Video Experimental Relacionado
Updated: Sep 10, 2025
07:56
Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
Published on: September 20, 2017
11.8K
Orden Nemático de la Sincronización de Fase de las Oscilaciones de Forma
Ioannis Hadjifrangiskou1, Sumesh P Thampi1,2, Rahil N Valani1
1University of Oxford, Rudolf Peierls Centre for Theoretical Physics, Oxford OX1 3PU, United Kingdom.
Physical review letters
|August 27, 2025
Resumen
Las partículas deformables en el flujo de corte oscilatorio desarrollan un orden nemático a través de la sincronización de fase. Este estado sincronizado, único para las partículas deformables, ofrece información sobre la reología de la materia blanda y activa.
Área de la Ciencia:
- Física de la materia blanda
- Reología
- Fluidos no newtonianos
Sus antecedentes:
- Comprender la dinámica de las partículas en fluidos complejos es crucial para la materia blanda y activa.
- Los estudios anteriores a menudo se centraban en partículas rígidas, lo que limitaba las ideas sobre los sistemas deformables.
Objetivo del estudio:
- Investigar la aparición del orden nemático en las suspensiones de partículas deformables bajo flujo de corte oscilatorio.
- Para aclarar el papel de la sincronización de fase en este fenómeno de ordenamiento.
Principales métodos:
- Simulación de partículas deformables que no interactúan sometidas a un flujo de corte oscilante.
- Analizando el desarrollo del orden nemático y la sincronización de fase.
- Mapeo de regiones sincronizadas en el espacio de parámetros (amplitud y frecuencia).
Principales resultados:
- El flujo de corte oscilatorio induce el orden nemático en las suspensiones de partículas deformables a través de la sincronización de fase.
- Las partículas deformables logran la sincronización mediante la modulación de la relación de aspecto y la velocidad de caída.
- Los estados sincronizados forman ciclos límite estables y aparecen como lenguas de Arnold en el espacio de parámetros.
Conclusiones:
- La sincronización de fase es un mecanismo clave para el ordenamiento nemático en suspensiones de partículas deformables.
- El comportamiento único de las partículas deformables permite esta sincronización.
- Los resultados sugieren la posibilidad de estudios experimentales utilizando flujo de corte oscilatorio con partículas deformables.
Videos de Conceptos Relacionados
01:04Oscillations about an Equilibrium Position
5.6K
Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so...
5.6K
01:07Damped Oscillations
6.0K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
6.0K
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
1.1K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.1K
01:06Forced Oscillations
6.8K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
6.8K
01:30Oscillations In An LC Circuit
2.5K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
2.5K
02:31Phase Transitions
20.2K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
20.2K