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

Cohesion01:07

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a surface,...
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Accelerating Fluids01:17

Accelerating Fluids

When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
Excess Pressure Inside a Drop and a Bubble01:13

Excess Pressure Inside a Drop and a Bubble

The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
Surface Tension of Fluid01:22

Surface Tension of Fluid

Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies with...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Diaphragmatic pacing for ventilator weaning in a patient with cervical spine injury in Hong Kong: a case report.

Hong Kong medical journal = Xianggang yi xue za zhi·2026
Same author

Catalytic hybrid solvent regeneration in membrane vacuum processes for direct air capture.

Nature communications·2026
Same author

Template-Free Microfluidic Fabrication of Water-in-Water Microcapsules for Controlled Release.

ACS applied materials & interfaces·2026
Same author

An integrated molecular-thermodynamic framework for analyzing nanobubbles in supersaturated liquids.

RSC advances·2025
Same author

Liquid film thinning-thickening anomaly in electrolyte solutions.

Journal of colloid and interface science·2025
Same author

Catalytic Membrane Vacuum Regeneration: Enhancing Energy Efficiency and Renewable Compatibility in Direct Air Capture.

Small (Weinheim an der Bergstrasse, Germany)·2025

Video Experimental Relacionado

Updated: Jul 19, 2026

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions
08:49

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Fuerzas dinámicas entre dos gotas de aceite deformables en el agua.

Raymond R Dagastine1, Rogério Manica, Steven L Carnie

  • 1Particulate Fluids Processing Center, University of Melbourne, Victoria 3010, Australia.

Science (New York, N.Y.)
|July 15, 2006
PubMed
Resumen

Los investigadores cuantificaron las fuerzas dinámicas entre las gotas de líquido, revelando cómo la deformación interfacial y las fuerzas superficiales controlan las interacciones en sistemas de materia blanda como emulsiones y células.

Más Videos Relacionados

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
07:18

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Real-Time Force Measurement Between Emulsion Droplets During Enzymatic Breakdown
04:56

Real-Time Force Measurement Between Emulsion Droplets During Enzymatic Breakdown

Published on: June 27, 2025

Videos de Experimentos Relacionados

Last Updated: Jul 19, 2026

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions
08:49

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
07:18

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Real-Time Force Measurement Between Emulsion Droplets During Enzymatic Breakdown
04:56

Real-Time Force Measurement Between Emulsion Droplets During Enzymatic Breakdown

Published on: June 27, 2025

Área de la Ciencia:

  • Física de la materia blanda Física de la materia blanda Física de la materia blanda Física de la materia blanda Física de la materia blanda Física de la materia blanda Física de la materia blanda
  • Dinámica de fluidos La dinámica de fluidos.
  • La ciencia coloidal es la ciencia coloidal.

Sus antecedentes:

  • Las interacciones estáticas en las suspensiones coloidales son bien conocidas.
  • Las interacciones dinámicas en los sistemas de materia blanda, cruciales para las aplicaciones biológicas, siguen siendo menos comprendidas.
  • Las gotas de líquido en fluidos inmiscibles sirven como un sistema modelo para estudiar estas interacciones dinámicas.

Objetivo del estudio:

  • Presentar mediciones de fuerza directa y una descripción teórica cuantitativa de las fuerzas dinámicas entre gotas de líquido.
  • Para dilucidar la interacción entre la deformación interfacial, las fuerzas de superficie estáticas y el drenaje hidrodinámico.
  • Proporcionar información sobre las interacciones gota-gota a nanoescala y escalas de tiempo brownianas.

Principales métodos:

  • Se emplearon técnicas de medición de fuerza directa para cuantificar las interacciones.
  • Se desarrolló un marco teórico cuantitativo para describir las fuerzas dinámicas observadas.
  • El análisis se centró en la relación entre las propiedades de la interfaz y la dinámica de interacción.

Principales resultados:

  • Se demostró un fuerte vínculo entre la deformación interfacial, las fuerzas de superficie estáticas y el drenaje hidrodinámico.
  • Las interacciones dinámicas gotas-gotas se caracterizaron en escalas de longitud nanométrica.
  • Se observó que la dinámica ocurría en las escalas de tiempo de las colisiones brownianas.

Conclusiones:

  • El estudio proporciona una comprensión completa de las fuerzas dinámicas en los sistemas de gotas líquidas.
  • Los hallazgos son directamente aplicables al control y la manipulación de gotas en suspensión en varios sistemas de materia blanda.
  • Esta investigación tiene implicaciones para la comprensión de fenómenos que van desde las emulsiones industriales a las interacciones celulares.