在一维周期基板上的条形和泡形成系统中,以旋转驱动器的形式进行定向锁定和歇斯底里
C Reichhardt1, C J O Reichhardt1
1Los Alamos National Laboratory, Theoretical Division and Center for Nonlinear Studies, Los Alamos, New Mexico 87545, USA.
Physical review. E
|June 19, 2025
概括
我们研究了条纹,泡和晶体图案在旋转的基板上如何表现. 条纹显示强烈的定向锁定和歇斯底里,而水晶和气泡显示较弱的锁定和较少的歇斯底里.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 软物质物理学 软物质物理学
- 统计力学 统计力学
背景情况:
- 了解驱动系统中的模式形成和动态至关重要.
- 周期基板显著影响相互作用粒子系统的行为.
- 定向锁定和歇斯底里是驱动凝聚物质系统中的关键现象.
研究的目的:
- 在1D基板上的2D系统中研究条纹,泡和晶体相的动态.
- 分析旋转应用驱动对模式定向和转换的影响.
- 描述这些驱动系统中歇斯底里的发生和程度.
主要方法:
- 模拟一个二维系统的相互作用的粒子形成条纹,泡和晶体阶段.
- 应用一个周期性的一维基底.
- 引入一个外部驱动器,与基板的周期性相比旋转.
主要成果:
- 条形相表现出强烈的方向锁定到基板的x方向在过渡到驱动平行运动之前.
- 解锁过渡可以导致条纹断裂和重组,导致歇斯底里.
- 不同类型的晶体和泡相表现出较弱的定向锁定和降低的歇斯底里.
- 歇斯底里斯与粒子重新排列有关,特别突出在条纹阶段.
- 新的动态模式随着基质特性和粒子密度的变化而出现.
结论:
- 该系统显示了丰富的动态行为,包括由于定向锁定和解锁导致的条纹阶段的明显歇斯底里.
- 驱动器,基板和粒子相互作用之间的相互作用决定了观察到的模式形态和过渡.
- 这项研究揭示了带有周期性钉钉的驱动软物质系统中的复杂模式形成和相变.
相关概念视频
01:17Dynamics Of Circular Motion: Applications
7.8K
Suppose a car moves on flat ground and turns to the left. The centripetal force causing the car to turn in a circular path is due to friction between the tires and the road. For this, a minimum coefficient of friction is needed, or the car will move in a larger-radius curve and leave the roadway. Let's now consider banked curves, where the slope of the road helps in negotiating the curve. The greater the angle of the curve, the faster one can take the curve. It is common for race tracks for...
7.8K
01:30Support Reactions
1.9K
A coplanar force system refers to a set of forces that all lie in the same plane and are subject to different reactions between the point of contact and the supports. Understanding how different types of supports affect coplanar forces is crucial for designing safe and reliable structures that can withstand external loads.
The purpose of the supports is to prevent the translational motion of the system by applying an equal and opposite force and to prevent the system's rotation by applying...
The purpose of the supports is to prevent the translational motion of the system by applying an equal and opposite force and to prevent the system's rotation by applying...
1.9K
01:16Self-Locking Screw
2.9K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.9K
01:24One-Degree-of-Freedom System
1.0K
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
1.0K
01:26Rotational Motion about a Fixed Axis
1.9K
A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
1.9K
01:20Plastic Deformation in Circular Shafts
628
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
628