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Videos de Conceptos Relacionados

Van de Graaff Generator01:15

Van de Graaff Generator

Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

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...
DC Generator01:19

DC Generator

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...
Full wave rectifier01:22

Full wave rectifier

A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC) and is more efficient than its half-wave counterpart. It typically includes a center-tapped transformer, two diodes, and a load resistor. The secondary winding of the transformer is divided to provide two equal voltages of opposite polarities, which is the pivotal element of full-wave rectification.
Half wave rectifier01:20

Half wave rectifier

A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...

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Video Experimental Relacionado

Updated: Jul 15, 2026

Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics
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Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

Published on: February 5, 2020

Nanogenerador de corriente continua impulsado por ondas ultrasónicas.

Xudong Wang1, Jinhui Song, Jin Liu

  • 1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA.

Science (New York, N.Y.)
|April 7, 2007
PubMed
Resumen

Este estudio presenta un nuevo nanogenerador de nanocables alimentado por ondas ultrasónicas, que produce corriente continua continua. Esta tecnología adaptable cosecha eficientemente la energía ambiental para los nanodispositivos.

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Área de la Ciencia:

  • Ciencia de los materiales Ciencia de los materiales.
  • Nanotecnología La nanotecnología es la nanotecnología.
  • Recopilación de energía (Energy Harvesting)

Sus antecedentes:

  • Los nanogeneradores de nanocables son cruciales para alimentar dispositivos a pequeña escala.
  • La recolección eficiente de energía de fuentes ambientales sigue siendo un desafío.

Objetivo del estudio:

  • Desarrollar un nanogenerador de nanocables impulsado por ondas ultrasónicas para una salida continua de corriente continua.
  • Explorar una tecnología de recolección de energía rentable y adaptable.

Principales métodos:

  • Fabricación de matrices de nanocables de óxido de zinc alineados verticalmente.
  • Integración con un electrodo de metal en zigzag para la interacción de ondas ultrasónicas.
  • Utilizando acoplamiento piezoeléctrico semiconductor para la conversión de energía.

Principales resultados:

  • Salida de corriente continua continua generada a partir de la entrada de ondas ultrasónicas.
  • Se ha demostrado una eficiente conversión de energía mecánica a eléctrica.
  • Generación, recolección y salida simultáneas de electricidad a partir de matrices de nanocables.

Conclusiones:

  • El nanogenerador desarrollado ofrece una solución móvil y rentable para la recolección de energía.
  • Esta tecnología presenta una fuente de energía potencial para nanodispositivos y nanosistemas.
  • Los nanogeneradores de nanocables impulsados por ondas ultrasónicas son prometedores para las futuras soluciones energéticas.