Field-induced adsorption exclusion of particles from one-dimensional nanomagnets.
I study the adsorption of paramagnetic colloids to one-dimensional nanomagnets. It is found that in the absence of external magnetic fields the colloids tend to adsorb to the nanomagnet by arranging themselves in a nearly close-packed formation, whereas in an external field some of the colloids are repelled due to dipolar interactions. I develop a theory for this phenomenon and show that it is in agreement with experimental data.
Helseth
L E
LE
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore. lars@ntu.edu.sg
D000327:Adsorption; D003102:Colloids / Q000737:chemistry*; D004574:Electromagnetic Fields; D008956:Models, Chemical; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size
D003102:Colloids