Dr Chris Ewels Publications

 
Publications by year | Publications by type | Posters

  2008
  • 'Carbon nanotube growth mechanism switches from tip- to base-growth with decreasing catalyst particle size'
    A. Gohier, C.P. Ewels, T.M. Minea, M.A. Djouadi
    Carbon, in press, DOI: 10.1016/j.carbon.2008.05.016 (2008).
  • 'Influence of Fe/Cr on nitrogen doped carbon nanotube growth'
    C. P. Ewels, A. Gloter, T. Minea, B. Bouchet-Fabre, S. Point, C. Colliex
    Eur. Phys. J. Appl. Phys., DOI: 10.1051/epjap:2008060 (2008). (open access)
  • 'Oxidation and reactivity of nitrogen and phosphorus doped heterofullerenes'
    C. P. Ewels, H. El Cheikh, I. Suarez Martinez, G. Van Lier
    Phys. Chem. Chem. Phys., 16, 2145-2148 (2008). (and the interior cover)
  • 'Doping of Carbon Nanotubes'
    M. Glerup, V. Krstic, C. P. Ewels, M. Holzinger, G. Van Lier
    To appear in "Doped Nanomaterials and Nanodevices", edited by Wei Chen (to be published, 2008).
  • 'Automated determination of chemical functionalisation addition routes based on magnetic susceptibility and nucleus independent chemical shifts'
    G. Van Lier, C. P. Ewels, P. Geerlings
    Comp. Phys. Commun., 179 165-170 (2008).
  • 'Shaping single walled nanotubes with an electron beam'
    A. Zobelli, A. Gloter, C. P. Ewels, C. Colliex
    Physical Review B 77, 045410 (2008).
    •   2007
  • 'Irradiation damage in graphite from first principles'
    M. Heggie, I. Suarez-Martinez, G. Savini, A. El-Barbary, C. Ewels, R. Telling
    in "Management of Ageing Processes in Graphite Reactor Cores", ISBN:978-0-85404-345-3, Ed. G. B. Neighbour (Royal Society of Chemistry) 83 (8) (2007).
  • 'Seeing the Future'
    C. P. Ewels
    Infocus, Royal Microscopical Society, 6, 4-21 (2007).
  • 'Meta-Code for Systematic Analysis of Chemical Addition (SACHA): Application to Fluorination of C70 and Carbon Nanostructure Growth'
    C. P. Ewels, G. Van Lier, P. Geerlings, J. -C. Charlier
    J. Chem. Inf. Model., 47 (6), 2208-2215 (2007).
  • 'Modelling the effect of doping metallic carbon nanotubes on their ability to transfer-dope diamond'
    S. Sque, C. P. Ewels, R. Jones, P. R. Briddon
    Phys. Status Solidi A, 204 (9), 2898-2902 (2007).
  • 'Stability, thermal homolysis and intermediate phases of solid hydroazafullerene C59HN'
    D. Arcon, M. Pregelj, P. Cevc, G. Rotas, G. Pagona, N. Tagmatarchis and C. P. Ewels,
    Chem. Commun., 3386, DOI: 10.1039/b703766j (2007).
  • 'Overcoming Defects' review of "Extended Defects in Semiconductors"
    C. P. Ewels,
    Chemistry World, 4 (9) 73-74 (2007).
  • 'Women in Carbon Science'
    C. P. Ewels, N. Grobert
    British Carbon Group Newsletter, 34 June (2007).
  • 'Electron knock-on cross section of carbon and boron nitride nanotubes'
    A. Zobelli, A. Gloter, C. P. Ewels, G. Seifert, C. Colliex,
    Physical Review B, 75, 245402 (2007).
  • 'Vacancy migration in hexagonal boron nitride'
    A. Zobelli, C. P. Ewels, A. Gloter, G. Seifert, C. Colliex,
    Physical Review B, 75, 094104 (2007).
  • 'Nitrogen and boron doping in carbon nanotubes'
    C. P. Ewels, M. Glerup, V. Krstic,
    To appear in "Chemistry of Carbon Nanotubes", edited by V. A. Basiuk and E. V. Basiuk (to be published, 2007).
    •   2006

    'Defective Structure of BN Nanotubes: From Single Vacancies to Dislocation Lines'
    A. Zobelli, C. P. Ewels, A. Gloter, G. Seifert, O. Stephan, S. Csillag, C. Colliex,
    Nano Letters 6 (9), 1955-1960 (2006).

