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Updated: May 24, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
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Published on: June 7, 2019

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用于微波诱导的热声成像的被动光束成形元表面

Shuangfeng Tang, Yichao Fu, Yu Wang

    IEEE transactions on bio-medical engineering
    |March 3, 2025
    PubMed
    概括

    一种新型的被动光束形成元表面 (PB-MS) 增强了微波诱导热声成像 (MTAI) 以更深层次的组织可视化. 这一突破改善了信号噪声比和对比度,为先进的临床诊断铺平了道路.

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    相关概念视频

    Standing Waves in a Cavity01:28

    Standing Waves in a Cavity

    A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
    847