Waldemar Januszczak, John Dugdale, Ellen Bradshaw, Michael Prescott, Karen Krizanovich, Jon Snow, Mark Stretton, Matthew Wall, Barbara Hall, Judith O'Reilly Education Correspondent, Alec Stewart, Christopher Morgan Religious Affairs Correspondent, Vanessa Perry, Jon Swain, Lord Foster, Sally Shillington, James Clark, Nicholas Rufford, Rob Hughes, Alan Hart, S Maguire, Mark Thatcher, Keith Oakley, John Peter, Simon Barnes, Martin James, Amanda Ursell, Karen Wheeler, Harriet Griffey, John Jay, Paul Havranek, J D, Adam Luck, Max Glaskin, Emine Saner, Gareth Walsh, Ivo Tennant, Stephen Brennan, Nicolette Jones, Andrew Swaln, Justin Urquhart Stewart, Sally Payne, Brian Johns, David Smith, Humphrey Carpenter, Thomas Harding, Edin Hamzic, P D, Melanie Rickey, Melanie Phillips, Terry Ward, Mrs P Craig, E P, Andrew Sullivan, Clive Davis, Stephen Grey, Mary Wilson, Guy Dennis, Dr Roger Henderson, David Benedict, Martha Lane-Fox, Tony Allen-Mills, Simon Wilde, John O'Brien, Jeremy Whittle, Chris Fautley, Iain Johnstone, Anthony Sattin, Alison Brace, Adrian Hall, Robert Winnett, Ulla Plon, Sir Alex Ferguson, Irwin Stelzer, Eleanor Mills, Robert Hewison, Peter Wilson, Mark Ottaway, Jane Moore, David Dougill, John Evans, Philip Kingsley, Dominic Tonner, Sarah Toyne, David Hewson, I Jameson, Becky Carroll, Margaret Coles, Jonathon Carr-Brown, Hugh Mcllvanney, Alasdair Reid, Margarette Driscoll, Hugh Canning, Jeremy Clarkson, Stewart Lee, Edward Porter, Peter Conradi, Ian McLeod, John Waples Deputy City Editor, David Cairns, Bob Walker, Jane Renton, Eben Black, Simeon Tegel, Nick Newman's, Kay Adams, John Milne, Sam Murphy, G M Gaber, David Eimer, Andrew Bainbridge, Adam Nathan, Nick Gardner, Brendan Bourne, Richard Johnson, Joe Perry, Phillip Oppenheim, Paul Ham, Stuart Wavell, Ed Hoskins, Mike Laws, Paul Donovan, Sarah Bailey, Robert Bourne's, Alastair Hendy, Ramon Benardout, Norman Kain, Stan Labovitch, James Clark Home Affairs Correspondent, Lucinda Kemeny, Bernard Bourdon-Dese, Smita Talati, Michael Woodhead, Jasper Gerard, John Humphrys, Paul Driver, John Follain, Peter Windsor, Richard Brooks, Clive Simms, Andrew Parr, Ian Hawkey, Nick Gurdner, Christopher Morgan, Angle Buttrose, Chrissie Lee, D A Stephenson, Shelley Von Strunckel, Sue Beenstock, Mark Edwards, Susan Clark, Eben Black Chief Political Correspondent, Meg Ryan, Tim Bell, Danny O'Brien, Deborah Collcutt Consumer Affairs Correspondent, Fraser Nicholson, James Brown, Don Philip, James Tolson, Dr John Sulston, Robert Sandall, Sue Reid, Raymond Keene, Belinda Buckley, Geoff King, Cosmo Landesman, Nigel Thomas, Marie Colvin, June Ducas, Penny Mortimer, Andy Knott, Shella Mawhood, Chris Partridge, Dr Bob Bury, Michael Prescott Political Editor, Stephen Jones, Richard Evans, Paul Nuki, Kate Rew, Caroline Donald, Dominic Rushe, Rob Ryan, Pat Butcher, Claire Oldfield, David Walsh, John Stern, Bryn Palmer, Jack Grimston, S P, Colin McDowell, Lois Rogers Medical Correspondent, Frazer Wright, Chris Waills, Stephen Armstrong, Mandy Francis, Christopher Goodwin, Peter Taylor, Josh Salzmann, Mark Prigg, R W Johnson, Mark Sharon, Roland White, Garth Alexander, Wayne Heidrich, John Aitken, Wayne Bodkin, Maurice Chittenden, Alex Fortune, Kevin Pratt, Laurence Factor, Nicky Haslam, Jane Fryer, Kevin Malloy, Graham Hind, Judith O'Reilly, Richard Rae, Ray Hutton, Magnus Mills, Jon Ungoed-Thomas, John Harrison, Saily Kinnes, Susan Elkin, Maurice McCreanor, Alain De Botton, Michael Sheridan, D J Taylor, Christine Webb, P Brown, Jon Clems, John