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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Infrared (IR) Spectroscopy: Overview01:09

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
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Multimodal fiber probe for simultaneous mid-infrared and Raman spectroscopy.

Alexander Novikov1,2, Stanislav Perevoschikov3,4, Iskander Usenov3,5

  • 1Art Photonics GmbH, Rudower Chaussee 46, 12489, Berlin, Germany. an@artphotonics.de.

Scientific Reports
|March 29, 2024
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Summary
This summary is machine-generated.

A novel fiber probe allows simultaneous mid-infrared (MIR) and Raman spectral acquisition. This multimodal measurement technique enhances chemical analysis by combining two powerful spectroscopic methods in one device.

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Area of Science:

  • Spectroscopy
  • Materials Science
  • Analytical Chemistry

Background:

  • Mid-infrared (MIR) and Raman spectroscopy are crucial for chemical analysis.
  • Simultaneous acquisition of MIR and Raman spectra can provide complementary information.
  • Existing methods often require separate probes or complex setups.

Purpose of the Study:

  • To develop a fiber probe for simultaneous mid-infrared (MIR) and Raman spectral acquisition.
  • To demonstrate a novel design integrating both spectroscopic techniques into a single probe.
  • To highlight the advantages of multimodal spectroscopic measurements.

Main Methods:

  • A fiber probe with a zirconium dioxide (ZrO2) crystal tip was designed for attenuated total reflection (ATR) measurements.
  • Mid-infrared ATR spectra were acquired using chalcogenide infrared (CIR) fibers.
  • Raman spectra were obtained using silica fibers positioned perpendicular to the CIR fibers.

Main Results:

  • The developed fiber probe successfully enabled simultaneous acquisition of MIR and Raman spectra in the 3100-2600 cm⁻¹ region.
  • The probe design integrates MIR ATR and Raman spectroscopy efficiently.
  • The multimodal approach offers synergistic benefits for sample analysis.

Conclusions:

  • The developed fiber probe provides a powerful tool for simultaneous MIR and Raman spectroscopy.
  • This multimodal approach simplifies spectral acquisition and enhances analytical capabilities.
  • The probe is suitable for various applications requiring detailed chemical information.