All Outputs (760)

A new approach to photoalignment: photo-addition to a self-assembled monolayer (2008)
Journal Article
Dröge, S., O'Neill, M., Löbbert, A., Kitney, S. P., Kelly, S. M., Wei, P., & Dong, D. (2009). A new approach to photoalignment: photo-addition to a self-assembled monolayer. Journal of Materials Chemistry, 19(2), 274-279. https://doi.org/10.1039/b812226a

Photoalignment used to control the orientation of nematic liquid crystals in LCDs usually involves the photochemical modification of the chemical structure of an organic thin film so that an optical and/or steric anisotropy is developed. We now demon... Read More about A new approach to photoalignment: photo-addition to a self-assembled monolayer.

Inscription of fibre Bragg gratings in non-sensitised fibres using VUV F2 laser radiation (2008)
Journal Article
Dyer, P. E., Johnson, A. M., & Walton, C. D. (2008). Inscription of fibre Bragg gratings in non-sensitised fibres using VUV F2 laser radiation. Optics express, 16(23), 19297-19303. https://doi.org/10.1364/OE.16.019297

We report the inscription of fibre Bragg gratings in non-sensitised SMF 28 and HI 980 fibre by exposure to VUV F2 laser radiation at 157nm. The modulated effective refractive index change Δneff deduced from the shift in the grating reflection peaks w... Read More about Inscription of fibre Bragg gratings in non-sensitised fibres using VUV F2 laser radiation.

A design for an optical-nanocavity optimized for use with surface-bound light-emitting materials (2008)
Journal Article
Adawi, A. M., & Lidzey, D. G. (2008). A design for an optical-nanocavity optimized for use with surface-bound light-emitting materials. New Journal of Physics, 10(6), 065011. https://doi.org/10.1088/1367-2630/10/6/065011

We model the modification in the spontaneous emission (SE) rate of an emitting dipole placed on the surface of a two-dimensional (2D) L3 optical nanocavity using 3D FDTD calculations. We show that by introducing a concave region into the cavity-surfa... Read More about A design for an optical-nanocavity optimized for use with surface-bound light-emitting materials.

Phonon-plasmon coupled-mode lifetime in semiconductors (2008)
Journal Article
Dyson, A., & Ridley, B. K. (2008). Phonon-plasmon coupled-mode lifetime in semiconductors. Journal of applied physics, 103(11), 114507. https://doi.org/10.1063/1.2937918

Raman scattering measurements of the lifetime of hot phonons in GaN show a decrease with increasing electron concentration. Density-dependent lifetimes have also been deduced from noise measurements of AlGaN/GaN channels. We suggest that the results... Read More about Phonon-plasmon coupled-mode lifetime in semiconductors.

On the structure and chiroptical properties of (S)-4-isopropyl-oxazolidin-2-one (2008)
Journal Article
Benoit, D., Coulbeck, E., Eames, J., & Motevalli, M. (2008). On the structure and chiroptical properties of (S)-4-isopropyl-oxazolidin-2-one. Tetrahedron: Asymmetry, 19(9), 1068-1077. https://doi.org/10.1016/j.tetasy.2008.03.032

The specific rotation of (S)-4-isopropyl-oxazolidin-2-one is extremely solvent dependent. In chloroform it is dextrorotatory {[α] D 26 = + 15.5 (c 5.2, CHCl 3 )}, whereas in ethanol it is levorotatory {[α] D 26 = - 16.1 (c 5.2, EtOH)}. © 2008 Elsevie... Read More about On the structure and chiroptical properties of (S)-4-isopropyl-oxazolidin-2-one.

White-light OLEDs using liquid crystal polymer networks (2008)
Journal Article
Liedtke, A., O'Neill, M., Wertmöller, A., Kitney, S. P., & Kelly, S. M. (2008). White-light OLEDs using liquid crystal polymer networks. Chemistry of materials : a publication of the American Chemical Society, 20(11), 3579-3586. https://doi.org/10.1021/cm702925f

We have mixed nematic light-emitting liquid crystals and incorporated them as insoluble cross-linked polymer networks in a liquid crystal white-light organic light-emitting diode (LC-WOLED). The light emission is not voltage-dependent and polarized w... Read More about White-light OLEDs using liquid crystal polymer networks.

Iterative active-space selection for vibrational configuration interaction calculations using a reduced-coupling VSCF basis (2008)
Journal Article
Scribano, Y., & Benoit, D. M. (2008). Iterative active-space selection for vibrational configuration interaction calculations using a reduced-coupling VSCF basis. Chemical Physics Letters, 458(4-6), 384-387. https://doi.org/10.1016/j.cplett.2008.05.001

We adapt a variation-perturbation method to perform vibrational configuration interaction (VCI) calculations on large molecular systems. Starting from a self-consistent vibrational wave function, we use the vibrational configuration interaction with... Read More about Iterative active-space selection for vibrational configuration interaction calculations using a reduced-coupling VSCF basis.

