Control of sub-micron sized particles is of increasing interest as there is clear evidence that small atomic clusters (n = 10-1000 atoms) exhibit novel hybrid properties between the molecular and bulk solid-state limits. Through SANS and SQUID magnetometry we have recently shown that quantum effects can be observed in nanoparticle-free ferrofluids through the design of magnetic micelles and microemulsions with magneto-surfactants1. This proposal is founded on the new publication Microemulsions as tunable nanomagnets, Soft Matter, 2012, DOI:10.1039/C2SM26827B accepted 27-09-2012.