Research Publications

Academic theses and dissertations are regularly published and widely disseminated in YUOE Journal, Monographs, Universities Research Journal (URJ), Myanmar Academy of Arts and Science (MAAS) Journal, AsTEN Research Journal and International online Journals for sharing knowledge and contributing to the development of our education.

Myanmar Academy of Art & Science List of Research

No. Researcher Title Abstract Year
371 Saw Thiri SYNTHESIS OF SILVER NANOWIRES USING NACL ASSISTED ETHYLENE GLYCOL MEDIATED POLYOL METHOD The synthesis of silver nanowires (AgNWs) from AgNO3 through ethylene glycol mediated polyol process with the assisted of polyvinylpyrrolidone (PVP) and a NaCl. The surface morphologies and crystallinity of silver nanoparticles are analyzed by Scanning Electron Microscopy (SEM), XRD and UV-Vis. The UV-Vis spectra showed the typical surface plasmon absorption maxima around 465 nm, 436 nm, 414 nm, 399 nm and 350nm. SEM results revealed that the diameter of silver nanowires (AgNWs) were (AgNps). XRD studies reveal a high degree of crystallinity and monophase silver nanowires (AgNWs). The polyol synthesis of silver nanowires (AgNWs) produce ultralong and thin nanowires. 2019
372 Su Myat Aung CHEMICAL BATH DEPOSITION OF ZINC OXIDE NANOFLOWER FILM ON SILVER NANOPARTICLE SEED LAYER Zinc oxide nanoflower with hexagonal structure was achieved by using chemical bath deposition method under atmospheric pressure by using zinc nitrate hexahydrate [Zn(NO3)2.6H2O] and hexamethylene-tetramine (C6H12N4) at constant temperature 93ºC and the deposition time of 2 h. The prepared the film was grown on the suface of silver nanoparticles. The surface morphologies and the structural characterization of zinc oxide (ZnO) nanoflowers and silver nanoparticles were characterized by Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) technique. The SEM results revealed that the petal lengths of the zinc oxide (ZnO) nanoflowers were up to more than 2 nm in diameter from 200 nm to 300 nm. The XRD pattern of the sample revealed that ZnO nanoflowers have hexagonal crystallite structure. 2019
373 Aung Zaw Oo GPS-GSM BASED LOCATION AND POSITION TRACKING SYSTEM This research work reveals the location and position tracking system based on GPS (Global Positioning System) and GSM (Global System for Mobile Communication) modules. Location and position tracking system is constructed with NEO-7M GPS Module, SIM900A GSM module, MPU- 6050 gyroscope sensor and Arduino Mega microcontroller. The constructed system is used for vehicle tracking system. Arduino microcontroller is used as main control device. GPS module connects the GPS satellites and receives geographic coordinate data at regular time interval. MPU-6050 senses the position of object. GSM module transmits the GPS location and position of the system to mobile phone through SMS (Short Message Service). GPS location and position data are sent to database server through GSM network. Location and position of system can be viewed on Google map with the help of software via the internet. 2019
374 Zin Bo Htut CHARACTERIZATION OF PEROVSKITE-TYPE XSnO3 (WHERE X= Ca, Sr AND Ba) CERAMICS Perovskite-type CalciumTin Oxide (CaSnO3), Strontium Tin Oxide (SrSnO3) and Barium Tin Oxide(BaSnO3) were prepared by solid state reaction method. Analytical reagent (AR) grade CaCO3, SrCO3,BaCO3 and SnO2 were used as the starting materials with equal molar ratios. The samples were characterized by XRD and SEM.XRD patterns indicated that the samples belong to orthorhombic structure for CaSnO3 and SrSnO3 ceramics and cubic for BaSnO3. The lattice parameters were obtained as a = 5.4982 Å, b = 5.6356 Å and c = 7.8651 Å for CaSnO3, a = 5.7079 Å, b = 5.7072 Å andc = 8.0708 Å for SrSnO3 and a = b = c = 4.1114 Å for BaSnO3 respectively. The crystallite sizes were also obtained as 42.17 nm for CaSnO3,47.34 nm for SrSnO3 and 51.75 nm for BaSnO3 and the obtained crystallite sizes showed that the samples were nanosized ceramic materials. From the SEM micrographs, the grain sizes were obtained as in the range of0.55 ?m – 0.58 ?m. Electrical conductivities of the samples were investigated in the temperature range of 303 K – 773 K. Electrical conductivity and activation energy of the samples were studied. 2019
375 Wai Khaing Moe SYNTHESIS AND CHARACTERIZATION OF MAGNESIUM-ZINC FERRITE PREPARED BY FLASH-COMBUSTION TECHNIQUE Magnesium-Zinc Ferrite, Mg1-xZnxFe2O4 (where x=0.50) was prepared by flash-combustion technique. The sample was characterized by XRD, SEM and FTIR-spectroscopy to study the structural, microstructural and vibrational characteristics. XRD pattern revealed that the sample analogous to cubic structure with the lattice parameters a=b=c=8.3512 Å. The crystallite size was obtained as 47.96 nm and showed that the sample was the nanosized material. SEM micrograph showed that the grain shape of the sample was spherical with the grain sizes of 0.20 ?m – 0.50?m. Vibrational characteristics of tetrahedral site and octahedral site atoms were studied from the collected FTIR spectrum. Temperature dependent electrical conductivity and humidity sensitive electrical properties of the sample were observed for the applications of humidity sensing materials. 2019
376 Tin Tin Htay PHANTOM SCALAR FIELDS AND ITS PHYSICAL IMPLICATIONS Equations of state are utilized to explore the possible constrains on dark energy models and their relevant physical quantities such as density parameter, pressure and etc., are investigated. As the situation dictates, physical interpretation and visualizations of the results obtained are performed. 2019
377 Hla Hla Maw DYNAMICAL SYSTEMS APPROACH TO FRW MODELS Dynamical systems approach to FRW models have been presented. Some techniques of non-linear dynamics have been utilized to find evolution equations. Visualization of stable and unstable points have been performed and a brief discussion for the results obtained has been given. 2019
378 Nyein Thida THEORETICAL AND NUMERICAL ASPECTS OF GRAVITATIONAL WAVES It has been attempted to give a brief description of gravitational waves and its underlying physics for both theoretical and numerical aspects. First of all, the theoretical background of long sought gravitational waves (GWs) and its related connection to astrophysics and cosmology have been given in detail. Then, the accelerating charge, accelerating mass and amplitude of GWs are theoretically and numerically investigated within the framework of general relativity, classical mechanics and statistical mechanics points of view. 2019
379 Yee May Thwin AN ANALYSIS OF NUMERICAL HYDRODYNAMICS FOR SPHERICALLY SYMMETRIC SPACETIMES The interesting features of numerical hydrodynamics for spherically symmetric spacetimes has been presented in the context of general relativity. Some distinct results are visualized and physical interpretations have been given. 2019
380 Naing Naing Wint Htoon SIMPLE SIMULATIONS OF MASSLESS SCALAR FIELD MINIMALLY COUPLED TO GRAVITATIONAL FIELD Simple simulations have been implemented for Massless Scalar Field Minimally Coupled to Gravitational Field within the framework of general relativity and astrophysics. Distinct features of 1-D Einstein-Klein-Gordon (EKD) system have been utilized and interesting simulations for physical properties have been carried out. 2019