  In this paper the state-of-the-art for exploiting the unique physical and
chemical properties of crystalline materials and their possible applications
for development of crystalline nanocomposites with the tailored anisotropy were
discussed. Using a method of growing crystals from a solution the KDP and TGS
nanocrystalites were grown in the mezopores of the Al2O3 matrix. To investigate
the developed nanocrystalline samples the X-ray analysis was used. A form of
the obtained diffractograms and our calculations show the predominant
crystallization of the KDP and TGS in the direction [100], which coincides with
the direction of the cylindrical pores. Thus, diffractograms contain only
reflexes of crystallographic planes (200) and (400). The achieved result
indicates the possibility of growing of nanocrystals in mesopores of such Al2O3
structures developed by us and provides the prospect of creating optical cells
with increased energy efficiency.
