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

Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

3.7K
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, commutators...
3.7K
Electric Generator: Alternator01:25

Electric Generator: Alternator

2.6K
Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...
2.6K
Back EMF01:24

Back EMF

4.1K
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...
4.1K
DC Generator01:19

DC Generator

2.7K
An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
2.7K
Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

1.6K
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
1.6K
Electro-mechanical Systems01:19

Electro-mechanical Systems

1.3K
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...
1.3K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

A silver nanocluster-based nanoprobe for thiram determination in food and environmental samples.

Analytical methods : advancing methods and applications·2026
Same author

A Schiff-Base Molecular Crystal with Large Effective Transverse Piezoelectric Coefficient and Low Dielectric Loss.

The journal of physical chemistry letters·2026
Same author

Low-cost bimetallic FeNi alloy nanoparticles loaded on nitrogen-doped carbon nanotubes for electrochemical sensing of copper ions.

The Analyst·2026
Same author

Metal-Organic Framework Goes Perovskite: A Self-Healing Neutral X-Site Perovskite Ferroelastic Crystal.

Journal of the American Chemical Society·2026
Same author

Palladium-Catalyzed Domino Reaction of 2-Alkynylanilines with 2-Ethynylaziridines─Access to Indole and Carbazole Derivatives.

Organic letters·2026
Same author

Neutral X-Site ABX<sub>3</sub>-Type Perovskites.

Angewandte Chemie (International ed. in English)·2026

Video Experimental Relacionado

Updated: May 7, 2026

Fabrication Process of Silicone-based Dielectric Elastomer Actuators
10:32

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Published on: February 1, 2016

34.0K

Efectos electromecánicos gigantes en polímeros

Zhong-Xia Wang1, Wei-Qiang Liao1

  • 1Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China.

Science (New York, N.Y.)
|March 24, 2022
PubMed
Resumen
Este resumen es generado por máquina.

Una nueva cadena de polímero de cuatro ingredientes demuestra capacidades piezoeléctricas récord. Este avance en la ciencia de los polímeros podría conducir a dispositivos de recolección de energía más eficientes.

Más Videos Relacionados

Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

9.4K
Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.4K

Videos de Experimentos Relacionados

Last Updated: May 7, 2026

Fabrication Process of Silicone-based Dielectric Elastomer Actuators
10:32

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Published on: February 1, 2016

34.0K
Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

9.4K
Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.4K

Área de la Ciencia:

  • Ciencias de los Polímeros
  • Ciencias de los materiales
  • Nanotecnología

Sus antecedentes:

  • Los materiales piezoeléctricos generan carga eléctrica en respuesta a la tensión mecánica aplicada.
  • El desarrollo de polímeros con alto rendimiento piezoeléctrico es crucial para la electrónica flexible y la recolección de energía.

Objetivo del estudio:

  • Para sintetizar y caracterizar una nueva cadena de polímeros de cuatro ingredientes.
  • Para evaluar las propiedades piezoeléctricas del polímero sintetizado.

Principales métodos:

  • Para la preparación de la película de polímero se emplearon técnicas de fundición en solución y de recubrimiento por hilatura.
  • Los coeficientes piezoeléctricos se midieron utilizando un analizador de impedancia especializado.

Principales resultados:

  • La cadena de polímero desarrollada exhibió una capacidad piezoeléctrica sin precedentes, superando los parámetros de referencia existentes.
  • El material demostró una excelente estabilidad mecánica y procesamiento.

Conclusiones:

  • El nuevo polímero de cuatro ingredientes representa un avance significativo en los materiales piezoeléctricos.
  • Este material es muy prometedor para aplicaciones en sensores, actuadores y dispositivos autoalimentados.