Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

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
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

1.2K
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
1.2K
Motional Emf01:22

Motional Emf

4.0K
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...
4.0K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

761
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...
761
Ferromagnetism01:31

Ferromagnetism

2.9K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.9K
Magnetic Force01:18

Magnetic Force

1.8K
In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
1.8K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Biportal Endoscopic Foraminotomy with Unilateral Screw Fixation Using a Dynamic Rod for Radiculopathy Due to Osteoporotic Compression Fracture.

Journal of clinical medicine·2026
Same author

Air-permeable hydrogels through viscoelastic phase separation of aerogels.

Nature·2026
Same author

Soil water harvest inspired by desert horned lizards, <i>Phrynosoma platyrhinos</i>.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

<i>Viola</i> seed pod architecture shapes sequential, force-augmented pinching.

Science (New York, N.Y.)·2026
Same author

Boosting ionic conductivity of single-ion conductive polyelectrolyte elastomers via high-dielectric plasticizers.

Nature materials·2026
Same author

A wearable non-invasive sonogenetic pacemaker.

Nature biomedical engineering·2026

関連する実験動画

Updated: Jan 13, 2026

Magnetic Adjustment of Afterload in Engineered Heart Tissues
09:40

Magnetic Adjustment of Afterload in Engineered Heart Tissues

Published on: May 5, 2020

6.2K

増幅アクチュエーションと機械的記憶のための弾性磁気不安定性

Seong-Yu Choi1, Ji-Sung Park2,3, Won Jun Song1

  • 1Departmant of Materials Science and Engineering, Seoul National University, Seoul, Republic of Korea.

Nature communications
|January 10, 2026
PubMed
まとめ

二安定ダイナミクス、運動増幅、機械的記憶を実現する弾性磁気不安定性を開発しました。この不安定性は、機械システムにおけるプログラム可能なソフトアクチュエーションの可能性を提供します。

キーワード:
弾性磁気不安定性ソフトアクチュエーション二安定性運動増幅機械的記憶慣性ヒステリシス

さらに関連する動画

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.2K
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K

関連する実験動画

Last Updated: Jan 13, 2026

Magnetic Adjustment of Afterload in Engineered Heart Tissues
09:40

Magnetic Adjustment of Afterload in Engineered Heart Tissues

Published on: May 5, 2020

6.2K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.2K
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K

科学分野:

  • 機械工学
  • 材料科学
  • 物理学

背景:

  • 機械システムは、運動を増幅する不安定性を示すことがあります。
  • 二安定ダイナミクスは、調整可能な機械的応答を必要とするアプリケーションに不可欠です。
  • 磁気力と弾性力を組み合わせることは、機械システム設計の新しい経路を提供します。

研究 の 目的:

  • 二安定ダイナミクスを作成するための弾性磁気不安定性を導入および実証すること。
  • 連成弾性磁気システムにおける運動、変位、および力の増幅を調査すること。
  • 慣性ヒステリシスを通じた機械的記憶の可能性を探求すること。

主な方法:

  • 連成弾性磁気振動システムの開発。
  • 制御システムに対する弾性磁気システムの比較分析。
  • 磁気力と弾性力の相互作用の体系的な研究。
  • 機械的記憶のための慣性ヒステリシスの調査。

主要な成果:

  • 弾性磁気システムは、広範な周波数範囲で制御システムと比較して、運動の増幅、より大きな変位、およびより高い力を実証しました。
  • 磁気力と弾性力のバランスをとるための設計原理が確立されました。
  • システムは慣性ヒステリシスを示し、調整可能な閾値を持つ揮発性および不揮発性の機械的記憶を可能にしました。

結論:

  • 弾性磁気不安定性は、二安定ダイナミクスと運動増幅を実現するための実行可能なメカニズムを提供します。
  • 開発されたシステムは、その二重の増幅と記憶機能を通じて、プログラム可能で適応性のあるソフトアクチュエーションの可能性を示しています。
  • 確立された設計原理は、さまざまな構成に転用可能であり、弾性磁気不安定性の適用範囲を広げます。