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Old Dec 7th 2015, 06:09 AM   #1
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Biological-compasses: help a bioligist understand ferrimagnetic nanorings!

Hi,

I have been reading this fascinating paper here:

http://www.nature.com/nmat/journal/v.../nmat4484.html

I'm struggling with some of the biophysics, and it would be great to get a discussion going. In particular, I was struggling with the statements where it says "The two kinks appearing around zero magnetization indicate the existence of two vortex states with opposite directions, similar to the behaviours observed in ferrimagnetic nanorings54, and in agreement with the here proposed ‘iron-loop’ hypothesis on the basis of structural modelling"

And also "We propose two possible causes of the intrinsic magnetic feature of this magnetosensor: the linear array of iron atoms and/or a synchronized circular current in the iron loops. To our knowledge, such ferrimagnetic behaviour and vortex states with opposite directions of the clCry4/clMagR protein complex in solution have not been shown previously, and are consistent with our observations"

Can someone translate this into biologist-friendly terms, and expound on the ramifications of this? Thanks.
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