Co nanopeapods

Fabrication of Nanopeapods: Scrolling of Niobate Nanosheets for Magnetic Nanoparticle Chain Encapsulation.
Yuan Yao, Girija S. Chaubey, and John B. Wiley
JACS 134, 2450 (2012)

Proposed mechanism for the formation of a nanopeapod. (a) Co NPs nucleate and grow in solution. (b) NPs assemble and form a chain on the surface of a niobateNS. (c, d) The niobate NS scrolls around the chain. (e) Nanopeapods form and separate from the niobate NSs.