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|Title:||Tunable resonance enhancement of multi-layer terahertz metamaterials fabricated by parallel laser micro-lens array lithography on flexible substrates|
|Citation:||Chen, Z.C., Han, N.R., Pan, Z.Y., Gong, Y.D., Chong, T.C., Hong, M.H. (2011-06-01). Tunable resonance enhancement of multi-layer terahertz metamaterials fabricated by parallel laser micro-lens array lithography on flexible substrates. Optical Materials Express 1 (2) : 151-157. ScholarBank@NUS Repository. https://doi.org/10.1364/OME.1.000151|
|Abstract:||Large-area split ring resonators (SRRs) array is fabricated by laser micro-lens array (MLA) lithography on flexible Polyethylene Naphthalate (PEN) substrates. Multi-layer metamaterials are formed by stacking and bonding several layers of the laser fabricated metamaterials together. The resonance of the multi-layer metamaterials is enhanced significantly as compared to the single-layer metamaterials. The roll-off value of the half-wavelength resonant dip, which reflects the strength of resonance, increases significantly from 4.9 to 11.2 as the layer number increases from 1 to 5. A logarithm relationship between the amplitude of the resonant dip and the layer number is also studied, which indicates a flexible method to tune the strength of resonance by changing the layer number. The multi-layer metamaterials with the enhanced resonance can be used to make narrow band terahertz filters. © 2011 Optical Society of America.|
|Source Title:||Optical Materials Express|
|Appears in Collections:||Staff Publications|
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