2011

Khokhar, A.Z., Rahman, F. , and Johnson, N.P. (2011) Photonic crystal heterostructures from self-assembled opals. Applied Physics A: Materials Science and Processing, 102 (2). pp. 281-287. ISSN 0947-8396 (doi:10.1007/s00339-010-6145-7)

Lahiri, B., McMeekin, S.G., De La Rue, R.M. , and Johnson, N.P. (2011) Resonance hybridization in nanoantenna arrays based on asymmetric split-ring resonators. Applied Physics Letters, 98 (15). p. 153116. ISSN 0003-6951 (doi:10.1063/1.3579537)

Khokhar, A.Z., Rahman, F. , and Johnson, N.P. (2011) Preparation and properties of gold-infiltrated polystyrene photonic crystals. Journal of Physics and Chemistry of Solids, 72 (3). pp. 185-189. ISSN 0022-3697 (doi:10.1016/j.jpcs.2010.12.010)

2010

Khokhar, A.Z. et al. (2010) Nanofabrication of gallium nitride photonic crystal light-emitting diodes. Microelectronic Engineering, 87 (11). pp. 2200-2207. ISSN 0167-9317 (doi:10.1016/j.mee.2010.02.003)

Belotti, M., Galli, M., Gerace, D., Andreani, L.C., Guizzetti, G., Md Zain, A.R. , Johnson, N.P. , Sorel, M. , and De La Rue, R. (2010) All-optical switching in silicon-on-insulator photonic wire nano-cavities. Optics Express, 18 (2). pp. 1450-1461. ISSN 1094-4087 (doi:10.1364/OE.18.001450)

De La Rue, R. et al. (2010) Micro-nano-photonic device structures applied to communications, sensing and consumer optoelectrics. In: 5th International Conference on Advanced Optoelectronics and Lasers (CAOL '2010), 10-14 Sep 2010, Sevastopol, Crimea, Ukraine.

Dylewicz, R., McMeekin, S.G., Khokhar, A.Z. , De La Rue, R. , and Johnson, N.P. (2010) Split ring resonators: the effect of titanium adhesion layers on the optical response. In: Johnson, N.P., Özbay, E., Ziolkowski, R.W. and Zheludev, N.I. (eds.) Metamaterials V. Series: Proceedings of SPIE (7711). SPIE, Bellingham, Washington, USA. ISBN 9780819481849

Johnson, N., Lahiri, B. , Khokhar, A. , De La Rue, R. , and McMeekin, S.G. (2010) Split ring resonators: from visible magnetic response to organic sensors (invited). In: 4th International Congress of Advanced Electromagnetic Materials in Microwaves and Optics, Sep 2010, Karlsruhe, Germany.

Johnson, N., Lahiri, B. , McMeekin, S., Khokhar, A. , and De La Rue, R. (2010) Split ring resonators: from organic sensors to visible magnetic response (invited). In: SPIE Photonics Europe, 12-16 Apr 2010, Brussels, Belgium.

Lahiri, B., Dylewicz, R. , De La Rue, R.M. , and Johnson, N.P. (2010) Impact of titanium adhesion layers on the response of arrays of metallic split-ring resonators (SRRs). Optics Express, 18 (11). pp. 11202-11208. ISSN 1094-4087 (doi:10.1364/OE.18.011202)

Lahiri, B., Dylewicz, R. , McMeekin, S.G., De La Rue, R. , and Johnson, N. (2010) The effect of titanium adhesion layers of the optical response of split ring resonators. In: 2nd International Conference on Metamaterials, Photonic Crystals and Plasmonics, 22-25 Feb 2010, Cairo, Egypt.

Lahiri, B., McMeekin, S., De La Rue, R. , and Johnson, N. (2010) Resonance hybridisation in nano-antenna arrays based on asymmetric split-ring resonators. In: 9th International Conference on Photonic and Electromagnetic Crystal Structures (PECS IX), 26-30 Sep 2010, Granada, Spain.

