Review Article
Open Access
Synthesis, Characterization and HF Technique to Reduce Multiplicative Noise in Nano-dispersed LC Compounds
R. K. N. R. Manepalli1*, P. Pardhasaradhi2, K. Pandian3, M. C. Rao4*, B.T.P. Madhav2 and V. G. K .M. Pisipati2*
1Department of Physics, The Hindu College, Machilipatnam, AP, India
2LCRC-R&D, Department of ECE, K L University, Guntur Dt., AP, India
3Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, Tamilnadu, India 4Department of Physics, Andhra Loyola College, Vijayawada-520008, A.P., India
M. C. Rao et al /Int.J. TechnoChem Res. 2016,2(2),pp 152-157.
Abstract
Synthesis and characterization are carried on 70µl citrate capped gold nanoparticles dispersed
in N-(p-n-nonyloxy benzoic acid Liquid Crystalline compounds (LC). Further homomorphic filtering
(HF) technique is used to reduce the multiplicative noise in the image. This technique provides frequency
domain procedure to improve the appearance of an image by gray level range compression and contrast
enhancement. Polarizing microscope connected with hot stage and camera is used to capture the textures
of the compounds. The compound with dispersion of 70 µl exhibits same NC phases as compared with
the pure 9OBA with reduced clearing temperature as expected and nematic thermal ranges are increased
while performing DSC and POM.
Keywords
Synthesis, Homomorphic Filtering, Polarizing Microscope (POM), Differential Scanning Calorimeter (DSC), Nano dispersion, Illumination, Multiplicative Noise, Reflectance.
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