Dear All,
I have grown crystals of NLO material. I want to check the birefriengence property of my grown crystal. anybody please suggest me the place or institute where the birefriengence of crystal is available.
I believe all you need is a coherent light source. Aim the light ray on the crystal and the ray will split into two. Let me know if that works.
The easiest way might be to use a polarizing optic, e.g. a petrographic microscope as these are usually polarizing microscopes. If your university has geologic faculty than they should own such a microscope. Assuming the material is translucent just prepare a thin section (~ 25 microns thick), place it on the sample stage and cross the polars. By rotating the stage the birefringence should sho up (4 times dakr, 4 times bright by 360° rotation) if there is any. From the interference colour you can at leat judge the amount of birfringence.
If you need the absolute value it turns out a bit more complicated, as you need a more special equipment. But any university with a petrologic (mineralogic) or crystallographic chair should own the equipment (more or less).
Hope it helps
Dear Jaydeep,
we can easily measure the birefringence of your crystal (through the method of the thin sections). Send me please some samples of your crystals, if you are interested in, and we will solve your problem.
Dipartimento di Scienze della Terra, Università di Torino, via Valperga Caluso 35, Torino, 10125, Italy.
Hoping it helps
Dino
Dear all,
Can anyone suggest me i have attempted to grow succinic acid crystals in aqueous solution but i have got crystal flakes. could anyone tell me how it can be grown into crystals, either by changing the solvent or by using mixed solvent
Dear Dhivya,
first of all, a solubility curve of succinic acid in water is needed, i.e. succinic acid concentration in water vs temperature. Then you should send me this curve and we will discuss about the best way to obtain good crystals.
All the best !
Dino Aquilano [email protected]
Dear Dino Aquilano,
Thank you for your consideration ,
Sure i will send you the solubility of succinic acid in water vs temperature.
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