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. 2011 Jul 14;1(5):744–753. doi: 10.1098/rsfs.2011.0049

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Figure 7. — Fluorescence image of rhodamine B showing the restacking effect of the DAEKF system in a nanochannel in five different regions. Region (a): a two-dimensional AEOF. Region (b): the AEOF encounters a strong pulling force by the first external electric field. Regions (c,d): a strong pushing effect is generated by the incorporation of the AEOF and the second electric field. When this flow exits the region (d) and re-enters the AEOF in the next region (e), an effect similar to that in the former region (b) appears again while a strong downward rotational flow occurs.