    'Pattern formation on carbon nanotubes'
    C. P. Ewels, G. Van Lier, J. -C. Charlier, M. I. Heggie, P. R. Briddon,
    Physical Review Letters, 96 216103 (2006). (download press release).

    'Nitrogen Violation of the Isolated Pentagon Rule'
    C. P. Ewels
    Nano Letters 6 (5), 890-895 (2006).
    (writeup in Nature Blogs.)

    'Kinetic Monte Carlo and Density Functional Study of Hydrogen Enhanced Dislocation Glide in Silicon'
    S. Scarle, C. P. Ewels
    European Physical Journal B, 51, 195-208 (2006).

    'Electron spectroscopy of carbon materials: experiment and theory'
    A. A. El-Barbary, S. Trasobares, C. P. Ewels, O. Stephan, A. V. Okotrub, L. G. Bulusheva, C. J. Fall, M. I. Heggie
    J. Phys. Conf. Series 26 149-152 (2006).

    'From pencils to nanotechnology - the art and design of new molecules'
    An article for the "Art of Prison Survival", a magazine for prisoner artists in the US. (page 10)

      2005

    'Impact of Structure and Morphology on Gas Adsorption of Titanate-Based Nanotubes and Nanoribbons'
    P. Umek, P. Cevc, A. Jesih, A. Gloter, C. P. Ewels, D. Arcon
    Chem. Mater. 17 (24), 5945-5950 (2005).

    'Simulation of the delamination of thin films'
    S. Scarle, C. P. Ewels, M. I. Heggie
    European Physical Journal B - Cond. Mat. 46 4, 529-534 (2005).

    'Review of Nitrogen doping in carbon nanotubes'
    C. P. Ewels, M. Glerup
    J. Nanoscience and Nanotechnology, 5 9, 1345 (2005).

    'Theoretical Analysis of Fluorine addition to Carbon Nanotubes: Functionalisation Routes and Addition Patterns.'
    G. Van Lier, C. P. Ewels, F. Zuliani, A. De Vita, J. -C. Charlier,
    J. Phys. Chem. B, 109(13), 6153-6158 (2005).

    'Theoretical Study of the Addition Patterns of C60 Fluorination: C60Fn (n = 1-60)'
    G. Van Lier, M. Cases, C. P. EWELS, R. Taylor, P. Geerlings,
    J. Org. Chem. 70, 1565-1579 (2005).

    'NO2 gas adsorption on titania-based nanotubes.'
    D. Arcon, P. Umek, P. Cevc, A. Jesih, C. P. Ewels, A. Gloter,
    AIP Conf. Proc. Vol. 786 (1) 335-339 (2005). (abstract, pdf)

    'A spoonful of Graphite : Carbon nanoscience and public health'
    British Carbon Group Newsletter, December 2005 (page 11)

      2004

    'Carbon Nanotubes with Graphitic Wings'
    S. Trasobares, C. P. Ewels, J. Birrell, O. Stephan, B. Q. Wei, J. A. Carlisle, D. Miller, P. Keblinski, P. M. Ajayan,
    Advanced Materials 16 (7), 610-613 (2004) (incl. interior cover art).

    'Linewise kinetic Monte Carlo study of silicon dislocation dynamics',
    S. Scarle, C. P. Ewels, M. I. Heggie et al,
    Phys. Rev. B 69 (7) 075209 (2004).

