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関連する概念動画

Mechanism of Lamellipodia Formation01:31

Mechanism of Lamellipodia Formation

Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

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...
Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

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...
One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
Smooth Muscle Contraction01:25

Smooth Muscle Contraction

Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...

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関連する実験動画

Updated: May 8, 2026

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale
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単一素材の微細構造における自己調節非相互運動

Shucong Li1, Michael M Lerch2,3, James T Waters4

  • 1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.

Nature
|May 4, 2022
PubMed
まとめ

この研究は,自己調節によるのような動きを模倣する単一材料システムを導入します. 先進的なアクチュエータのマイクロ構造に 複雑なプログラム可能な動きを生み出します

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Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Last Updated: May 8, 2026

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科学分野:

  • 材料科学
  • ソフトロボティクス
  • 生物医学工学

背景:

  • 生きたシリアは 生物学的機能のために 複雑で協調的な動きを示します
  • 合成シリアは通常,多素材のデザインを必要とし,動作の複雑性とプログラム性を制限します.
  • 既存の合成シリアは 単一の構造の中で 多様で恣意的な動きを 達成するために苦労します

研究 の 目的:

  • 多様で複雑な非相互運動を生成できる単一の物質のシステムを実証する.
  • これらのダイナミックな動きの背後にある自己規制メカニズムを調査する.
  • 自律的なアクチュエータや ソフトロボティクスや バイオメディカルデバイスの応用を探求する

主な方法:

  • 斜面メソゲン配列の光反応性液晶エラストマーマイクロストを使用した.
  • 静的な光源に物質を晒して 移動する秩序から乱れへの移行フロントを始める
  • 光化学機械的フィードバックメカニズムを捉え,導くために理論的モデルを使用した.

主要な成果:

  • 自律的に移動する光のフロントによって 多様で複雑な ストロークのような軌道を達成します
  • 光の強度や角度などのパラメータを調整することで動作を制御できます.
  • 微細構造の配列の自己組織化変形パターンを示し,結合した微細構造の複雑な動きを示した.

結論:

  • シングルマテリアル・システムは 光化学機械的自己調節によって 複雑な状の動きを実現できます
  • このアプローチは,自律型マルチモダルのアクチュエータを設計するための汎用的なプラットフォームを提供します.
  • この発見はソフトロボティクスや バイオメディカルデバイスや エネルギー伝導に 幅広い意味を持ちます