@article { , title = {Directive emission of red conjugated polymer embedded within zero index metamaterials}, abstract = {Abstract: We numerically demonstrate an impedance-matched multilayer stacked fishnet metamaterial that has zero index with flat high transmittance from 600nm to 620nm. The effective refractive index(𝑛𝑒𝑓𝑓) is calculated to be −0.045 + 0.466i and the normalize effective impedance(𝑍𝑒𝑓𝑓/𝑍0) is 0.956-0.368i at 610nm. The light emitted by a red conjugated polymer layer embedded in such a zero index metamaterial (ZIM) is concentrated in a narrow cone in the surrounding media, where the half-power beam width (HPBW) of the center lobe of the radiation pattern is around 25° in the wavelength range between 600nm and 620nm, giving directive emission in the visible region. This proposed light focusing system can be applied to sensing, beam collimating and filtering functionalities.}, doi = {10.1364/OE.22.022699}, eissn = {1094-4087}, issn = {1094-4087}, issue = {19}, journal = {Optics express}, pages = {22699-22706}, publicationstatus = {Published}, publisher = {Optica}, url = {https://hull-repository.worktribe.com/output/380392}, volume = {22}, keyword = {NanoMaterials, NanoElectronics, and NanoPhotonics (Nano3), Specialist Research - Other, Red conjugated polymer, Zero index metamaterials}, year = {2014}, author = {Cao, Tun and Zou, Yang and Adawi, Ali and Cryan, Martin J.} }