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    科学领域:

    • 材料科学 材料科学 材料科学
    • 电气工程 电气工程
    • 传感器技术 传感器技术

    背景情况:

    • 开发用于复杂环境的准确和强大的应变传感器至关重要.
    • 现有的传感器往往会受到温度交叉敏感的影响,从而限制了它们的应用.
    • 频率选择性表面 (FSS) 为新型传感器设计提供了潜力.

    研究的目的:

    • 设计和制造使用灵活的频率选择面 (FSS) 的双轴应变传感器.
    • 为了实现两个维度的独立应变检测,具有最小的温度交叉灵敏度.
    • 在应变灵敏度和温度漂移方面评估传感器的性能.

    主要方法:

    • 在柔性聚合物基板上使用光刻法,湿蚀刻和激光切割制造FSS传感器.
    • 在不同温度 (20-100°C) 下测试传感器的共振频率响应.
    • 进行拉伸试验,以评估线性弹性关系和应变灵敏度.

    主要成果:

    • 在20-100°C的温度范围内,FSS传感器显示出0.46%的低相对共振频率变化.
    • 观察到应力和应变之间的线性弹性关系高达66.6%的应变.
    • 对于0.5-3毫米之间的拉伸位移,实现了700MHz/mm的高应变灵敏度.

    结论:

    • 开发的FSS传感器具有很高的应变灵敏度和极好的耐温漂移性.
    • 传感器独立检测双轴应变的能力使其适用于苛刻的应用.
    • 这种灵活的FSS传感器在多样化和具有挑战性的环境中对应变监测具有显著的实用价值.