Magnetic NPs: Two Reviews

Magnetic nanoparticles: recent advances in synthesis, self-assembly and applications.
Srikanth Singamaneni, Valery N. Bliznyuk, Christian Binek and Evgeny Y. Tsymbal
J. Mater. Chem. 21, 16819 (2011)

Nanoscale Forces and Their Uses in Self-Assembly.
Kyle J. M. Bishop, Christopher E. Wilmer, Siowling Soh, and Bartosz A. Grzybowski
Small 5, 1600 (2009)