Zhao, J., Papadopoulos, P., Roth, M., Dobbrow, C., Roeben, E., Schmidt, A., Butt, H. -J., Auernhammer, G. K. and Vollmer, D. (2013). Colloids in external electric and magnetic fields: Colloidal crystals, pinning, chain formation, and electrokinetics. Eur. Phys. J.-Spec. Top., 222 (11). S. 2881 - 2894. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1951-6401

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Abstract

The motion of dilute and concentrated dispersions of colloids by external electric or magnetic fields is discussed. Electrokinetics is studied for colloids in confinement, where the confining walls can be flat or rough. As an example for a rough wall superhydrophobic surfaces are chosen. It is shown that the reduced friction at the water-air interface is insufficient to enhance electro-osmosis. Magnetic particles are pulled through a crystalline matrix formed by nonmagnetic colloids to investigate local melting and recrystallization of a crystalline matrix. The average strain field is calculated and the reorganization processes are compared to those induced by shear fields. Using single domain, magnetically blocked particles of different shape and surface characteristics, the interplay between particles, their environment and an external field is investigated.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Zhao, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Papadopoulos, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roth, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dobbrow, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roeben, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmidt, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Butt, H. -J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Auernhammer, G. K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vollmer, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-473429
DOI: 10.1140/epjst/e2013-02064-1
Journal or Publication Title: Eur. Phys. J.-Spec. Top.
Volume: 222
Number: 11
Page Range: S. 2881 - 2894
Date: 2013
Publisher: SPRINGER HEIDELBERG
Place of Publication: HEIDELBERG
ISSN: 1951-6401
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ELECTROPHORETIC MOBILITY; FLUORESCENCE RECOVERY; NANOPARTICLES; ELECTROHYDRODYNAMICS; NANOINDENTATION; ELECTROOSMOSIS; PARTICLE; SPHERES; ORDERMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/47342

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