Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Thermodynamic Potentials

Thermodynamic Potentials

Thermodynamic potentials are state functions that are extremely useful in analyzing a thermodynamic system. They have dimensions of energy. The four important thermodynamic potentials are internal energy, enthalpy, Helmholtz free energy, and Gibbs free energy. These thermodynamic potentials can be expressed using two of the following variables: pressure, volume, temperature, and entropy. These two variables are expressed as the rate of change of the thermodynamic potential with respect to other...

Energy Diagrams - I

Energy Diagrams - I

The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...

Statically Indeterminate Problem Solving

Statically Indeterminate Problem Solving

Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...

Stability of Equilibrium Configuration: Problem Solving

Stability of Equilibrium Configuration: Problem Solving

The stability of equilibrium configurations is an important concept in physics, engineering, and other related fields. In simple terms, it refers to the tendency of an object or system to return to its equilibrium position after being disturbed. The stability of an equilibrium configuration can be analyzed by considering the potential energy function of the system and examining its behavior near the equilibrium point.
Problem-solving in the context of the stability of equilibrium configuration...

Temperature Dependent Deformation

Temperature Dependent Deformation

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 together...

Energy Diagrams - II

Energy Diagrams - II

Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The slope...

You might also read

Related Articles

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

Sort by

Same author

Molecular dynamics study of water anomalies: a comparison of OPC3 and TIP4P/ <math><mi>ε</mi></math> models.

Journal of molecular modeling·2026

Same author

Empirical no-go principles for rigid three-point water models: A physically guided manifold of optimality.

The Journal of chemical physics·2026

Same author

Condensation Effect and Transport on Alumina Porous Membranes.

Langmuir : the ACS journal of surfaces and colloids·2025

Same author

Water in nanoporous hexagonal boron nitride nanosheets: a first-principles study.

Beilstein journal of nanotechnology·2025

Same author

Accuracy of TIP4P/2005 and SPC/Fw Water Models.

The journal of physical chemistry. B·2024

Same author

Flow through Deformed Carbon Nanotubes Predicted by Rigid and Flexible Water Models.

The journal of physical chemistry. B·2023

Search research articles

Related Experiment Video

Updated: Jun 20, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Thermodynamic, dynamic, and structural anomalies for shoulderlike potentials.

Ney M Barraz¹, Evy Salcedo, Marcia C Barbosa

¹Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501-970, Porto Alegre, RS, Brazil. neybarraz@gmail.com

The Journal of Chemical Physics

|September 11, 2009

Summary

Continuous core-softened potentials with two length scales can exhibit anomalies. Repulsive shoulders promote anomalies, while deep wells at short distances diminish them, aiding in the design of anomalous materials.

More Related Videos

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Rat Model of Adhesive Capsulitis of the Shoulder

Rat Model of Adhesive Capsulitis of the Shoulder

Published on: September 28, 2018

Related Experiment Videos

Last Updated: Jun 20, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Rat Model of Adhesive Capsulitis of the Shoulder

Rat Model of Adhesive Capsulitis of the Shoulder

Published on: September 28, 2018

Area of Science:

Physical Chemistry
Computational Materials Science
Statistical Mechanics

Background:

Continuous core-softened potentials are crucial for modeling materials with anomalous properties.
Understanding the role of length scales in these potentials is key to predicting material behavior.

Purpose of the Study:

To investigate how two distinct length scales within core-softened potentials influence thermodynamic and structural anomalies.
To determine the conditions under which density, diffusion, and structural anomalies emerge or disappear.

Main Methods:

Molecular dynamic simulations were employed to study a family of continuous core-softened potentials.
The simulations focused on potentials with a hard core, a shoulder, and an attractive well, varying the nature of the shoulder and well.

Main Results:

Potentials with a repulsive shoulder or a shallow well at the first length scale exhibit regions of anomalous behavior in the pressure-temperature phase diagram.
Deep wells at the closest distance significantly reduce or eliminate the regions exhibiting density, diffusion, and structural anomalies.

Conclusions:

The presence and extent of anomalies in core-softened potentials are highly sensitive to the nature of the interaction at the shortest length scale.
This study provides insights for designing two-length-scale potentials that exhibit specific anomalous behaviors for targeted applications.