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

Crossover Experiments01:16

Crossover Experiments

4.6K
Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
4.6K
The Role of Ion Channels in Neuronal Computation01:19

The Role of Ion Channels in Neuronal Computation

3.9K
A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
3.9K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.3K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.3K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.5K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.5K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.5K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.5K
Ion Channels01:19

Ion Channels

91.6K
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.6K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Multifunctional electrochemical memory stabilized by phase coexistence.

Science advances·2026
Same author

Parallel execution of nonlinear logic circuits using reconfigurable free-space diffractive optics.

Nature communications·2026
Same author

Diffusive memristors in the edge of chaos.

Nature communications·2026
Same author

Scaling nanoribbon transistors with monolayer transition metal dichalcogenides.

Nature nanotechnology·2026
Same author

Peak2Patch: High-Fidelity Functional Group Identification through Attention-Based Fusion of Infrared and Mass Spectra.

ACS omega·2026
Same author

An Atom-Precise Approach to Damp First-Order Phase Transitions and Its Implications for Neuromorphic Signal Processing.

Journal of the American Chemical Society·2026

Video Experimental Relacionado

Updated: Feb 15, 2026

An Optogenetic Approach for Assessing Formation of Neuronal Connections in a Co-culture System
11:22

An Optogenetic Approach for Assessing Formation of Neuronal Connections in a Co-culture System

Published on: February 17, 2015

14.0K

Formación de Canales Inducida Electrotermalmente en una Neurona de Transición de Espín

Elena Salagre1, Mahnaz Islam1,2, Yeonju Yu3

  • 1Sandia National Laboratories, 7011 East Ave, Livermore, California 94550, United States.

ACS nano
|February 13, 2026
PubMed
Resumen

Los dispositivos de LaCoO3 (LCO) muestran un comportamiento único de canal conductor para la computación neuromórfica. Estos canales son más estrechos y eficientes que los de VO2, pero exhiben efectos de salto y memoria, ofreciendo nuevas funcionalidades.

Palabras clave:
espectroscopia Ramanneurona artificialmicroscopía infrarrojatransición metal-aislantetransición de espín

Más Videos Relacionados

Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy
10:19

Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy

Published on: January 21, 2019

7.0K
Inducing Plasticity of Astrocytic Receptors by Manipulation of Neuronal Firing Rates
12:47

Inducing Plasticity of Astrocytic Receptors by Manipulation of Neuronal Firing Rates

Published on: March 20, 2014

14.7K

Videos de Experimentos Relacionados

Last Updated: Feb 15, 2026

An Optogenetic Approach for Assessing Formation of Neuronal Connections in a Co-culture System
11:22

An Optogenetic Approach for Assessing Formation of Neuronal Connections in a Co-culture System

Published on: February 17, 2015

14.0K
Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy
10:19

Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy

Published on: January 21, 2019

7.0K
Inducing Plasticity of Astrocytic Receptors by Manipulation of Neuronal Firing Rates
12:47

Inducing Plasticity of Astrocytic Receptors by Manipulation of Neuronal Firing Rates

Published on: March 20, 2014

14.7K

Área de la Ciencia:

  • Ciencia de Materiales
  • Física de la Materia Condensada
  • Neurociencia

Sus antecedentes:

  • Se exploran óxidos correlacionados para la computación neuromórfica debido a sus estados de resistencia sintonizables.
  • Las transiciones aislante-metal (IMT) de primer orden son comunes, pero los materiales de transición de espín de segundo orden como LaCoO3 (LCO) ofrecen funcionalidades alternativas.
  • Los detalles microscópicos de la formación de canales conductores en dispositivos de LCO siguen sin reportarse en gran medida.

Objetivo del estudio:

  • Revelar los detalles espaciotemporales de la formación de canales conductores en dispositivos de LaCoO3 (LCO).
  • Comparar el comportamiento de los canales de LCO con otros materiales como VO2 para aplicaciones neuromórficas.
  • Investigar la influencia de las transiciones de espín en las características del canal y el rendimiento del dispositivo.

Principales métodos:

  • Combinación de microscopía infrarroja (IR) y Raman.
  • Simulaciones de elementos finitos (FES).
  • Investigación experimental de materiales de LaCoO3 (LCO) y VO2.

Principales resultados:

  • Los canales de LaCoO3 (LCO) son más estrechos y eficientes que los de VO2, pero más sensibles a los campos eléctricos y al desorden.
  • Se observó un salto repetido de canales entre ubicaciones bajo oscilaciones en estado estacionario.
  • Se identificaron efectos de memoria a alto voltaje en dispositivos de LCO.
  • La transición de espín en LCO influye significativamente en la nucleación del canal, aumentando la sensibilidad al desorden y la geometría del electrodo.

Conclusiones:

  • LaCoO3 (LCO) exhibe una dinámica de canal única, que incluye salto estocástico y efectos de memoria, impulsada por su transición de espín.
  • Estas características presentan tanto desafíos (sensibilidad al desorden) como oportunidades para funcionalidades novedosas de computación neuromórfica.
  • Comprender estos detalles microscópicos es crucial para diseñar la próxima generación de neuronas artificiales.