GAMMA RADIATION-INDUCED TRANSFORMATIONAL CHANGE IN IR SPECTRUM OF EBHA NEMATIC LIQUID CRYSTAL
Gamma ray irradiation technique is the powerful technique to modify the dielectric and electro-optical properties of liquid crystals. It prefers than any other modification technique because no catalysts or additives are required to initiate the reaction. The present paper reports a comparative study of IR spectrum for both irradiated and unirradiated EBHA NLC. The dielectric spectrum and ionic conductivity is also evaluated and well explained in this paper. In addition to this, we have also suggested the concept of the peak data information graph for better understanding of IR spectrum.
A MMW radiometer is widely used in remote sensing and guidance. In order to obtain the real brightness temperature distribution of the target, we need to solve the first kind of ill Fredholm integral equation of radiometric antenna temperature. The paper presents a kind of inversion method for modifying antenna pattern and the approach of error compensation. Compared with the theoretical calculation model of 3mm smooth water surface, the results show this algorithm has a higher accuracy for the measurement application.