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

Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

Magnetic Damping

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...

You might also read

Related Articles

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

Sort by

Same author

A microfluidic band-pass filter for flexible fiber separation.

Proceedings of the National Academy of Sciences of the United States of America·2026

Same author

Lifetime and fluctuations of specific bonds between anisotropic colloids mediated through depletion interactions.

Soft matter·2025

Same author

Assessment of GFR Estimation Methods in Patients With Obesity.

The Journal of clinical endocrinology and metabolism·2025

Same author

Melting of nonreciprocal solids: How dislocations propel and fission in flowing crystals.

Proceedings of the National Academy of Sciences of the United States of America·2025

Same author

Emergence of collective oscillations in massive human crowds.

Nature·2025

Same author

Interpreting Neural Operators: How Nonlinear Waves Propagate in Nonreciprocal Solids.

Physical review letters·2024

Search research articles

Related Experiment Video

Updated: Jun 5, 2026

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Published on: May 2, 2014

Three-dimensional beating of magnetic microrods.

Naïs Coq¹, Sandrine Ngo, Olivia du Roure

¹PMMH ESPCI-ParisTech-CNRS UMR 7636-Université Pierre et Marie Curie-Université Denis Diderot, 10 rue Vauquelin, 75231 Paris Cedex 05, France. nais.coq@espci.fr

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|January 15, 2011

Summary

Paramagnetic microrods driven by magnetic fields exhibit distinct dynamic regimes. A critical field inclination angle leads to nonlinear behavior and complex 3D trajectories due to geometric nonlinearities.

More Related Videos

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

Related Experiment Videos

Last Updated: Jun 5, 2026

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Published on: May 2, 2014

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

Area of Science:

Physics
Materials Science
Soft Matter Physics

Background:

Paramagnetic microrods are model systems for studying microscale dynamics.
Surface-anchored objects driven by external fields can exhibit complex behaviors.

Purpose of the Study:

To experimentally and theoretically investigate the dynamics of surface-anchored paramagnetic microrods under a precessing magnetic field.
To identify different dynamic regimes based on field parameters and understand the underlying mechanisms.

Main Methods:

Experimental observation of microrod precession.
Theoretical modeling incorporating magnetic dipolar interactions.
Analysis of frequency and inclination dependence of the driving magnetic field.

Main Results:

Two distinct dynamic regimes were identified: linear and nonlinear.
Linear response occurs at low frequencies or small field inclinations.
Above a critical inclination angle (~55°), nonlinear dynamics emerge, characterized by complex 3D trajectories.
A minimal model successfully captures these behaviors, attributing complexity to geometric nonlinearities.

Conclusions:

The dynamics of paramagnetic microrods are highly sensitive to the inclination of the driving magnetic field.
Geometric nonlinearities in magnetic dipolar coupling are the primary cause of complex trajectories.
The findings provide insights into the behavior of micro- and nanostructures in magnetic fields.