Tensile deformation uniformity of material has been studied with a stretchable polymer based holographic sensor. The diffraction spectrum distribution of a holographic grating with a large area as a main response parameter is scanned. A linear spatial distribution of peak wavelength provides an important foundation for exploring the tensile uniformity. The same ratio of wavelength to position confirms that the tensile deformation of the material is uniform in a small spot size. Over the entire length of the materials, gradually increasing deformation accumulation is the main uniformity feature of tensile deformation. The uniformity response is expected to apply in sensing the deformation and stress fluctuation distribution in the middle of the thin surface. The non-uniform distribution of stress can be expressed by the nonlinear distribution of the grating diffraction spectrum. The optical measurement of tensile deformation uniformity further validates the applicability of a stretchable polymer based holographic sensor.

中文翻译：

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用基于弹性聚合物的全息传感器表征拉伸变形的空间均匀性

已经使用基于可拉伸聚合物的全息传感器研究了材料的拉伸变形均匀性。扫描了以大面积为主要响应参数的全息光栅的衍射光谱分布。峰值波长的线性空间分布为探索拉伸均匀性提供了重要基础。相同的波长与位置比证实了材料在小光斑尺寸内的拉伸变形是均匀的。在材料的整个长度上，逐渐增加的变形积累是拉伸变形的主要均匀特征。均匀响应有望应用于检测薄表面中间的变形和应力波动分布。应力的非均匀分布可以用光栅衍射光谱的非线性分布来表示。拉伸变形均匀性的光学测量进一步验证了基于可拉伸聚合物的全息传感器的适用性。