Abstrakt
We hereby report a methodology that permits a quantitative investigation of the temporal self-organization of superparamagnetic nanoparticles in the presence of an external magnetic field. The kinetics of field-induced self-organization into linear chains, time-dependent chain-size distribution, resolved growth steps (condensation, polarization, co-linearity and concatenation), the average chain growth rate, and inter-particle interaction length were calculated in the presence of a 120 G external magnetic field using optical microscopy and ‘in-house' developed image analysis software. The measurements are in good agreement with theoretical assumptions.
Originalsprog | Engelsk |
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Tidsskrift | Applied Physics Letters |
Vol/bind | 97 |
Udgave nummer | 10 |
Antal sider | 3 |
ISSN | 0003-6951 |
DOI | |
Status | Udgivet - 2010 |