Lahiri, B., McMeekin, S.G., Khokhar, A.Z. , De La Rue, R.M. , and Johnson, N.P. (2010) Magnetic response of split ring resonators (SRRs) at visible frequencies. Optics Express, 18 (3). pp. 3210-3218. ISSN 1094-4087 (doi:10.1364/OE.18.003210)

Md Zain, A.R., Johnson, N.P , Sorel, M. , and De La Rue, R.M. (2010) Design and fabrication of high quality-factor 1-d photonic crystal/photonic wire extended microcavities. IEEE Photonics Technology Letters, 22 (9). pp. 610-612. ISSN 1041-1135 (doi:10.1109/LPT.2010.2040978)

2009

Rahman, F., Xu, S., Watson, I.M., Mutha, D.K.B., Oxland, R.K. , Johnson, N.P. , Banerjee, A. , and Wasige, E. (2009) Ohmic contact formation to bulk and heterostructure gallium nitride family semiconductors. Applied Physics A-Materials Science and Processing, 94 (3). pp. 633-639. ISSN 0947-8396 (doi:10.1007/s00339-008-4848-9)

Zain, A.R.M., Johnson, N.P. , Sorel, M. , and De La Rue, R.M. (2009) Coupling strength control in photonic crystal/photonic wire multiple cavity devices. Electronics Letters, 45 (5). pp. 283-284. ISSN 0013-5194 (doi:10.1049/el:20092814)

Belotti, M., Galli, M., Gerace, D., Andreani, L.C., Guizzetti, G., md zain, ahmad rifqi , Johnson, N. , Sorel, M. , and De La Rue, R. (2009) All optical switching in silicon-on-insulator photonic wire nano-cavities. In: Optical Society of America (2009) & IPNRA and SL Meetings (Joint Session), Jul 2009, Honolulu, Hawaii.

Belotti, M., Galli, M., Gerace, D., Andreani, L.C., md zain, A. , Johnson, N. , Sorel, M. , and De La Rue, R. (2009) All-optical logical operation in photonic wire nano-cavities. In: CLEO Europe - European Conference of Lasers and Electro-optics, Jun 2009, Munich, Germany.

Belotti, M., Galli, M., Gerace, D., Andreani, L.C., md zain, A. , Johnson, N. , Sorel, M. , and De La Rue, R. (2009) All-optical switching in silicon-on-insulator photonic wire nano-cavities. In: IEEE/LEOS Winter Topicals Meeting Series, 2009 , 12-14 Jan 2009, Innsbruck, Austria.

Johnson, N., Lahiri, B. , Khokhar, A. , De La Rue, R. , and McMeekin, S.G. (2009) Asymmetric split ring resonators for Infra Red optical sensing of organic materials. In: 3rd International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, 30 Aug- 4 Sep 2009, London, UK.

Johnson, N.P., De La Rue, R.M. , and De La Rue, S.A. (2009) Metamaterials at Optical Frequencies: Fabrication and Measurements. In: Capolino, F, (ed.) Metamaterials Handbook. CRC Press. ISBN 9781420053623

Khokhar, A.Z. et al. (2009) Patterning of photonic quasi-crystals on GaN LEDs. In: IEEE/LEOS Winter Topicals Meeting Series, 12-14 Jan 2009, Innsbruck, Austria.

Khokhar, A.Z. et al. (2009) Modelling, fabrication and characterisation of photonic quasicrystal structures on GaN LEDs. In: UK Nitride Consortium Annual Conference, 7-8 Jan 2009, Oxford, UK.

Lahiri, B., Khokhar, A. , De La Rue, R. , McMeekin, S.G., and Johnson, N. (2009) Asymmetric split ring resonators for optical sensing. In: SPIE Europe Optics and Optoelectronics, 20-23 Apr 2009, Prague, Czech Rep.

Lahiri, B., Khokhar, A. , De La Rue, R. , McMeekin, S.G., and Johnson, N. (2009) Asymmetric split ring resonators for optical sensing of organic materials. Optics Express, 17 (2). pp. 1107-1115. ISSN 1094-4087 (doi:10.1364/OE.17.001107)

Lahiri, B., McMeekin, S.G., Khokhar, A. , De La Rue, R. , and Johnson, N. (2009) Asymmetric split ring resonators for organic sensing. In: 11th International Conference on Transparent Optical Network (ICTON 09), 28 Jun - 2 Jul 2009, Azores, Portugal.

