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Spin-echo small-angle neutron scattering (SESANS) measurements of needle-like crystallites of gelator compounds

Coumou, P.C.J.J. (author), Brizard, A.M.A. (author), Van Esch, J.H. (author), De Schepper, I.M. (author), Bouwman, W.G. (author)

From dibenzoyl cystine, a low molecular weight gelator, we have prepared needle shaped crystals at relatively high concentrations. For the first time SESANS measurements are performed on objects with this geometry. From the measurements the average diameter can be seen directly. From a more careful analysis the width distribution is determined....

journal article 2010

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Structure in cohesive powders studied with spin-echo small angle neutron scattering

Andersson, R. (author), Bouwman, W.G. (author), Luding, S. (author), De Schepper, I.M. (author)

Extracting structure and ordering information from the bulk of granular materials is a challenging task. Here we present Spin-Echo Small Angle Neutron Scattering Measurements in combination with computer simulations on a fine powder of silica, before and after uniaxial compression. The cohesive powder packing is modeled by using molecular...

journal article 2008

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Stress, strain, and bulk microstructure in a cohesive powder

Andersson, R. (author), Bouwman, W.G. (author), Luding, S. (author), De Schepper, I.M. (author)

Spin-echo small-angle neutron scattering is able to characterize powders in terms of their density density correlation function. Here we present a microstructural study on a fine cohesive powder undergoing uniaxial compression. As a function of compression, we measure the autocorrelation function of the density distribution. From these...

journal article 2008

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Localization of ferrocene in NaY zeolite by powder x-ray and neutron diffraction

Kemner, E. (author), Overweg, A.R. (author), Van Eijck, L. (author), Fitch, A.N. (author), Suard, E. (author), De Schepper, I.M. (author), Kearley, G.J. (author)

We study the inclusion of the metallocene ferrocene Fe(C5H5)2 molecules in the supercages of NaY zeolite. To find the exact location of the ferrocene molecules within the supercages we perform neutron and powder x-ray diffraction on bare NaY zeolite, and on NaY zeolite loaded with one or two ferrocene molecules per supercage. Using the...

journal article 2002

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Exact calculation of the linear term in the density expansion of the dynamic structure factor of a dilute gas

Miyazaki, K. (author), de Schepper, I.M. (author)

journal article 2001

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Dynamic structure factor of a dilute Lennard-Jones gas

Miyazaki, K. (author), de Schepper, I.M. (author)

journal article 2001

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Lithium dynamics in LiMn2O4 probed directly by two-dimensional 7Li NMR

Verhoeven, V.W.J. (author), de Schepper, I.M. (author), Nachtegaal, G. (author), Kentgens, A.P.M. (author), Kelder, E.M. (author), Schoonman, J. (author), Mulder, F.M. (author)

journal article 2001

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Neutron scattering investigation of the spin dynamics in Li[Mn1.94Li0.04]O3.94

Schimmel, H.G. (author), Montfrooij, W. (author), Kearley, G.J. (author), Verhoeven, V.W.J. (author), de Schepper, I.M. (author)

journal article 2001

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The vibrational spectrum of solid ferrocene by inelastic neutron scattering

Kemner, E. (author), De Schepper, I.M. (author), Kearley, G.J. (author), Jayasooriya, U.A. (author)

We calculate the spectrum of internal vibrations of a single ferrocene Fe(C5H5)2 molecule using ab initio density functional theory (without free parameters) and compare this with inelastic neutron scattering data on ferrocene in the solid state at 28 K. Due to the good agreement, we can assign each vibrational mode to each observed peak in the...

journal article 2000

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Diffusion of concentrated neutral hard-sphere colloidal suspensions

Verberg, R. (author), de Schepper, I.M. (author), Cohen, E.G.D. (author)

journal article 2000

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Svensson, Montfrooij, and de Schepper reply:

Svensson, E.C. (author), Montfrooij, W. (author), de Schepper, I.M. (author)

journal article 1998

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Viscosity of colloidal suspensions

Verberg, R. (author), de Schepper, I.M. (author), Cohen, E.G.D. (author)

journal article 1997

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Crevecoeur, de Schepper, and Montfrooij reply

Crevecoeur, R.M. (author), de Schepper, I.M. (author), Montfrooij, W. (author)

journal article 1996

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Disappearance of roton propagation in superfluid 4He at Tλ

Svensson, E.C. (author), Montfrooij, W. (author), de Schepper, I.M. (author)

journal article 1996

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Comment on "viscosity and structural relaxation in suspensions of hard-sphere colloids"

de Schepper, I.M. (author), Cohen, E.G.D. (author), Verberg, R. (author)

journal article 1996

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Dynamics of neopentane in dense argon gases

Smorenburg, H.E. (author), Crevecoeur, R.M. (author), de Graaf, L.A. (author), de Schepper, I.M. (author)

journal article 1996

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Comment on "scaling of transient hydrodynamic interactions in concentrated suspensions"

Cohen, E.G.D. (author), de Schepper, I.M. (author)

journal article 1995

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Overdamped phonons in fluid helium at 4 K

Crevecoeur, R.M. (author), Verberg, R. (author), de Schepper, I.M. (author), de Graaf, L.A. (author), Montfrooij, W. (author)

journal article 1995

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Structure and dynamics of C60 molecules in liquid CS2 from neutron scattering

Smorenburg, H.E. (author), Crevecoeur, R.M. (author), de Schepper, I.M. (author), de Graaf, L.A. (author)

journal article 1995

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Half widths of neutron spectra in dense helium-neon gas mixtures

Westerhuijs, P. (author), de Graaf, L.A. (author), de Schepper, I.M. (author)

journal article 1993