Raman: The technology that uses light and vibration to measure

Using Raman spectroscopy, light is measured to provide detailed, valuable and even life-saving insights into a material’s property. MarqMetrix is innovating this non-invasive form of measurement to help industries work more efficiently by harnessing powerful data.

Diverse industry application


Raman is used across industries to:

Discern chemical make-ups and molecular vibrations of substances

Provide real-time information about body tissues

Measure and examine materials without damaging them during the sample-taking

How it works

 

This vibrational spectroscopic technique uses a laser light source to illuminate a sample and provide valuable findings. Raman technology is used in areas including healthcare and pharmaceuticals, food and beverage, oil and gas, and biotech.


Advantages to Raman spectroscopy

 

Compared to infrared spectroscopy, Raman spectroscopy assesses molecular motion and gains molecular fingerprint data without preparing a sample.

It can be used with solid, liquid, or gas materials, and delivers quick, real-time results in just seconds, where other types of spectroscopy might require more elaborate measuring techniques.

  • Non-destructive measurement
    Raman’s non-destructive measurement method allows a sample to be measured multiple times without effect.
  • Qualitative and quantitative 
    Raman spectroscopy works for varying applications, whether precise measurements are necessary or the material quality needs to be identified.
  • Chemical structure differentiation
    Raman spectroscopy detects small changes in material structure and identifies different chemical structures in a wide variety of substances.

 

Uses of Raman spectroscopy

The potential of Raman spectroscopy is far reaching. Its non-damaging nature makes it useful for situations where microscopic and chemical analysis are required.

  • Track molecule structure changes in materials (including carbon)
  • Ensure accurate compound distribution in medicine
  • Track crystallinity changes
  • Identify substances, including minerals and gemstones
  • Identify polymorphs
  • Evaluate pressure or stress on a structure
  • Assess the direction of orientation of molecules
  • Analyze single-cells and diagnose disease

Frequently asked questions about Raman Spectroscopy

What is spectroscopy?

Spectroscopy is a scientific measurement technique that studies the interaction between light and matter.

What is Raman spectroscopy?

Raman spectroscopy relies on Raman scattering, or inelastic scattering, of monochromatic light to identify molecular components. Raman scattering occurs when there are changes in electronic, vibrational or rotational energy. This wavelength change in light is also referred to as Raman effect.

What is a spectrometer?

A spectrometer is a measuring device for light waves, collecting them to determine the energy-emitting material.

How does a spectrometer work?

A spectrometer splits light into colors, called a spectrum. The light is collected through a fiber optic cable, which allows the breakdown of light into spectral components. Those components are then composed into digital, readable measurements.

What is Raman shift?

Raman shift is the data that shows the wavelength of the scattered radiation to provide structural and chemical data. Raman shift measurements indicate changes in energy levels depending on the molecule’s vibrational state.