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

1.2K
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...
1.2K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

882
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...
882
Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

781
Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature...
781
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR01:15

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

1.6K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.6K
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

1.6K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.6K
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

2.5K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
2.5K

You might also read

Related Articles

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

Sort by
Same author

Banded karyotypes of 20 Papionini species reveal no necessary correlation with speciation.

American journal of primatology·2020
Same author

Short-term, supra-physiological rhGH administration induces transient DNA damage in peripheral lymphocytes of healthy women.

Journal of endocrinological investigation·2017
Same author

A wearable, highly stable, strain and bending sensor based on high aspect ratio graphite nanobelts.

Nanotechnology·2016
Same author

Atypical Exciton-Phonon Interactions in WS2 and WSe2 Monolayers Revealed by Resonance Raman Spectroscopy.

Nano letters·2016
Same author

A new designed π conjugated molecule for stable single walled carbon nanotube dispersion in aqueous medium.

Journal of colloid and interface science·2015
Same author

Highly sensitive and simple SERS substrate based on photochemically generated carbon nanotubes-gold nanorods hybrids.

Journal of colloid and interface science·2015

Related Experiment Video

Updated: Dec 20, 2025

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

15.4K

Raman spectra of multilayer graphene under high temperatures.

A V Alaferdov1,2, R Savu1, C Fantini3

  • 1Center for Semiconductor Components and Nanotechnologies, University of Campinas, Campinas, SP, 13083-870, Brazil.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 23, 2020
PubMed
Summary

Raman spectroscopy reveals distinct temperature responses in multilayer graphene

Keywords:
Raman spectrumgraphenegraphitehigh temperaturethermal coefficient

More Related Videos

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

15.6K
Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
14:52

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

9.3K

Related Experiment Videos

Last Updated: Dec 20, 2025

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

15.4K
Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

15.6K
Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
14:52

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

9.3K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Spectroscopy

Background:

  • Raman spectroscopy is crucial for temperature measurements in graphitic materials via phonon frequency analysis.
  • Experimentally determined G-mode thermal coefficients (ΔG/ΔT) in graphene exhibit significant variability and differ across layers.
  • Existing studies often focus on low temperatures and lack detailed analysis of multilayered structures.

Purpose of the Study:

  • To investigate the G-band behavior in suspended multilayer graphene flakes under localized laser heating.
  • To analyze the complex structure of the G-band and its temperature-dependent variations.
  • To determine distinct thermal coefficients for different graphitic layer groups within the flakes.

Main Methods:

  • Localized laser heating of freely suspended multilayer graphene flakes.
  • Analysis of both Stokes and anti-Stokes Raman scattering signals.
  • Deconvolution of the G-band into multiple peaks to study individual layer responses.
  • Temperature estimation using the anti-Stokes/Stokes intensity ratio (IaS/IS).

Main Results:

  • The G-band in multilayer graphene exhibits complex behavior with multiple peaks showing differential responses to heating.
  • Distinct thermal coefficients were determined for surface, near-surface, and bulk graphitic layers.
  • The observed behavior is attributed to reduced interlayer interactions at higher temperatures, affecting outer layers.
  • Temperature estimations from G-band downshift (TΔG) and anti-Stokes/Stokes ratio (TaS/S) showed good agreement (TΔG≈TaS/S).
  • Temperatures ranging from 450 to 1200 K were accurately measured using both methods.

Conclusions:

  • The G-band's complex structure in multilayer graphene allows for nuanced temperature profiling.
  • Differential thermal coefficients for distinct layer groups provide a more accurate understanding of heating effects in few-layer graphene.
  • The anti-Stokes/Stokes intensity ratio serves as a reliable method for temperature determination, corroborating G-band downshift analysis.
  • This study offers a refined approach to temperature measurements in nanostructured graphitic materials.