The stability of PEDOT:PSS films monitored by electron spin resonance (2008)
Journal Article
Lee, J. K., Cho, J. M., Shin, W. S., Moon, S. J., Kemp, N. T., Zhang, H., & Lamb, R. (2008). The stability of PEDOT:PSS films monitored by electron spin resonance. Journal of the Korean Physical Society, 52(3), 621-626. https://doi.org/10.3938/jkps.52.621

We used electron spin resonance (ESR) and electrical conductivity measurements to track the stability of poly(3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) and ethylene glycol (EG)-treated PEDOT:PSS (EG-PEDOT:PSS) films in air. We... Read More about The stability of PEDOT:PSS films monitored by electron spin resonance.

Near-field investigation of porous silicon photoluminescence modification after oxidation in water (2008)
Journal Article
Juan, M., Bouillard, J. S., Plain, J., Lerondel, G., Adam, P. M., Bachelot, R., & Royer, P. (2008). Near-field investigation of porous silicon photoluminescence modification after oxidation in water. Journal of Microscopy, 229(3), 469-474. https://doi.org/10.1111/j.1365-2818.2008.01930.x

We report on local photo‐induced oxidation of porous silicon in water at room temperature. Starting from a nonluminescent sample, the oxidation process induces luminescence which was found to first increase and then decrease as a function of the oxid... Read More about Near-field investigation of porous silicon photoluminescence modification after oxidation in water.

Detection in near-field domain of biomolecules adsorbed on a single metallic nanoparticle (2008)
Presentation / Conference Contribution
Barbillon, G., Bijeon, J. L., Bouillard, J. S., Plain, J., Lamy De La Chapelle, M., Adam, P. M., & Royer, P. Detection in near-field domain of biomolecules adsorbed on a single metallic nanoparticle

In this paper, we study the performances of nanosensors based on Localized Surface Plasmon Resonance in the context of biological sensing. We demonstrate the sensitivity and the selectivity of our designed nanosensors by studying the influence of the... Read More about Detection in near-field domain of biomolecules adsorbed on a single metallic nanoparticle.

Observation of the β-phase in two short-chain oligofluorenes (2008)
Journal Article
Tsoi, W. C., Charas, A., Cadby, A. J., Khalil, G., Adawi, A. M., Iraqi, A., Hunt, B., Morgado, J., & Lidzey, D. G. (2008). Observation of the β-phase in two short-chain oligofluorenes. Advanced Functional Materials, 18(4), 600-606. https://doi.org/10.1002/adfm.200700530

The polymer poly(9,9-dioctylfluorene) (PF8) can be driven into a morphological form termed the β-phase that has enhanced planarity and increased structural rigidity. We show that the β-phase can be generated in two different fluorene oligomers; a flu... Read More about Observation of the β-phase in two short-chain oligofluorenes.

Ionization in vacuum ultraviolet F2 laser ablated polymer plumes (2007)
Journal Article
Dyer, P. E., Pervolaraki, M., Walton, C. D., Lippert, T., Kuhnke, M., & Wokaun, A. (2008). Ionization in vacuum ultraviolet F2 laser ablated polymer plumes. Applied physics. A, Materials science & processing, 90(3), 403-409. https://doi.org/10.1007/s00339-007-4341-x

An experimental investigation of ion generation in the 157-nm vacuum ultraviolet (VUV) F-2 laser ablation of three selected polymers - glycidyl azide polymer (GAP), a triazene polymer (TP6) and polyimide - is described. An ion collector probe is used... Read More about Ionization in vacuum ultraviolet F2 laser ablated polymer plumes.

Enhancing the radiative decay rate of fluorescent organic molecules using micropillar microcavities and optical nanocavities (2007)
Journal Article
Adawi, A. M., & Lidzey, D. G. (2008). Enhancing the radiative decay rate of fluorescent organic molecules using micropillar microcavities and optical nanocavities. Materials Science and Engineering: B, 149(3), 266-269. https://doi.org/10.1016/j.mseb.2007.10.005

We discuss the enhancement of spontaneous emission of fluorescent organic dyes when placed in micropillar microcavities and also in an optical nanocavity. We show experimentally that an enhancement in the spontaneous-emission rate of 1.78 +/- 0.04 ti... Read More about Enhancing the radiative decay rate of fluorescent organic molecules using micropillar microcavities and optical nanocavities.