    'Structure and Energy of the 90 degree Partial Dislocations in Wurtzite-GaN'
    G. Savini, M. I. Heggie, C. P. Ewels, N. Martsinovich, R. Jones, A. T. Blumenau
    Mat. Sci. Forum (2004)

    'Profile : Harry Kroto'
    C. Ewels, Viewfinder, January 2004

      2003

    'Metastable Frenkel Pair Defect in Graphite: Source of Wigner Energy?'
    C. P. EWELS, R. H. Telling, A. A. El-Barbary, M. I. Heggie, P. R. Briddon,
    Physical Review Letters 91, 025505 (2003).

    'Wigner defects bridge the graphite gap'
    R. H. Telling, C. P. EWELS, A. A. El-Barbary, M. I. Heggie,
    Nature Materials 2, 333-337 (2003) (abstract, pdf)

    'Structure and energetics of the vacancy in graphite',
    A. A. El-Barbary, R. H. Telling, C. P. Ewels, M. I. Heggie, P. R. Briddon,
    Phys. Rev. B 68 (14) 144107 (2003).

    'Density functional theory calculations on H defects in Si',
    N. Martsinovich, A. I. Rosa, M. I. Heggie, C. P. Ewels, P. R. Briddon,
    Physica B 340 654 (2003).

    'First-principles calculations on the structure of hydrogen aggregates in silicon and diamond'
    N. Martsinovich, M. I. Heggie, C. P. EWELS,
    J. Phys. Condens. Mater. 15 S2815 (2003) (abstract, pdf).

    'Nanotube alignment and dispersion in epoxy resin'
    C. P. Ewels, G. Desarmot, A. Foutel-Richard, F. Martin,
    AIP Conf. Proc. Vol. 685 (1) 99-102 (2003). (abstract or pdf)

    'Tilting at Windmills'
    Chris Ewels, New Humanist Magazine, September 2003

      2002

    'Glide dislocations in diamond : First-principles calculations of similarities with and differences from silicon and the effects of hydrogen',
    M. I. Heggie, C. P. Ewels, N. Martsinovich, S.Scarle, R. Jones, J. P. Goss, B. Hourahine, P. R. Briddon
    J. Phys. Cond. Matt. 14 (48), 12689 (2002).

    'Adatoms and nanoengineering of carbon'
    C. P. EWELS, M. I. Heggie, P. R. Briddon,
    Chem. Phys. Lett. 351 (3-4), 178-182 (2002)

    'Theory of hydrogen in diamond',
    J. P. Goss, R. Jones, M. I. Heggie, C. P. Ewels, P. R. Briddon, S. Oberg,
    Phys. Rev. B 65 (11) 115207 (2002).

      2001

    'Kinetic Monte Carlo study of dislocation motion in silicon: soliton model and hydrogen enhanced glide'
    S. Scarle, N. Martsinovich, C. P. EWELS, M. I. Heggie,
    Physica B: Cond. Mat., 308-310, 493-496 (2001)

    'Graphitisation at diamond dislocation cores'
    C. P. EWELS, N. T. Wilson, M. I. Heggie, R. Jones, P. R. Briddon,
    J. Phys. Cond. Matt 13 (40), 8965 (2001) (full text).

    'First principles studies of H in diamond'
    J. P. Goss, R. Jones, M. I. Heggie, C. P. EWELS, P. R. Briddon, S. Öberg,
    Phys. Stat. Sol. (a) 186 2, 263-268 (2001). (abstract, full text)

    'A molecular radical model for hydrogen and muonium in graphite'
    S. F. J. Cox, S. P. Cottrell, M. Charlton, P. A. Donnelly, C. EWELS, M. I. Heggie, B. Hourahine,
    J. Phys. Cond. Matt. 13 (10), 2169-2175 (2001). (abstract, full text)

      2000

    'Hydrogen Interaction with dislocations in Si'
    C. P. EWELS, S. Leoni, M. I. Heggie, P. Jemmer, E. Hernández,
    Phys. Rev. Lett. 84 (4) 690 (2000). (abstract, full text)

