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

UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

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 process,...
Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
Emission Spectra02:39

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

You might also read

Related Articles

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

Sort by
Same author

An operating system for executing applications on quantum network nodes.

Nature·2025
Same author

A model eye for fluorescent characterization of retinal cultures and tissues.

Scientific reports·2023
Same author

Size and environment: The effect of phonon localization on micro-Brillouin imaging.

Biomaterials advances·2023
Same author

Brillouin-Raman microspectroscopy for the morpho-mechanical imaging of human lamellar bone.

Journal of the Royal Society, Interface·2022
Same author

Peculiar behavior of the ester carbonyl vibrational modes in anisotropic aliphatic and semi-aromatic polyesters.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2021
Same author

Optical computation of a spin glass dynamics with tunable complexity.

Proceedings of the National Academy of Sciences of the United States of America·2021

Related Experiment Video

Updated: Jul 13, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
10:04

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

Origin of the lambda transition in liquid sulfur.

T Scopigno1, S N Yannopoulos, F Scarponi

  • 1Research center SOFT-INFM-CNR, Università di Roma La Sapienza, I-00185, Roma, Italy. tullio.scopigno@roma1.infn.it

Physical Review Letters
|August 7, 2007
PubMed
Summary

Researchers used infrared photon correlation spectroscopy to study liquid sulfur near its lambda transition. They revealed a millisecond chain relaxation process, validating the Maxwell relation and explaining sulfur's viscoelastic behavior.

More Related Videos

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
08:37

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Published on: December 10, 2015

Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol
10:41

Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol

Published on: December 20, 2016

Related Experiment Videos

Last Updated: Jul 13, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
10:04

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
08:37

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Published on: December 10, 2015

Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol
10:41

Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol

Published on: December 20, 2016

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Physical Chemistry

Background:

  • Liquid sulfur exhibits complex behavior near its lambda transition (Tλ).
  • Abrupt viscosity changes (4 orders of magnitude) occur within a narrow temperature range.
  • Previous studies faced challenges with photoinduced and absorption effects at visible wavelengths.

Purpose of the Study:

  • To investigate the viscoelastic properties of liquid sulfur around Tλ.
  • To overcome limitations of visible light spectroscopy in liquid sulfur.
  • To validate the applicability of the Maxwell relation in this system.

Main Methods:

  • Development of a novel experimental technique using photon correlation spectroscopy.
  • Application of infrared radiation to probe liquid sulfur.
  • Measurements conducted around the lambda transition temperature (Tλ).

Main Results:

  • Successfully overcame photoinduced and absorption effects common with visible light.
  • Revealed a distinct chain relaxation process.
  • Characterized this process with a relaxation time in the millisecond range.

Conclusions:

  • The Maxwell relation is valid for liquid sulfur, resolving apparent discrepancies.
  • The observed chain relaxation explains the mechanical and thermodynamic behavior.
  • The findings support a comprehensive viscoelastic model for liquid sulfur.