Search Results - "Howells, W. S"
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Relaxation in polymer electrolytes on the nanosecond timescale
Published in Nature (London) (11-05-2000)“…The relation between mechanical and electrical relaxation in polymer/lithium-salt complexes is a fascinating and still unresolved problem in condensed-matter…”
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Dynamics of Fresh and Freeze-Dried Strawberry and Red Onion by Quasielastic Neutron Scattering
Published in The journal of physical chemistry. B (20-07-2006)“…The microscopic behavior of fresh and freeze-dried strawberry and red onion at different water contents (45 and 20 wt % water) has been investigated by…”
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Dynamics of propylene glycol and its oligomers confined in clay
Published in The European physical journal. E, Soft matter (Print) (01-09-2003)“…The dynamics of propylene glycol (PG) and its oligomers 7-PG and PPG, with Mw = 4000 (about 70 monomers), confined in a Na-vermiculite clay have been…”
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Origin of the complex dielectric relaxation spectra of molecular glass formers
Published in Physical review. B, Condensed matter and materials physics (01-05-2004)Get full text
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Radial distribution function analysis of the structure of activated carbons
Published in Carbon (New York) (01-11-1998)“…The structure of a series of activated carbon materials prepared from a polymer of phenol formaldehyde resin with different degree of “burn-off” from 0 to 32%…”
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Neutron diffraction and calorimetric study on Al-based metallic glasses
Published in Journal of non-crystalline solids (01-07-2001)“…The kinetics of transformation of the melt spun Al 87Ni 7Nd 3Cu 3 alloy was analysed by differential scanning calorimetry (DSC) and neutron diffraction (ND)…”
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7
Rotation of Methyl Side Groups in Polymers: A Fourier Transform Approach to Quasielastic Neutron Scattering. 1. Homopolymers
Published in Macromolecules (01-04-1995)Get full text
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Dynamics of 2D-water as studied by quasi-elastic neutron scattering and neutron resonance spin-echo
Published in Physica. B, Condensed matter (01-07-2001)“…We have investigated the dynamics of confined water in an Na-vermiculite clay by combining quasi-elastic neutron scattering (QENS) and neutron resonance…”
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Novel Nanoparticles for Pulmonary Drug Administration
Published in Journal of drug targeting (2001)“…A novel one-step, low energy method, which avoids harsh processing conditions including potentially toxic and chemically reactive cross-linking agents, for the…”
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10
Diffusive motions in crystalline AlCuNi by neutron quasielastic scattering
Published in Physica. B, Condensed matter (01-07-2001)“…Quasi-elastic neutron scattering experiments have been performed on the Al 50Cu 35Ni 15 alloy on the IRIS spectrometer at ISIS and on the MIBEMOL spectrometer…”
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Experimental insight into the mixed mobile ion effect in glasses
Published in Solid state ionics (02-11-2000)“…The structures of ion conducting mixed-alkali metaphosphate glasses (A 2O) x –(B 2O) 1− x –P 2O 5 (A,B=Li,Na,Rb) have been examined by neutron diffraction and…”
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Diffusive dynamics in polymer gel electrolytes investigated by quasi-elastic neutron scattering
Published in Physica. B, Condensed matter (01-07-2001)“…Quasi-elastic neutron scattering has been performed on a polymer gel electrolyte consisting of lithium perchlorate dissolved in ethylene carbonate/propylene…”
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13
Structure of liquid PEO-LiTFSI electrolyte
Published in Physical review letters (12-06-2000)“…The structure of a polymer electrolyte, P(EO)7.5LiN(SO 2CF (3))(2), has been determined by neutron diffraction with isotropic substitution. The Li ions are…”
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Rotation of Methyl Side Groups in Polymers: A Fourier Transform Approach to Quasielastic Neutron Scattering. 2. Polymer Blends
Published in Macromolecules (01-06-1995)“…We present a quasielastic neutron scattering (QENS) study of two partially miscible blends: a blend of solution chlorinated polyethylene and poly(methyl…”
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15
Free volume and dissociation effects in fast ion conducting glasses
Published in Journal of non-crystalline solids (01-03-2000)“…We have investigated the structural changes that occur on CsI and CsI–AgI doping in AgPO 3 using neutron diffraction and Raman scattering experiments. To…”
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The Segmental and Rotational Dynamics of PPO, Above the Glass-Transition, Investigated by Neutron Scattering and Molecular Dynamics Simulations
Published in Soft materials (01-01-2005)“…The relaxation properties of poly(propylene oxide) at temperatures above the glass-transition temperature are studied by quasi-elastic neutron scattering and…”
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Neutron diffraction investigations of the cation coordination in an amorphous polymer electrolyte, PPO-LiClO4
Published in Electrochimica acta (01-01-2000)Get full text
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Intermediate range structural correlations in polymer electrolyte PPO-LiClO4 from neutron diffraction experiments and reverse monte Carlo simulations
Published in Electrochimica acta (30-04-1998)Get full text
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19
Dynamic enhancement of cation migration in a Zintl alloy by polyanion rotation
Published in Nature (London) (16-09-1993)“…A study found unusual disordering behavior in a Zintl alloy. Rapid reorientations of tin polyanions enhance jump migration of sodium cations…”
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Structure of fast ion conducting borate glasses by neutron diffraction and reverse Monte Carlo simulations
Published in Physica scripta (01-01-1995)Get full text
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