All Outputs (190)

Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials (2009)
Journal Article
Evans, L. A., Thomasson, M. J., Kelly, S. M., & Wadhawan, J. (2009). Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials. Journal of physical chemistry. C, 113(20), 8901-8910. https://doi.org/10.1021/jp806322c

Theory is presented for the case of two-dimensional diffusion anisotropy in axiosymmetric systems, which, advantageously and indirectly, affords a unified theory of diffusive mass transport at planar, microdisk (or nanodisk) and cylindrical electrode... Read More about Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials.

Applicability of the kp method to modeling of InAs/GaSb short-period superlattices (2009)
Journal Article
Hong, B. H., Rybchenko, S. I., Itskevich, I. E., Haywood, S. K., Intartaglia, R., Tasco, V., Rainò, G., & De Giorgi, M. (2009). Applicability of the kp method to modeling of InAs/GaSb short-period superlattices. Physical review B: Condensed matter and materials physics, 79(16), 165323-1-165323-4. https://doi.org/10.1103/PhysRevB.79.165323

We investigate the long-standing controversy surrounding modeling of the electronic spectra of InAs/GaSb short-period superlattices (SPSLs). Most commonly, such modeling for semiconductor heterostructures is based on the kp method. However, this meth... Read More about Applicability of the kp method to modeling of InAs/GaSb short-period superlattices.

Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity (2009)
Journal Article
Zorlu, Y., Ermeydan, M. A., Dumoulin, F., Ahsen, V., Savoie, H., & Boyle, R. W. (2009). Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity. Photochemical & photobiological sciences : an international journal, 8(3), 312-318. https://doi.org/10.1039/b817348f

Three novel water soluble, non-ionic, zinc phthalocyanines (Pcs) have been synthesized and their spectroscopic and photodynamic properties investigated in aqueous media. One of the three compounds was shown to be significantly less aggregated, when c... Read More about Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity.

Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties (2009)
Journal Article
Yeap, G. H., Rybchenko, S. I., Itskevich, I. E., & Haywood, S. K. (2009). Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties. Physical review B: Condensed matter and materials physics, 79(7), 075305-1-075305-6. https://doi.org/10.1103/physrevb.79.075305

InSb-based self-assembled quantum dots are very promising for the midinfrared (3-5μm) optical range. We have analyzed the effect of geometry and composition on the electronic structure and optical spectra of InAsx Sb1-x /InAs dots. The calculated tra... Read More about Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties.

Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor (2009)
Journal Article
Dröge, S., Khalifah, M. S. A., O'Neill, M., Thomas, H. E., Simmonds, H. S., Macdonald, J. E., Aldred, M. P., Vlachos, P., Kitney, S. P., Löbbert, A., & Kelly, S. M. (2009). Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor. Journal of Physical Chemistry B, 113(1), 49-53. https://doi.org/10.1021/jp803379a

Grazing incidence X-ray diffraction is used to find the thin film morphology of an extended molecule with an irregular alternating fluorene - thiophene structure, which is used to obtain linearly polarized electroluminescence and the photovoltaic eff... Read More about Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor.

L-band-related interband transition in InSb/GaSb self-assembled quantum dots (2008)
Book Chapter
Rybchenko, S. I., Gupta, R., Itskevich, I. E., & Haywood, S. K. (2008). L-band-related interband transition in InSb/GaSb self-assembled quantum dots. In Springer Proceedings in Physics; Narrow Gap Semiconductors 2007 (81-83). Springer Verlag. https://doi.org/10.1007/978-1-4020-8425-6_20

Effect of lattice-mismatch-induced strain on Γ-, X- and L-conduction-band edges in III-V self-assembled quantum dots has been calculated. The misfit strain is shown to strongly affect the band edges, leading to a possibility of Γ-L and Γ-X crossover.... Read More about L-band-related interband transition in InSb/GaSb self-assembled quantum dots.

Banana-shaped dopants for flexoelectric nematic mixtures (2008)
Journal Article
Aziz, N., Kelly, S. M., Duffy, W., & Goulding, M. (2008). Banana-shaped dopants for flexoelectric nematic mixtures. Liquid crystals, 35(11), 1279-1292. https://doi.org/10.1080/02678290802522114

The synthesis is reported of new meta-substituted quaterphenyls and several related dimers as dopants for nematic mixtures with flexoelectric properties. The number and nature of the terminal substituents is varied from apolar with a small dipole mom... Read More about Banana-shaped dopants for flexoelectric nematic mixtures.