Md Zain, A.R., Johnson, N.P. , Sorel, M. , and De La Rue, R. (2009) Coupling strength control in photonic crystal/photonic wire multiple cavity devices. Electronics Letters, 45 (5). pp. 283-284. ISSN 0013-5194 (doi:10.1049/el:20092814)

Md Zain, A.R., Johnson, N.P. , Sorel, M. , and De La Rue, R.M. (2009) High quality-factor 1-D-suspended photonic crystal/photonic wire silicon waveguide micro-cavities. Ieee Photonics Technology Letters, 21 (24). pp. 1789-1791. ISSN 1041-1135 (doi:10.1109/LPT.2009.2033712)

2008

Md Zain, A.R., Johnson, N. , Sorel, M. , and De La Rue, R.M. (2008) Ultra high quality factor one dimensional photonic crystal/photonic wire micro-cavities in silicon-on-insulator (SOI). Optics Express, 16 (16). pp. 12084-12089. ISSN 1094-4087 (doi:10.1364/OE.16.012084)

Johnson, N.P., Lahiri, B., Khokhar, A.Z., De La Rue, R.M. , and McMeekin, S. (2008) Optical properties of split ring resonator metamaterial structures on semiconductor substrates. Proceedings of the SPIE - the International Society for Optical Engineering, 6987 (69871F). ISSN 0277-786X (doi:10.1117/12.786356)

Chong-Jun, J., De La Rue, R. M. , and Johnson, N. P. (2008) Observations of defect propagation in [100]-oriented opal-type photonic crystals. Chinese Physics B, 17 (4). pp. 1298-1304. ISSN 1674-1056 (doi:10.1088/1674-1056/17/4/025)

De La Rue, R. et al. (2008) Photonic crystal (PhC) and photonic quasi crystal (PQC) light extraction structures for enhanced efficiency and beamshape control in light-emitting devices. In: Photonics 2008, 15-17 December 2008, New Delhi, India.

De La Rue, R.M. et al. (2008) Strongly confined guided-wave photonic structures with nano-scale control for linear and non-linear functionality. In: 17th International Laser Physics Workshop, 30 June - 4 July 2008, Trondheim, Norway.

Johnson, N.P., Lahiri, B. , Khokhar, A.Z. , De La Rue, R.M. , and McMeekin, S. (2008) Optical properties of split ring resonator metamaterial structures on semiconductor substrates - art. no. 69871F 27. In: Johnson, N.P., Ozbay, E., Zheludev, N.I. and Ziolkowski, R.W. (eds.) Metamaterials III. Series: Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) (6987). SPIE, Bellingham, WA, F9871-F9871. ISBN 9780819471857

Khokhar, A. Z., De La Rue, R. M. , Treble, B. M., McComb, D. W., and Johnson, N. P. (2008) Stibnite inverse opal. Micro and Nano Letters, 3 (1). pp. 1-6. ISSN 1750-0443 (doi:10.1049/mnl:20070059)

Khokhar, A.Z., Macintyre, D.P. , Rahman, F. , Johnson, N.P. , Watson, I.M., Gu, E., Zhang, H., Dawson, M.D., and De La Rue, R.M. (2008) Lithographic processing of photonic crystal structures on GaN epilayers for LED applications. In: UK Nitride Consortium Annual Conference, 9-10 Jan 2008, Glasgow, UK.

Khokhar, A.Z. et al. (2008) Nanoimprint lithography patterning of photonic quasicrystal light extraction structures on InGaN/GaN blue LEDs. In: UK Semiconductor 08 Conference, 2-3 July 2008, Sheffield, UK.

