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関連する概念動画

Types of Damping01:20

Types of Damping

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If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
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Damped Oscillations01:07

Damped Oscillations

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In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
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Standing Waves in a Cavity01:28

Standing Waves in a Cavity

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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:
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Mechanical Systems01:22

Mechanical Systems

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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...
339
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

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Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the...
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Sound Waves: Interference00:53

Sound Waves: Interference

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Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
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Updated: Oct 11, 2025

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

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オプトメカニカル分散ソリトン

Jing Zhang1,2, Bo Peng1, Seunghwi Kim3

  • 1Department of Electrical and Systems Engineering, Washington University, St. Louis, MO, USA.

Nature
|December 2, 2021
PubMed
まとめ
この要約は機械生成です。

研究者は 機械的なマイクロソリトンを観測しました 微小リゾーナーで安定した波のパケットを 刺激された光学場によって観測しました これはソリトン生成を新しいスペクトルウィンドウに拡張し,新しい光学機械技術を可能にします.

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Last Updated: Oct 11, 2025

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
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科学分野:

  • 非線形物理学
  • オプトメカニクス
  • 波の現象

背景:

  • ソリトンは,非線形波-物質相互作用から生じる安定した波現象であり,通信や計測学の応用がある.
  • マイクロカビエーションのカール光学ソリトンは,チップスケールのプラットフォームで周波数を生成します.
  • カビティ・オプトメカニクスは 周波数変換と量子システムのインタフェースを可能にします

研究 の 目的:

  • オプトメカニカルマイクロレゾナーで 機械的なマイクロソリトンの観測を報告する.
  • オプトメカニカルカップリングを使用して,新しいスペクトルウィンドウにソリトン生成を拡張します.
  • オプトメカニカル技術の新しい道を探求する.

主な方法:

  • オプトメカニカルマイクロレゾナーで光学場を用いた機械的マイクロソリトンの刺激.
  • オプトメカニカルコップリングを使用して,囁きギャラリーモードの共鳴器で回転する光学フィールドを介して機械的非線形性を誘発します.
  • オプトメカニカル非線形性をバランスさせ,フォノン獲得で機械的損失を補償することによって,安定した機械的ソリトンを達成する.

主要な成果:

  • 光学フィールドによって駆動される機械的マイクロソリトンの観測.
  • 伝播メカニカルモードの時間変化の周期的な変調を実証し,適合したモダル分散を生成する.
  • 安定した局所的な機械波パケット (ソリトン) の条件の確立.

結論:

  • 光学場刺激による機械的マイクロソリトンの実現は,ソリトンの生成を新しいスペクトル領域に拡張する.
  • この研究は,光機械技術の新たな可能性を開きます.
  • 潜在的応用には,音響センサー,情報処理,エネルギー貯蔵,通信,表面音波技術が含まれます.