Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Entropy

Entropy

Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...

Entropy

Entropy

The first law of thermodynamics is quantitatively formulated via an equation relating the internal energy of a system, the heat exchanged by it, and the work done on it. A quantitative formulation of the second law of thermodynamics leads to defining a state function, the entropy.
When an ideal gas expands isothermally, the disorder in the gas increases. From the molecular perspective, the gas molecules have more volume to move around in.
Consider an infinitesimal step in the expansion, which...

Third Law of Thermodynamics

Third Law of Thermodynamics

A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.

Entropy and Solvation

Entropy and Solvation

The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...

The Colloidal State

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...

Entropy and the Second Law of Thermodynamics

Entropy and the Second Law of Thermodynamics

The second law of thermodynamics can be stated quantitatively using the concept of entropy. Entropy is the measure of disorder of the system.
The relation between entropy and disorder can be illustrated with the example of the phase change of ice to water. In ice, the molecules are located at specific sites giving a solid state, whereas, in a liquid form, these molecules are much freer to move. The molecular arrangement has therefore become more randomized. Although the change in average...

También podría leer

Artículos Relacionados

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

Ordenar por

Same author

Seeding and controlling colloidal self-assembly through focused ion beam deposition.

The Journal of chemical physics·2026

Same author

Optical Properties of Microgeodes: Microcapsules Containing Silicon Nanowires.

ACS applied materials & interfaces·2025

Same author

Extracellular uncoating of bacteriophage MS2.

Journal of molecular biology·2025

Same author

Measuring intramolecular connectivity in long RNA molecules using two-dimensional DNA patch-probe arrays.

Nucleic acids research·2025

Same author

Colloidal Crystallization on Cones.

Physical review letters·2025

Same author

Disassembly of Virus-Like Particles and the Stabilizing Role of the Nucleic Acid Cargo.

The journal of physical chemistry. B·2025

Search research articles

Video Experimental Relacionado

Updated: Apr 4, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

COLLOIDS. ¿Qué es eso? Materia coloidal: empaque, geometría y entropía

Vinothan N Manoharan¹

¹Harvard John A. Paulson School of Engineering and Applied Sciences and Department of Physics, Harvard University, Cambridge, MA 02138, USA. vnm@seas.harvard.edu.

Science (New York, N.Y.)

|August 29, 2015

Resumen

Las partículas coloidales, como los átomos, forman fases complejas. Su comportamiento colectivo, influenciado por la forma y la geometría, revela cómo la entropía impulsa la organización y la dinámica de la materia.

Más Videos Relacionados

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Videos de Experimentos Relacionados

Last Updated: Apr 4, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Área de la Ciencia:

Física de la materia blanda
Ciencias de los materiales
Mecánica estadística

Sus antecedentes:

Las partículas coloidales sirven como sistemas modelo para estudiar la autoorganización.
Estas partículas exhiben comportamientos colectivos análogos a los átomos pero con complejidades únicas.
Su comportamiento está influenciado por factores geométricos y topológicos.

Objetivo del estudio:

Para explorar cómo se organiza la materia utilizando partículas coloidales como un sistema modelo.
Investigar el papel de las restricciones geométricas en el comportamiento de las partículas.
Comprender la influencia de la entropía en la estructura y la dinámica de la materia.

Principales métodos:

Utilizando partículas coloidales con formas e interacciones controladas.
Aplicando conceptos geométricos, como el embalaje, para analizar el comportamiento de las partículas.
Investigar los efectos de las interacciones entre partículas de corto alcance.

Principales resultados:

Las partículas coloidales forman fases masivas como líquidos y cristales.
Las restricciones geométricas y topológicas afectan significativamente el comportamiento colectivo de las partículas.
El papel de la entropía en la estructura de la materia y la dinámica de formación se aclara a través de una lente geométrica.

Conclusiones:

Los sistemas coloidales son valiosos para comprender los principios fundamentales de la autoorganización.
Los puntos de vista geométricos proporcionan información sobre la formación de la materia impulsada por la entropía.
El estudio destaca comportamientos colectivos únicos no observados a escala atómica.