相关实验视频
Updated: Jan 17, 2026
06:17
Production of a Strain-Measuring Device with an Improved 3D Printer
Published on: January 30, 2020
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概括
我们研究了光如何反射于来检测超高速应变波. 检测频率取决于光线.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 光学计量学 在光学计量学
背景情况:
- 超快速应变波对半导体计量学至关重要.
- 了解波长依赖于这些波的光学反应至关重要,但对于许多材料来说通常是未知的.
- (Ru) 是一种在先进电子领域具有潜在应用的材料.
研究的目的:
- 为了研究压力波诱导的薄薄的层反射率的变化.
- 为了确定鲁对超高速应变波的波长依赖的光学反应.
- 为了确定探头波长和可检测的应变波频率之间的关系.
主要方法:
- 利用超快的光谱仪探测一个30纳米的层.
- 在波长范围为475nm至1000nm的反射变化进行测量.
- 分析了应变波诱导的光学反应的光谱特征.
主要成果:
- 最大可检测的应变波频率与探测器波长的光学透深度成反比例.
- 反射变化的峰值频率从80 GHz转移到300 GHz,因为探头波长从1000 nm减少到560 nm.
- 观察到一些意想不到的情况,在某些探头波长的最大值以下,特定的应变波频率无法检测到.
结论:
- 在中光学检测超快应变波的速度强烈取决于探测器的波长.
- 检测波长和对应变波的光学响应的大小之间没有直接的相关性.
- 这些发现对于优化半导体应用的光学计量技术至关重要.
相关概念视频
01:27Measurements of Strain
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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...
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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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