Are polyelectrolyte dendrimers stimuli responsive? (2007)
Journal Article
Giupponi, G., Buzza, D. M. A., & Adolf, D. B. (2007). Are polyelectrolyte dendrimers stimuli responsive?. Macromolecules, 40(16), 5959-5965. https://doi.org/10.1021/ma070609l

Using a molecular dynamics and mean field theory approach which explicitly accounts for free ions, we study the conformation of polyelectrolyte dendrimers for different generation numbers, spacer lengths, charge distributions and ionic strengths. We... Read More about Are polyelectrolyte dendrimers stimuli responsive?.

An HI survey of six local group analogs. I. Survey description and the search for high-velocity clouds (2007)
Journal Article
Pisano, D. J., Barnes, D. G., Gibson, B. K., Staveley-Smith, L., Freeman, K. C., & Kilborn, V. A. (2007). An HI survey of six local group analogs. I. Survey description and the search for high-velocity clouds. The Astrophysical journal, 662(2), 959-968. https://doi.org/10.1086/517986

We have conducted an H I 21 cm emission-line survey using the Parkes 20 cm multibeam instrument and the Australia Telescope Compact Array (ATCA) of six loose groups of galaxies chosen to be analogs to the Local Group. The goal of this survey is to ma... Read More about An HI survey of six local group analogs. I. Survey description and the search for high-velocity clouds.

Soft photo structuring of porous silicon in water (2007)
Journal Article
Juan, M., Bouillard, J. S., Plain, J., Bachelot, R., Adam, P. M., Lerondel, G., & Royer, P. (2007). Soft photo structuring of porous silicon in water. physica status solidi (a), 204(5), 1276-1280. https://doi.org/10.1002/pssa.200674307

We report on local photo‐induced patterning of porous silicon in water. Scanning probe microscopy images of the sample surface after illumination show that the emission properties as well as the topography are modified according to the interferometri... Read More about Soft photo structuring of porous silicon in water.

Monte Carlo simulation of random branching in hyperbranched polymers (2007)
Journal Article
Richards, E. L., Buzza, D. M. A., & Davies, G. R. (2007). Monte Carlo simulation of random branching in hyperbranched polymers. Macromolecules, 40(6), 2210-2218. https://doi.org/10.1021/ma0700126

We study the branching statistics of hyperbranched polymers formed from a one-pot melt polymerization of AB2 monomers via Monte Carlo simulation. To simulate the reaction ensemble, we use a 3D percolation-type model where each lattice site of a cubic... Read More about Monte Carlo simulation of random branching in hyperbranched polymers.

Efficient correlation-corrected vibrational self-consistent field computation of OH-stretch frequencies using a low-scaling algorithm (2006)
Journal Article
Benoit, D. M. (2006). Efficient correlation-corrected vibrational self-consistent field computation of OH-stretch frequencies using a low-scaling algorithm. The Journal of chemical physics, 125(24), Article 244110. https://doi.org/10.1063/1.2423006

The authors present a new computational scheme to perform accurate and fast direct correlation-corrected vibrational self-consistent field (CC-VSCF) computations for a selected number of vibrational modes, which is aimed at predicting a few vibration... Read More about Efficient correlation-corrected vibrational self-consistent field computation of OH-stretch frequencies using a low-scaling algorithm.

Entanglement transition of randomly branched polymers in the hyperbranched class (2006)
Journal Article
Kunamaneni, S., Buzza, D. M. A., Read, D. J., Parker, D., Kenwright, A. M., Feast, W. J., & Larsen, A. L. (2006). Entanglement transition of randomly branched polymers in the hyperbranched class. Macromolecules, 39(19), 6720-6736. https://doi.org/10.1021/ma0603276

We study the melt rheology of randomly branched polymers in the hyperbranched polymer (HBP) class which are formed by the co-condensation of AB and AB2 type monomers. Specifically, we study the effect of branch length Mx on the entanglement transitio... Read More about Entanglement transition of randomly branched polymers in the hyperbranched class.

Experimental characteristics and analysis of transverse modes in 1.3 μm strained InGaAs quantum well VCSELs (2006)
Presentation / Conference Contribution
Pougeoise, E., Gilet, P., Grosse, P., Poncet, S., Chelnokov, A., Gérard, J. M., Bourgeois, G., Stevens, R., Hamelin, R., Hammar, M., Berggren, J., Sundgren, P., Vilain, S., Bouillard, J. S., Lerondel, G., Bachelot, R., & Royer, P. Experimental characteristics and analysis of transverse modes in 1.3 μm strained InGaAs quantum well VCSELs

In the context of optical interconnection applications, we report on results obtained on strained InGaAs quantum well Vertical Cavity Surface Emitting Lasers (VCSELs). Our devices are top p-type DBR oxide-confined VCSEL, grown by metalorganic vapour-... Read More about Experimental characteristics and analysis of transverse modes in 1.3 μm strained InGaAs quantum well VCSELs.