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.

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.

Electroluminescent segmented liquid crystalline trimers (2008)
Journal Article
Aldred, M. P., Hudson, R., Kitney, S. P., Vlachos, P., Liedtke, A., Woon, K. L., O'Neill, M., & Kelly, S. M. (2008). Electroluminescent segmented liquid crystalline trimers. Liquid crystals, 35(4), 413-427. https://doi.org/10.1080/02678290801924931

The synthesis and liquid crystal behaviour of light-emitting trimeric liquid crystals consisting of three mesomorphic moieties connected by aliphatic spacers are reported. The combination of an aromatic light-emitting central core and two cholestanyl... Read More about Electroluminescent segmented liquid crystalline trimers.

Room temperature photoluminescence at 4.5 μm from InAsN (2008)
Journal Article
Zhuang, Q., Godenir, A. M. R., Krier, A., Lai, K. T., & Haywood, S. K. (2008). Room temperature photoluminescence at 4.5 μm from InAsN. Journal of applied physics, 103(6), 063520. https://doi.org/10.1063/1.2896638

Nitrogen incorporation in InAsN epilayers grown by radio-frequency plasma-assisted molecular beam epitaxy was investigated as a function of growth conditions. Reduced growth rate, growth temperature, and arsenic flux significantly enhance the nitroge... Read More about Room temperature photoluminescence at 4.5 μm from InAsN.

Rapid on-chip multi-step (bio)chemical procedures in continuous flow - manoeuvring particles through co-laminar reagent streams (2008)
Journal Article
Peyman, S. A., Iles, A., & Pamme, N. (2008). Rapid on-chip multi-step (bio)chemical procedures in continuous flow - manoeuvring particles through co-laminar reagent streams. Chemical communications : Chem comm / the Royal Society of Chemistry, 1220-1222. https://doi.org/10.1039/b716532c

We introduce a novel and extremely versatile microfluidic platform in which tedious multi-step biochemical processes can be performed in continuous flow within a fraction of the time required for conventional methods.

Conduction-band crossover induced by misfit strain in InSb/GaSb self-assembled quantum dots (2007)
Journal Article
Rybchenko, S. I., Gupta, R., Lai, K. T., Itskevich, I. E., Haywood, S. K., Tasco, V., Deguffroy, N., Baranov, A. N., & Tournié, E. (2007). Conduction-band crossover induced by misfit strain in InSb/GaSb self-assembled quantum dots. Physical review B: Condensed matter and materials physics, 76(19), 0 - 0. https://doi.org/10.1103/physrevb.76.193309

We address the occurrence of conduction-band crossover in III-V self-assembled quantum dots solely due to misfit strain. Band structure analysis in terms of standard deformation-potential theory shows that Γ-X crossover can occur in the dot, while bo... Read More about Conduction-band crossover induced by misfit strain in InSb/GaSb self-assembled quantum dots.

The guppy as a conservation model: Implications of parasitism and inbreeding for reintroduction success (2007)
Journal Article
Van Oosterhout, C., Smith, A. M., Hänfling, B., Ramnarine, I. W., Mohammed, R. S., & Cable, J. (2007). The guppy as a conservation model: Implications of parasitism and inbreeding for reintroduction success. Conservation Biology, 21(6), 1573-1583. https://doi.org/10.1111/j.1523-1739.2007.00809.x

Ex situ conservation is of increasing importance to prevent the extinction of endangered animals in the wild. Despite low success rates of reintroduction programs few researchers have investigated empirically the efficacy of captive breeding regimes... Read More about The guppy as a conservation model: Implications of parasitism and inbreeding for reintroduction success.

Physical and biological development of a newly breached managed realignment site, Humber estuary, UK (2007)
Journal Article
Mazik, K., Smith, J. E., Leighton, A., & Elliott, M. (2007). Physical and biological development of a newly breached managed realignment site, Humber estuary, UK. Marine pollution bulletin, 55(10-12), 564-578. https://doi.org/10.1016/j.marpolbul.2007.09.017

As part of the Humber flood defence upgrade works (Urgent works) undertaken by the Environment Agency, the Paull Holme Strays site was identified as one of twelve potential managed realignment sites within the Humber catchment. The site was breached... Read More about Physical and biological development of a newly breached managed realignment site, Humber estuary, UK.

