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

Torque01:10

Torque

Torque is an important quantity for describing the dynamics of a rotating rigid body. We see the application of torque in many ways in the world, such as when pressing the accelerator in a car, which causes the engine to apply additional torque on the drivetrain. Here, we define torque and provide a framework to create an equation to calculate torque for a rigid body with fixed-axis rotation.
Torque can be considered as the rotational counterpart to force. Since forces change the translational...
Net Torque Calculations01:19

Net Torque Calculations

When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is the distance from the pivot point (the hex nut in this case) to the person’s hand. If this distance is large, the torque is higher. Only the component of the force perpendicular to the lever arm contributes to the torque. Therefore, pushing the wrench perpendicular to the lever arm is more advantageous. If multiple people apply force to rotate...
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...

You might also read

Related Articles

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

Sort by
Same author

Pharmacokinetic modelling as a tool to assess TB treatment adherence: application to the REMEMBER study.

IJTLD open·2026
Same author

Abstracts of the 26th International Workshop on Clinical Pharmacology of HIV, Hepatitis and other Antiviral Drugs 2025, 3-4 September 2025, Amsterdam, the Netherlands.

British journal of clinical pharmacology·2025
Same author

Model-based evaluation of adherence to bedaquiline and clofazimine in adults with drug-resistant TB.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease·2025
Same author

Response to Correspondence to "Short-course subcutaneous treatment with PQ Grass strongly improves symptom and medication scores in grass allergy".

Allergy·2024
Same author

Modelling red blood cell optical trapping by machine learning improved geometrical optics calculations.

Biomedical optics express·2023
Same author

Short-course subcutaneous treatment with PQ Grass strongly improves symptom and medication scores in grass allergy.

Allergy·2023

Related Experiment Video

Updated: Jul 4, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Radiation torque and force on optically trapped linear nanostructures.

F Borghese1, P Denti, R Saija

  • 1Dipartimento di Fisica della Materia e Tecnologie Fisiche Avanzate, Università di Messina, Salita Sperone 31, 98166 Messina, Italy. borghese@ortica.unime.it

Physical Review Letters
|June 4, 2008
PubMed
Summary

This study explores optical trapping of linear nanostructures using optical tweezers. We analyzed forces and stability, finding linear geometry plays a key role in trapping mechanisms.

More Related Videos

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System
09:48

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Published on: June 30, 2018

Related Experiment Videos

Last Updated: Jul 4, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System
09:48

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Published on: June 30, 2018

Area of Science:

  • Physics
  • Nanotechnology
  • Optics

Background:

  • Optical tweezers are crucial for manipulating micro- and nanostructures.
  • Understanding the behavior of elongated nanostructures in optical traps is essential for advanced applications.

Purpose of the Study:

  • To investigate the optical trapping of highly elongated linear nanostructures.
  • To analyze the radiation torque and trapping forces on these structures.
  • To clarify the role of linear geometry in optical trapping mechanisms.

Main Methods:

  • Modeling nanostructures as chains of identical spherical scatterers.
  • Utilizing multipole field expansions within the transition matrix approach.
  • Calculating force constants and trap parameters for stability analysis.

Main Results:

  • Detailed analysis of radiation torque and trapping forces on linear nanostructures.
  • Investigation of both orientational and trapping stability.
  • Comparison of theoretical findings for various nanowire materials with experimental data.

Conclusions:

  • Linear geometry significantly influences the optical trapping mechanism.
  • The transition matrix approach provides accurate predictions for optical trapping of nanostructures.
  • Theoretical models align well with experimental observations for nanowire trapping.