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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

297
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...
297
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

315
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...
315

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Updated: Jun 9, 2025

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Development of a 3D Printing-Enabled Cost-Effective Multimodal Raman Probe with High Signal-to-noise Ratio Raman

Ezekiel Edward Nettey-Oppong1, Ahmed Ali2, Jiwon Ahn1

  • 1Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea.

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This study presents an affordable, 3D-printed Raman spectroscopy system for material analysis. The cost-effective instrument achieves high accuracy in identifying substances like ethanol, enhancing accessibility for research and education.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Materials Science

Background:

  • Raman spectroscopy offers valuable, non-destructive material insights.
  • High costs of commercial Raman instruments limit accessibility for academic and research settings.

Purpose of the Study:

  • To develop an affordable, accessible, and versatile Raman instrument.
  • To enable both spectroscopic and microscopic analyses using a single, cost-effective system.

Main Methods:

  • Construction of a modular Raman probe system using 3D printing technology.
  • Integration of hardware design and signal processing for high signal-to-noise ratio.
  • Multimodal data acquisition for concurrent Raman signal and image analysis.

Main Results:

  • Successful color-based alcohol detection demonstrated.
  • Accurate identification of unique Raman spectra for water, ethanol, and methanol.
  • High accuracy (R²=0.9993) in determining ethanol concentration in mixed samples.

Conclusions:

  • The developed 3D-printed Raman probe is a cost-effective, reliable, and accurate alternative to commercial systems.
  • This accessible technology can expand the use of Raman spectroscopy in resource-limited environments.
  • The modular design allows for adaptability to various research requirements.