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相关概念视频

Electro-mechanical Systems01:19

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...

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相关实验视频

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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

高性能石墨烯氧化物机电执行器

Geoffrey W Rogers1, Jefferson Z Liu

  • 1Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia. geoff.rogers@monash.edu

Journal of the American Chemical Society
|December 14, 2011
PubMed
概括

氧化石墨烯 (GO) 在电刺激下表现出显著的应变,使其在未来的执行器中具有潜在的应用. 它独特的结构变化允许实质性的可逆和不可逆应变,非常适合低功率切换.

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 计算物理 计算物理

背景情况:

  • 联碳纳米材料作为先进的执行器具有前景.
  • 优化这些纳米材料的配置对于实现它们的全部潜力至关重要.

研究的目的:

  • 研究石墨烯氧化物 (GO) 作为潜在的机电执行器材料.
  • 为了检查电荷注入对GO原子和结构配置的影响.

主要方法:

  • 使用了第一原则密度函数计算.
  • 模拟的重点是紧和解锁的GO配置.

主要成果:

  • 在GO中注射孔预测高可逆性 (6.3%) 和不可逆性 (28.2%) 菌株.
  • 结构性过渡从紧到没有拉链的GO解释了巨大的不可逆转应变.
  • 在刺激后可以达到稳定的23.8%的应变,适合切换应用.
  • 电子注入诱导了由于调制的波纹效应而在未拉链的GO中产生独特的收缩.
  • 总体而言,GO证明了可逆应变率>5%和应力>100 GPa.

结论:

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  • 石墨烯氧化物是微/纳米电机系统执行器的一个非常有前途的材料.
  • 它独特的机电反应和抗应变能力有利于低功耗应用.