Day 1 :
Keynote Forum
Y. Chergui
University M’Hamad BOUGARA, Algeria
Keynote: Zinc Oxide Properties Under Different Conditions of Pressure and Temperatures a Molecular Dynamics Simulation
Biography:
Yahia CHERGUI is a lecturer in Electrical & Electronics Engineering Institute, Boumerdes Algeria. He has completed his PhD from Badji Mokhtar University in Annaba, Algeria. He did all his PhD work in Cardiff University in UK. His research field is Physics(condensed matter, simulation by molecular dynamics). He is a lecturer in Boumerdes University( Electrical & Electronics Engineering Institute) since 2012. He has many published articles and international conferences. He has been serving as a referee with condensed matter journal (IOP), Energy journal (Elsevier), and recently accepted to be a reviewer of American Journal of Modern Physics. He is an academic member of the Athens Institute for Education and Research belonging to Physics Unit.
Abstract:
Zinc oxide semiconductor is a promised material due to its properties between ionic and covalent band. In this work we investigate molecular dynamics and dl_poly_4 software to analyze the band behavior under the effect of pressures and temperatures. Our system composed of 2916 atoms in a simulation box of 9x9x9 dimension. The range of pressure is 0-200GPa and for temperature is 300-3000K, we will study the variation of the distance between ZnO atoms. Our results are in agreement with the available data due to no more information under previous conditions. This result is very important in nanosacle and macroscale especially in industry field and geophysics.
Keynote Forum
Trivedi Achyut
Ganpat University, India
Keynote: Structural and optical characteristic of {3-(4-(dimethylamino) phenyl)-2-phenyl-(2E) propen1-one} doped ZnO nanoparticles
Time : 10:00- 10:30
Biography:
Mohana F. Attia is a Sudanese academic researcher. Attia obtained a B.Sc. in applied physics and mathematics at Omdurman Ahlia University and a M.Sc. in applied physics at Dongola University. Now about to complete his PhD from Al– Neelain University, Sudan. He has many articles and two books and has been lectured at many Universities and Research Centers in (Sudan, KSA). Since 2017, he is lecturer of Alasala Colleges, KSA.
Abstract:
The purpose of this paper is to investigate the structural and optical characteristics of a doped in ZnO nanoparticles. Part of the aim is to study the characterization of chalcone doped ZnO nanoparticles by several techniques such as X-ray diffraction, Scanning electron microscope, FTIR spectroscopy and diffuse reflection spectra. All doped samples showed hexagonal wurtzite structure. This study has shown that, the crystallite size of pure ZnO varied from 23.50 to 27.45 nm and when, increasing the chalcone percentage by 1 and 1.5% has increased the crystallite sizes in the range of 33.40–33.80 nm and 33.80–36.20 nm, respectively. The value of the energy gap (Eg) for ZnO nanoparticles was 3.14 eV. For 1 and 1.5% chalcone doped ZnO, the energy gap decreased by an order of magnitude 0.18 eV. The vibration band of ZnO at 435 cm −1 was shifted to the higher wave number of 442 and 447 cm −1 for the dopant 1 and 1.5%, respectively.
Keynote Forum
Bhim P Kafle
Kathmandu University,Nepal
Keynote: Calcination Condition Dependence of Electrical Properties of Fluorine doped Tin Oxide (FTO) Transparent Thin Films
Time : 10:30- 11:00
Biography:
Dr. Bhim Kafle, (Ph.D. in physics), now is an Assistant professor of physical chemistry at Kathmandu University (KU), head of the Material Science Research Laboratory(MSRL,KU) and a life Member of the Chemical Society of Nepal. He got his B Sc (with physics, chemistry and math as majors), M Sc in Physical Chemistry (Tribhuvan University, Nepal) and also in Solar Energy and Environmental Science (Ben-Gurion University, Israel), Specialist in photochemistry, Doctor's degree (Ph.D.) at Graduate University for Advanced Studies (GUAS, Japan), got “The World Academy of Science (TWAS)” Award in 2012, and a best poster presentation Award from “Electrostatic Storage Devices Workshop (ESD-2011)”, US, 2011. Currently Dr. Kafle’s researches focus on the Spectroscopy of sensitizers for dye sensitized and perovskite solar cells and thin film preparation techniques.