Midinfrared photoluminescence and compositional modulation in pentanary GaInAsPSb alloys grown by liquid phase epitaxy (2007)
Journal Article
Krier, A., Smirnov, V. M., Batty, P. J., Yin, M., Lai, K. T., Rybchenko, S., Haywood, S. K., Vasil'ev, V. I., Gagis, G. S., & Kuchinskii, V. I. (2007). Midinfrared photoluminescence and compositional modulation in pentanary GaInAsPSb alloys grown by liquid phase epitaxy. Applied physics letters, 91(8), 082102. https://doi.org/10.1063/1.2768892

Room temperature photoluminescence is reported from GaInAsSbP pentanary alloys grown by liquid phase epitaxy on GaSb. The epitaxial layers exhibited emission in the midinfrared between 3 and 4 μm. Investigation of the structural and photoluminescence... Read More about Midinfrared photoluminescence and compositional modulation in pentanary GaInAsPSb alloys grown by liquid phase epitaxy.

Importance of aspect ratio over shape in determining the quantization potential of self-assembled zinc-blende III-V quantum dots (2007)
Journal Article
Rybchenko, S. I., Yeap, G., Gupta, R., Itskevich, I. E., & Haywood, S. K. (2007). Importance of aspect ratio over shape in determining the quantization potential of self-assembled zinc-blende III-V quantum dots. Journal of applied physics, 102(1), 013706. https://doi.org/10.1063/1.2752127

We have studied the effect of shape on the strain-modified electron/hole confinement potential in zinc-blende quantum dots (QDs), using standard deformation potential theory and an anisotropic continuum-elasticity approximation. Calculations were per... Read More about Importance of aspect ratio over shape in determining the quantization potential of self-assembled zinc-blende III-V quantum dots.

Electric field induced blueshift of the e1-hh1 exciton transition in a GaAs1-xNx/GaAs (x<1%) stepped quantum well (2006)
Journal Article
Hill, G., Hopkinson, M., Steer, M. J., Gupta, R., Lim, A. C., & Haywood, S. K. (2006). Electric field induced blueshift of the e1-hh1 exciton transition in a GaAs1-xNx/GaAs (x

The authors present room temperature photoluminescence and photocurrent measurements on a three layer GaAsNGaAs Al0.35 Ga0.65 As (N≤1%) stepped quantum well. A blueshift in the ground state transition energy is observed with the application of an ele... Read More about Electric field induced blueshift of the e1-hh1 exciton transition in a GaAs1-xNx/GaAs (x<1%) stepped quantum well.

Preparation of mesoporous Pd/Si3N4nanocomposites as heterogeneous catalysts via three different chemical routes (2006)
Journal Article
Cheng, F., Kelly, S. M., Young, N. A., Hope, C. N., Beverley, K., Francesconi, M. G., Clark, S., Bradley, J. S., & Lefebvre, F. (2006). Preparation of mesoporous Pd/Si3N4nanocomposites as heterogeneous catalysts via three different chemical routes. Chemistry of materials : a publication of the American Chemical Society, 18(25), 5996-6005. https://doi.org/10.1021/cm061106h

Mesoporous palladium/silicon nitride nanocomposites were prepared via three different chemical routes to generate simultaneous control of the solid-state morphology of the palladium nanoparticles and that of the silicon nitride support at the same ti... Read More about Preparation of mesoporous Pd/Si3N4nanocomposites as heterogeneous catalysts via three different chemical routes.

Computer assisted orthopaedic surgical system for insertion of distal locking screws in intra-medullary nails: a valid and reliable navigation system (2005)
Journal Article
Malek, S., Phillips, R., Mohsen, A., Viant, W., Bielby, M., & Sherman, K. (2005). Computer assisted orthopaedic surgical system for insertion of distal locking screws in intra-medullary nails: a valid and reliable navigation system. International Journal of Medical Robotics and Computer Assisted Surgery, 1(4), 34-44. https://doi.org/10.1002/rcs.54

The insertion of distal locking screws is a difficult task in intra-medullary (IM) nailing operations of long bones and contributes a significant proportion to the overall operating time. The current technique to insert these screws uses numerous flu... Read More about Computer assisted orthopaedic surgical system for insertion of distal locking screws in intra-medullary nails: a valid and reliable navigation system.