In the form of powder or fibers? In which price category? When it comes to fiber and being as cheap as possible, there is only one answer that you already know: Glass (usually E-Glass with a refractive index of 1.5).
There is a slightly more expensive glass that has an increased refractive index of 1.9: lead crystal (flint glass).
The transparent mineral with a refractive index greater than 2 does not exist in the form of fibers, but only as a powder. These are the following monocrystalline minerals:
- Zirconia stabilized with yttrium (fianit) with a refractive index of 2.2, transparent.
- Diamond with a refractive index of 2.42, transparent.
- Silicon carbide (moissanite) with a refractive index of 2.67, transparent.
- Titanium dioxide (rutile) with a refractive index of 3.10, semitransparent.
Hi, Thank you very much for your explanation
I need the filler in the form of powder (particles) and introduce it to the polymer to increase the refractive index. I need materials as transition metals and no glass, zirconia, and very expensive materials.
Hello, I've read in papers about polymer composites and the authors use montmorillonite clay (MMT) to synthezise them, but i don't know if the MMT has the features that you mentioned.
I'm interested in this topic for future works.
I am unsure as to whether an entire university can ask such a question or if this is coming from a single member of RG. Some clarification would be appreciated.
An often used high RI material is TiO2 in both the anatase and rutile forms.
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