Browsing by Author "HOLMES, JUSTIN DEREK"
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The complex synthesis and solid state chemistry of ceria-lanthana solid solutions prepared via a hexamethylenetetramine precipitation.
HOLMES, JUSTIN DEREK (Elsevier, 2011)Mixed oxide solid solutions are becoming ever more commercially important across a range of applications. However, their synthesis can be problematical. Here, we show that ceria-lanthana solid solutions can be readily ... -
Doping controlled roughness and defined mesoporosity in chemically etched silicon nanowires with tunable conductivity
HOLMES, JUSTIN DEREK (2013)By using Si(100) with different dopant type (n(++)-type (As) or p-type (B)), we show how metal-assisted chemically etched (MACE) nanowires (NWs) can form with rough outer surfaces around a solid NW core for p-type NWs, ... -
Microwave-assisted synthesis of icosahedral nickel nanocrystals
HOLMES, JUSTIN DEREK; DONEGAN, JOHN FRANCIS (2011)Nickel nanocrystals with icosahedral morphologies have been successfully synthesised using a microwave-assisted irradiation method. Nickel acetylacetonate was used as the metal precursor, while sodium formate and ... -
Novel Pre-oxidation Patterning on Thin Aluminium Film Generating Ordered Nanopores through Anodization
HOLMES, JUSTIN DEREK; CROSS, GRAHAM (2010)Anodic Aluminum Oxide (AAO) is widely employed as a template for fabrication of nanowires and nanotubes due to its ability to generate self organized (SO), well ordered pore structures. We have developed a new aluminum ... -
Self-assembled templates for the generation of arrays of 1-dimensional nanostructures: From molecules to devices
HOLMES, JUSTIN DEREK (Elsevier, 2010)Self-assembled nanoscale porous architectures, such as mesoporous silica (MPS) films, block copolymer films (BCP) and porous anodic aluminas (PAAs), are ideal hosts for templating one dimensional (1D) nano-entities for a ... -
Syntheses of Complex Mesoporous Silicas Using Mixtures of Nonionic Block Copolymer Surfactants: Understanding Formation of Different Structures Using Solubility Parameters
HOLMES, JUSTIN DEREK (Elsevier, 2010)The use of block copolymer (BCP) nonionic surfactant mixtures (including Pluronic, Brij and Tetronic types) as templates for synthesizing porous silica materials of mixed pore sizes is explored here. These systems have ... -
Toroid formation in polystyrene-block-poly(4-vinyl pyridine) diblock copolymers: Combined substrate and solvent control
HOLMES, JUSTIN DEREK (Elsevier, 2010)A polystyrene-block-poly(4-vinyl pyridine) diblock copolymer (PS-b-P4VP) has been used to create nanosized toroid-like structures on nitrided silicon oxide and gold substrates via simple solvent annealing of spun cast ... -
An XPS Study of the Oxidation of Reduced Ceria-Lanthana Nanocrystals
HOLMES, JUSTIN DEREK (Elsevier, 2011)Detailed x-ray photoelectron spectroscopy (XPS) studies on the oxidation of an extensivley cleaned, reduced ceria-lanthana solid solution (12.5 mol% La to Ce) was performed. Uptake of oxygen during oxidation followed a ...