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相关概念视频

Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

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相关实验视频

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低成本, 4 × 4 像素,基于柔性复合材料的热电红外阵列装置.

Qin-Qin Wu, Meng-Meng Chen, Yang Zhao

    Applied optics
    |August 12, 2025
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    概括

    这项研究介绍了一种低成本的火电红外设备,使用P(VDF-TrFE) /PZT复合材料. 绝缘槽有效抑制热交叉声,增强信号强度,改善红外探测.

    科学领域:

    • 材料科学 材料科学 材料科学
    • 红外技术 红外技术
    • 传感器开发 传感器开发

    背景情况:

    • 聚乙烯化物-三乙烯 (P(VDF-TrFE)) 和硫酸 (PZT) 复合材料为传感器应用提供了灵活性,低成本和可扩展性.
    • 热电红外设备对于热成像和检测至关重要,但在阵列配置中遭受热交叉声.

    研究的目的:

    • 为了开发一个低成本的,4x4像素阵列的热电红外装置,使用P(VDF-TrFE) /PZT复合材料.
    • 调查抑制热交叉通话和促进火电红外传感器阵列互连的方法.

    主要方法:

    • 使用P(VDF-TrFE) /PZT复合材料制造一个4x4像素阵列的热电红外装置.
    • 设计和实施风扇式电极,用于使用室温固化银糊进行简化读出电路互连.
    • 结合绝缘槽来物理隔离相邻的传感器单元,并最大限度地减少热交叉声.

    主要成果:

    • 模拟证实,在各种热刺激条件下,绝缘槽有效抑制热交叉声.
    • 制造的设备表明,散热电极简化了与读出电路的互连.
    • 实验测量表明,绝缘槽成功抑制了热交叉声,导致输出信号强度大约增加10%.
    • 该设备在16个传感器单元中实现了4.6x10^7到5.8x10^7cm*Hz^1/2*W^-1的典型检测能力 (D*) 值,其频率为3Hz.

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    结论:

    • 开发的P(VDF-TrFE) / PZT火电红外探测器为红外探测提供了一个具有成本效益的解决方案.
    • 风扇式电极和绝缘槽的集成显著提高了设备性能,通过简化互连和减少热交叉声.
    • 取得的检测值表明了该设备在各种红外传感应用中的潜力.