Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/34644
Title: Metamaterials for sensing and slow light applications
Authors: CHIAM SHER-YI
Keywords: metamaterials,EIT,sensing,fabrication,THz,PBW
Issue Date: 20-Jan-2012
Source: CHIAM SHER-YI (2012-01-20). Metamaterials for sensing and slow light applications. ScholarBank@NUS Repository.
Abstract: This work investigated two novel aspects of metamaterials in the technologically relevant THz regime. First, we fabricated high aspect ratio split ring resonators (HAS-SRRs) using proton beam writing, a lithography technique capable of fabricating highly orthogonal microstructures with heights in the ten-micrometer range. We demonstrated experimentally that HAS-SRRs offered considerable advantages for sensing applications. HAS-SRRs offer increased frequency shifts upon a change in their dielectric environments, thereby improving sensitivity. Secondly, we fabricated, characterized and analyzed a new metamaterial design whose spectral properties demonstrated an analogue to the quantum phenomena of Electromagnetically Induced Transparency (EIT). Prior to our work, metamaterial analogues to EIT had been experimentally demonstrated only very recently. Unlike previous experimental work, our design coupled two resonances both of which are independently excitable by the external field. This work extended the range of metamaterial designs which can be exploited for slow light applications.
URI: http://scholarbank.nus.edu.sg/handle/10635/34644
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