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相关概念视频

Time-Domain Interpretation of PD Control01:07

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Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
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Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
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活体体系统中的密度调制通过正交推进控制和感觉延迟来实现.

Ueli Töpfer1, Maximilian R Bailey1, Sanjay Schreiber1

  • 1Department of Materials, ETH Zurich, 8093 Zurich, Switzerland.

ACS nano
|October 27, 2025
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概括

研究人员开发了自适应的Janus微游泳器,可以根据光线和化学物质自主调整速度. 这种感官延迟增强了微游泳者定位,模仿生物系统,用于先进的活性物质应用.

科学领域:

  • 体科学是一种体科学.
  • 活动物质物理学 活动物质物理学
  • 微流体学 微流体学

背景情况:

  • 活性体系统和合成微游泳器的灵感来源于生物对应物.
  • 目前的系统通常需要外部控制以实现适应性运动.
  • 响应环境刺激的自主自我调节是一个关键的挑战.

研究的目的:

  • 开发具有自主自适应推进的Janus微游泳器.
  • 为了研究这些微游泳器对不同照明和化学剂的反应.
  • 探索感官延迟在微游泳者行为和定位中的作用.

主要方法:

  • 斯微粒 (/泰坦尼亚) 的制造.
  • 利用电动力流和诱导电荷电泳来进行推进.
  • 应用均的交流电场和紫外线照明.
  • 引入化学剂 (甲醇) 来改变粒子动态.

主要成果:

  • 詹纳斯微游泳器证明了依赖光的推进速度调节.
  • 泰坦的光导性使得可以在紫外线下自主调节速度.
  • 观察到速度适应的有限感官延迟.
  • 颗粒物显示了度依赖于甲醇的反应时间适应.
关键词:
有活性物质的活性物质.密度调制是一种密度调制.诱导电荷电泳的电泳.正交控制器的正交控制器光导电性的光导性感官延迟是一种感觉延迟.

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  • 由于感官延迟,实现了增强的微游泳者定位.

    • 结论:

    • 发达的微游泳者表现出对环境刺激 (光,化学物质) 的自主适应.
    • 感官延迟增强了局部化,模仿生物微游泳者策略.
    • 新型适应性活性物质系统和微设备的潜力.