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相关概念视频

Magnetic Damping01:17

Magnetic Damping

1.0K
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
1.0K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

766
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
766
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.5K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.5K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

4.5K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
4.5K
Magnetic Fields01:27

Magnetic Fields

7.1K
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...
7.1K
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

2.1K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
2.1K

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相关实验视频

Updated: Jan 16, 2026

Magnet Assisted Composite Manufacturing: A Flexible New Technique for Achieving High Consolidation Pressure in Vacuum Bag/Lay-Up Processes
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Magnet Assisted Composite Manufacturing: A Flexible New Technique for Achieving High Consolidation Pressure in Vacuum Bag/Lay-Up Processes

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使用磁性复合材料进行阻塞.

Buse Aktaş1,2, Minsoo Kim3, Marc Bäckert4

  • 1Multi-Scale Robotics Laboratory, Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, Switzerland. buse.aktas@is.mpg.de.

Nature communications
|September 30, 2025
PubMed
概括
此摘要是机器生成的。

研究人员使用软铁磁复合材料中的磁相互作用开发了一种新的无干扰机制. 这一突破使可编程,自适应的无机器人结构成为可能,提供了增强的重新配置和可扩展性.

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Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
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Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
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科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 材料科学 材料科学 材料科学
  • 软物质物理学 软物质物理学

背景情况:

  • 干扰过渡为适应性结构提供可编程的机械性能.
  • 目前的干扰激活方法 (例如真空) 是绑定的,限制了应用.
  • 需要开放式干扰机制,以提高机器人系统的灵活性.

研究的目的:

  • 引入使用磁相互作用的新型无绳干扰机制.
  • 开发用于可编程干扰的软铁磁复合材料.
  • 展示和建模这些复合材料的磁力机械行为.

主要方法:

  • 设计软铁磁复合材料,具有可编程磁化.
  • 使用外部磁场来控制干扰.
  • 模拟了干扰复合材料的磁力机械行为.

主要成果:

  • 证明了线性,平面和体积干扰和形状锁定.
  • 成功编程复合材料磁化用于可控干扰.
  • 为可调节的干扰行为建立了设计原则.

结论:

  • 磁相互作用提供了一个有效的无线干扰机制.
  • 可调节的干扰允许在飞行时控制材料属性.
  • 这种方法推动了可重新配置和可扩展的机器人结构的开发.