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

Water and Mineral Acquisition02:34

Water and Mineral Acquisition

24.3K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
24.3K
Water: A Bronsted-Lowry Acid and Base02:30

Water: A Bronsted-Lowry Acid and Base

43.0K
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
43.0K
Energy Supply for Muscle Contraction01:25

Energy Supply for Muscle Contraction

5.3K
Skeletal muscle fibers have the unique ability to switch between rest and contraction states, using different sources of ATP for energy. The contraction cycle and Ca2+ transport back into the sarcoplasmic reticulum for relaxation require significant ATP. However, the ATP reserves in muscle fibers are limited and can only sustain contractions for a few seconds. Additional ATP production becomes necessary for prolonged contractions. As a result, muscle fibers generate ATP through various sources,...
5.3K
Muscle Recovery and Fatigue01:24

Muscle Recovery and Fatigue

4.4K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
4.4K
Gas Solubility01:31

Gas Solubility

133
Gas solubility in liquids forms liquid-gas solutions, such as soft drinks, where carbon dioxide is dissolved in water, and the ocean, where the solubility of oxygen and carbon dioxide supports marine life. The ability of oceans to dissolve gases impacts weather conditions in the troposphere.However, gas-liquid interactions vary. For instance, hydrogen chloride gas is highly soluble in water, while oxygen's solubility is much lower. Because these solutions are non-ideal, Raoult’s law,...
133
Strength and Heat of Hydration01:29

Strength and Heat of Hydration

941
The hydration of cement is an exothermic reaction in which heat is generated as cement hydrates. This heat of hydration is critical to cement's strength development. The rate at which this heat is generated affects the temperature rise, with a majority of the heat being released early in the hydration process, half within the first three days, and about 75% within the first week.
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...
941

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Decoupling Stiffness and Toughness in Solid Polymer Electrolytes via Reversible Crystallization.

ACS applied materials & interfaces·2026
Same author

Solvent dispersibility of two-dimensional particles with pseudo- and permanently interlocked polyethylene oxide brushes.

RSC advances·2026
Same author

Unveiling Distinct Humidity Sensitivity of Relaxation Properties in Vitrimer-Like Materials with Hydrophilic, Bond Exchangeable Domains.

Macromolecular rapid communications·2026
Same author

Spectral diversity of vertebrate retinal photoisomerase RGRs.

Biophysical journal·2026
Same author

Coarse-grained molecular dynamics simulations of slide-ring gels under finite deformation: influence of sliding ring rearrangement on softness and extensibility.

Soft matter·2025
Same author

Effects of Heterogeneous Mixing of Imidazolium-Based Ionic Liquids with Alcohols on Complex Formation of Ni(II) Ion.

The journal of physical chemistry. B·2024

Video Experimental Relacionado

Updated: May 3, 2026

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture
10:49

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture

Published on: July 10, 2013

15.3K

Hidrogeles resistentes y de refuerzo rápido

Chang Liu1, Naoya Morimoto1, Lan Jiang1

  • 1Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.

Science (New York, N.Y.)
|June 4, 2021
PubMed
Resumen

Este estudio presenta una nueva estrategia de refuerzo sin daños para hidrogeles duros utilizando la cristalización inducida por tensión. Este método logra una rápida recuperación de energía y una dureza superior en los geles de polietileno glicol (PEG), superando las limitaciones de los enfoques tradicionales de daño sacrificial.

Más Videos Relacionados

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
12:07

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

13.7K
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
07:04

Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde

Published on: November 11, 2022

2.7K

Videos de Experimentos Relacionados

Last Updated: May 3, 2026

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture
10:49

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture

Published on: July 10, 2013

15.3K
Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
12:07

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

13.7K
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
07:04

Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde

Published on: November 11, 2022

2.7K

Área de la Ciencia:

  • Ciencias de los materiales
  • Química de los polímeros
  • Ingeniería de Biomateriales

Sus antecedentes:

  • Los hidrogeles duros a menudo dependen de estructuras de sacrificio para la disipación de energía, pero sufren daños irreversibles durante la carga cíclica.
  • Este daño conduce a una disminución significativa de la dureza del hidrogel después de un uso repetido, lo que limita sus aplicaciones prácticas.
  • Las estrategias de refuerzo existentes tienen dificultades para recuperarse rápidamente y mantener el rendimiento en condiciones dinámicas.

Objetivo del estudio:

  • Desarrollar una nueva estrategia de refuerzo sin daños para hidrogeles que supere las limitaciones del daño sacrificial.
  • Investigar el potencial de la cristalización inducida por tensión como mecanismo para mejorar la dureza del hidrogel y la recuperación de energía.
  • Evaluar el rendimiento de los geles de anillos deslizantes utilizando esta estrategia en condiciones de carga cíclica.

Principales métodos:

  • Se utilizan geles de anillos deslizantes con cadenas de polietileno glicol (PEG) altamente orientadas.
  • Cristalización inducida por tensión a través de una gran deformación (elongación).
  • Se observó la formación y fusión de estructuras cristalinas durante los ciclos de alargamiento y retracción.

Principales resultados:

  • Casi el 100% de recuperación rápida de la energía de extensión, demostrando un mecanismo de refuerzo sin daños.
  • Exhibió excelentes valores de dureza que van desde 6,6 hasta 22 megajulios por metro cúbico.
  • Se ha demostrado una dureza un orden de magnitud superior a la de los geles homogéneos de PEG convencionalmente entrelazados.

Conclusiones:

  • La cristalización inducida por tensión ofrece una estrategia eficaz y sin daños para reforzar los hidrogeles.
  • Este enfoque mejora significativamente la dureza del hidrogel y permite una rápida recuperación de energía, superando los métodos tradicionales.
  • Los geles de anillo deslizante desarrollados son muy prometedores para aplicaciones que requieren materiales blandos duraderos y resistentes.