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相关概念视频

Measurements of Strain01:27

Measurements of Strain

761
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
761
Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

215
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
215

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相关实验视频

Updated: Jun 28, 2025

Production of a Strain-Measuring Device with an Improved 3D Printer
06:17

Production of a Strain-Measuring Device with an Improved 3D Printer

Published on: January 30, 2020

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一个太赫兹元传感器阵列用于二维菌株映射.

Xueguang Lu1, Feilong Zhang2,3, Liguo Zhu4

  • 1College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, Sichuan, China.

Nature communications
|April 11, 2024
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种灵活的元传感器阵列,使用太赫兹 (THz) 信号来准确检测应变方向和大小. 这种可穿戴技术为高级应用提供了高分辨率和大面积检测.

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相关实验视频

Last Updated: Jun 28, 2025

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06:17

Production of a Strain-Measuring Device with an Improved 3D Printer

Published on: January 30, 2020

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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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科学领域:

  • 超材料是指一种超材料.
  • 传感器 传感器 传感器
  • 特拉赫兹 (THz) 技术技术

背景情况:

  • 大规模可拉伸式应变传感器阵列对于可穿戴设备和物联网至关重要.
  • 现有的传感器在准确的方向识别和平衡分辨率与区域覆盖面积方面面临着挑战.

研究的目的:

  • 开发一款灵活的元传感器阵列,用于精确检测应变方向和大小.
  • 克服当前应变传感技术的局限性.

主要方法:

  • 在传感器设计中使用经典的Mie共振原理.
  • 采用动态传输的太赫兹 (THz) 信号用于菌株参考.
  • 建立共振频率和应变水平之间的相关性.

主要成果:

  • 超传感器阵列准确地检测到平面内应变的方向和大小.
  • 通过微模板辅助组装实现了超高的传感器密度 (~11.1 cm-2).
  • 已证明可扩展到创纪录的尺寸 (110 × 130 mm2).

结论:

  • 开发的元传感器阵列为准确,大规模的菌株映射提供了有前途的解决方案.
  • 该技术显示了在可穿戴电子产品和其它领域的真实应用的潜力.