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Topic: TiO2 Why is it transparent?  (Read 3605 times)

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Offline teoporta

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TiO2 Why is it transparent?
« on: February 28, 2012, 08:53:57 PM »
Dear all,
I'm working with Ti nanoparticles in trasparent resin, to increase the refractive index.
Why does TiO2 nanoparticles are transparent and do not help raising the refractive index?
What's the big difference between that and metallic Ti?
Thank you!
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Offline ATMyller

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Re: TiO2 Why is it transparent?
« Reply #1 on: February 29, 2012, 02:02:24 AM »
TiO2 is not transparent, it has very strong absorbtion at UV-range. Maybe the nanoparticles are too small and dispersed to make an noticeable effect e.g. smaller than measuring wavelength of used refractometer and not concentrated enough to cause measurable photon diffusion.
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Chemists do it periodically on table.
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