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

Non-conservative Forces01:17

Non-conservative Forces

7.6K
Non-conservative forces are dissipative forces such as friction or air resistance. These forces take energy away from a system as it progresses. Unlike conservative forces, non-conservative forces do not have potential energy associated with them. This is because the energy is lost to the system and cannot be turned into useful work later.
Also unlike their conservative counterparts, they are path-dependent; where the object starts and stops does matter. For example, a grinding wheel applies a...
7.6K
Coulomb's Law01:30

Coulomb's Law

8.9K
Experiments with electric charges have shown that if two objects each have an electric charge, they exert an electric force on each other. The magnitude of the force is linearly proportional to the net charge on each object and inversely proportional to the square of the distance between them. The direction of the force vector is along the imaginary line joining the two objects and is dictated by the signs of the charges involved.
Newton's third law applies to the Coulomb force — the...
8.9K
Divergence and Curl of Magnetic Field01:26

Divergence and Curl of Magnetic Field

2.8K
The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
2.8K
Moment of a Force: Problem Solving01:29

Moment of a Force: Problem Solving

580
Understanding the scalar formulation of the moment of a force and applying it correctly through problem-solving is crucial in designing and analyzing mechanical systems. Here are the steps for problem-solving with the moment of a force:
580
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

358
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
358
Force and Potential Energy in One Dimension01:13

Force and Potential Energy in One Dimension

5.3K
Force can be calculated from the expression for potential energy, which is a function of position. The component of a conservative force, in a particular direction, equals the negative of the derivative of the corresponding potential energy with respect to the displacement in that direction. For regions where potential energy changes rapidly with displacement, the work done and force is maximum. Also, when force is applied along the positive coordinate axis, the potential energy decreases with...
5.3K

You might also read

Related Articles

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

Sort by
Same author

On Casimir and Helmholtz Fluctuation-Induced Forces in Micro- and Nano-Systems: Survey of Some Basic Results.

Entropy (Basel, Switzerland)·2024
Same author

Exact expressions for the partition function of the one-dimensional Ising model in the fixed-M ensemble.

Physical review. E·2022
Same author

Spanning tree model and the assembly kinetics of RNA viruses.

Physical review. E·2022
Same author

Endocytosis at extremes: Formation and internalization of giant clathrin-coated pits under elevated membrane tension.

Frontiers in molecular biosciences·2022
Same author

Packaging contests between viral RNA molecules and kinetic selectivity.

PLoS computational biology·2022
Same author

Behavior of the van der Waals force between a plate and a single-walled carbon nanotube under uniform hydrostatic pressure: a theoretical study.

Journal of physics. Condensed matter : an Institute of Physics journal·2020
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: May 29, 2025

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.0K

Finite-size Nagle-Kardar model: Casimir force.

Daniel Dantchev1,2,3, Nicholay Tonchev4, Joseph Rudnick2

  • 1Bulgarian Academy of Sciences, Institute of Mechanics, Academic Georgy Bonchev St. Building 4, 1113 Sofia, Bulgaria.

Physical Review. E
|February 7, 2025
PubMed
Summary
This summary is machine-generated.

We derived exact results for the critical Casimir force in the Nagle-Kardar model. Unexpectedly, the force is repulsive near critical and tricritical points, violating the boundary condition rule.

More Related Videos

Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches
07:31

Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches

Published on: September 1, 2023

2.1K
Experimental Multiscale Methodology for Predicting Material Fouling Resistance
09:13

Experimental Multiscale Methodology for Predicting Material Fouling Resistance

1.4K

Related Experiment Videos

Last Updated: May 29, 2025

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.0K
Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches
07:31

Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches

Published on: September 1, 2023

2.1K
Experimental Multiscale Methodology for Predicting Material Fouling Resistance
09:13

Experimental Multiscale Methodology for Predicting Material Fouling Resistance

1.4K

Area of Science:

  • Statistical Mechanics
  • Condensed Matter Physics

Background:

  • The Nagle-Kardar model describes a 1D Ising chain with competing interactions.
  • Critical Casimir force (CCF) behavior is typically linked to boundary conditions.

Purpose of the Study:

  • Derive exact results for CCF in the Nagle-Kardar model with periodic boundary conditions (PBCs).
  • Investigate the influence of competing ferromagnetic and antiferromagnetic interactions on CCF.

Main Methods:

  • Exact derivation of CCF for the Nagle-Kardar model.
  • Analysis of the model in the thermodynamic limit with PBCs.
  • Identification of critical and tricritical points.

Main Results:

  • Identified a critical line and a tricritical point in the interaction parameter plane.
  • CCF exhibits unusual repulsive behavior near critical and tricritical points with PBCs.
  • Observed a violation of the standard boundary condition rule for CCF.

Conclusions:

  • The CCF can be repulsive even with periodic boundary conditions, challenging established theories.
  • The interplay of competing interactions and boundary conditions significantly alters CCF behavior.
  • This study provides new insights into the universality classes of phase transitions.