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Article
CH2 group migration between the H-terminated 2×1 reconstructed {100} and {111} surfaces of diamond
Various possible routes for the migration of a CH2 group between the H-terminated 2×1 reconstructed {100} surface and the H-terminated {111} surface of diamond have been explored using a hybrid quantum mechanical...
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Chapter and Conference Paper
Reduction of Threading Dislocations in Epitaxial ZnO Films Grown on Sapphire (0001)
Transmission electron microscopy was used to investigate epitaxial ZnO films on c-sapphire, produced by a two-step method. Firstly, pulsed laser deposition provided a continuous buffer ZnO, with thickness abou...
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Article
Growth of nanostructured ZnO thin films on sapphire
Growth of ZnO nanostructures on c-plane sapphire has been investigated using three different methods. Pulsed laser deposition (PLD) at low incident pulse energies can yield nanorods, the majority of which are ...
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Article
Metal incorporation into nanoporous carbon
Nanoporous carbon films were deposited by 248 nm pulsed laser ablation of a graphite target in different background pressures of argon (PAr). The morphology changed from smooth, high-density amorphous carbon film...
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Article
Phosphorus carbide thin films: experiment and theory
The recent finding that radio frequency plasma activation of CH4/PH3 gas mixtures [7] could lead to films with P:C ratios ≤3 (which also contain ∼10% hydrogen, distributed evenly throughout the bulk) has served t...
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Article
Controlling the size and alignment of ZnO microrods using ZnO thin film templates deposited by pulsed laser ablation
The production of dense arrays of well aligned ZnO nano- and microrods with a controllable distribution of diameters is demonstrated. The rods were grown using a hydrothermal method, on pre-deposited ZnO thin ...
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Article
193-nm laser ablation of CVD diamond and graphite in vacuum: plume analysis and film properties
The pulsed laser ablation of chemical vapor deposition (CVD) diamond and graphite samples in vacuum has been investigated by the use of an ArF excimer laser operating at λ=193 nm. The composition and propagat...
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Chapter
Spectroscopy and Photochemistry of Rydberg States of Small Polyatomic Hydride Molecules
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Article
Resonance enhanced multiphoton ionization (REMPI) and REMPI-photoelectron spectroscopy of ammonia
Resonance enhanced multiphoton ionization (REMPI) spectroscopy, preferably linked with kinetic energy analysis of the resulting photoelectrons (REMPI-photoelectron spectroscopy (PES)), continues to make enormo...
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Article
Excimer laser processing of chemical vapour-deposited diamond fibres
Excimer laser radiation (XeCl, λ = 308 nm and ArF, λ = 193 nm) has been used both to cut chemical vapour-deposited diamond-coated tungsten wires (diamond fibres) of diameter ≤200 μm and to smooth and profile t...
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Article
Laser ablation of diamond fibres and a diamond fibre metal matrix composite
Continuous chemical vapour-deposited diamond-coated fibres with tungsten wire or SiC fibre cores are attractive for reinforcing metals and ceramics. The fibres have been embedded in Ti-6A1-4V alloy to produce ...
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Article
The mechanical Properties of CVD Diamond Films, and Diamond Coated Fibres and Wires
Two areas of thin film property measurement are addressed. The first is that of flat films, either on a substrate or free-standing. The film properties only are of interest. Therefore, when the film remains at...
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Article
The effective chemical vapour deposition rate of diamond
The effective chemical vapour deposition (CVD) rate of diamond, defined as the total thickness of diamond or as the mass of diamond deposited per unit time, may be increased by orders of magnitude by increasin...
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Article
Preparation of solid and hollow diamond fibres and the potential for diamond fibre metal matrix composites
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Chapter
Photodissociation Dynamics of Gas-Phase Small Molecules
Any detailed discussion of the vacuum ultraviolet (VUV) photophysics of simple polyatomic molecules must involve consideration of the strong inter-relation between photochemistry and spectroscopy. The present ...
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Article
Internal-energy distributions in the fragments of IR multiple-photon dissociation
The rotational-energy distributions in CN(X 2 Σ +,ν″ = 0) radicals formed in the IR multiple-photon dissociation of C2H3CN, have been shown to vary markedly with time during the dissociating laser pulse, an effec...
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Article
Infra-red multiple-photon dissociation as a source of reactive free radicals: Methylene revisited
Rate constants for collisional removal of ã1 A 1 CH2 and CD2 have been directly measured for the first time, by using IR multiplephoton dissociation to produce the radicals and time-resolved laser-induced fluores...
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Article
Photodissociation of the cyanogen halides in the vacuum ultraviolet: the influence of initial-state selection
The importance of the initial-state selection in the experimental study of molecular photodissociation is illustrated by recent experiments on energy disposal and rotational polarization in CN(A, B) fragments pro...