    'Modelling Carbon for Industry : Radiolytic Oxidation'
    P. Leary, C. P. EWELS, M. I. Heggie, R. Jones, P. R. Briddon,
    Phys. Stat. Sol. (b) 217 1, 429-447 (2000). (abstract, full text)

    'Theory of dislocations in diamond and silicon and their interaction with hydrogen'
    M. I. Heggie, S. Jenkins, C. P. EWELS, P. Jemmer, R. Jones, P. Briddon,
    J. Phys. Cond. Matt. 12 (49), 10263-10270 (2000). (abstract, full text)

      1999

    'Oxygen point defects in silicon'
    C. P. EWELS, R. Jones, in "Properties of Crystalline Silicon", Ed. Robert Hull, EMIS Datareview, INSPEC (1999).

    'Molecular rectification with M|D-sigma-A LB Film|M junctions'
    A. C. Brady, B. Hodder, A. S. Martin, J. Roy Sambles, C. P. EWELS, R. Jones, P. R. Briddon, A. M. Musa, C. A. Panetta, D. L. Mattern,
    J. Mat. Chem. 9 9, 2271 (1999). (full text)

    'Surfing past terrestrial television'
    Chris Ewels, Times Higher Education Supplement, September 17th, 1999.

      1998

    'LDF Calculations of point defects in graphites and fullerenes'
    M. Heggie, B. R. Eggen, C. P. EWELS, P. Leary, S. Ali, G. Jungnickel, R. Jones, P. R. Briddon,
    Electrochem. Soc. Proc. Vol. 98-8, 60-67 (1998). (full text)

    'First stage of oxygen aggregation in silicon: the oxygen dimer'
    S. Öberg, C. P. EWELS, R. Jones, T. Hallberg, J. L. Lindström, L. Murin, P. Briddon,
    Physical Review Letters 81, 2930-33 (1998). (abstract, full text)

    'Dial P for Pizza'
    S. Jenkins, C. EWELS, `Lateral Thoughts', Physics World, 11 (5), 76 (1998).

      1997

    "Density Functional Modelling of point defects in semiconductors" PhD Thesis (Exeter University, 1997). Available as pdf, html, postscript, and others (short abstract).

    'Cyclic cluster model for calculating defects in solids using the local density approximation'
    J. Miro, P. Deak, C. P. EWELS, R. Jones,
    J. Phys. - Cond. Matt, 9 (44), 9555-9562 (1997). (abstract, full text)

    'Shallow Thermal Donor Defects in Silicon'
    C. P. EWELS, R. Jones, S. Öberg, J. Miro, P. Deák, Shallow Level Centers in Semiconductors, ed. C. A. J. Ammerlaan, B. Pajot, World Scientific, Singapore, p.239-244 (1997).

    'Is H passivating Mg Acceptors Bond-centred in InP:Mg and Anti-bonded in GaAs:Mg'
    R. Bouanani-Rabi, B. Pajot, C. P. EWELS, S. Öberg, J. Goss, R. Jones, Y. Nissim, B. Theys, C. Blaauw, Shallow Level Centers in Semiconductors, ed. C. A. J. Ammerlaan, B. Pajot, World Scientific, Singapore, p. (1997).

      1996

    'Oxygen-Carbon, Oxygen-nitrogen and oxygen-dimer defects in Si'
    C. P. EWELS, R. Jones, S. Öberg, in "Early Stages of Oxygen Precipitation in Silicon", ed. R. Jones, Kluwers Academic Press, Series 3, Vol. 17, p.141-163 (1996).

    'Shallow Thermal Donor defects in silicon'
    C. P. EWELS, R. Jones, S. Öberg, J. Miro, P. Deák
    Physical Review Letters, 77 (5), 865-868 (1996). (abstract, full text)

    'Theoretical Studies on nitrogen-oxygen complexes in silicon'
    P. Deák, J. Miro, R. Jones, C. P. EWELS,
    J. Phys. C. : Cond. Matter 8 (41), 7711-7722 (1996). (abstract, full text)

    'Vacancy- and Acceptor- H complexes in InP'
    C. P. EWELS, S. Öberg, R. Jones, B. Pajot, P. R. Briddon
    Semiconductor Science and Technology, 11 1-6 (1996). (abstract, full text)

    'The nitrogen-pair oxygen defect in silicon'
    F. Berg Rasmussen, S. Öberg, R. Jones, C. EWELS, J. Goss, J. Miro, P. Deák,
    Materials Science and Engineering B, 36, 91-95 (1996).

