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

Diffusion01:12

Diffusion

222.3K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
222.3K
Diffusion01:21

Diffusion

6.7K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.7K
pH Scale02:41

pH Scale

80.6K
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
80.6K
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals01:17

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

3.5K
Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
3.5K
Electron Transport Chains01:28

Electron Transport Chains

113.3K
The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...
113.3K
Electron Carriers01:24

Electron Carriers

92.2K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
92.2K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Efficacies of Conventional Antifungals and Complementary and Alternative Medicine as Single or Combination Therapies Against <i>Candida</i> Biofilms in Recurrent Vaginal Candidiasis: An In Vitro Study.

Journal of fungi (Basel, Switzerland)·2026
Same author

A pediatric case of citrin deficiency presenting with recurrent hypertriglyceridemic pancreatitis-a case report.

Frontiers in pediatrics·2026
Same author

Approaches to Stabilized HOMO/LUMO Levels in Blue Emissive Carbene-Metal-Amides.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Case Report: Anti-glomerular basement membrane disease during pregnancy with favorable renal outcome, sequential biopsies, and dual anti-α1/α3(IV) and anti-LM521 antibodies.

Frontiers in immunology·2026
Same author

Spatial transcriptomics identifies distinct domains regulating yield-component traits of the wheat ear.

Science advances·2026
Same author

Using biofilm-targeting local antibiotics to treat recalcitrant medical device-associated infections: driveline infection as a model.

The Journal of antimicrobial chemotherapy·2026

Video Experimental Relacionado

Updated: Feb 15, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

1.1K

Difusión de electrones a escala de centímetros en las heteroestructuras orgánicas fotoactivas

Quinn Burlingame1, Caleb Coburn2, Xiaozhou Che3

  • 1Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, USA.

Nature
|January 18, 2018
PubMed
Resumen

Los investigadores desarrollaron un nuevo dispositivo de semiconductores orgánicos que logra la difusión de electrones a escala de centímetros. Este avance supera las limitaciones de la electrónica orgánica, permitiendo longitudes de difusión de carga significativamente más largas para mejorar el rendimiento.

Más Videos Relacionados

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
06:21

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Published on: March 13, 2017

10.9K
Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex
09:55

Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex

Published on: September 5, 2018

8.9K

Videos de Experimentos Relacionados

Last Updated: Feb 15, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

1.1K
A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
06:21

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Published on: March 13, 2017

10.9K
Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex
09:55

Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex

Published on: September 5, 2018

8.9K

Área de la Ciencia:

  • Productos electrónicos orgánicos
  • Física de los semiconductores
  • Ciencias de los materiales

Sus antecedentes:

  • Los semiconductores orgánicos ofrecen propiedades únicas como flexibilidad y ligereza, cruciales para aplicaciones en pantallas, iluminación y generación de energía.
  • Sin embargo, el desorden inherente en los materiales orgánicos conduce a propiedades eléctricas deficientes, incluidas las bajas movilidades de los portadores de carga y las longitudes de difusión cortas (< 1 micrómetro).

Objetivo del estudio:

  • Demostrar una heteroestructura orgánica fotoactiva capaz de superar las limitaciones del transporte de carga en semiconductores orgánicos.
  • Lograr y medir longitudes de difusión de carga significativamente más largas en materiales orgánicos.

Principales métodos:

  • Fabricación de una heterostructura orgánica fotoactiva con un canal de fullereno.
  • Integración de una capa de bloqueo de electrones y una heterojunción de donante:C70 de fullereno para la disociación de excitones.
  • Medición de la difusión de electrones en el canal de fullereno utilizando un modelo de difusión simple.

Principales resultados:

  • Se ha demostrado la difusión de electrones a escala de centímetros en un canal de fullereno.
  • Difusividad de carga medida tan alta como 0,83 ± 0,07 cm2/s en un canal C60 a temperatura ambiente.
  • Se han logrado longitudes de difusión de carga superiores a 3,5 cm, órdenes de magnitud superiores a los sistemas orgánicos típicos.

Conclusiones:

  • La heterostructura orgánica desarrollada mejora significativamente las longitudes de difusión de carga en semiconductores orgánicos.
  • Este avance allana el camino para dispositivos electrónicos orgánicos de alto rendimiento con capacidades de transporte de carga sin precedentes.
  • Los hallazgos desafían la comprensión existente de las limitaciones de transporte de carga en materiales orgánicos.