灵活的传感器具有零的波桑比率
Xin Huang1, Tianzhao Bu1, Qingyang Zheng1
1Department of Mechanical Engineering, Flexible Electronics Research Center, State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
National science review
|April 5, 2024
概括
新的灵活传感器使用零Poisson.
科学领域:
- 材料科学 材料科学 材料科学
- 机器人技术 机器人技术 机器人技术
- 机械工程 机械工程
背景情况:
- 灵活的传感器在独立的多轴应变测量方面遇到了困难.
- 由双轴力造成的复杂变形带来了重大挑战.
研究的目的:
- 开发能够独立检测双轴刺激的灵活传感器.
- 利用具有零波桑比率 (ZPR) 的超材料膜来提高传感能力.
主要方法:
- 设计具有可调节的波桑比率的元材料膜,包括零波桑比率 (ZPR).
- 通过几何和排列参数设计调节弹性体膜特性.
- 集成ZPR传感器与机器人操纵器和软机器人.
主要成果:
- ZPR传感器实现了对双轴刺激的独立检测.
- 传感器准确监测抓取力,不受表面曲率的影响.
- ZPR传感器精确地区分操纵器状态,并检测软机器人的运动.
结论:
- 基于元材料的ZPR传感器为独立的双轴传感提供了一种新的策略.
- 这项技术使机器人能够更安全地操纵微妙的物体.
- 潜在的应用包括先进的医疗保健,人机接口和机器人触觉传感.
相关概念视频
01:23Poisson's Ratio
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Poisson's ratio is a material property that indicates their stress response. It explains the connection between the elongation or compression a material undergoes in the direction of an applied force and the contraction or expansion it experiences perpendicular to that force. When a slender bar is loaded axially, it stretches in the direction of the force and contracts laterally. Poisson's ratio is the negative ratio of this lateral contraction to the axial elongation. The negative sign...
402
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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