Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

1.9K
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...
1.9K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.4K
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...
1.4K
The Soil Ecosystem02:23

The Soil Ecosystem

25.0K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
25.0K
Microbial Morphologies01:29

Microbial Morphologies

4.2K
Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
4.2K
Directing Effect of Substituents: meta-Directing Groups01:09

Directing Effect of Substituents: meta-Directing Groups

6.1K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
6.1K
Directing Effect of Substituents: ortho–para-Directing Groups01:14

Directing Effect of Substituents: ortho–para-Directing Groups

8.7K
Ortho–para directors are substituent groups attached to the benzene ring and direct the addition of an electrophile to the positions ortho or para to the substituent. All electron-donating groups are considered ortho–para directors. They donate electrons to the ring and make the ring more electron-rich. The ring is therefore susceptible to the addition of electrophiles. Substituents such as amino, hydroxy, or alkoxy, containing lone pairs on the atom adjacent to the ring, donate...
8.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evaluation of the Raman Spectra of LEGO Blocks and Fluorescence Avoidance Using Pulsed Laser Excitation and Time-Resolved Detection.

Applied spectroscopy·2025
Same author

Using LEGO Blocks for the Evaluation of Fluorescence Avoidance and Mitigation in Handheld Raman Spectrometers.

Applied spectroscopy·2025
Same author

Forensic Analytical Chemistry for Minimizing Injustice: Advances and Challenges.

Annual review of analytical chemistry (Palo Alto, Calif.)·2025
Same author

LEGO Blocks as "Standard" Samples for Evaluation of Fluorescence Avoidance and Mitigation in Raman Spectroscopy.

Applied spectroscopy·2024
Same author

Evaluation of portable gas chromatography-mass spectrometry (GC-MS) for the analysis of fentanyl, fentanyl analogs, and other synthetic opioids.

Journal of forensic sciences·2023
Same author

The influence of biological sex on latent fingermark aging as examined by the color contrast technique.

Journal of forensic sciences·2022

Related Experiment Video

Updated: Feb 15, 2026

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
13:48

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy

Published on: May 29, 2012

17.6K

Morphologically-directed Raman spectroscopy for forensic soil analysis.

Brooke W Kammrath1, Andrew Koutrakos2, Josemar Castillo3

  • 1Department of Forensic Science, Henry C. Lee College of Criminal Justice and Forensic Sciences, University of New Haven, 300 Boston Post Rd., West Haven, CT 06516, United States.

Forensic Science International
|January 17, 2018
PubMed
Summary

Morphologically-directed Raman spectroscopy (MDRS) offers enhanced forensic soil analysis by revealing particle characteristics and mineral composition. This technique provides deeper insights than traditional methods, aiding in criminal investigations.

Keywords:
Morphologically-directed Raman spectroscopyRaman spectroscopySoil analysis

More Related Videos

Fabricating a UV-Vis and Raman Spectroscopy Immunoassay Platform
09:02

Fabricating a UV-Vis and Raman Spectroscopy Immunoassay Platform

Published on: November 10, 2016

10.8K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.6K

Related Experiment Videos

Last Updated: Feb 15, 2026

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
13:48

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy

Published on: May 29, 2012

17.6K
Fabricating a UV-Vis and Raman Spectroscopy Immunoassay Platform
09:02

Fabricating a UV-Vis and Raman Spectroscopy Immunoassay Platform

Published on: November 10, 2016

10.8K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.6K

Area of Science:

  • Forensic Science
  • Analytical Chemistry
  • Geology

Background:

  • Traditional forensic methods offer limited information on soil samples.
  • Morphologically-directed Raman spectroscopy (MDRS) is an emerging analytical technique.
  • Soil analysis is crucial in forensic investigations.

Purpose of the Study:

  • To explore the benefits of using soil in forensic investigations.
  • To demonstrate the value of applying MDRS in soil forensics.
  • To highlight the capabilities of MDRS for detailed sample analysis.

Main Methods:

  • Utilizing Morphologically-directed Raman spectroscopy (MDRS).
  • Analyzing soil samples for particle size distribution and morphology.
  • Performing secure mineral identification using MDRS.

Main Results:

  • MDRS provides particle size distribution and microscopic morphological characteristics.
  • MDRS enables secure mineral identification within soil samples.
  • Case studies illustrate the practical application and potential of MDRS.

Conclusions:

  • MDRS is a valuable tool for forensic soil analysis.
  • The technique offers more comprehensive data compared to traditional methods.
  • MDRS enhances the information obtainable from forensic soil samples.