Excitonic optical Tamm states: a step towards a full molecular-dielectric photonic integration (2016)
Journal Article
Núnez-Sánchez, S., Lopez-Garcia, M., Murshidy, M. M., Abdel-Hady, A. G., Serry, M., Adawi, A. M., …Barnes, W. L. (2016). Excitonic optical Tamm states: a step towards a full molecular-dielectric photonic integration. ACS Photonics, 3(5), 743-748. https://doi.org/10.1021/acsphotonics.6b00060

We report the first experimental observation of an excitonic optical Tamm state supported at the interface between a periodic multilayer dielectric structure and an organic dye-doped polymer layer. The existence of such states is enabled by the metal... Read More about Excitonic optical Tamm states: a step towards a full molecular-dielectric photonic integration.

Directive emission of red conjugated polymer embedded within zero index metamaterials (2014)
Journal Article
Cao, T., Zou, Y., Adawi, A., & Cryan, M. J. (2014). Directive emission of red conjugated polymer embedded within zero index metamaterials. Optics express, 22(19), 22699-22706. https://doi.org/10.1364/OE.22.022699

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 n... Read More about Directive emission of red conjugated polymer embedded within zero index metamaterials.

Efficient out-coupling and beaming of Tamm optical states via surface plasmon polariton excitation (2014)
Journal Article
Lopez-Garcia, M., Ho, Y. -. D., Taverne, M. P. C., Chen, L., Murshidy, M. M., Edwards, A. P., …Oulton, R. (2014). Efficient out-coupling and beaming of Tamm optical states via surface plasmon polariton excitation. Applied physics letters, 104(23), 231116. https://doi.org/10.1063/1.4882180

We present evidence of optical Tamm states to surface plasmon polariton (SPP) coupling. We experimentally demonstrate that for a Bragg stack with a thin metal layer on the surface, hybrid Tamm-SPP modes may be excited when a grating on the air-metal... Read More about Efficient out-coupling and beaming of Tamm optical states via surface plasmon polariton excitation.

Light emission enhancement using randomly distributed plasmonic nanoparticle arrays (2014)
Journal Article
Butkus, J., Edwards, A. P., Quacquarelli, F. P., & Adawi, A. M. (2014). Light emission enhancement using randomly distributed plasmonic nanoparticle arrays. Optical materials, 36(9), 1502-1505. https://doi.org/10.1016/j.optmat.2014.04.010

We have fabricated and characterised the optical properties of solution processed randomly distributed gold nanoparticle plasmonic arrays that are coated with a thin-film fluorescent dye. Three times enhancement in the emission intensity of the fluor... Read More about Light emission enhancement using randomly distributed plasmonic nanoparticle arrays.

Plasmonic nanogaps for broadband and large spontaneous emission rate enhancement (2014)
Journal Article
Edwards, A. P., & Adawi, A. M. (2014). Plasmonic nanogaps for broadband and large spontaneous emission rate enhancement. Journal of applied physics, 115(5), Article ARTN 053101. https://doi.org/10.1063/1.4864018

We present the optical properties of a plasmonic nanogap formed between a silver metallic nanoparticle and an extended silver film that shows a strong enhancement in the spontaneous emission rate over the whole visible range. In particular, we use th... Read More about Plasmonic nanogaps for broadband and large spontaneous emission rate enhancement.

Optical nanolithography using a scanning near-field probe with an integrated light source (2008)
Journal Article
Kingsley, J. W., Ray, S. K., Adawi, A. M., Leggett, G. J., & Lidzey, D. G. (2008). Optical nanolithography using a scanning near-field probe with an integrated light source. Applied physics letters, 93(21), Article 213103. https://doi.org/10.1063/1.3032912

An ultracompact near-field optical probe is described that is based on a single, integrated assembly consisting of a gallium nitride (GaN) light-emitting diode (LED), a microlens, and a cantilever assembly containing a hollow pyramidal probe with a s... Read More about Optical nanolithography using a scanning near-field probe with an integrated light source.