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

pV-Diagrams01:18

pV-Diagrams

6.7K
The pV diagram, which is a graph of pressure versus volume of the gas under study, is helpful in describing certain aspects of the substance. When the substance behaves like an ideal gas, the ideal gas equation describes the relationship between its pressure and volume. On a pV diagram, it is common to plot an isotherm, which is a curve showing p as a function of V with the number of molecules and the temperature fixed. Then, for an ideal gas, the product of the pressure of the gas and its...
6.7K
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

683
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
683
Phase Diagram01:19

Phase Diagram

7.3K
The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
7.3K
Phase Diagram01:24

Phase Diagram

165
A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. It shows the boundaries between solid, liquid, and gas phases and the conditions at which these phases coexist in equilibrium. An area in a phase diagram represents a single phase, whereas lines or phase boundaries represent the equilibrium between two phases.In the phase diagram of water, the boundary line between the solid and liquid states illustrates...
165
Phase Diagrams02:39

Phase Diagrams

52.3K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
52.3K
Entropy Changes Accompanying Specific Processes01:21

Entropy Changes Accompanying Specific Processes

135
Entropy, a measure of disorder in a system, changes during phase transitions like freezing or boiling. At the transition temperature Ttrs, where two phases are in equilibrium, the phase transition is a reversible process. The entropy change can be calculated from a substance's enthalpy of transition using the equation ΔStrs = ΔtrsH /Ttrs.When a perfect gas expands isothermally from one volume to another, entropy increases logarithmically with volume. Conversely, isothermal compression...
135

You might also read

Related Articles

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

Sort by
Same author

Micro-Raman Scattering Analysis of Temperature-Dependent Electron Mobility and Fermi Level in n-Doped Homoepitaxial GaN Layers for Power Electronics.

ACS applied materials & interfaces·2026
Same author

Wafer-scale detachable monocrystalline germanium nanomembranes for the growth of III-V materials and substrate reuse.

Nanoscale advances·2023
Same author

Effect of Nanographene Coating on the Seebeck Coefficient of Mesoporous Silicon.

Nanomaterials (Basel, Switzerland)·2023
Same author

Probing the coupling between the components in a graphene-mesoporous germanium nanocomposite using high-pressure Raman spectroscopy.

Nanoscale advances·2022
Same author

Extreme structural stability of Ti<sub>0.5</sub>Sn<sub>0.5</sub>O<sub>2</sub> nanoparticles: synergistic effect in the cationic sublattice.

Nanoscale·2022
Same author

Vitreous Carbon, Geometry and Topology: A Hollistic Approach.

Nanomaterials (Basel, Switzerland)·2021

Related Experiment Video

Updated: Apr 20, 2026

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

11.8K

Size-dependent pressure-induced amorphization: a thermodynamic panorama.

Denis Machon1, Patrice Mélinon

  • 1Institut Lumière Matière, UMR 5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France. denis.machon@univ-lyon1.fr.

Physical Chemistry Chemical Physics : PCCP
|November 20, 2014
PubMed
Summary

Nanomaterials exhibit a greater tendency for amorphization under pressure. This study explores thermodynamic interpretations, revealing size-dependent pressure-induced amorphization in nanoparticles.

More Related Videos

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
10:36

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

Published on: May 20, 2018

10.2K
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

12.1K

Related Experiment Videos

Last Updated: Apr 20, 2026

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

11.8K
Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
10:36

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

Published on: May 20, 2018

10.2K
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

12.1K

Area of Science:

  • Materials Science
  • Thermodynamics
  • Nanotechnology

Background:

  • Pressurized compounds like TiO2, Y2O3, and PbTe can transform to an amorphous state below a critical particle size.
  • This phenomenon highlights the increased propensity of nanomaterials for amorphization compared to bulk materials.

Purpose of the Study:

  • To provide a thermodynamic interpretation of pressure-induced amorphization in nanoparticles.
  • To explain the size-dependent nature of this transformation and its dependence on material properties.

Main Methods:

  • Descriptive analysis using the energy landscape concept.
  • Formal thermodynamic approach based on Gibbs energy.
  • Elaborated model incorporating Ginzburg-Landau theory and percolation theory.

Main Results:

  • Amorphization occurs at lower pressures than polymorphic transitions in nanoparticles.
  • The crossover between polymorphic transition and amorphization is sensitive to defect density and interfacial energy.
  • Nanostructuration plays a key role in pressure-induced amorphization.

Conclusions:

  • The synthesis process significantly influences the amorphization behavior of nanoparticles.
  • High-pressure behavior serves as a quality control indicator for synthesized nanoparticles.
  • Thermodynamic and kinetic factors govern the transition to an amorphous state in nanomaterials.