Harlow, Geoffrey Brees, Alan Hammersley, Godfrey Smith, Dipesh Gadher, James A Benn, John Waples, Paul Rowan, Terry Murden, Jim Keeble, A A Gill, Toby Musgrave, Matthew Campbell, Brian Glanville, Winner's Dinners, Tom Robbins, Harvey Jones, Clarie Oldfield, Stephen Pettitt, Stuart Farmer, David Rixon, Ian Campbell, Jonathan Steel, Sally Kinnes, Andrew Lorenz, Liam Clarke, David Wickers, Michael Axler, Nigel Powell, Tom Rhodes, Christine Ross, Dr Peter Thompson, Mark Hodson, Andrew Frankel, Graham Norwood, Elizabeth Buchan, Joe Lovejoy, Rupert Steiner, Hugh Pearman, Dan Cairns, David Parsley, Phillip Knightley, David Smith Economics Editor, Simon Crerar, Chris Middleton, Ken Hart, Peter Roebuck, Joanna Simon, India Knight, Steve Grant, Simon Howard, Danny Danziger, Lady Annabel Goldsmith, Rosie Waterhouse, Stanley Steward, Kate Constable, Boris Schapiro, Karen Robinson,
... star long weekend in Rome, with the Hotel de Russie and Go Multiple Classified ... Terra Firmer Lord Search & Selection PSD Technology Recruitment Spiers ...
2000 - Gale Group | Sunday Times HA GDA
Niels de Jonge, Myriam Allioux, Jim T. Oostveen, Kenneth B. K. Teo, W. I. Milne,
The figure of merit for the electron optical performance of carbon-nanotube (CNT) electron sources is presented. This figure is given by the relation between the reduced brightness and the energy spread in the region of stable emission. It is shown experimentally that a CNT electron source exhibits a highly stable emission process that follows the Fowler-Nordheim theory for field emission, fixing the relationship among the energy spread, the current, and the radius. The performance of the CNT emitter ...
Tópico(s): Mechanical and Optical Resonators
2005 - American Physical Society | Physical Review Letters
Gráinne Gilmore, Giles Smith, Andrew Robson, Gabriele Marcotti, Phil Yates, Jenny Rogers, Christina Hardyment, Cath Urquhart, Robert Cole, Matthew Syed, David Oldbury, Neelam Verjee, David Brown, Leo Lewis Asia Business Correspondent, Caroline Stacey, Piers Morgan Former Editor, John Munro, Greg Hurst Political Correspondent, Frances Gibb Legal Editor, Amanda Ursell, Simon Barnes, John Doughty, David Aaronovitch, Jane MacQuitty, Peter Lansley, Simon Hills, James Rossiter Property Correspondent, Mark Souster, Claire McDonald, Angus Macleod Scottish Political Editor, John Mulvey, Tony Bennett, Jane Knight, Ivo Tennant, Clare Lazaro, Michael Evans Defence Editor, Philip Howard, Hannah Betts, Paul Dunn, Carol Midgley, John Simpson, Christine Seib, David Chater, Ben Hoyle Arts Reporter, Kate Wighton, James Ducker, Lucky Sweeney, Melissa Katsoulis, James Alexander-Sinclair, Rachel Campbell-Johnston, Clive Davis, Richard Hobson One-Day Cricket Correspondent, Elizabeth Judge, Gabrielle Starkey, Carl Mortished, Jane Taylor-Hayhurst, Graham Stewart, Ginny Dougary, Martin Aston, Jean M. Haczewska, Wendy Ide, Jenny Knight, John Bungey, GrÁinne Gilmore, Lucy Bannerman, Ros Leckie, Chris Sullivan, Joe Joseph, Andrew Norfolk, Geoff Boycott, the former England batsman, Ben Webster Transport Correspondent, Michael Sams, Pat Gibson, Nancy Durrant, Nick Elsley, Hilary Rose, Siobhan Kennedy, Cho Seung Hui, Claire Carter, Jack Malvern, Dominic Walsh, Tom Bawden, Charles Sandeman-Allen, Dan Sabbagh Media Editor, Rebecca Ball, Rachel Holmes, Debra Craine, Gary Jacob, Mike Pattenden, Tom Charity, Victoria Segal, Allan Simmons, Jeanette Winterson, Nick Hasell Banking Correspondent, Jonathan Romain, Roxanne Haskell, Andy Eynon, Candida Crewe, Jo