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関連する概念動画

Motional Emf01:22

Motional Emf

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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...
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Electro-mechanical Systems01:19

Electro-mechanical Systems

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Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.6K
Electromotive Force02:36

Electromotive Force

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Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled  that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc  with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...
29.7K
Electromotive Force01:02

Electromotive Force

5.6K
Electromotive force (emf) is the force that causes current to flow from a higher to a lower  potential. The term "electromotive force" is used for historical reasons, even though emf is not a force at all.
Any circuit with a constant current must contain an emf-producing source. Examples of emf sources include batteries, electric generators, solar cells, thermocouples, and fuel cells. All these sources transform energy of some kind (mechanical, chemical, thermal, and so on)...
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Faraday Disk Dynamo01:23

Faraday Disk Dynamo

3.5K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
3.5K
Back EMF01:24

Back EMF

4.3K
Generators convert mechanical energy into electrical energy, whereas motors convert electrical energy into mechanical energy. A motor works by sending a current through a loop of wire located in a magnetic field. As a result, the magnetic field exerts a torque on the loop. This rotates a shaft, extracting mechanical work from the electrical current sent in initially. When the coil of a motor is turned, magnetic flux changes through the coil, and an emf (consistent with Faraday's law) is...
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Updated: Jan 13, 2026

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
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電磁（EM）駆動機能性材料

Jay Sim1, Lu Lu1, Ruike Renee Zhao1

  • 1Department of Mechanical Engineering, Stanford University, Stanford, CA, USA.

Advanced materials (Deerfield Beach, Fla.)
|January 7, 2026
PubMed
まとめ
この要約は機械生成です。

電磁場は、アクチュエーション、センシング、ワイヤレス電力のための汎用的な機能性材料を可能にする。本レビューは、EM活性システムを探求し、次世代のインテリジェント材料およびデバイスの開発を導く。

キーワード:
ローレンツ力電磁アクチュエーション誘導加熱ソフトロボティクス刺激応答性材料

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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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08:17

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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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科学分野:

  • 材料科学
  • 物理学
  • 工学

背景:

  • 電磁場（EM）は、通信やイメージングなどの技術に不可欠である。
  • 最近の進歩は、ソフトロボティクス、生物医学デバイス、メタマテリアルにおける機能性材料のアクチュエーションにEM場を使用することに焦点を当てている。
  • EM場は、磁力、ローレンツ力、熱効果を含む多様なアクチュエーションメカニズムを提供する。

研究 の 目的:

  • EM活性材料システムの包括的な概要を提供する。
  • EMベースのアクチュエーション、センシング、通信、ワイヤレス電力伝送の進歩を体系的にレビューする。
  • 次世代のEM対応インテリジェント材料およびデバイスの開発ロードマップを確立する。

主な方法:

  • EMベースのアクチュエーション、センシング、通信、電力伝送に関する最近の研究の体系的な整理。
  • 基本原理、実験的実証、設計戦略の強調。
  • 統合されたEM駆動機能、および最適化と機械学習の役割についての議論。

主要な成果:

  • EM場は多機能材料にとって強力で統合的な刺激を提供する。
  • 多様なEMベースのメカニズムが、多様な材料応答を可能にする。
  • 複数のEM駆動機能の統合は、重要な新興トレンドである。

結論:

  • EM活性材料は、さまざまなアプリケーションで大きな可能性を秘めている。
  • 複数のEM機能の統合とAIの活用に関するさらなる研究は、開発を加速できる。
  • 本レビューは、進歩を統合し、インテリジェント材料における将来のイノベーションへの道を開く。