Abstract:
In this study, dependence of optical and electrical properties of FTO thin transparent film on calcination conditions (thermal treatment in an oven in aerobic and anaerobic conditions, specifically, in the presence of either air or N2 gas) were studied. The FTO films were fabricated with low cost home-made spray pyrolysis setup and calcinated at 500 oC for two different environments for thirty minutes. The homogeneous solution of stannous chloride (Sncl2.2H2O) and ammonium fluoride (NH4F) in distilled water was used as a precursor solution. The films’ structural, surface, optical and electrical properties were measured with XRD, SEM, UV-Vis spectroscopy, and 2-Probe measurements, respectively. The FTO films fabricated by spraying the precursor solution for 30 minutes with F to Sn to ratio of 0.85:1.81 and calcined in the presence of air followed by low temperature plasma treatment yielded the lowest electrical resistance of 17 Ωcm-1 and maximum transmittance of ca. 80 %. Also, the effect of calcination environment and plasma treatment on film’s reflectance will also be discussed.
Keynote Forum
S. Emami
Keynote: Microstructural refining during friction stir welding of SAF 2205 duplex stainless steel
Biography:
S. Emami young graduates always find better solutions for the same” is the philosophy of Prof. Achyut Trivedi. He is an academic professional and researcher in the field of most promising technology that is "3D printing". Currently Prof. Achyut Trivedi working in Ganpat University as Head of GUNI Additive Manufacturing (3D Printing) technology Centre of Excellence. He aims at imparting education that enhances and enriches the intellect, noble, imaginative and creative self that lies deep within an individual. He follows different teaching pedagogies, more specifically Blended Learning
Abstract:
Friction stir welding (FSW) was conducted on a SAF 2205 duplex stainless steel at welding speed of 50 mm/min and rotational speed of 400 rpm. Characterization of evolved material was studied using electron microscopy equipped with electron back scattered diffraction (EBSD) system. The results indicated that the severe plastic deformation and the heat generated during the FSW process developed a very fine microstructure in the stir zone (SZ) of the weldment. It was found that the finest grains with average grain size of 1 µm were formed in the bottom of the SZ where the material was more likely to receive the lowest temperature in both constituent phases of ferrite and austenite. The presence of such severe deformation along with the elevated temperature during the welding procedure inside the SZ activates the occurrence of continuous dynamic recrystallization mechanism throughout the material which seems to be responsible for grain refinement. Moreover, Texture analysis showed that the rotating tool broke the initial microstructure, modified the pre-existence rolling texture of the starting material, and introduced simple shear texture components into the SZ. This kind of modification mainly took place by activation of the {111}<110> and {110}<111> easy slip systems of austenite and ferrite, respectively.
Keynote Forum
Jeyan A. Moses
National Institute of Food Technology,India
Keynote: 3D food printing for personalized nutrition
Biography:
3D printing has huge research challenges and young graduates always find better solutions for the same” is the philosophy of Prof. Achyut Trivedi. He is an academic professional and researcher in the field of most promising technology that is "3D printing". Currently Prof. Achyut Trivedi working in Ganpat University as Head of GUNI Additive Manufacturing (3D Printing) technology Centre of Excellence. He aims at imparting education that enhances and enriches the intellect, noble, imaginative and creative self that lies deep within an individual. He follows different teaching pedagogies, more specifically Blended Learning. He is committed in taking constructive and purposeful actions to create optimistic and independent graduates, who will bring glory to the society at large. He has attended several conference and workshops in the field of 3D printing. He is also jointly working with orthopaedic society for 3D printing medical application. Research interest of Mr. Achyut included bio-manufacturing, new materials for FDM, drug- manufacturing. He is also member of professional bodies like SAE, ASTM, IAENG, ISTE.
Abstract:
Statement of Problem: Additive Manufacturing, popularly known as 3D Printing considers an essential element of the Industrial Revolution 4.0 mission. Despite having many advantages from traditional manufacturing like low material wastage, fast production time, ease of operation, etc. AM still constraints with limited use. Apart from the theoretical advantage of AM, there are still in-depth studies required to incorporate AM technology into the industrial sector. The present study mainly focused on the various challenges of adopting AM technology in the industrial sector. The study also aims to provide possible solutions to overcome the same. Methodology: Detailed literature survey and state art of research has been conducted to frame the possible solutions. Interactions with many industrial leaders using questionnaire techniques to identify the challenges at their levels. Findings: The AM technology still lack of many challenges like standardization to incorporate into industries. The technology is mainly prototyping driven hence still there are challenges for final part production using AM. Conclusion & Significance: Utilization of Additive Manufacturing in industrial sector still requires many challenges to addresses. The present study addressed the current challenges and respective recommendations are frames to incorporate AM technologies into Industrial sectors.