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関連する概念動画

Forced Oscillations01:06

Forced Oscillations

When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
Concept of Resonance and its Characteristics01:19

Concept of Resonance and its Characteristics

If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not immune...
Sound Waves: Resonance01:14

Sound Waves: Resonance

Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Mechanical Systems01:22

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...

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関連する実験動画

Updated: Jun 11, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

メソスコプ的電気反作用によって駆動されるマクロスコプ的機械的共振器.

Joel Stettenheim1, Madhu Thalakulam, Feng Pan

  • 1Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA.

Nature
|July 3, 2010
PubMed
まとめ
この要約は機械生成です。

量子トンネリング電子は,マクロスコープの結晶の振動を引き起こします. この研究は,電子輸送における顕微鏡の量子変動が,大規模な機械的振動器の動きを駆動し,マクロスコープの量子効果を証明する方法を明らかにしています.

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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

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Last Updated: Jun 11, 2026

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Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

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科学分野:

  • 量子力学は,量子力学という
  • メソスコープ物理学のメソスコープ物理学
  • ナノメカニクス ナノメカニクス

背景:

  • 機械的および光学/電気的自由度を持つカップリングされたシステムは,複雑なダイナミクスを示します.
  • マクロスコープの量子現象は,古典的-量子的移行の洞察を提供します.
  • 機械的振動器に対する電子とフォトンの反作用は,運動 (冷却/増幅) に影響を与える可能性があります.

研究 の 目的:

  • 機械的共振器における電子トンネルのメソスコピック反作用を調査する.
  • 電子輸送における量子行動のマクロスコーピック顕現を実証する.
  • 機械的振動器と結合した検出器の騒音に対するフィードバック効果を探求する.

主な方法:

  • 機械的振動を検出するために,騒音測定を用いた.
  • 電子トンネリングのための使用された電波周波数量子点コンタクト.
  • 炭素ナノチューブナノメカニカル共振器を研究した.

主要な成果:

  • 電子トンネリングによって引き起こされる宿主結晶の振動を観測した.
  • トンネリング電子の統計的変動が結晶の動きを決定することを示した.
  • 顕微鏡の量子行動の顕微鏡の顕微鏡の表れを示した.

結論:

  • トンネリング電子のメソスコプ的反作用は,マクロスコプ的機械的運動を誘導することができる.
  • この現象は,量子輸送と機械システムの相互作用を強調しています.
  • この研究は,マクロスコープの物体における量子効果を調査するためのユニークなプラットフォームを提供します.