Search Results - "Ashfold, M. N. R."

A Multipronged Comparative Study of the Ultraviolet Photochemistry of 2‑, 3‑, and 4‑Chlorophenol in the Gas Phase by Harris, S. J, Karsili, T. N. V, Murdock, D, Oliver, T. A. A, Wenge, A. M, Zaouris, D. K, Ashfold, M. N. R, Harvey, J. N, Few, J. D, Gowrie, S, Hancock, G, Hadden, D. J, Roberts, G. M, Stavros, V. G, Spighi, G, Poisson, L, Soep, B

“…The S1(1ππ*) state of the (dominant) syn-conformer of 2-chlorophenol (2-ClPhOH) in the gas phase has a subpicosecond lifetime, whereas the corresponding S1…”
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Optical Emission from C2 – Anions in Microwave-Activated CH4/H2 Plasmas for Chemical Vapor Deposition of Diamond by Mahoney, E. J. D, Truscott, B. S, Ashfold, M. N. R, Mankelevich, Yu. A

“…Visible emission from C2 –(B2Σu +) anions has been identified underlying the much stronger Swan band emission from neutral C2(d3Πg) radicals (henceforth C2 –*…”
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Role of πσ Excited States in the Photodissociation of Heteroaromatic Molecules by Ashfold, M.N.R, Cronin, B, Devine, A.L, Dixon, R.N, Nix, M.G.D

“…High-resolution measurements of the kinetic energies of hydrogen atom fragments formed during ultraviolet photolysis of imidazole, pyrrole, and phenol in the…”
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Airborne hydrogen cyanide measurements using a chemical ionisation mass spectrometer for the plume identification of biomass burning forest fires by Le Breton, M., Bacak, A., Muller, J. B. A., O'Shea, S. J., Xiao, P., Ashfold, M. N. R., Cooke, M. C., Batt, R., Shallcross, D. E., Oram, D. E., Forster, G., Bauguitte, S. J.-B., Palmer, P. I., Parrington, M., Lewis, A. C., Lee, J. D., Percival, C. J.

“…A chemical ionisation mass spectrometer (CIMS) was developed for measuring hydrogen cyanide (HCN) from biomass burning events in Canada using I− reagent ions…”
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Application of a Quantum Cascade Laser for Time-Resolved, in Situ Probing of CH4/H2 and C2H2/H2 Gas Mixtures during Microwave Plasma Enhanced Chemical Vapor Deposition of Diamond by Cheesman, A, Smith, J. A, Ashfold, M. N. R, Langford, N, Wright, S, Duxbury, G

“…First illustrations of the utility of pulsed quantum cascade lasers for in situ probing of the chemistry prevailing in microwave plasma activated…”
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Fabrication of high density, adherent films of five-fold symmetric diamond crystals by hot filament chemical vapour deposition by Wei, Qiuping, Ashfold, M.N.R., Yu, Z.M., Ma, Li, Yin, D.F.

“…Five-fold symmetric diamond crystals (FSDCs) have been grown on a large variety of substrates by hot filament chemical vapour deposition (CVD) methods. High…”
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Synthesis of Aligned Arrays of Ultrathin ZnO Nanotubes on a Si Wafer Coated with a Thin ZnO Film by Sun, Y., Fuge, G. M., Fox, N. A., Riley, D. J., Ashfold, M. N. R.

“…Aligned arrays of ultrathin, high‐quality ZnO nanotubes (see Figure) have been synthesized via hydrothermal growth methods on Si that has been pre‐coated with…”
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Polarity determination of zinc oxide nanorods by defocused convergent-beam electron diffraction by Nicholls, D. P., Vincent, R., Cherns, D., Sun, Y., Ashfold, M. N. R.