Morris, Paul McKenzie, David Sharrock Ireland Correspondent, Elizabeth Colman, Nick Wyke, Gerry Hanson, Jackie Clements, Rhys Blakely, Jack PeÑate, Richard Lloyd Parry, Peter Davies, David Hands, Tina Gaudoin, Charles Bremner, Ron Lewis, Helen Rumbelow, Adam Sherwin Media Correspondent, Matt Dickinson Chief Football Correspondent, David Charter, Tim Teeman, Greg Dyke, Derwent May, Catherine Bennion-Pedley, Kate Muir, Aggie MacKenzie, Jaffar Al-Rikabi, Tom Whitwell, Hayley Bambrough, Ed Potton, Stephen Anderton, Michael Lynagh, Mark Atherton, Mark Henderson Science Editor, John Westerby, James Harding Business Editor, Julian Evans, Rick Broadbent, Tom Baldwin, Lisa Armstrong, Jane Wheatley, Roger Usherwood, Antonia Senior Personal Finance Editor, Pete Paphides, Sally Baker, Morgan Falconer, Ann Thwaite, Gabriel Rozenberg Economics Repoerter, Simon de Bruxelles, Dr Joan Thomas, Consultant in Respiratory Medicine, Rob Wright, Geoffrey Dean, Dean Jones, Des Browne, the Defence Secretary, Christina Koning, Magnus Grimond, Gabriel Rozenberg, Bernard Lagan, Neil Harman Tennis Correspondent, David Powell Athletics Correspondent, Raymond Keene, Fred R. Shapiro, Luke Leitch, Suzi Godson, Kate Saunders, Matthew Pryor, Cassie Green, Pryderi Gruffydd, Clark Cross, Matt Hughes, Steven Mclaughlin, Rebecca O'Connor, Richard Brass, Salley Vickers, Gordon Ramsay, Jeannette Hyde, Kaveh Solhekol, Peta Bee, Rick Jones, Neville Scott, Chris Campling, Patrick Hosking, Fiona Shaw, Hugh McManners, Christopher Martin-Jenkins Chief Cricket Correspondent, Marcus Leroux, Ross Leckie, Erica Wagner, Marcel Berlins, David Mattin, Eric McGRAW, paul Hoggart, Nick Hasell, Thomasina Miers, Stewart Tendler, Aleks Sierz, Margaret Reynolds, Nell Fisher, David Hands Rugby Correspondent, Tom Dart, Rosemary Bennett Social Affairs Correspondent, George Walden, Paul Simons, Julian Muscat, Michael Herman, Annie Ives, Thomas Quinn's, A. S. Byatt, Nicholas Clee, Nigel Kendall, Gerard Baker US Editor, Nick Szczepanik, Joanna Pitman, Jonathan Clayton, Tom Cox, Robert Crampton, Steve Hawkes, Anne Inman, Kelly Jones, Gitta Sereny, Ian Johns, Dominic Maxwell, Sophie Heawood, Prue White, Matthew Parris, Mark Bridge, Virginia Blackburn, Leah Hardy, Angus Batey, Gary Kemp, Amanda Craig, George Caulkin, Mike Barnard, Tim Wapshott, Thomas Lynch, Caitlin Moran, Michael Austin, Celia Dodd, Iain Finlayson, Robin Martin-Jenkins, Ben MacIntyre, Jeremy Page South Asia Correspondent, Helen Pridham, Tony Dawe, Anna Goldrien, David Hutcheon, Rajeev Syal, Elizabeth Noyes, David Sanderson, Jacqui Goddard, Graham Searjeant, John Naish, Sara Wheeler, Martin Waller, Mark Henderson, Lewis Smith Environment Reporter, Perry Cleveland-Peck, Bob Bury, Patrick Foster, Carl Mortished International Business Editor, Nigel Hawkes Health Editor, The Rev Paul Nicolson, Ashling O'Connor, Benedict Nightingale, Sarah Butler, Mark Baldwin, Hugh McMANNERS, Roger Dobson, Anna Shepard, Louise Cohen, Sam Coates Political Correspondent, Mark Selby, Dr Thomas Stuttaford, Jill Crawshaw, Stephen Dalton, David Powell, Adrian Milledge, Tom Chesshyre, Tony Halpin, Alice Miles, Richard Morrison, James Christopher, Alan Jackson, Alexandra Blair Education Correspondent, Olav Bjortomt, Cath Urquhart Travel Editor, Andrew Riley, Will Hide, Martin Duncan-Jones, Jason Smith, Bryce Elder, Lucy Freeman, Keith Hopcroft, GP, Paul Candy, Christopher Irvine,
... Classical Humperdinck: Hansel und Gretel (DVD) (Euroarts) Lisa Milne, Roderick Williams, Iain Burnside Songs of F. G. ...
