A multiplexed separation of iron oxide nanocrystals using variable magnetic fields

J. T. Mayo, S. S. Lee, C. T. Yavuz, W. W. Yu, A. Prakash, J. C. Falkner, V. L. Colvin*
Nanoscale, 3, 4560-4563 (2011). [DOI] [pdf]


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.



 
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