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UID:0-339@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20190403T163000

DTEND;TZID=Asia/Jerusalem:20190403T173000

DTSTAMP:20230527T134827Z

URL:https://aerospace.technion.ac.il/events/dipolophoresis-of-ideally-pola
 rizable-cylindrical-particle-pairs/

SUMMARY:Dipolophoresis of Ideally-Polarizable Cylindrical Particle Pairs
DESCRIPTION:Lecturer:Shay Oren\n Faculty:Department of Aerospace Engineerin
 g\n Institute:Technion – Israel Institute of Technology\n Location:Class
 room 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract: \n
  Details: \n We study dipolophoretic (DIP)\, i.e. the combined induced –
  charge electrophoretic (ICEP) and dielectrophoretic (DEP) interactions be
 tween a pair of identical conducting circular cylindrical particles suspen
 ded in an unbounded electrolyte solution and subject to a weak uniform tim
 e dependent external field acting in a plane perpendicular to the axes of 
 the cylinders. Within the framework of   the thin – Debye – layer li
 mit\, we specifically focus on the cases of an AC field acting in a fixed 
 direction in the plane and a constant – magnitude field rotating with fr
 equency\, respectively.\nBoth the ICEP and DEP result in particle mutual a
 ttraction when their line – of – centres (LOC) is aligned with the ext
 ernal field and repulsion when it is perpendicular thereto. The nonlineari
 ty inherent in both mechanisms gives rise to opposing effects acting to or
 ient the LOC parallel to the external field (DEP) or perpendicular thereto
  (ICEP). Thus\, at low frequencies\, when the latter prevails\, particles 
 ultimately move apart in the direction perpendicular to the external field
 . With increasing frequency\, DEP prevails over ICEP in a widening domain 
 of the plane resulting in particles eventually pairing (or chaining in mul
 ti-particle suspensions) along field lines.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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DTSTART:20190329T030000

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