2007 - Gale Group | TDA
R. B. Cundall, F. J. Fletcher, D. G. Milne,
The first page of this article is displayed as the abstract.
Tópico(s): Radical Photochemical Reactions
1964 - Royal Society of Chemistry | Transactions of the Faraday Society
Zinc, cupric, and ferric fluorosulfates have been prepared. The Raman and infrared spectra of potassium fluorosulfate and the infrared spectra of calcium, zinc, cupric, and ferric fluorosulfates have been measured from 33 to 4 000 cm −1 . Evidence for covalent bonding in the cupric and ferric fluorosulfates has been found. The magnetic properties of cupric and ferric fluorosulfates have been studied, and ferric fluorosulfate has been found to be magnetically concentrated. The thermal decomposition ...
Tópico(s): Lanthanide and Transition Metal Complexes
1967 - NRC Research Press | Canadian Journal of Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Fluorosulfuric Acid Solvent System. V. Iodine TrifluorosulfateR. J. Gillespie and J. B. MilneCite this: Inorg. Chem. 1966, 5, 7, 1236–1238Publication Date (Print):July 1, 1966Publication History Published online1 May 2002Published inissue 1 July 1966https://pubs.acs.org/doi/10.1021/ic50041a035https://doi.org/10.1021/ic50041a035research-articleACS PublicationsRequest reuse permissionsArticle Views53Altmetric-Citations15LEARN ABOUT THESE METRICSArticle ...
Tópico(s): Inorganic Fluorides and Related Compounds
1966 - American Chemical Society | Inorganic Chemistry
Tetrakis(methyl cyanide) complexes of Cu(I), Cu(II), and Zn(II) fluorosulfates have been prepared by reactions of anhydrous Cu(II) and Zn(II) fluorosulfates in methyl cyanide. The infrared spectra indicate a strong interaction between the fluorosulfate anion and the complex Cu(II) and Zn(II) cations. Conductivity measurements in methyl cyanide show strong association between the fluorosulfate anion and the dipositive cations. The Cu(I) compound is completely dissociated in methyl cyanide and, according ...
Tópico(s): Magnetism in coordination complexes
1970 - NRC Research Press | Canadian Journal of Chemistry
The 220 Bragg reflexion of silicon has been studied in considerable detail. By the Pendellösung fringe method we have measured the atomic scattering factor with an internal consistency of better than 0.1%. Particular care was taken to exclude systematic errors which might arise from elastic strain, X-ray absorption and X-ray polarization effects. The crystal was cut parallel to the Bragg planes at the points of observation so that its thickness could be directly measured with a travelling microscope. ...
Tópico(s): X-ray Spectroscopy and Fluorescence Analysis
1969 - International Union of Crystallography | Acta Crystallographica Section A
The paramagnetic resonance spectrum of Tb4+ in zircon shows that Tb4+ ions enter the tetragonal lattice substitutionally for zirconium. The 8S7/2 ground-state splittings are 23 times as large as those for Gd3+ in this mineral, totalling nearly 10 cm−1.
