Based on the frequency band gap enjoyed by periodic structures, the present thesis proposes a brand new method of seismic isolation. The concept is to employ periodic foundation to block seismic wave whose frequency falls into the frequency gap.
基于周期结构中存在频率带隙这一特性,本文提出了一种全新的隔震设想,它通过采用周期性基础实现,使得一定频率范围内的地震波不能通过基础,从而达到隔震效果。
参考来源 - 二维周期性结构带隙计算的有限元法·2,447,543篇论文数据，部分数据来源于NoteExpress
This structure can form a wave-guide in photon crystals and light can propagate in it with different selected frequency in photonic band gap with low loss.
该结构在光子晶体中构成光波导，能使光子禁带中不同的被选择的缺陷态频率的光子以极低的损耗通过。
Spontaneous emission can be totally suppressed or strongly enhanced depending on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density.
通过原子上能级与光子频率带隙边缘的相对位置或者光子态密度，可以抑制或增强原子的自发辐射。
By using the plane wave expansion and finite-different time-domain (FDTD) methods, we can find a larger absolute band gap in the low and high frequency.
通过运用平面波展开方法以及有限差分时域(FDTD)方法进行分析，可以明显地发现，在低频和高频区域增大了光子晶体的光子禁带。
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