Please use this identifier to cite or link to this item:
|Title:||Broadband multi-layer terahertz metamaterials fabrication and characterization on flexible substrates|
|Citation:||Han, N.R., Chen, Z.C., Lim, C.S., Ng, B., Hon, M.H. (2011-04-11). Broadband multi-layer terahertz metamaterials fabrication and characterization on flexible substrates. Optics Express 19 (8) : 6990-6998. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.19.006990|
|Abstract:||Microscopic split-ring-resonator (SRR) arrays are fabricated on 100 μm thick polyethylene naphthalate (PEN) films by femtosecond laser micro-lens array (MLA) lithography. The transmission properties of these metamaterials are characterized by THz Time Domain Spectroscopy (THz-TDS). Tunable resonance responses can be achieved by changing SRR structural design parameters. By stacking 2D PEN metamaterial films with different frequency responses together, a broadband THz filter with full width at half maximum (FWHM) of 0.38 THz is constructed. The bandwidth of the resonance response increases up to 4.2 times as compared to the bandwidths of single layer metamaterials. Numerical simulation reveals that SRR layers inside the multi-layer metamaterials are selectively excited towards specific frequencies within the broadband response. Meanwhile, more than one SRR layers respond to the chosen frequencies, resulting in the enhancement of the resonance properties. The multi-layer metamaterials provide a promising way to extend SRR based metamaterial operating region from narrowband to broadband with a tunable feature. © 2011 Optical Society of America.|
|Source Title:||Optics Express|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 24, 2019
WEB OF SCIENCETM
checked on Jan 16, 2019
checked on Jan 12, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.