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Learn how to analyze time-varying metal-based metamaterials with a Floquet-Bloch modal expansion and an equivalent circuit model. Compare with numerical FDTD simulations.
1 de ene. de 2015 · Another diffraction phenomenon, which is similar to harmonic diffraction, is called sub- harmonic diffraction and has been recently studied by Liu and Declercq (2014). Backward displacement of the reflected wave is also an interesting phenomenon related to the interaction of incident sound with periodic structures.
Every one of us knows what diffraction is. It is the bending of light around the corner of an obstacle. Reflected light produces fridges of light, dark or colored bands. At times diffraction of sunlight in clouds produces a multitude of colors. Example of diffraction in nature is diamond rays in the solar eclipse.
5 de oct. de 2022 · 回折現象は波が衝立の隙間に入った際に起こる現象で、波長が隙間の大きさより小さくなればなるほど受ける影響が大きくなります。. カメラの世界においては光(波)とレンズの絞り(衝立)がこれにあたり、絞りの大きさ(隙間)が極端に小さくなると写真が ...
6 de nov. de 2016 · We shall limit our mathematical description of interference and diffraction phenomena to the simplest conditions. These, called the Fraunhofer conditions, are implemented by having both the primary light source and the system producing the phenomenon and this system and the observation plane sitting at large distances from each other.
18 de dic. de 2023 · The diffraction phenomenon, which is desperately avoided but still unavoidable in laser extreme manufacturing, was used as a reference for focal spot positioning in this work. The proposed DFSPM relies primarily on the Fraunhofer diffraction pattern on the substrate, which can be achieved at close range with a convergence lens [ 27 ].
Diffraction causes waves to spread out or bend around obstacles, resulting in the phenomenon known as interference. Refraction, on the other hand, causes waves to change direction as they pass through different mediums. Diffraction is more pronounced when the size of the obstacle or aperture is comparable to the wavelength of the waves.
