Binding with oppositely charged
particles

•Heteroaggregate
structure directed by AC-electric field

•Chain
length distribution tuned by particle size/number ratio

•Developed
a unique combinatorial approach for predicting chain length

Binding with surfactant

•Fabricated
ultra-flexible magnetic nanoparticle chains by surfactant mediation

•Controlled
the melting of magnetic chains by temp.

•Assembled
hierarchal structures by manipulating the directionality of magnetic field