Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collective Behavior Induced Highly Sensitive Magneto-Optic Effect in 2D
  Inorganic Liquid Crystals   Collective behavior widely exists in nature, ranging from the macroscopic
cloud of swallows to the microscopic cloud of colloidal particles. The behavior
of an individual inside the collective is distinctive from its behavior alone,
as it follows its neighbors. The introduction of such collective behavior in
two-dimensional (2D) materials may offer new possibilities to achieve desired
but unattained properties. Here, we report a highly sensitive magneto-optic
effect and transmissive magneto-coloration via introducing collective behavior
into magnetic 2D material dispersions. The increase of ionic strength in the
dispersion enhances the collective behavior of colloidal particles, giving rise
to a magneto-optic Cotton-Mouton coefficient up to 2700 T-2m-1 which is the
highest value obtained so far, being three orders of magnitude larger than
other known transparent media. We also reveal linearly dependence of
magneto-coloration on the concentration and hydration radius of ions. Such
linear dependence and the extremely large Cotton-Mouton coefficient
cooperatively allow fabrication of giant magneto-birefringent devices for
color-centered visual sensing.

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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph