Measurements and calculations of two-dimensional band gap structure composed of narrowly slit tubes

Cui, Zhan You; Chen, Tian Ning; Wu, Jiu Hui; Chen, Hua Ling; Zhang, Bo
October 2008
Applied Physics Letters;10/6/2008, Vol. 93 Issue 14, p144103
Academic Journal
In this letter, large band gap properties of a two-dimensional stop band gap system composed of steel tubes are reported, which are embedded with periodic narrow slits in each half of the annular tube. The band gap with finite thickness samples is experimentally investigated and theoretically calculated. The results show that without enlarging the lattice constant, the starting frequency of the band gap is reduced, and using the periodic narrow slits with multiwidth can enlarge the stop band of this system due to the multicavity resonance.


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