Tópico(s): Solid-state spectroscopy and crystallography
1969 - IOP Publishing | Journal of Physics C Solid State Physics
A. A. Kiryushkin, Henry M. Fales, T. Axenrod, E. J. Gilbert, G. W. A. Milne,
Abstract The chemical ionization mass spectra of a series of simple peptides containing six or fewer amino acids have been studied. Using methane as the reactant gas we found cleavage of the peptide bond occurs in two ways, yielding either the acyl carbonium ion or the complementary ammonium ion. The observation of both types of fragments permits the determination of the amino acid sequence of the peptide. The ammonium ions provide an additional sequence determining route compared to that available ...
Tópico(s): Diatoms and Algae Research
1971 - Wiley | Organic Mass Spectrometry
The nature of 2/1 Cl/Se and Br/Se stoichiometric mixtures in acetonitrile has been studied by UV-visible and Raman spectroscopy. For both mixtures the selenium dihalide has been shown to be the predominant species in solution, although there are other species present in equilibrium with the dihalide, according to 3SeCl2 = Se2Cl2 + SeCl4 2SeBr2 = Se2Br2 + Br2 as demonstrated by both techniques. The Raman spectra of SeCl2 and SeBr2 are given. Force constant calculations show that the bonds in the dihalides ...
Tópico(s): Solid-state spectroscopy and crystallography
1985 - Elsevier BV | Polyhedron
Michael A. Morgan, Daniel S. Fisher, E. A. Milne,
An analytical formulation is presented for the computation of scattering and transmission by general anisotropic stratified material. This method employs a first-order state-vector differential equation representation of Maxwell's equations whose solution is given in terms of a 4 \times 4 transition matrix relating the tangential field components at the input and output planes of the anisotropic region. The complete diffraction problem is solved by combining impedance boundary conditions at these ...
Tópico(s): Metamaterials and Metasurfaces Applications
1987 - Institute of Electrical and Electronics Engineers | IRE Transactions on Antennas and Propagation
Solutions of TeO 2 (0.001 M) in HCl over a range of concentrations are shown to contain TeCl 2 (OH) 2 in addition to TeCl 6 2− and TeCl 4 (OH) − . The hydrolysis constants for TeCl 6 2− and TeCl 4 (OH) − have been determined from a reconsideration of earlier UV-visible spectrophotometric results (1)[Formula: see text]The hydrolysis constants have also been determined by quantitative Raman spectroscopy (K 1 = 2.21 (± 0.16) × 10 4 M 3 ; K 2 = 442 ± 57 M 3 ). The agreement between K 2 determined by the two methods is good but ...
Tópico(s): Crystal Structures and Properties
1991 - NRC Research Press | Canadian Journal of Chemistry
M. Genut, Z. Li, C. Bauer, S. Mahajan, Pingbo Tang, A. G. Milnes,
The formation and growth of holes and hillocks at grain boundary triple junctions in thin-film conductors of gold on gallium arsenide and thin-film conductors of aluminum-1 wt. % silicon on (oxidized) silicon during the early stages of electromigration have been investigated through measurement of fractional change of electrical resistance ΔR/R and microstructural characterization by scanning and transmission electron microscopy. Each grain boundary triple junction is characterized by a unique structure ...
Tópico(s): Surface and Thin Film Phenomena
1991 - American Institute of Physics | Applied Physics Letters
ADVERTISEMENT RETURN TO ISSUEArticleNEXTVery broad Markush claims; a solution or a problem? Proceedings of a round-table discussion held on August 29, 1990G. W. A. MilneCite this: J. Chem. Inf. Comput. Sci. 1991, 31, 1, 9–30Publication Date (Print):February 1, 1991Publication History Published online1 May 2002Published inissue 1 February 1991https://pubs.acs.org/doi/10.1021/ci00001a003https://doi.org/10.1021/ci00001a003research-articleACS PublicationsRequest reuse permissionsArticle Views123Altmetric- ...
Tópico(s): Machine Learning in Materials Science
1991 - American Chemical Society | Journal of Chemical Information and Computer Sciences
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic evidence for selenium iodides in carbon disulfide solution: Se3I2, Se2I2, and SeI2Madhuban Gopal and John MilneCite this: Inorg. Chem. 1992, 31, 22, 4530–4533Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/ic00048a017https://doi.org/10.1021/ic00048a017research-articleACS PublicationsRequest reuse permissionsArticle Views197Altmetric-Citations22LEARN ...
