在微纳米石墨片的磁控运动的关键影响因素
Youlin Gao1,2, Junsong Wang2,3, Mianke Chen1,2
1Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, People's Republic of China.
Nanotechnology
|June 11, 2024
概括
磁控微纳米石墨片 (MGFs) 的运动是通过了解主导的驱动力 (BB) 和片面比来实现的. 这项研究开发了一个动态模型来预测MGF翻转动态.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 纳米技术 纳米技术
背景情况:
- 磁控微型和纳米材料提供非接触式,远程和非破坏性操纵.
- 对于先进的应用来说,了解这项运动的基本原则至关重要.
研究的目的:
- 研究影响微纳米石墨片 (MGF) 磁控运动的关键因素.
- 开发和验证一个动态模型来预测MGF在磁场激发下翻转行为.
主要方法:
- 使用了一种配有电磁体的光学显微镜进行 *in-situ* 显微镜监测.
- 进行了定量比较实验,以确定磁场参数,材料特性和运动之间的关系.
- 开发了一种包含形状因子的动态模型来描述二磁片翻转.
主要成果:
- 确定磁场强度和梯度 (BB) 的乘积为主导的驱动力.
- 确定翻转方向由向量交叉乘积B×B.
- 揭示了值驱动力和MGF视角比 (b/a) 之间的指数关系.
- 发现临界磁驱动力与溶剂粘度成正比.
- 开发的动态模型准确地预测了碎片翻转动态.
- 在MGF翻转中观察到延迟,多个周期加速和疲劳效应.
结论:
- 该研究阐明了磁控MGF运动的关键参数和动态.
- 开发的模型为操纵微纳米材料提供了一个预测工具.
- 这些发现使得使用磁场对材料的宏观结构和功能进行了精确的控制.
相关概念视频
Magnetic Fields
6.0K
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
A magnetic field is defined by the force that a charged particle experiences...
6.0K
Motional Emf
3.2K
Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
3.2K
Mechanism of Ciliary Motion
3.6K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
3.6K
Motion Of A Charged Particle In A Magnetic Field
4.7K
A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
4.7K
π Electron Effects on Chemical Shift: Overview
1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.1K
Magnetic Field due to Moving Charges
8.6K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
8.6K


