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

Conductors and Insulators01:19

Conductors and Insulators

10.9K
Some materials may easily let electrical charges pass through them, while others obstruct their flow. The former are called conductors and the latter insulators. The atomic structures of materials determine whether they are conductors or insulators of electricity.
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
10.9K
Insulation Coordination01:23

Insulation Coordination

577
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
577
Thermal Insulation in Masonry Walls01:22

Thermal Insulation in Masonry Walls

566
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
566
Protection of Alcohols02:31

Protection of Alcohols

8.1K
This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
Protection
It defines a protecting group as the masking agent to make the more reactive species inert to a given set of conditions. This concept is depicted via the illustration of liquid flow through different outlets in an assembly of pipes. The analogy helps to understand the role...
8.1K
Zones of Protection01:16

Zones of Protection

815
In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
Protective zones are defined by closed dashed lines, containing one or more components. A key characteristic of these zones is the strategic placement of...
815
Protecting Self-Esteem01:27

Protecting Self-Esteem

238
Self-esteem, a central component of psychological well-being, is actively maintained through various cognitive and behavioral strategies. Individuals employ specific mechanisms to preserve a positive self-concept and mitigate threats to their self-worth, particularly in contexts involving social evaluation or personal feedback. Four primary techniques are commonly used to sustain self-esteem.Manipulating AppraisalsOne prominent strategy involves manipulating appraisals from others. Individuals...
238

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Pre- and postoperative urodynamic risk stratification in infants and young children undergoing tethered cord release.

Journal of pediatric urology·2026
Same author

Smac mimetic combined with eCD4-Ig reverses latency without reducing SHIV reservoirs in rhesus macaques.

The Journal of clinical investigation·2026
Same author

Engraftment of gene-edited hematopoietic stem cells after antibody-drug conjugate conditioning in nonhuman primates.

Blood advances·2026
Same author

Quantized Crystalline-Electromagnetic Responses in Insulators.

Physical review letters·2026
Same author

Spectroscopic Evidence of Edge-Localized States in an Antiferromagnet Topological Insulator NdBi.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Separate Surface and Bulk Topological Anderson Localization Transitions in Disordered Axion Insulators.

Physical review letters·2025

Video Experimental Relacionado

Updated: Feb 13, 2026

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
08:14

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP

Published on: April 20, 2015

18.3K

Un aislante cuantizado de microondas cuádrupolo con estados de esquina protegidos topológicamente

Christopher W Peterson1, Wladimir A Benalcazar2, Taylor L Hughes2

  • 1Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-2918, USA.

Nature
|March 16, 2018
PubMed
Resumen

Los investigadores demostraron experimentalmente un aislante topológico cuádrupolo cuantizado utilizando un circuito de microondas. Esta fase topológica de orden superior exhibe una robustez única, con estados angulares protegidos por la topología a granel contra la deformación.

Más Videos Relacionados

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
08:42

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

20.7K
Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
07:57

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

2.6K

Videos de Experimentos Relacionados

Last Updated: Feb 13, 2026

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
08:14

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP

Published on: April 20, 2015

18.3K
How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
08:42

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

20.7K
Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
07:57

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

2.6K

Área de la Ciencia:

  • Física de la materia condensada
  • Mecánica Cuántica
  • Ciencias de los materiales

Sus antecedentes:

  • La polarización eléctrica en cristales se define teóricamente por la fase de Berry, explicando los momentos dipolo y las propiedades topológicas.
  • La teoría reciente extiende la fase de Berry a momentos multipolares eléctricos más altos, prediciendo nuevas fases topológicas.
  • Los aislantes topológicos de orden superior representan una nueva clase de materiales con propiedades topológicas únicas.

Objetivo del estudio:

  • Para demostrar experimentalmente un aislante topológico cuádrupolo cuantizado.
  • Para confirmar la existencia de fases topológicas de orden superior predichas por la teoría.
  • Investigar la protección topológica de los estados angulares en estos materiales.

Principales métodos:

  • Utilizó un circuito de microondas reconfigurable de frecuencia de gigahertz para emular un aislante topológico cuádrupolo cuantizado.
  • Se han realizado mediciones espectroscópicas para confirmar la fase topológica no trivial.
  • Investigó la robustez de los estados angulares deformando los bordes de la celosía.

Principales resultados:

  • Se ha demostrado con éxito experimentalmente un aislante topológico cuatrupolo cuantizado.
  • Los estados angulares identificados resultantes de la topología global.
  • Se ha confirmado que estos estados angulares están topológicamente protegidos y son robustos contra la deformación de la celosía.

Conclusiones:

  • La realización experimental de un aislante topológico cuádrupolo cuantizado valida las predicciones teóricas.
  • Los estados angulares observados exhiben una robustez única contra el desorden y la deformación, característica de los aislantes topológicos de orden superior.
  • Este trabajo abre caminos para explorar nuevas fases topológicas y sus aplicaciones.