McLachlana, M. A., Barron, C. C. A., Johnson, N. P. , De La Rue, R. M. , and McComb, D. W. (2008) Preparation of large area three-dimensionally ordered macroporous thin films by confined infiltration and crystallisation. Journal of Crystal Growth, 310 (10). pp. 2644-2648. ISSN 0022-0248 (doi:10.1016/j.jcrysgro.2008.01.029)

Md Zain, A.R., Chong, H.M.H. , Johnson, N. , and De La Rue, R.M. (2008) Fine tuning of single row photonic crystal extended cavities embedded in photonic wire waveguides. In: Krolikowski, W.Z., Soukoulis, C.M., Lam, P.K., Davis, T.J., Fan, S. and Kivshar, Y.S. (eds.) Photonics: Design, Technology, and Packaging III. Series: Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) (6801). SPIE, Bellingham, WA, U8010-U8010. ISBN 9780819469724

Md Zain, A.R., Johnson, N.P , Sorel, M. , and De La Rue, R.M. (2008) High-quality factor suspended-wire 1D photonic crystal micro-cavity in silicon-on-insulator. In: European Conference of Integrated Optics (ECIO) 2008, 11-13 June 2008, Eindhoven, The Netherlands.

Rahman, F., and Johnson, N.P. (2008) The new generation of physical effect colorants. Optics and Photonics News, 19 (2). pp. 24-29. ISSN 1047-6938 (doi:10.1364/OPN.19.2.000024)

Villa, D., Capollino, F., Lahiri, B. , Johnson, N.P. , Truczynski, S., and Pawlak, D.A. (2008) Electromagnetic bandgap calculations of Tb₃Sc₂Al₃O₁₂-TbScO₃ eutectic with rod-like microstructure. In: NATO Advanced Research Workshop Metamaterials for Secure Information and Communication Technologies, META’08, 7-10 May 2008, Marrakesh, Marocco.

Watson, I.M., Xiong, C., Kelm, P., Zhang, H., Dawson, M.D., Khokhar, A.Z. , Macintyre, D.S., Johnson, N.P. , Rahman, F. , and De la Rue, R.M. (2008) Fabrication and characterisation of GaN-based photonic quasicrystal LEDs. In: UK Semiconductor 08 Conference, 2-3 July 2008, Sheffield, UK.

Zain, A.R.M., Johnson, N.P. , and De La Rue, R.M. (2008) High transmission 1D photonic crystal/photonic wire multiple cavity structures based on Silicon-on-Insulator - art. no. 69891A 26. In: De La Rue, R.M., Lopez, C., Midrio, M. and Viktorovitch, P. (eds.) Photonic Crystal Materials and Devices VIII. Series: Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) (6989). SPIE, Bellingham, WA, A9891-A9891. ISBN 978-0-8194-7187-1

2007

Khokhar, AZ, De La Rue, RM , and Johnson, NP (2007) Modified emission of semiconductor nano-dots in three-dimensional photonic crystals. Iet Circuits Devices and Systems, 1 . pp. 210-214. (doi:10.1049/iet-cds)

Khokhar, AZ, De La Rue, RM , Ren, K, Li, ZY, and Johnson, NP (2007) Permanent tuning of the opal stop-band with the application of uniaxial pressure. Journal of Optics A: Pure and Applied Optics, 9 . pp. 446-450. ISSN 1464-4258 (doi:10.1088/1464-4258/9/5/004)

Md Zain, A.R., Chong, H., Johnson, N. , and De La Rue, R. (2007) Fine tuning of single row photonic crystal extended cavities embedded in photonic wire waveguides. In: SPIE Photonics: Design, Technology, and Packaging III, 5-7 December 2007, Canberra, Australia.

Rahman, F., Johnson, N.P. , and De La Rue, R. (2007) Modifications of luminescent properties of gallium nitride through dislocation engineering and impurity doping. In: UK Nitride Consortium Annual Conference, 4-5 Jan 2007, Cambridge, England.

