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相关概念视频

Magnetism01:30

Magnetism

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Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
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活动磁光金属传感器

Forouzan Habibighahfarokhi, Olga Sergaeva, Costantino De Angelis

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    科学领域:

    • 地元表面光学学
    • 磁光学效应是一种磁光学效应.
    • 纳米光子学 纳米光子学

    背景情况:

    • 超表面提供了新的光学功能.
    • 对活跃光学设备来说,通过外部刺激控制光极化是至关重要的.
    • 由木替代的伊铁石榴石 (BIG) 具有可调节的磁光学特性.

    研究的目的:

    • 为了展示基于BIG纳米磁盘的极化敏感金属.
    • 为了研究光聚焦的磁场调制.
    • 为活跃磁性半导体设备建立一个框架.

    主要方法:

    • 由BIG纳米盘组成的元表面的制造.
    • 全波电磁模拟用于分析设备性能.
    • 在不同的磁场和光极化下评估纳米盘响应,相位形状和聚焦效率.

    主要成果:

    • 巨大的纳米磁盘超表面展示了极化敏感的聚焦.
    • 切换事件循环偏光手动导致了不同的聚焦行为.
    • 模拟证实了磁场调节金属光学响应的能力.

    结论:

    • 使用BIG纳米磁盘实现了一个功能极化敏感金属体.
    • 该设备的光学响应可以通过外部磁场来主动调整.
    • 这项工作为开发磁性控制的活性半导体设备提供了基础.