D. van der Beek
Utrecht University
8 Papers
65 Citations
D. van der Beek is an academic researcher from Utrecht University. The author has contributed to research in topics: Phase (matter) & Liquid crystal. The author has an hindex of 8, co-authored 8 publications.
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Papers
Magnetic-field-induced orientational order in the isotropic phase of hard colloidal platelets.
D. van der Beek,Andrei V. Petukhov,Patrick Davidson,Jacques Ferré,J. P. Jamet,Henricus H. Wensink,Gert Jan Vroege,Wim Bras,Henk N. W. Lekkerkerker +8 more
TL;DR: The magnetic-field-induced orientational order in the isotropic phase of colloidal gibbsite [Al(OH)3] platelets is studied by means of optical birefringence and small-angle x-ray scattering techniques, which leads to an underestimate of the diamagnetic susceptibility anisotropy Delta(chi).
Influence of a magnetic field on the nematic phase of hard colloidal platelets
D. van der Beek,Patrick Davidson,Henricus H. Wensink,Gert Jan Vroege,Henk N. W. Lekkerkerker +4 more
TL;DR: By applying a rotating magnetic field on the nematic phase, the bend-splay Frederiks transition is observed, visible as a spatially periodic transient pattern with a wavelength that depends on sample thickness and field strength.
Columnar liquid crystals of gibbsite platelets as templates for the generation of ordered silica structures
Maurice C. D. Mourad,Esther Groeneveld,P.J. de Lange,Ch. Vonk,D. van der Beek,Henk N. W. Lekkerkerker +5 more
TL;DR: In this paper, columnar liquid crystals of silica coated colloidal platelets are used as templates for the generation of ordered silica structures by base catalysed hydrolysis of tetraethoxysilane (TEOS).
Gelation versus liquid crystal phase transitions in suspensions of plate-like particles
Maurice C. D. Mourad,Judith E. G. J. Wijnhoven,D. D. Van 'T Zand,D. van der Beek,Henk N. W. Lekkerkerker +4 more
TL;DR: In this article, the phase behavior of a charged colloidal clay platelet system approaching the state of gelation in the delicate region between attractive and repulsive states that originate from competition between Coulomb repulsion and van der Waals attraction was investigated.
Isotropic-nematic interface and wetting in suspensions of colloidal platelets
D. van der Beek,Hendrik Reich,P.P.A.M. van der Schoot,Marjolein Dijkstra,Tanja Schilling,Richard L. C. Vink,Matthias Schmidt,Matthias Schmidt,R. van Roij,Henk N. W. Lekkerkerker +9 more
TL;DR: The balance between Frank elasticity and surface anchoring near the contact line is analyzed and the isotropic-nematic surface tension is determined to be 3 nN/m, in quantitative agreement with theoretical and simulation results.