论文标题
通过机械延迟线进行放大的实验研究
Experimental investigation of amplification, via a mechanical delay-line, in a rainbow-based metasurface for energy harvesting
论文作者
论文摘要
我们证明了一个基于彩虹的跨表面是由连接到弹性光束上的一系列共振杆创建的，它通过减慢表面弹性波来利用与共振的波浪相互作用，作为机械延迟线的作用。实验表明，彩虹效应降低了宿主结构中传播波的幅度。同时，它大大增加了波和谐振器之间的相互作用周期，以及赋予收割机的杆中的波场振幅。因此，随着时间的流逝，增加的能量被馈入谐振器，我们显示了该系统的能量收集能力增强。
We demonstrate that a rainbow-based metasurface, created by a graded array of resonant rods attached to an elastic beam, operates as a mechanical delay-line by slowing down surface elastic waves to take advantage of wave interaction with resonance. Experiments demonstrate that the rainbow effect reduces the amplitude of the propagating wave in the host structure. At the same time it dramatically increases both the period of interaction between the waves and the resonators, and the wavefield amplitude in the rod endowed with the harvester. Increased energy is thus fed into the resonators over time, we show the enhanced energy harvesting capabilities of this system.