“…The crystal polarity of wurtzite zinc oxide nanorods grown hydrothermally parallel to the c = [0001] direction has been determined by convergent-beam electron…”
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Optical Emission from C 2 - Anions in Microwave-Activated CH 4 /H 2 Plasmas for Chemical Vapor Deposition of Diamond by Mahoney, E J D, Truscott, B S, Ashfold, M N R, Mankelevich, Yu A

“…Visible emission from C (B Σ ) anions has been identified underlying the much stronger Swan band emission from neutral C (d Π ) radicals (henceforth C * and C…”
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Substrate surface patterning by optical near field modulation around colloidal particles immersed in a liquid by Ulmeanu, M, Petkov, P, Ursescu, D, Jipa, F, Harniman, R, Brousseau, E, Ashfold, M N R

“…Optical near field enhancements in the vicinity of particles illuminated by laser light are increasingly recognized as a powerful tool for nanopatterning…”
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3-D patterning of silicon by laser-initiated, liquid-assisted colloidal (LILAC) lithography by Ulmeanu, M., Grubb, M.P., Jipa, F., Quignon, B., Ashfold, M.N.R.

“…[Display omitted] •We report a comprehensive study of laser-initiated, liquid-assisted colloidal (LILAC) lithography.•The method combines single shot laser…”
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Diamond chemical vapor deposition using a zero-total gas flow environment by Croot, A., Mahoney, E.J.D., Dominguez-Andrade, H., Ashfold, M.N.R., Fox, N.A.

“…We demonstrate diamond growth through microwave plasma-enhanced chemical vapor deposition using a sealed (static-mode) CH4/H2 process gas mixture. The growth…”
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Highly conductive nanoclustered carbon:nickel films grown by pulsed laser deposition by Jayawardena, K.D.G.I., Tan, Y.Y., Fryar, J., Shiozawa, H., Silva, S.R.P., Henley, S.J., Fuge, G.M., Truscott, B.S., Ashfold, M.N.R.

“…An enhancement by 5 orders of magnitude of the electrical conductivity of nanoclustered carbon films is reported by incorporation of metallic atoms, but…”
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Corrigendum to "Airborne hydrogen cyanide measurements using a chemical ionisation mass spectrometer for the plume identification of biomass burning forest fires" published in Atmos. Chem. Phys., 13, 9217–9232, 2013 by Le Breton, M., Bacak, A., Muller, J. B. A., O'Shea, S. J., Xiao, P., Ashfold, M. N. R., Cooke, M. C., Batt, R., Shallcross, D. E., Oram, D. E., Forster, G., Bauguitte, S. J.-B., Palmer, P. I., Parrington, M., Lewis, A. C., Lee, J. D., Percival, C. J.

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Controlling the size and alignment of ZnO microrods using ZnO thin film templates deposited by pulsed laser ablation by HENLEY, S. J, ASHFOLD, M. N. R, NICHOLLS, D. P, WHEATLEY, P, CHERNS, D

“…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…”
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Dynamics of confined plumes during short and ultrashort pulsed laser ablation of graphite by HENLEY, S. J, CAREY, J. D, SILVA, S. R. P, FUGE, G. M, ASHFOLD, M. N. R, ANGLOS, D

“…The optical emission from electronically excited C species in the ablation plume following the short (ns) and ultrashort (fs) UV pulsed laser ablation of…”
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Laser Raman and X-ray photoelectron spectroscopy of phosphorus containing diamond-like carbon films grown by pulsed laser ablation methods by Fuge, G.M., May, P.W., Rosser, K.N., Pearce, S.R.J., Ashfold, M.N.R.

“…Mechanically hard, electrically conducting diamond-like carbon (DLC) films containing 0 to ∼26 at.% phosphorus have been deposited on both Si and quartz…”
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The effective chemical vapour deposition rate of diamond by PARTRIDGE, P. G, ASHFOLD, M. N. R, MAY, P. W, NICHOLSON, E. D

“…The effective 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…”
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Excimer laser processing of chemical vapour-deposited diamond fibres by MEADEN, G, PARTRIDGE, P. G, JOHNSON, S. E, LADE, R. J, NICHOLSON, E. D, ASHFOLD, M. N. R

“…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…”
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Laser ablation of diamond fibres and a diamond fibre metal matrix composite by MEADEN, G, PARTRIDGE, P. G, ASHFOLD, M. N. R, NICHOLSON, E. D, WISBEY, A

“…Continuous chemical vapor-deposited diamond-coated fibres with tungsten wire or SiC fibre cores are attractive for reinforcing metals and ceramics. The fibres…”
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