Tópico(s): Optical properties and cooling technologies in crystalline materials
1992 - American Chemical Society | Inorganic Chemistry
D. Riley, Mark Mann, Donald A. MacLaren, Paul C. Dastoor, W. Allison, Kenneth B. K. Teo, G.A.J. Amaratunga, W. I. Milne,
A novel, high-efficiency detector for neutral atoms such as helium is described. The design uses multiwalled carbon nanotubes (MWNTs), grown by chemical vapor deposition on a steel support wire. Application of a positive bias to the MWNTs generates electric fields sufficient to field-ionize passing gas-phase atoms. Under ultrahigh vacuum conditions, the detector was demonstrated to be capable of ionising and detecting even helium gas, the element with the highest ionization potential.
Tópico(s): Graphene research and applications
2003 - American Chemical Society | Nano Letters
Jikui Luo, Yongqing Fu, Huirong Le, John A. Williams, S.M. Spearing, WI Milne,
Diamond and diamond-like carbon (DLC) thin films possess a number of unique and attractive material properties that are unattainable from Si and other materials. These include high values of Young's modulus, hardness, tensile strength and high thermal conductivity, low thermal expansion coefficient combined with low coefficients of friction and good wear resistance. As a consequence, they are finding increasing applications in micro-electro-mechanical systems (MEMS). This paper reviews these distinctive ...
Tópico(s): Force Microscopy Techniques and Applications
2007 - IOP Publishing | Journal of Micromechanics and Microengineering
Jikui Luo, R. T. Huang, He Jia, Yongqing Fu, Andrew J. Flewitt, S.M. Spearing, N.A. Fleck, W. I. Milne,
Tópico(s): Mechanical and Optical Resonators
2006 - Elsevier BV | Sensors and Actuators A Physical
Kenneth B. K. Teo, E. Minoux, L. Hudanski, F. Peauger, J. P. Schnell, L. Gangloff, P. Legagneux, D. Dieumegard, G.A.J. Amaratunga, W. I. Milne,
To communicate, spacecraft and satellites rely on microwave devices, which at present are based on relatively inefficient thermionic electron sources that require heating and cannot be switched on instantaneously. Here we describe a microwave diode that uses a cold-cathode electron source consisting of carbon nanotubes1 and that operates at high frequency and at high current densities. Because it weighs little, responds instantaneously and has no need of heating, this miniaturized electron source ...
Tópico(s): Graphene research and applications
2005 - Nature Portfolio | Nature
Raman and Se-77 NMR spectroscopy confirm that when selenous acid is reduced by thiosulfate in water selenopentathionate and tetrathionate are formed.[Formula: see text]Depending upon the stoichiometry and pH, two isomers of the selenopentathionate ion, O- and S-bonded, are formed. Insufficiently acid solutions cause decomposition to selenium and tetrathionate ion.[Formula: see text]Fresh solutions prepared from crystalline sodium selenopentathionate and water undergo slow decompositon. NMR and Raman ...
Tópico(s): Crystal Structures and Properties
1996 - NRC Research Press | Canadian Journal of Chemistry
B. Satyanarayana, John Robertson, WI Milne,
Nanocluster carbon films grown using a cathodic arc process at room temperature in the presence of background gases such as He are found to be good electron emitters. The variation in the surface morphology and the corresponding emission characteristics of the films with change in helium partial pressure (5×10−4–50 Torr) during the film growth are reported. The effect of helium partial pressure on clustering was studied for films grown at nitrogen partial pressures of 10−4 and 10−3 Torr. The surface ...
Tópico(s): Fullerene Chemistry and Applications
2000 - American Institute of Physics | Journal of Applied Physics
Jingbiao Cui, K. B. K. Teo, Jeff T. H. Tsai, John Robertson, WI Milne,
We investigated the electron field emission characteristics of carbon films deposited by filtered cathodic vacuum arc. A special sandwich structure was created using alternating layers of carbon and aluminum. This structure allows both field emission and dc current–voltage characteristics to be measured on the same film. The emission current was found to follow the Fowler–Nordheim law below a critical field, Ecri. Above Ecri, the current deviates from the Fowler–Nordheim law but follows the dc current– ...
