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V.D. Ambeth Kumar,S. Malathi,V.D. Ashok Kumar,P.Kannan 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.4
Rapid increase in population growth has made the mankind to delve in appropriate identification of individuals through biometrics. Foot Print Recognition System is a new challenging area involved in the Personal recognition that is easy to capture and distinctive. Foot Print has its own dimensions, different in many ways and can be distinguished from one another. The main objective is to provide a novel efficient automated system Segmentation using Foot Print based on structural relations among the features in order to overcome the existing manual method. This system comprises of various statistical computations of various foot print parameters for identifying the factors like Instep-Foot Index, Ball-Foot Index, Heel- Index, Toe- Index etc. The input is naked footprint and the output result to an efficient segmentation system thereby leading to time complexity.
V.S. Vidhya,V. Malathy,T. Balasubramanian,V. Saaminathan,C.Sanjeeviraja,M. Jayachandran 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Nanocrystalline ITO thin films were deposited by the RF sputtering technique using various RF power values keeping the substrates at room temperature. An indepth study of the influence of RF power on the preferential orientation, optical, electrical and surface morphological propertieswas conducted by varying the RF power from 50 W to a maximum of 350 W. X-ray diffraction results confirmed the formation of nanocrystalline ITO films at all RF power values. At 250 W, the ITO films showed preferential orientation along (400) plane. Below and above this power, the films showed (222) orientation. It was observed from the optical transmittance studies that the bandgap value increased from 3.55 to 3.70 eV when the RF power was varied from 50 to 250W. The resistivity value showed a minimumof 4.2 ×10^-3 Ωcm and the grain size reached a maximum of 125 nm for the ITO film deposited at 250 W. The XPS, EDAX and AFM results revealed the formation of stoichiometric and smooth ITO films, which contained nano-sized grains distributed uniformly all over the surface. These results show that the nanocrystalline ITO films deposited with 250 W RF power under the optimized conditions at room temperature, have the required optoelectronic and surface morphological properties useful for the fabrication of devices at a relatively lower temperature.
Kumar, V.D. Ambeth,Malathi, S.,Kumar, V.D. Ashok,Kannan, P. The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.4
Rapid increase in population growth has made the mankind to delve in appropriate identification of individuals through biometrics. Foot Print Recognition System is a new challenging area involved in the Personal recognition that is easy to capture and distinctive. Foot Print has its own dimensions, different in many ways and can be distinguished from one another. The main objective is to provide a novel efficient automated system Segmentation using Foot Print based on structural relations among the features in order to overcome the existing manual method. This system comprises of various statistical computations of various foot print parameters for identifying the factors like Instep-Foot Index, Ball-Foot Index, Heel- Index, Toe- Index etc. The input is naked footprint and the output result to an efficient segmentation system thereby leading to time complexity.
Purification of Multi Walled Carbon Nanotubes (Mwcnts) Synthesized by Arc Discharge Set Up
Y. Malathi,Balaji Padya,K.V.P. Prabhakar,P.K. Jain 한국탄소학회 2010 Carbon Letters Vol.11 No.3
Carbon nanotubes are unique tubular structures of nanometer diameter and large length/diameter ratio. The nanotubes may consist of one up to tens and hundreds of concentric shells of carbons with adjacent shells separation of ~0.34 nm. Multiwalled carbon nanotubes were synthesized by arc-discharge technique. MWCNTs were formed at the cathode deposit along with other carbonaceous materials like amorphous carbon, graphite etc. However, to get the best advantage of carbon nanotubes in various advanced applications, these undesired carbonaceous materials to be removed which is a challenging task. In the present study, various techniques were tried out for purifying MWCNTs such as physical filtration, chemical treatment and thermal annealing. SEM, FTIR, TGA and BET techniques were used to characterize the CNTs at various stages. Results shows that suitable chemical treatment followed by thermal annealing under controlled flow of oxygen gives the better route for purification of carbon nanotubes.