    'The nitrogen-pair oxygen defect in silicon'
    F. Berg Rasmussen, S. Öberg, R. Jones, C. EWELS, J. Goss, J. Miro, and P. Deák, NATO ARW 'Early Stages of Oxygen Precipitation in Silicon', ed. R. Jones, Kluwer Academic Press, Series 3 (17) 319-327 (1996).

      1995

    'Photoinduced changes of hydrogen-bonding in semi-insulating iron-doped InP'
    B. Pajot, C. Y. Song, R. Darwich, F. Gendron, C. EWELS
    Solid State Communications, 95 (12), 851-854 (1995).

    'A First Principles investigation of vacancy oxygen defects in Si'
    C. EWELS, R. Jones, S. Öberg Mat. Sci. Forum Vol. 196-201, 1297-1301 (1995).

    'The NNO defect in Silicon'
    F. Berg Rasmussen, S. Öberg, R. Jones, C. EWELS, J. Goss, J. Miro, P. Deák, Mat. Sci. Forum Vol. 196-201, 791-795 (1995).

    'Vacancy- and acceptor- H complexes in InP'
    C. P. EWELS, S. Öberg, R. Jones, B. Pajot, P. R. Briddon Mat. Sci. Forum Vol. 196-201, 969-973 (1995).

    'The nitrogen-pair oxygen defect in silicon'
    F. Berg Rasmussen, S. Öberg, R. Jones, C. EWELS, J. Goss, J. Miro, P. Deák, E-MRS, Strasbourg (1995)GET REF.

    'H passivated defects in InP'
    C. P. EWELS, S. Öberg, P. Briddon, J. Goss, R. Jones, S. Breuer, R. Darwich, B. Pajot, Solid State Communications 93 5, 459-460 (1995)

    'The Hydrogen complexes in GaAs and InP doped with Magnesium'
    R. Rahbi, B. Pajot, C. EWELS, S. Öberg, J. Goss, R. Jones, Y. Nissim, B. Theys, C. Blaauw, Solid State Communications 93 5, 462 (1995).

    'Modelling of oxygen defects in silicon'
    by Chris Ewels. HCM Newsletter - Psi-k Network - Ab Initio calculation of complex processes in Materials. December 1995. Editor Z. Szotek. (distribution of hundreds, global). (TeX file)

    Flying High #6, News from the CINECA ICARUS Scheme
    Cineca inhouse magazine, July 1995. Article online.

    'Vielkopfige Hydra - Neue Medien verandern die wissenschaftliche Kommunikation' - 'Many-headed Hydra - The new media and scientific communication'
    by Dr. Bernd Eggen and Chris Ewels. (Circulation 6000) Zeitschrift fur Kulturaustausch, p.550, ISSN 0044-2976, E7225F Teil II. (Dec 1995). Publisher: "Institut für Auslandsbeziehungen", Germany. A related link?.

      1994

    'Theoretical and Isotopic Infrared Absorption Investigations of Nitrogen-Oxygen Defects in Silicon'
    R. Jones, C. EWELS, J. Goss, J. Miro, P. Deák, S. Öberg, F. Berg Rasmussen,
    Semiconductor Science and Technology 9, 2145-48, (1994). (abstract, full text)

    'Ab Initio Calculations of Anharmonicity of the C-H stretch mode in HCN and GaAs'
    R. Jones, J. Goss, C. EWELS, S. Öberg
    Physical Review B, 50, 8378-88, (1994). (abstract, full text)


    		  
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    Last modified July 9, 2008