A multiplexed separation of iron oxide nanocrystals using variable magnetic fields

by J. T. Mayo, S. S. Lee, C. T. Yavuz, W. W. Yu, A. Prakash, J. C. Falkner, V. L. Colvin
Year: 2011 DOI: https://pubs.rsc.org/en/content/articlelanding/2011/NR/c1nr10671f#!divAbstract


The size-dependent magnetic properties of nanocrystals are exploited in a separation process that distinguishes particles based on their diameter. By varying the magnetic field strength, four populations of magnetic materials were isolated from a mixture. This separation is most effective for nanocrystals with diameters between 4 and 16 nm.