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関連する概念動画

Velocity of an Object01:18

Velocity of an Object

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Understanding how an object moves along a path requires distinguishing between motion over a time span and motion at a precise moment. A useful example is a vehicle traveling along a straight and level path, where its position at any given time is known. The initial step in analyzing this motion is to measure how far the vehicle travels over a fixed time period. This measurement, called average velocity, is computed by dividing the total change in position by the duration over which the change...
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Sequence Networks of Rotating Machines01:24

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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
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Machines01:19

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
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Updated: Feb 15, 2026

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分子機械:ナノモーターは微小物体を回転させます.

Rienk Eelkema1, Michael M Pollard, Javier Vicario

  • 1Department of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, 9747 AG Groningen, The Netherlands.

Nature
|March 10, 2006
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まとめ
この要約は機械生成です。

未来のナノマシンには,小さなモーターが必要です. 科学者たちは,液晶の表面を再編成することによって大きな物体を回転させ,制御された動きを可能にする光駆動分子モーターを開発しました.

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科学分野:

  • 分子工学は分子工学である.
  • マテリアルサイエンス 材料科学
  • ナノテクノロジー ナノテクノロジー

背景:

  • 将来のナノマシンは,仕事を遂行し,より大きなオブジェクトの集団運動を誘導できる分子規模のモーターを必要とします.
  • 顕微鏡構造と相互作用し,操作できる合成モーターの開発は,ナノテクノロジーの主要な課題です.

研究 の 目的:

  • 合成の光駆動分子モーターを設計し,実証し,それ自身よりもはるかに大きな物体を回転させることができる.
  • 分子運動活動がマクロのオブジェクト操作に変換されるメカニズムを調査する.

主な方法:

  • 合成光駆動分子モーターの製造.
  • 分子モーターを液晶膜の中に埋め込む.
  • モーターが液晶表面の浮き彫りに与える影響と,ミリメートル未満の粒子の回転を観察する.

主要な成果:

  • 分子モーターは,自分の大きさを1万倍上回る物体を成功裏に回転させました.
  • モーターの形状の変化は,液晶膜とその表面の浮き彫りの重要な回転再編成を引き起こしました.
  • この表面の再編成は,最終的にフィルム上に置かれたサブミリメートルの粒子の回転につながった.

結論:

  • 合成の光駆動分子モーターは,マクロスコープの動きを効果的に誘導することができます.
  • 分子モーターと液晶膜の相互作用は,ナノスケールからマイクロスケールへのアクチュエーションに有効な経路を提供します.
  • この研究は,より大きな構造物の制御された操作を行うことができる高度なナノマシンを開発するための基礎を築いています.