Outputs (497)

Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing (2006)
Presentation / Conference Contribution
Houlston, P. R., Garvey, S. D., & Popov, A. A. Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing. Presented at 7th IFToMM Conference on Rotor Dynamics

In the context of active control of rotating machines, standard optimal controller methods enable a trade-off to be made between (weighted) mean-square vibrations and (weighted) mean-square currents injected into magnetic bearings. One shortcoming of... Read More about Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing.

Structural characterisation of spintronic GaMnAs and GaMnN heterostructures grown by molecular beam epitaxy (2005)
Book Chapter
Fay, M. W., Han, Y., Novikov, S. V., Edmonds, K., Wang, K., Gallagher, B., Campion, R., Foxon, C., & Brown, P. D. (2005). Structural characterisation of spintronic GaMnAs and GaMnN heterostructures grown by molecular beam epitaxy. In A. Cullis, & A. Hutchison (Eds.), Microscopy of semiconducting materials: proceedings of the 14th conference: April 11-14, 2005, Oxford, UK. Springer-Verlag

Observations of orthogonal orientations demonstrate the development of banded contrast features on inclined {-1-1-1}B planes for the [110] projection within micron thick samples, attributed to a compositional fluctuation in the Mn content. The relat... Read More about Structural characterisation of spintronic GaMnAs and GaMnN heterostructures grown by molecular beam epitaxy.

Structural characterisation of MBE grown zinc-blende Ga1-xMnxN/GaAs(001) as a function of Ga flux (2005)
Book Chapter
Han, Y., Fay, M. W., Brown, P. D., Novikov, S. V., Edmonds, K., Gallagher, B., Campion, R., & Foxon, C. (2005). Structural characterisation of MBE grown zinc-blende Ga1-xMnxN/GaAs(001) as a function of Ga flux. In A. Cullis, & J. Hutchison (Eds.), Microscopy of semiconducting materials: proceedings of the 14th conference: April 11-14, 2005, Oxford, UK. Springer-Verlag

Ga1-xMnxN films grown on semi-insulating GaAs(001) substrates at 680°C with fixed Mn flux and varied Ga flux demonstrated a transition from zinc-blende/wurtzite mixed phase growth for low Ga flux (N-rich conditions) to zinc-blende single phase growth... Read More about Structural characterisation of MBE grown zinc-blende Ga1-xMnxN/GaAs(001) as a function of Ga flux.

Structural characterisation of carbon nanotubes in the presence of a Ni catalyst (2004)
Book Chapter
Edwards, H., Fay, M. W., Bououdina, M., Gregory, D., Walker, G., & Brown, P. D. (2004). Structural characterisation of carbon nanotubes in the presence of a Ni catalyst. In S. McVitie, & D. McComb (Eds.), Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003. Institute of Physics Publishing

Multi-wall carbon nanotubes (MWNTs) grown by chemical vapour deposition (CVD) of an ethene / hydrogen gas mixture on alumina supported and unsupported nickel catalysts for 10, 20 and 120 minutes at 600oC and 700oC are compared. Nano-scale nickel part... Read More about Structural characterisation of carbon nanotubes in the presence of a Ni catalyst.

Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings (2004)
Book Chapter
Kong, C.-J., Moldovan, G., Fay, M. W., McCartney, D. G., & Brown, P. D. (2004). Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings. In S. McVitie, & D. McComb (Eds.), Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003. Institute of Physics Publishing

High velocity oxy-liquid fuel (HVOLF) AlSnCu coatings are characterised following annealing for up to 5 hours at 300°C. A combination of statistical analysis of BSE images and TEM observations demonstrate the decrease in the number of sub-micron and... Read More about Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings.

The application of tripod polishing and focused ion beam milling to the TEM specimen preparation of HVOF thermally sprayed coatings (2004)
Book Chapter
Kong, G., McCartney, D. G., & Brown, P. D. (2004). The application of tripod polishing and focused ion beam milling to the TEM specimen preparation of HVOF thermally sprayed coatings. In S. McVitie, & D. McComb (Eds.), Electron microscopy and analysis 2003: proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003. Institute of Physics Publishing

The microstructure of high velocity oxy fuel thermally sprayed coatings is highly anisotropic and inhomogeneous. Tripod polishing has enabled the preparation of samples with up to 0.5mm diameter electron transparent areas, where a statistically signi... Read More about The application of tripod polishing and focused ion beam milling to the TEM specimen preparation of HVOF thermally sprayed coatings.

Scanning electron microscopy of biomaterials (2004)
Book Chapter
McKinlay, K., Scotchford, C., Grant, D., Oliver, J., King, J. R., & Brown, P. D. (2004). Scanning electron microscopy of biomaterials. In S. McVitie, & D. McComb (Eds.), Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Oxford, 3-5 September 2003. Institute of Physics Publishing

A comparison of conventional high vacuum scanning electron microscopy (HVSEM), environmental SEM (ESEM) and confocal laser scanning microscopy (CLSM) in the assessment of cell-material interactions is made. The processing of cells cultured for conven... Read More about Scanning electron microscopy of biomaterials.

EBIC study of Au / n-type GaN Schottky contacts (2003)
Book Chapter
Moldovan, G., Harrison, I., & Brown, P. D. (2003). EBIC study of Au / n-type GaN Schottky contacts. In A. Cullis, & P. Midgley (Eds.), Microscopy of semiconducting materials 2003 : proceedings of the Institute of Physics conference, Cambridge University, 31 March - 3 April 2003. IOP Publishing Ltd

The performance of Au / n-type GaN Schottky contacts is strongly dependent on the GaN surface processing prior to contacting. Current-voltage and EBIC line scans demonstrate that KOH treatment acts to degrade the Schottky contacts. EBIC imaging rev... Read More about EBIC study of Au / n-type GaN Schottky contacts.

Micro-thermal analysis of NiTi shape memory alloy thin films (2002)
Journal Article
Zhang, J., Botterill, N. W., Roberts, C. J., & Grant, D. M. (2003). Micro-thermal analysis of NiTi shape memory alloy thin films. Thermochimica Acta, 401(2), 111-119. https://doi.org/10.1016/S0040-6031%2802%2900502-6

A novel technique of micro-thermal analysis (micro-TA) has been used to investigate martensitic to austenitic transformations of near equi-atomic NiTi shape memory alloy (SMA) thin films deposited on silicon wafer by a plasma assisted sputter deposit... Read More about Micro-thermal analysis of NiTi shape memory alloy thin films.

Microstructural characterisation of a high velocity oxy-fuel thermally sprayed Al-12wt.%Sn-1wt.%Cu alloy (2001)
Book Chapter
Kong, C.-J., Brown, P. D., Horlock, A. J., Harris, S. J., & McCartney, D. G. (2001). Microstructural characterisation of a high velocity oxy-fuel thermally sprayed Al-12wt.%Sn-1wt.%Cu alloy. In M. Aindow, & C. Kiely (Eds.), Electron microscopy and analysis 2001: proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Dundee, 5-7 September 2001. IOP Publishing Ltd

High velocity oxy-fuel thermal sprayed Al-12wt.%Sn-1wt.%Cu alloy coatings have been characterised both in the as-sprayed condition and following heat treatment in air at 300C for periods up to 5 hours. The as-sprayed microstructure comprises princip... Read More about Microstructural characterisation of a high velocity oxy-fuel thermally sprayed Al-12wt.%Sn-1wt.%Cu alloy.