2006

Johnson, N.P., Khokhar, A.Z., Chong, H.M., De La Rue, R.M., Antosiewicz, T.J., and McMeekin, S. (2006) A review of size and geometrical factors influencing resonant frequencies in metamaterials. Opto-Electronics Review, 14 (3). pp. 187-191. ISSN 1896-3757 (doi:10.2478/s11772-006-0024-y)

Johnson, N.P., Khokhar, A.Z., Chong, H.M.H., De La Rue, R.M. , and McMeekin, S. (2006) Characterisation at infrared wavelengths of metamaterials formed by thin-film metallic split-ring resonator arrays on silicon. Electronics Letters, 42 (19). pp. 1117-1119. ISSN 0013-5194 (doi:10.1049/el:20062212)

Capolino, F et al. (2006) METAMORPHOSE European Doctoral Programs on Metamaterials - State-of-the-art. IEEE Antennas and Propagation Magazine, 48 . pp. 219-223.

De La Rue, R.M. et al. (2006) Elements of nanophotonics: photonic crystals, photonic wires, metamaterials and more. In: Conference on Optoelectronic and Microelectronic Materials and Devices (COMMAD 06), 6-8 Dec 2006, Perth, Australia.

De la Rue, R et al. (2006) Photonic crystal and photonic wire nano-photonics based on silicon-on-insulator. New Journal of Physics, 8 . ISSN 1367-2630 (doi:10.1088/1367-2630/8/10/256)

Johnson, N (2006) Imprinting on synthetic opal by applying uniaxial pressure. Micro and Nano Letters, 1 (1). pp. 43-46. (doi:10.1049/mnl:20065006)

Johnson, N, and De La Rue, RM (2006) Recent progress in technology of photonic crystal devices and circuits. In: Symposium on Photonic technologies for the 7th Framework Programme, Wroclaw,Poland.

Johnson, N, Khokhar, AZ , De La Rue, RM , and McMeekin, S (2006) Split resonantor (SRR) structures on silicon for increased functionality in the infra-red. In: International Workshop on Physics of Photonic Crystals and Metamaterials, Brussels, Belgium.

Johnson, N, Khokhar, AZ , McMeekin, S, Jin, CJ, Chong, HM, and De La Rue, RM (2006) Correlation of split ring resonator resonant features in the near infra red with geometery. In: Photon06 : QEP17, Manchester, UK.

Johnson, N, Khokhar, AZ , McMeekin, S, Jin, CJ, Chong, HM, and De La Rue, RM (2006) The influence of metal type on Split Ring Resonators (SRR) resinant features in the near infra red. In: Progress in Electromagnetics Research Symposium, Tokyo, Japan.

Khokhar, AZ, De La Rue, RM , and Johnson, N (2006) Stibnite inverse opal. In: Photon06 : QEP17, Manchester, UK.

Rahman, F, and Johnson, N (2006) Manipulation of yellow luminescence in gallium nitride epilayers grown on sapphire. In: UK III-V Compound semiconductor conference 2006, Sheffield.

Rahman, F, Johnson, N , and De La Rue, RM (2006) Modification of luminescence properties of gallium nitride through defect engineering. In: Workshop on solid-state lighting, Glasgow, Scotland.

Rahman, F, and Johnson, NP (2006) Generation,of white light from optically pumped gallium nit-ride epilayers. Applied Physics Letters, 89 . (doi:10.1063/1.2219149)

Zhang, H, Gnan, M, Johnson, N , and De La Rue, RM (2006) Ultra-small Mach-Zehnder interferometer devices in thin silicon-on-insulator. In: Integrated Photonics Research and Applications 2006, Connecticut , USA.

2005

De La Rue, R.M. et al. (2005) Photonic crystal and photonic wire device structures. Proceedings of the SPIE - the International Society for Optical Engineering, 5950 . p. 595004. ISSN 0277-786X (doi:10.1117/12.620658)

Johnson, N.P., Khokhar, A.Z., Chong, H.M., Jin, C., Mandel, J., McMeekin, S., and De La Rue, R.M. (2005) Increasing optical metamaterials functionality. Proceedings of the SPIE - the International Society for Optical Engineering, 5955 . pp. 163-168. ISSN 0277-786X (doi:10.1117/12.623144)

De La Rue, R.M. et al. (2005) Semiconductor-based active and passive nanophotonics. In: Nanophotonics for Information Systems Conference, April 2005, San Diego, CA, USA.

