Search Results - "Nigel P Johnson"

Ultra high quality factor one dimensional photonic crystal/photonic wire micro-cavities in silicon-on-insulator (SOI) by Zain, Ahmad R, Johnson, Nigel P, Sorel, Marc, De La Rue, Richard M

“…We present experimental results on photonic crystal/photonic wire micro-cavity structures that demonstrate further enhancement of the quality-factor…”
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Asymmetric split ring resonators for optical sensing of organic materials by Lahiri, Basudev, Khokhar, Ali Z, De La Rue, Richard M, McMeekin, Scott G, Johnson, Nigel P

“…Asymmetric Split Ring Resonators are known to exhibit resonant modes where the optical electric field is strongest near the ends of the arms, thereby…”
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Magnetic response of split ring resonators (SRRs) at visible frequencies by Lahiri, Basudev, McMeekin, Scott G, Khokhar, Ali Z, De La Rue, Richard M, Johnson, Nigel P

“…In this paper, we report on a substantial shift in the response of arrays of similarly sized Split Ring Resonators (SRRs), having a rectangular U-shaped…”
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All-optical switching in silicon-on-insulator photonic wire nano-cavities by Belotti, Michele, Galli, Matteo, Gerace, Dario, Andreani, Lucio Claudio, Guizzetti, Giorgio, Md Zain, Ahmad R, Johnson, Nigel P, Sorel, Marc, De La Rue, Richard M

“…We report on experimental demonstration of all-optical switching in a silicon-on-insulator photonic wire nanocavity operating at telecom wavelengths. The…”
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Negative index fishnet with nanopillars formed by direct nano-imprint lithography by Graham J Sharp, Saima I Khan, Ali Z Khokhar, Richard M De La Rue, Nigel P Johnson

“…In this paper we demonstrate the ability to fabricate fishnets by nanoimprinting directly into a pre-deposited three layer metal–dielectric–metal stack,…”
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Enhanced Fano resonance of organic material films deposited on arrays of asymmetric split-ring resonators (A-SRRs) by Lahiri, Basudev, McMeekin, Scott G, De la Rue, Richard M, Johnson, Nigel P

“…Depositing very thin organic films on the surface of arrays of asymmetric split-ring resonators (A-SRRs) produces a shift in their resonance spectra that can…”
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AFM imaging and plasmonic detection of organic thin-films deposited on nanoantenna arrays by Paul, Jharna, McMeekin, Scott G., De La Rue, Richard M., Johnson, Nigel P.

“…•Plasmonic resonant and non-resonant couplings to detect octadecanethiol molecules.•Resonant-coupling enables detection of micromolar concentrations of…”
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Impact of titanium adhesion layers on the response of arrays of metallic split-ring resonators (SRRs) by Lahiri, Basudev, Dylewicz, Rafal, De La Rue, Richard M, Johnson, Nigel P

“…At higher frequencies (visible and infrared) both the dimensions and the individual metal properties play an important role in determining the resonant…”
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Dual polarization operation of nanostructure arrays in the mid-infrared by Mbomson, Ifeoma G., Mohamad Ali Nasri, Ili F., De La Rue, Richard M., Johnson, Nigel P.

“…In this paper, we report on arrays of asymmetric split H-shape nanostructures tuned to produce two distinct resonances at wavelengths that range from 3 μm to 7…”
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Mapping the sensitivity of split ring resonators using a localized analyte by Sharp, Graham J., Vilhena, Henrique, Lahiri, Basudev, McMeekin, Scott. G., De La Rue, Richard M., Johnson, Nigel P.

“…Split ring resonator (SRR) based metamaterials have frequently been demonstrated for use as optical sensors of organic materials. This is made possible by…”
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Photonic crystal heterostructures from self-assembled opals by Khokhar, Ali Z., Rahman, Faiz, Johnson, Nigel P.

“…This paper describes the fabrication of opal-based photonic crystal heterostructures. These heterostructures were created by using multilayer deposition of…”
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Template-Assisted Growth of Nominally Cubic (100)-Oriented Three-Dimensional Crack-Free Photonic Crystals by Jin, Chongjun, McLachlan, Martyn A, McComb, David W, De La Rue, Richard M, Johnson, Nigel P

“…Three-dimensional (3D) photonic crystals (PhCs) are now beginning to acquire functionality via the use of dopants and heterostructures. However, the…”
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Design and Fabrication of High Quality-Factor 1-D Photonic Crystal/Photonic Wire Extended Microcavities by Zain, A.R.M., Johnson, N.P., Sorel, M., De La Rue, R.M.

“…We have successfully demonstrated experimentally the fabrication and measurement of high quality-factor one-dimensional photonic crystal/photonic wire extended…”
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Nanofabrication of gallium nitride photonic crystal light-emitting diodes by Khokhar, Ali Z., Parsons, Keith, Hubbard, Graham, Rahman, Faiz, Macintyre, Douglas S., Xiong, Chang, Massoubre, David, Gong, Zheng, Johnson, Nigel P., Rue, Richard M. De La, Watson, Ian M., Gu, Erdan, Dawson, Martin D., Abbott, Steve J., Charlton, Martin D.B., Tillin, Martin

“…We describe a comparison of nanofabrication technologies for the fabrication of 2D photonic crystal structures on GaN/InGaN blue LEDs. Such devices exhibit…”
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Ohmic contact formation to bulk and heterostructure gallium nitride family semiconductors by Rahman, Faiz, Xu, Sun, Watson, Ian M., Mutha, Dinesh Kumar Baid, Oxland, Richard K., Johnson, Nigel P., Banerjee, Abhishek, Wasige, Edward

“…We describe experiments investigating the quality of ohmic contacts to both bulk GaN and to III-nitride heterostructures. Titanium-based contacts were…”
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Transmission of photonic crystal coupled-resonator waveguide (PhCCRW) structure enhanced via mode matching by Jin, Chongjun, Johnson, Nigel, Chong, Harold, Jugessur, Aju, Day, Stephen, Gallagher, Dominic, De La Rue, Richard

“…A method for increasing the coupling efficiency between ridge optical waveguides and PhCCRWs is described. This increase is achieved via W1 channel waveguide…”
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Hybrid Asymmetric Nanostructures for the Mid-Infrared by Mbomson, Ifeoma G., De La Rue, Richard M., McMeekin, Scott, Johnson, Nigel P.

“…In comparison with electromagnetic radiation at shorter wavelengths, infrared radiation is non-destructive for many organic molecules. Previous research has…”
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Resonance hybridization in nanoantenna arrays based on asymmetric split-ring resonators by Lahiri, Basudev, McMeekin, Scott G., De La Rue, Richard M., Johnson, Nigel P.

“…Asymmetric split ring resonators (A-SRRs) are composed of two separate metallic arcs of asymmetric lengths that share the same center-of-curvature. The two…”
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Optical sensing from plasmonic metamaterials by Mbonson, Ifeoma, Tabor, Sean, McMeekin, Scott G., Lahiri, Basudev, De la Rue, Richard M., Johnson, Nigel P.

“…Metamaterial surfaces in the shape of Split Ring Resonators, Asymmetric Split Ring Resonators and H-shaped structures have been used as optical sensors for…”
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Progress in high Q optical nanobeam cavities for label-free sensing by Rahman, M. Ghazali A., Velha, Philippe, De La Rue, Richard M., Johnson, Nigel P.

“…Nanobeam cavities based on Silicon-On-Insulator (SOI) working at telecommunication wavelengths (1550 nm) provide an ideal platform to use for label free…”
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