Dipolar Ordering of Clay Particles in Various Carrior Fluids [Mirror] Z. Rozynek, H. Mauroy, R. C. Castberg, K. D. Knudsen and J. O. Fossum We investigate here examples of complexity in composite materials. The objective of the paper is to show that clay particles can be aligned in different hosting media, such as: silicone oil,…
Clay Alignment in Electric Fields [Local Mirror] R. C. Castberg, Z. Rozynek, J. O. Fossum, K. J. Måløy, P. Dommersnes and E. G. Flekkøy The response of rotational alignment of lithium fluorohectorite (Li-Fh) to an external electric field has been studied by employing image analysis. Large aggregates consisting of many single clay particles were prepared using…
Identifying and Analyzing Safety Critial Maneuvers.. [Link to article] ABSTRACT: We demonstrate the value in previously disregarded parameters in AIS data, and present a novel way of quickly identifying and characterizing potentially safety critical situations for vessels with a properly configured AIS transponder. The traditional approach of studying (near) collision situations, is through vessel conflict…
Published in Frontiers in Physics [Local cached copy] Abstract: We experimentally investigate the rotation of plate shaped aggregates of clay mineral particles immersed in silicone oil. The rotation is induced by an external electric field. The rotation time is measured as a function of the following parameters: electric field strength, the plate geometry (length and width)…
Electric field nematic alignment of fluorohectorite clay particles in oligomeric matrices Zbigniew Rozynek, René C. Castberg, Alexander Mikkelsen and Jon Otto Fossum Abstract We study the behavior of fluorohectorite synthetic clay particles dispersed in paraffin wax. We report wide-angle x-ray scattering related to electric-field-induced alignment of the embedded clay particles. The development of anisotropic arrangement of…
Active Structuring Of Colloidal Armour On Liquid Drops [Link to article] Adsorption and assembly of colloidal particles at the surface of liquid droplets are at the base of particle-stabilized emulsions and templating. Here we report that electrohydrodynamic and electro-rheological effects in leaky-dielectric liquid drops can be used to structure and dynamically control colloidal particle assemblies…