovation application: Raman Spectroscopy Measurements

Title Raman Spectroscopy Measurements
Abstract

The Raman spectroscopy theory is based on molecular vibration causing a change in polarizability of molecules. We offer detection of Raman spectrum in micro sized areas of sample. Raman spectrum help do identify specific chemical bounds in material, and if the Raman spectrum is known this method can be used identify specific materials/substances. This method is non-destructive.

Keywords Raman spectrum, chemical composition, Raman spectroscopy
Authors Māris Knite
Astrīda Bērziņa
Pāvels Onufrijevs
Artis Linarts
Department (14500) Tehniskās fizikas institūts
Statistical Classification of Economic Activities, NACE 2 Architectural and engineering activities; technical testing and analysis
Scientific research and development
Other professional, scientific and technical activities
Description of the technology

We offer Raman spectroscopy measurements with a red (633 nm) and infrared laser (785 nm). The Raman spectroscopy method is based on inelastic scattering of monochromatic light source due to chemical bounds in sample. This inelastic scattered light then is analyzed with the detector. Raman spectrum then can be used to identify specific chemical bounds and even chemical composition of the sample. This method can be used to supplement Infrared Spectroscopy which is based on dipole moment change due to excitation with a light source. However Raman spectroscopy is based on polarization change due to excitation with a light source.

Fig. 1. Renishaw Raman Spectroscopy.

Applications Raman spectroscopy can be used to identify specific chemical bounds and even chemical composition of the substance.
Advantages

This method is non-destructive and can be used to analyze chemical composition of the material as well as it can be done in areas smaller than few microns of samples area.

Technology Readiness Level Actual system proven in operational environment
Partnership offer • Service contracts.
ID 98
Contact information Linda Šufriča, e-mail: inovacijas@rtu.lv; phone.: 28442736