Jin, CJ, De La Rue, RM , and Johnson, N (2005) Defect formation in (100) oriented photonic crystal fabricated by template-assisted convective self-assembly. In: International Congress on Optics and Optoelectronics, Warsaw, Poland.

Jin, CJ, Johnson, N , Chong, HMH, Jugessur, AS, Day, S, Gallagher, D, and De La Rue, RM (2005) Enhnaced transmission of photonic crystal coupled-resonator waveguide structure via mode matching. In: CLEO/Europe-EQEC conference, Munich, Germany.

Jin, CJ, Johnson, NP , Chong, HMH, Jugessur, AS, Day, S, Gallagher, D, and De La Rue, RM (2005) Transmission of photonic crystal coupled-resonator waveguide (PhCCRW) structure enhanced via mode matching. Optics Express, 13 . pp. 2295-2302. ISSN 1094-4087

Jin, CJ, McLachlan, MA, McComb, DW, De La Rue, RM , and Johnson, N (2005) Template-assisted self-assembly growth of (100) oriented three-dimensional photonic crystal. In: CLEO/Europe-EQEC conference, Munich, Germany.

Johnson, N, Chong, HMH, Khokhar, AZ , Mandel, J, and De La Rue, RM (2005) Towards optical (IR) split ring resonators. In: Seminar on Metamaterials and circuit based on SRRs, Barcelona, Spain.

Johnson, N, Jin, CJ, Khokhar, AZ , Gnan, M, Zain, ARM, Chong, HMH, Mandel, J, and De La Rue, RM (2005) Nanophotonic structures: From photonic crystals to metamaterials. In: UNSPECIFIED.

Khokhar, AZ, De La Rue, RM , and Johnson, N (2005) Towards metamaterials from opals. In: International Congress on Optics and Optoelectronics, Warsaw, Poland.

Rahman, F, Johnson, NP , and Slight, T (2005) Electrical conduction in light-emitting organic polymer Schottky diodes. Journal of Applied Physics, 98 . (doi:10.1063/1.2143117)

2004

Jin, C, Johnson, N , Chong, HMH, and De La Rue, RM (2004) Enhanced transmission of photonic crystal coupled-resonator optical waveguide via mode matching. In: Photon 2004, Glasgow, UK.

Johnson, N, Khokhar, AZ , and De La Rue, RM (2004) Fabrication scheme for metamaterials based on polystyrene opal photonic crystals. In: Photon 2004, Glasgow, UK.

Johnson, N, Khokhar, AZ , Elgaid, K , Thayne, IG , Drysdale, TD , and Cumming, DRS (2004) Tools for metamaterials applications from GHz to optical frequencies. In: First Workshop of the Metamorphose, Lille-Louvain-la-Neuve, Belgium, France.

Johnson, N, Khokhar, AZ , McLachlan, MA, McComb, DW, and De La Rue, RM (2004) Application of pressure to shift the bandgap in polystyrene based photonic crystals. In: Photonic Crystal Materials and Nanostructures, Strasbourg, France.

Johnson, N, de,Koning,, JC, Chong, HMH, and De La Rue, RM (2004) Design and Fabrication of silicon/air photonic crystal beam splitter. In: Photon 2004, Glasgow, UK.

2003

De La Rue, RM, Johnson, N , McComb, D, Pottier, P, Jin, C., Treble, B, McLachlan, M, Jugessur, AS, and Camargo, EA (2003) Photonic crystals and photonic wire technology and devices. In: Electrochemical Society meeting, Paris, France.

McLachlan, M, McComb, D, Johnson, N , Jin, C., and De La Rue, RM (2003) Growth of large, low defect density photonic crystals. In: 6th International Conference on Material Chemistry, Sheffield, UK.

2001

Johnson, N (2001) Three-dimensional photonic crystals: approaches to fabrication. Aip Conference Proceedings, 560 . pp. 424-448. (doi:10.1063/1.1372740)