Browsing Materials Research by Title

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Browsing Materials Research by Title

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  • Reduction of multiple triggering in counting detectors 
    Langstaff, David; Zhu, Xi (2009-06-01)
    We present a scheme for reducing multiple triggering based on a “first-past-the-post” voting circuit interposed between the sensor amplifier/discriminators and the counters in an event-counting detector. We are currently ...
  • The Relationship between Nanoscale Architecture and Charge Transport in Conjugated Nanocrystals Bridged by Multichromophoric Polymers 
    Dabirian, Reza; Palermo, Vincenzo; Liscio, Andrea; Schwartz, Erik; Otten, Matthijs B. J.; Finlayson, Christopher Edward; Treossi, Emanuele; Friend, Richard H.; Calestani, Gianluca; Muellen, Klaus; Nolte, Roeland J. M.; Rowan, Alan E.; Samori, Paolo (2009-05-27)
    We report on the self-assembly and the electrical characterization of bicomponent films consisting of an organic semiconducting small molecule blended with a rigid polymeric scaffold functionalized in the side chains with ...
  • Relationship between topological order and glass forming ability in densely packed enstatite and forsterite composition glasses 
    Kohara, S.; Akola, J.; Morita, H.; Suzuya, K.; Weber, J. K. R.; Wilding, M. C.; Benmore, C. J. (2011-09-06)
    The atomic structures of magnesium silicate melts are key to understanding processes related to the evolution of the Earth's mantle and represent precursors to the formation of most igneous rocks. Magnesium silicate ...
  • Selecting the geology filter wavelengths for the ExoMars Panoramic Camera Instrument 
    Cousins, Claire R.; Gunn, Matthew; Prosser, Bryan J.; Barnes, Dave P.; Crawford, Ian A.; Griffiths, Andrew D.; Davis, Lottie E.; Coates, Andrew J. (2012-10)
    The Panoramic Camera (PanCam) instrument will provide surface remote sensing data for the ExoMars mission. A combination of wide-angle stereo, multispectral, and high resolution imagery will generate contextual geological ...
  • Sequential Energy and Electron Transfer in Polyisocyanopeptide-Based Multichromophoric Arrays 
    Huang, Ya-Shih; Yang, Xudong; Schwartz, Erik; Lu, Li Ping; Albert-Seifried, Sebastian; Finlayson, Christopher Edward; Koepf, Matthieu; Kitto, Heather J.; Ulgut, Burak; Otten, Matthijs B. J.; Cornelissen, Jeroen J. L. M.; Nolte, Roeland J. M.; Rowan, Alan E.; Friend, Richard H. (2011-02-24)
    We report on the synthesis and detailed photophysical investigation of four model chromophore side chain polyisocyanopeptides: two homopolymers of platinum-porphyrin functionalized polyisocyanopeptides (Pt-porphyrin-PIC) ...
  • Stretching polymer opal fibers tunes structural color 
    Finlayson, Christopher Edward; Snoswell, David R. E.; Spahn, Peter; Baumberg, Jeremy J. (2011-06)
    Polymer opal photonic-crystal fibers containing self-assembled submicron core-shell particles exhibit stretch-tunable color. These mechanically robust fibers can be produced in an industrially scalable extrusion process.
  • Structural studies and polymorphism in amorphous solids and liquids at high pressure 
    Wilding, Martin C.; Wilson, Mark; McMillan, Paul F. (2006-08-30)
    When amorphous materials are compressed their structures are expected to change in response to densification. In some cases, the changes in amorphous structure can be discontinuous and they can even have the character of ...
  • Structure and energetics of hydroxylated silica cluaters, (SiO2)M(H2O)N, M=8,16 and N=1-4: A global optimisation study 
    Flikkema, Edwin; Jelfs, Kim E.; Bromley, Stefan T. (2012-12-03)
    The low energy isomer spectrum of hydroxylated silica clusters, (SiO2)M(H2O)N, is investigated using global optimisation with an empirical potential and ab initio structural and energetic refinement. The cases M = 8, 16 ...
  • Structure of glasses and melts 
    Wilding, Martin C.; Benmore, C. J. (2006-01)
    The liquid state dominates terrestrial and planetary processes. The history of the early solar system for example involved the accretion of primarily molten bodies. In cooler temperature regimes, interplanetary dust, comets ...
  • The structure of MgO-SiO2 glasses at elevated pressure 
    Wilding, Martin; Guthrie, Malcolm; Kohara, Shinji; Bull, Craig L.; Akola, Jaakko; Tucker, Matt G. (2012-06-06)
    The magnesium silicate system is an important geophysical analogue and neutron diffraction data from glasses formed in this system may also provide an initial framework for understanding the structure-dependent properties ...
  • Structure of molten yttrium aluminates: a neutron diffraction study 
    Cristiglio, V.; Hennet, L.; Cuello, G. J.; Pozdnyakova, I.; Johnson, M. R.; Fischer, H. E.; Zanghi, D.; Vu Van, Q.; Wilding, Martin C.; Greaves, Neville; Price, D. L. (2007)
    We used the aerodynamic levitation technique combined with CO2 laser heating to study the structure of liquid yttrium aluminates above theirmelting point with neutron diffraction. For various yttria contents, we determined ...
  • Temperature-dependent structural heterogeneity in calcium silicate liquids 
    Benmore, C. J.; Weber, J. K. R.; Wilding, M. C.; Du, J.; Parise, J. B. (2010-12-01)
    X-ray diffraction measurements performed on aerodynamically levitated CaSiO(3) droplets have been interpreted using a structurally heterogeneous liquid-state model. When cooled, the high-temperature liquid shows evidence ...
  • Two million hours of science 
    Greaves, G. N.; Catlow, C. R. A.; Derbyshire, G. E.; McMahon, M. I.; Nelmes, R. J.; Van der Lann, G. (2008-11-01)
    After over a quarter of a century, the doors of the world's first synchrotron radiation source have closed. Its contribution to materials science in the past and the future should not be underestimated.
  • X-ray and neutron diffraction studies and MD simulation of atomic configurations in polyamorphic Y2O3-Al2O3 systems 
    Wilding, Martin C.; Wilson, M.; McMillan, P. F. (2005-02-15)
    Supercooled liquids in the Y2O3-Al2O3 system undergo a liquid–liquid phase transition between a high–temperature, high–density amorphous (HDA) polymorph form and one with lower density (LDA form) that is stable at lower ...
  • Yttria-zirconia coatings studied by grazing-incidence small-angle X-ray scattering during in situ heating 
    Hoydalsvik, Kristin; Barnardo, Twilight; Winter, Rudolf; Haas, Sylvio; Tatchev, Dragomir; Hoell, Armin (2010-09-20)
    The morphology of sol–gel derived dip-coated yttria-doped zirconia films containing variable amounts of yttria has been studied using in situ grazing-incidence small-angle X-ray scattering (GISAXS) whilst heated incrementally ...

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