Sunday 25 May 2014

Amazing physics of magnetized chains of beads

Magnetic ghosts and monopoles. N Vandewalle and S Dorbolo 2014

New J. Phys. 16, 013050 (2014)





The magneto-elastica: from self-buckling to self-assembly.
Dominic Vella, Emmanuel du Pontavice,  Cameron L. Hall and Alain Goriely

Proc. Royal Soc. A 470 20130609 (2013)



Three simple experiments that illustrate the resistance to deformation of assemblies of ferromagnetic spheres. (a) The self-buckling of a vertical chain of magnetic spheres as further spheres are added. (b) The prolate–oblate oscillation of a ring of magnetic spheres. Snap-shots of the motion are shown at intervals of 0.021 s. (c) A self-assembled chiral ‘nano-tube’. In each case, the diameter of the spheres is 2a=5 mm and the magnetic field strength is B= 1.195 T.



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