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

Coulomb's Law

Coulomb's Law

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 force on...

Electric Field of a Continuous Line Charge

Electric Field of a Continuous Line Charge

In physics, symmetry in a system means that something in the considered system remains unchanged due to a specific operation to which it is subjected. For example, consider a horizontal square. The square looks the same if its right and left sides are interchanged. Hence, it is symmetric under a right-left interchange.
In calculations of electric fields, symmetry is of great use. For example, while calculating electric fields of continuous charge distributions.
Consider a line element with a...

Electric Field of Two Equal and Opposite Charges

Electric Field of Two Equal and Opposite Charges

Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...

Electric Field of a Charged Disk

Electric Field of a Charged Disk

The simplest case of a surface charge distribution is the uniformly charged disk. Calculating its electric field also helps us calculate the electric field of a large plane of charge.
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...

Calculations of Electric Potential II

Calculations of Electric Potential II

An electric dipole is a system of two equal but opposite charges, separated by a fixed distance. This system is used to model many real-world systems, including atomic and molecular interactions. One of these systems is the water molecule, but only under certain circumstances. These circumstances are met inside a microwave oven, where electric fields with alternating directions make the water molecules change orientation. This vibration is equivalent to heat at the molecular level.
Consider a...

Gauss's Law: Cylindrical Symmetry

Gauss's Law: Cylindrical Symmetry

A charge distribution has cylindrical symmetry if the charge density depends only upon the distance from the axis of the cylinder and does not vary along the axis or with the direction about the axis. In other words, if a system varies if it is rotated around the axis or shifted along the axis, it does not have cylindrical symmetry. In real systems, we do not have infinite cylinders; however, if the cylindrical object is considerably longer than the radius from it that we are interested in,...

You might also read

Related Articles

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

Sort by

Same author

The effectiveness of clinical pathway software in inpatient settings: A systematic review.

International journal of medical informatics·2021

Same author

Perceived effectiveness of clinical pathway software: A before-after study in the Netherlands.

International journal of medical informatics·2019

Same author

Mixed-spin system with supersolid phases: magnetocaloric effect and thermal properties.

Journal of physics. Condensed matter : an Institute of Physics journal·2019

Same author

Spin supersolid phase in coupled alternating spin chains.

Scientific reports·2018

Same author

Pros and Cons of Clinical Pathway Software Management: A Qualitative Study.

Studies in health technology and informatics·2018

Same author

Aberrant promoter hypermethylation of selected apoptotic genes in childhood acute lymphoblastic leukemia among North Indian population.

Experimental oncology·2017

Same journal

Topological properties of curved spacetime extended Su-Schrieffer-Heeger model.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same journal

Influence of lattice expansion on Cr ferromagnetism in Ce<sub>(1-x)</sub>La<sub>(x)</sub>CrGe<sub>3</sub>compounds revealed by atomic-scale measurements.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same journal

Bond-length-driven magnetic transition in quasi-one-dimensional CrSb<i>X</i><sub>3</sub>(<i>X</i>=S, Se).

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same journal

Anelasticity in MgAl2O4 spinel due to cation order-disorder.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same journal

The influence of water on the dynamics of alternating polymers P(C<sub>8</sub>EG<sub>4</sub>) and P(C<sub>4</sub>EG<sub>4</sub>) by broadband dielectric spectroscopy.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

Same journal

How surface curvature shapes water nanodroplets in air.

Journal of physics. Condensed matter : an Institute of Physics journal·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

A closed form for the electrostatic interaction between two rod-like charged objects.

M Askari¹, J Abouie

¹Physics Department, Shahrood University of Technology, Shahrood 36199-95161, Iran.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|March 26, 2011

Summary

This summary is machine-generated.

We derived a formula for electrostatic interactions between charged rods. For rods of equal length, specific configurations show minimum energy, and their thermodynamic properties reveal a specific heat maximum at certain distances.

More Related Videos

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Published on: September 3, 2013

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Related Experiment Videos

Last Updated: Jun 3, 2026

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Published on: September 3, 2013

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Area of Science:

Computational Physics
Physical Chemistry
Statistical Mechanics

Background:

Understanding electrostatic interactions is crucial in various scientific fields.
Charged rod-like objects are relevant models for molecules and materials.
Previous studies often simplified object shapes or orientations.

Purpose of the Study:

To calculate the electrostatic interaction energy between two arbitrarily oriented charged rods in 3D.
To investigate the thermodynamic properties of a one-dimensional system of such rods.

Main Methods:

Derivation of a closed-form analytical formula for electrostatic interaction energy.
Analysis of interaction energy minima for rods of equal length.
Introduction of scaled temperature to study thermodynamic properties, specifically specific heat.

Main Results:

A general formula for interaction energy based on separation, lengths, and orientations was obtained.
For equal-length rods and separations r ≤ 0.8l, two minimum energy configurations were identified.
The specific heat of a 1D system of charged rods exhibits a maximum at r < 0.8l.

Conclusions:

The derived formula provides a comprehensive tool for analyzing charged rod interactions.
The study reveals specific orientational preferences driven by electrostatic forces.
Thermodynamic behavior, particularly specific heat, is sensitive to inter-rod distance and temperature.