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

Types of Chemical Bonds02:37

Types of Chemical Bonds

Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type and formation of different bonds. Chemical bonding is central to chemistry; it explains how atoms or ions bond together to form molecules. It explains why some bonds are strong and others are weak, or why one carbon bonds with two oxygens and not three; why water is H2O and not H4O.
Electric Charges01:11

Electric Charges

From lightning during thunderstorms to electronic devices, the phenomenon of electromagnetism is all around us. The electromagnetic force is one of the four fundamental forces of nature. It has been known to humanity in various forms for thousands of years. For example, the ancient Greek philosopher Thales of Miletus recorded his experiments on static electricity using amber and fur in the sixth century BC.
The English physicist William Gilbert studied the phenomenon of static electricity in...
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...
Electrochemical Systems01:24

Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
Types of Reversible Electrodes01:24

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Investigating the familiarity effect in texture segmentation by means of event-related brain potentials.

Vision research·2017
Same author

Highly compact fiber Fabry-Perot interferometer: A new instrument design.

The Review of scientific instruments·2016
Same author

Development of a precision nanoindentation platform.

The Review of scientific instruments·2013
Same author

The consequences of genetic variation in sex peptide expression levels for egg laying and retention in females.

Heredity·2012
Same author

Electron transport in gold nanowires: stable 1-, 2- and 3-dimensional atomic structures and noninteger conduction states.

Physical review letters·2011
Same author

DDT resistance, epistasis and male fitness in flies.

Journal of evolutionary biology·2011

Video Experimental Relacionado

Updated: Jun 26, 2026

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
08:59

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Published on: January 23, 2013

La electrificación por contacto y la adhesión entre materiales diferentes.

R G Horn, D T Smith

    Science (New York, N.Y.)
    |April 17, 1992
    PubMed
    Resumen

    El simple contacto entre los aislantes de mica y sílice provoca una transferencia espontánea de carga eléctrica, creando una fuerte atracción. Este fenómeno, crucial para la comprensión de la electricidad estática, da como resultado densidades de carga superficiales significativas y trabajos de separación comparables a las energías de fractura del material.

    Más Videos Relacionados

    Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
    08:12

    Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

    Published on: December 5, 2015

    Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
    06:34

    Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

    Published on: September 19, 2020

    Videos de Experimentos Relacionados

    Last Updated: Jun 26, 2026

    Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
    08:59

    Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

    Published on: January 23, 2013

    Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
    08:12

    Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

    Published on: December 5, 2015

    Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
    06:34

    Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

    Published on: September 19, 2020

    Área de la Ciencia:

    • Ciencias de la superficie Ciencias de la superficie.
    • La electricidad tribal.
    • La electrostática es la electrostática.

    Sus antecedentes:

    • Comprender los mecanismos fundamentales de transferencia de carga entre aislantes es esencial para diversas aplicaciones tecnológicas.
    • Investigaciones anteriores han explorado la electrificación por contacto, pero las mediciones precisas de la densidad de carga y la energía de separación siguen siendo críticas.
    • Los fenómenos eléctricos estáticos son omnipresentes, sin embargo, los procesos detallados que rigen la separación de cargas requieren más aclaración.

    Objetivo del estudio:

    • Para medir cuantitativamente la fuerza superficial y la densidad de carga superficial resultante del contacto de materiales aislantes lisos.
    • Investigar la energía requerida para separar superficies cargadas por transferencia eléctrica espontánea.
    • Para obtener información sobre los mecanismos de separación de cargas mediante la observación de las descargas de gas durante la separación superficial.

    Principales métodos:

    • Medición simultánea de las fuerzas superficiales y las cargas superficiales.
    • Utilizando superficies lisas de mica y sílice en contacto dentro de un entorno de nitrógeno seco.
    • Observar descargas parciales de gas a una distancia de separación de aproximadamente 1 micrómetro.

    Principales resultados:

    • Se ha demostrado la transferencia espontánea de carga eléctrica entre la mica y la sílice tras un simple contacto sin deslizamiento.
    • Se midieron densidades de carga superficial significativas que van desde 5 a 20 milicoulombos por metro cuadrado después del contacto.
    • Determinó que el trabajo requerido para la separación de la superficie es de 6 a 9 joules por metro cuadrado, comparable a las energías de fractura.

    Conclusiones:

    • El simple contacto entre aislantes diferentes puede conducir a una transferencia de carga sustancial y fuertes fuerzas atractivas.
    • Las densidades de carga observadas y las energías de separación resaltan las importantes consecuencias energéticas de la electrificación de contacto.
    • Las observaciones de descarga de gas proporcionan información valiosa sobre los procesos fundamentales de separación de cargas en los fenómenos eléctricos estáticos.