One of the goals of research in the Halasyamani group is to develop structure-property relationships. To this end, we have extensive characterization capabilities (Chem. Soc. Rev. 35, 710-717, 2006).

• Powder second-harmonic generation (SHG) measurements at 1064nm and 532nm.

• Piezoelectric measurements - converse and direct

• Pyroelectric and Ferroelectric measurements

• Refractive index measurements

• Laser Damage Threshold (LDT’s)

• Maker Fringe

The Maker Fringe measurements allow us to determine individual SHG coefficients, d_ij’s.

We also have the capability to index, cut, and polish crystals.

Our physical property characterization capabilities in combination with our synthesis and crystal growth expertise make the Halasyamani lab rare, if not unique, with respect to functional inorganic materials.

Schematics of our measurement capabilities are given below.

     

Second-harmonic Generation                  Piezoelectric Measurements

Pyroelectric Measurements

Ferroelectric Measurements

We are happy to collaborate and perform any of these measurements on samples sent to us. Please contact Prof. Halasyamani (psh@uh.edu) if interested.