Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Electro-mechanical Systems01:19

Electro-mechanical Systems

1.1K
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.1K
Back EMF01:24

Back EMF

3.2K
Generators convert mechanical energy into electrical energy, whereas motors convert electrical energy into mechanical energy. A motor works by sending a current through a loop of wire located in a magnetic field. As a result, the magnetic field exerts a torque on the loop. This rotates a shaft, extracting mechanical work from the electrical current sent in initially. When the coil of a motor is turned, magnetic flux changes through the coil, and an emf (consistent with Faraday's law) is...
3.2K
Motional Emf01:22

Motional Emf

3.3K
Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
3.3K
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

3.3K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process,...
3.3K
Electromotive Force02:36

Electromotive Force

27.1K
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled  that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc  with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one...
27.1K
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

2.4K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.4K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Effect of Precompression on Detonation Performance and Products of Energetic Materials: Application to CL-20.

The journal of physical chemistry. C, Nanomaterials and interfaces·2026
Same author

Cationic carbon nanotube modulates surface fields for general acidic CO<sub>2</sub> reduction with aqueous organic cations.

Nature communications·2026
Same author

Brain-Computer Interfaces: The Dawn of a New Era in Disease Treatment.

Exploration (Beijing, China)·2026
Same author

A Deep-Red Emissive Cage-in-Rings Complex for Lysosome Imaging.

Angewandte Chemie (International ed. in English)·2026
Same author

The mechanism for ligand activation of the Smoothened G protein-coupled receptor.

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

Computational study of multicharged cyclodextrin derivatives with deep cavities for high-affinity host-guest recognition.

Soft matter·2026

Video Experimental Relacionado

Updated: Aug 14, 2025

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.5K

Un motor eléctrico molecular

Long Zhang1, Yunyan Qiu2, Wei-Guang Liu3

  • 1Department of Chemistry, Northwestern University, Evanston, IL, USA. long.zhang@northwestern.edu.

Nature
|January 11, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un motor molecular eléctrico utilizando una estructura de [3]catenano. Este motor cuenta con dos anillos entrelazados que giran unidireccionalmente alrededor de un bucle, impulsado por electricidad, marcando un paso hacia máquinas moleculares sostenibles.

Más Videos Relacionados

Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation
08:27

Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

Published on: August 28, 2017

5.4K
Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation
08:09

Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation

Published on: October 15, 2019

6.6K

Videos de Experimentos Relacionados

Last Updated: Aug 14, 2025

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.5K
Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation
08:27

Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

Published on: August 28, 2017

5.4K
Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation
08:09

Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation

Published on: October 15, 2019

6.6K

Área de la Ciencia:

  • Química supramolecular
  • Máquinas moleculares
  • Nanotecnología

Sus antecedentes:

  • Los motores eléctricos macroscópicos son vitales, impulsando el interés en el desarrollo de motores moleculares impulsados por electricidad.
  • Los motores moleculares existentes a menudo carecen de un movimiento unidireccional eficiente o dependen de combustibles químicos.

Objetivo del estudio:

  • Diseñar y demostrar un motor molecular impulsado eléctricamente capaz de un movimiento rotativo continuo y unidireccional.
  • Investigar el papel de las interacciones de anillos entrelazados en el logro del movimiento molecular controlado.

Principales métodos:

  • Síntesis de una estructura molecular [3]catenano con dos ciclóbios (paraquat-p-fenileno) (CBPQT4+) anillos alrededor de un bucle de 50 miembros.
  • Utilizando un voltaje oscilante o un potencial redox modulado para alimentar la circunrotación unidireccional de los anillos.
  • Utilizando un mecanismo de energía parpadeante para guiar el movimiento.

Principales resultados:

  • Se logró un movimiento unidireccional del 85% de ambos anillos CBPQT4+ alrededor del bucle.
  • Se observó una superficie de energía potencial bidimensional que surge de las interacciones entre anillos, análoga a la FOF1 ATP sintasa.
  • Demostró que un [2]catenano carecía de suficiente asimetría cinética para el movimiento unidireccional, destacando la importancia del segundo anillo en el [3]catenano.

Conclusiones:

  • Se ha demostrado con éxito un motor molecular sin residuos y accionado eléctricamente basado en un [3]catenano.
  • El sistema de anillos entrelazados proporciona una ruptura de simetría esencial para el movimiento unidireccional.
  • Este trabajo es un avance significativo hacia el desarrollo de motores eléctricos moleculares de superficie.