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相关概念视频

Magnetic Damping01:17

Magnetic Damping

464
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...
464
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

1.5K
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.
1.5K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

4.9K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
4.9K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.6K
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.
2.6K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

3.6K
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...
3.6K
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

318
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
318

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相关实验视频

Updated: Jul 9, 2025

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
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分裂型磁性软触摸传感器,具有3D力解的3D力解.

Huangzhe Dai1,2, Chengqian Zhang1,3, Chengfeng Pan1,2

  • 1The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.

Advanced materials (Deerfield Beach, Fla.)
|November 28, 2023
PubMed
概括
此摘要是机器生成的。

灵感来自于大自然,一个新的无线磁性软触摸传感器提供高精度的3D力感应. 这种生物传感器增强了机器人在空气和水中的机器人能力,为先进的灵活电子和人机交互铺平了道路.

关键词:
三维力量解3D力量解人工电子皮肤是一种人造电子皮肤.灵活的电子产品灵活的电子产品这是一个磁性磁场.触觉传感器 触觉传感器

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Microfabricated Post-Array-Detectors mPADs: an Approach to Isolate Mechanical Forces
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Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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科学领域:

  • 生物模拟学和材料科学 材料科学
  • 机器人和灵活的电子技术

背景情况:

  • 生物利用多层次的触觉感官器官 (例如,人体皮肤,鱼的侧线) 来进行3D力量感知和保护.
  • 这些自然结构通过分层增强感官特性,使机械接触时能够进行强大的感知.

研究的目的:

  • 为无线3D力感应开发一个分割型磁性软触觉传感器.
  • 以生物感官器官为灵感,实现高精度和脱能力.

主要方法:

  • 软触觉传感器的制造,使用心心磁化装置.
  • 开发用于3D力量感知的理论解模型.
  • 整合一个分割设计,以扩大有效传感距离 (>20毫米).

主要成果:

  • 实现了1.33%的高传感精度,用于3D力.
  • 展示了3D力量解能力,使得近距离感知到人体皮肤,而无需复杂的校准.
  • 在空气和水环境中实现了低偏移 (<1.03%).
  • 成功应用传感器用于精细的机器人操作和基于水流的导航.

结论:

  • 开发的磁性软触摸传感器提供了先进的无线3D力感应,具有高精度和脱.
  • 传感器的性能和分割设计显示了灵活电子,人机交互和生物机器人应用的巨大潜力.
  • 这种仿生方法为下一代触觉传感技术提供了一个强大的平台.