Magnetically Controlled Reflection of a Ferrofluid Cell



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Figure 42 - Using a polarizing filter on the camera while viewing a ferrofluid cell.

Earlier I mentioned that the color of the yellow lines and the polarization of the yellow lines seen in the ferrofluid cell pictures where linked together. In Figure 42, I show three pictures that was taken in consecutive order with the only change of a linear polarizer being rotated on the camera. Notice the middle picture where the yellow lines, the eyebrow shapes, are well attenuated. Not one or two of them, but all nine yellow lines at once can be effected by the camera's polarization filter.


I believe this is ample proof that all the lines are produced using the same mechanism but with minor spectrum changes based on polarization.


Figure 43 - Ferrofluid cell with magnets in a circle.
Summary: I have extraordinary evidence that the ferrofluid cells do not obey the rules of classical optics. The main problem being the question of how do you characterize such a system? Can you call it a Kerr photonic crystal, or can you call it a metamirror? Just calling it magnetically controlled chiral dichroic reflection seems a bit unsatisfactory.
My work is different from the mainstream 'Magnetic Fluid Deformable Mirrors' or the 'Metal Liquid Like Films' because I am only using the optics of ferrofluid itself with large magnetic fields that are producing self-assembled magnetic agglomerate clusters.

The proof is in the pudding; if Figure #44 is not created with resonating magnetic agglomerate clusters, then how is it created? I see resonant displacement currents propagating inside the ferrofluid cell and it is the current(s) that are scattering the light.





Figure 44 – Ferrofluid cell readings with a 50mm ring magnet behind the cell.

References & Resources:

1) Yang, S.y., H.e. Horng, Y.t. Shiao, Chin-Yih Hong, and H.c. Yang. "Photonic-crystal Resonant Effect Using Self-assembly Ordered Structures in Magnetic Fluid Films under External Magnetic Fields." Journal of Magnetism and Magnetic Materials: 43-47.

2) Qian, Zhaoxia, Simon P. Hastings, Chen Li, Brian Edward, Christine K Mcginn, Nader Engheta, Zahra Fakhraai, and So-Jung Park. "Raspberry-like Metamolecules Exhibiting Strong Magnetic Resonances." ACS Nano (2015): 1263.

3)V. S. Asadchy, Y. Ra’di, J. Vehmas, and S. A. Tretyakov. " Functional Metamirrors Using Bianisotropic Elements" Phys. Rev. Lett. 114, 095503 – Published 6 March 2015

4) Snyder, M. and Frederick, J. (2009), 'Photonic Dipole Contours of Ferrofluid Hele-Shaw Cell', Reinvention: a Journal of Undergraduate Research, Volume 2, Issue 1 http://www2.warwick.ac.uk/go/reinventionjournal/issues/volume2issue1/snyder

5) 2008 APS March Meeting Abstract: H32.00012 : 'Ferrofluid Photonic Dipole Contours http://meetings.aps.org/Meeting/MAR08/Session/H32.12

6) APS Website and 2012 APS Calendar http://www.aps.org/about/physics-images/archive/heleshaw.cfm

7) NSF Visualization Challenge Finalist 2009 & 2013 https://nsf-scivis.skild.com/skild2/nsf2013/viewEntryDetail.action?pid=48989

8)Timm Vanderelli of Ligonier, Pennsylvania. USPTO patent application  #20070241745

Magnetic Flux Viewer. <http://nanomagnetics.us>



9) "Michael Monroe Snyder." Facebook. Web. 30 Mar. 2015.


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