活性固体の適応運動
Jonas Veenstra1, Colin Scheibner2,3, Martin Brandenbourger1,4
1Institute of Physics, Universiteit van Amsterdam, Amsterdam, The Netherlands.
Nature
|March 13, 2025
まとめ
特殊な弾性を持つ活性固体は 生物学的システムを模倣し 複雑な制御戦略を上回る 適応的運動を可能にします これらの材料は 挑戦的な環境での 自動運転への新しいアプローチを提供します
科学分野:
- 材料科学
- ロボット
- 非線形動力学
背景:
- 微小な構成要素を備えたアクティブシステムは 自律的な機能的な材料を作ることができます
- これらのエネルギー源から有用な機械的な作業を生成することは大きな課題でした.
研究 の 目的:
- アダプティブ・ロコモーションを可能にする 活性固体を設計する
- これらの活性物質の 独特の弾性特性と 発生する振る舞いを探求すること
主な方法:
- 非変動弾性 (奇数モジュール) のセンチメートルスケールの活性固体の開発.
- 粗粒度理論と実験的検証を用いた弾性モジュールの予測
- 環境との相互作用による自発的な形状の変化と移動の分析
主要な成果:
- アクティブ・ソリッドは 転がったり 爬行したりする 形状の変化の限界サイクルを示します
- 材料と環境との間のフィードバックループが生まれることで 動きが安定しています
- 性能は加速と歩行調整における 神経ネットワークのような複雑な制御戦略に 匹敵します
結論:
- 物質科学とロボット科学の橋渡し役を 果たしています
- 分散型戦略は,生物学的システム,柔らかい材料,ナモメカニカルデバイスの非線形動態を制御することができます.
- この研究は新しい自律的な機能的材料への道を切り開きます
関連する概念動画
01:22Planar Rigid-Body Motion
369
Understanding the movement of a rigid body in planar motion involves recognizing that every particle within this body is traversing a path that maintains a consistent distance from a specific plane. This concept is fundamental in the study of physics and mechanical engineering, and it allows us to comprehend better how objects move in space.
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
369
01:10Relative Motion Analysis - Acceleration
319
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
319
01:21Rigid Body Equilibrium Problems - II
6.9K
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
6.9K
00:49Rigid Body Equilibrium Problems - I
4.3K
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
4.3K
01:24Absolute Motion Analysis- General Plane Motion
199
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
199
01:11Buoyancy and Stability for Submerged and Floating Bodies
1.1K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
1.1K