関連する実験動画
Updated: Jul 18, 2026

10:52
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
化学エネルギーによって駆動される反転可能な,片方向の分子回転モーターです
Stephen P Fletcher1, Frédéric Dumur, Michael M Pollard
1Department of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands.
まとめ
科学者たちは化学反応を用いて一方的な回転を実現する合成分子モーターを開発した. この制御された動きは,ナノメートルスケールの機械を構築するための一歩です.
科学分野:
- 分子工学は分子工学である.
- ナノテクノロジー ナノテクノロジー
- 化学合成とは,化学合成というものです.
背景:
- 分子機械の開発には,分子運動の正確な制御が必要です.
- 分子レベルで片方向の回転を達成することは,ナノテクノロジーの重要な課題です.
研究 の 目的:
- 合成分子構造の片方向の回転運動を記述する.
- 化学変換によって動かす分子モーターを実証する.
主な方法:
- フェニルロータとナフチルスタータを備えた合成分子構造の設計.
- ロータを4つの異なるステーションで駆動するために化学反応剤を使用します.
- 構造的な特徴を用いて,ブラウン運動を制限し,方向回転を保証する.
主要な成果:
- 合成分子構造の一方的な回転運動を実証した.
- 特定の化学反応剤を用いて回転方向を制御した.
- ステータルに対するローターのブラウン運動を成功裏に制限しました.
結論:
- 合成分子モーターは,化学エネルギーによって作動する制御された,一方的な回転を示しています.
- この研究は,機能的なナノメートルスケールの機械の創造に向けた基礎的な一歩を表しています.
関連する概念動画
Force On A Current Loop In A Magnetic Field
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
Faraday Disk Dynamo
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...
Back EMF
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 induced.
DC Generator
An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
Electro-mechanical Systems
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...
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...
Sequence Networks of Rotating Machines
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...
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...

