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Updated: Jul 24, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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超长距离分布式振动传感器基于光的极度向前传输

George Y Chen, Xing Rao, Kuan Liu

    Optics letters
    |November 1, 2023
    PubMed
    概括

    一个新的光纤传感系统使用海底电缆的极化旋转来监测水下振动. 这项技术为早期检测地震活动和潜在海提供了精确的测量.

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    相关概念视频

    IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

    IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

    Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...