Tópico(s): Carbon Nanotubes in Composites
2000 - American Institute of Physics | Applied Physics Letters
Marc C. Nicklaus, Shaomeng Wang, John S. Driscoll, G. W. A. Milne,
Flexible molecules change their conformation upon binding to a protein. This was shown by the analysis of small molecules whose structures have been determined by X-ray crystallography of both the pure compound and the compound bound to a protein. Thirty-three compounds present both in the Cambridge Structural Database and the Brookhaven Protein Data Bank were analyzed, and both were compared with the global energy minimum conformation calculated by the molecular mechanics program CHARMm. It was ...
Tópico(s): Computational Drug Discovery Methods
1995 - Elsevier BV | Bioorganic & Medicinal Chemistry
Elemental selenium dissolves in sulfite solution to form selenosulfate ion: Se + SO 3 2− = SeSO 3 2− .The formation constants for this equilibrium at temperatures from 0 to 35 °C are reported for the first time. The isomeric thioselenate anion, SSeO 3 2− , is not, however, produced by the reaction of sulfur with selenite nor is the selenoselenate ion, Se 2 O 3 2− , formed from selenium and selenite. Selenotrithionate is formed rapidly from the reaction of selenous acid with sulfite and hydrogen sulfite according ...
Tópico(s): Analytical chemistry methods development
1995 - NRC Research Press | Canadian Journal of Chemistry
G. Pirio, P. Legagneux, Didier Pribat, K. B. K. Teo, Manish Chhowalla, G.A.J. Amaratunga, W. I. Milne,
We report on the fabrication of field emission microcathodes which use carbon nanotubes as the field emission source. The devices incorporated an integrated gate electrode in order to achieve truly low-voltage field emission. A single-mask, self-aligned technique was used to pattern the gate, insulator and catalyst for nanotube growth. Vertically-aligned carbon nanotubes were then grown inside the gated structure by plasma-enhanced chemical vapour deposition. Our self-aligned fabrication process ...
Tópico(s): Graphene research and applications
2001 - IOP Publishing | Nanotechnology
K. W. R. Gilkes, H. S. Sands, D. N. Batchelder, John Robertson, WI Milne,
The vibrational modes of the sp3 sites in tetrahedral amorphous carbon (ta-C) thin films are revealed directly using ultraviolet Raman spectroscopy at 244 nm excitation and are shown to produce a Raman peak centered around 1100 cm−1. In addition, the main Raman peak associated with sp2 vibrational modes is shifted upward in frequency by 100 cm−1 relative to its position in spectra excited at 514 nm. The spectra are interpreted in terms of the bonding in ta-C.
Tópico(s): Carbon Nanotubes in Composites
1997 - American Institute of Physics | Applied Physics Letters
V. I. Merkulov, J. S. Lannin, C. H. Munro, Sanford A. Asher, V.S. Veerasamy, W. I. Milne,
We report ultraviolet (uv) Raman scattering studies of hydrogen-free, diamondlike amorphous carbon thin films with a wide range of tetrahedral bonding. The uv Raman spectra are shown to provide direct evidence for the presence of s${\mathrm{p}}^{3}$-bonded C atoms in these materials. The experimental results are found to be in excellent agreement with theoretical predictions and contribute to an improved understanding of the mechanism by which the diamondlike fraction develops within the amorphous ...
Tópico(s): Glass properties and applications
1997 - American Physical Society | Physical Review Letters
Karol Nass, Camila Bacellar, Claudio Cirelli, Florian Dworkowski, Y. Gevorkov, Daniel James, Philip J. M. Johnson, Demet Kekilli, G. Knopp, Isabelle Martiel, D. Ozerov, A. Tolstikova, Laura Vera, Tobias Weinert, Oleksandr Yefanov, Jörg Standfuss, S. Reiche, Christopher J. Milne,
Serial femtosecond crystallography (SFX) at X-ray free-electron lasers (XFELs) enables essentially radiation-damage-free macromolecular structure determination using microcrystals that are too small for synchrotron studies. However, SFX experiments often require large amounts of sample in order to collect highly redundant data where some of the many stochastic errors can be averaged out to determine accurate structure-factor amplitudes. In this work, the capability of the Swiss X-ray free-electron ...
Tópico(s): Advanced Electron Microscopy Techniques and Applications
2021 - International Union of Crystallography | IUCrJ
Edward M. Burgess, G. W. A. Milne,
Tópico(s): Photochromic and Fluorescence Chemistry
1966 - Elsevier BV | Tetrahedron Letters