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
901 Thin Thin Kyu PREPARATION AND CHARACTERIZATION OF SELECTED BIOCHAR FROM BIOLOGICAL WASTES Biochar is a solid material that is produced by heat decomposition of biological wastes biomass. The experiments were carried out to study the characterization of the Coconut Husk and Areca nut Husk biochar. The Coconut Husk and Areca nut Husk were heated at 300?C for 1h in muffle furnace and ground into the uniform powder. The most important properties that provide information about the fuel were proximate analysis such as moisture, ash content, volatile matter and fixed carbon contents. The fixed carbon content of Coconut Husk and Areca nut Husk were measured to be 10 mf wt%. The structural characterizations of Coconut Husk and Areca nut Husk biochar were identified by X-ray diffraction (XRD) technique. The Fourier transform infrared spectroscopy (FTIR) analysis showed the presence of a variety of functional groups of Coconut Husk and Areca nut Husk biochar. Scanning Electron Microscope images of the biochar were obtained for morphological features analysis. 2020
902 Zin Mar Myint PHYSICSOCHEMICAL PROPERTIES OF SURGANE BAGASSE BIOMASS WITH ACTIVATED CARBON (ACs) AS RENEWABLE ENERGY Biomass is an industry term for getting energy by burning wood, plants and animal waste and other organic matter in nature. In this research, sugarcane bagasse biomass has been used as a raw material for the preparation of different activated carbons. Sugarcane bagasse is a solid residue, consisting of the dry fibrous mass remaining after the juice is extracted, which can cause serious environmental problem if disposed inadequately. The aim of this study was to use the bagasse in the preparation of activated carbons (ACs) followed by pyrolysis at 300°C, 400°C, and 500 °C for 1 h respectively. The sugarcane bagasse biomass was characterized by instrumental analysis such as infrared spectroscopy (FTIR), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Also, the pH and electrical conductivity (EC) of biomass was determined for physical properties. According to the experimental results, sugarcane bagasse biomass gave good strength results as well as the potential to be used as the source of energy. The results of this study present a simple, economical and environment-friendly method of improving the growth and enhancing the renewable energy in Myanmar. 2020
903 Kyaw Kyaw EXPERIMENTAL STUDY ON STRUCTURAL, MICROSTRUCTURAL AND ELECTRICAL CONDUCTIVITY OF MAGNESIUM DOPED NICKEL-COPPER-ZINC FERRITES Magnesium doped Nickel-Copper-Zinc ferrites with the general formula Ni0.6-xMgxCu0.2 Zn0.2Fe2O4 (where x = 0.0 – 0.6 with the step of 0.2) were prepared by solid state reaction method. The samples were characterized by X-ray Diffractometry (XRD), Scanning Electron Microscopy (SEM) and temperature dependent electrical conductivity measurement. XRD confirmed the presence of spinel phase cubic crystalline as major phase of the as-prepared samples. The lattice parameters and average crystallite sizes of the samples were investigated from the observed XRD patterns. The samples were made into pellets and the temperature dependent dc electrical conductivities were studied by using two-probe method. Electrical conduction mechanism and the activation energy were studied. The obtained electrical conductivity results reveal that the samples (x = 0.0, 0.2 and 0.4) were normal ionic conductors and the sample x = 0.6 was superionic conductor at high temperature. 2020
904 Phyo Phyo Thida Aung STUDY ON STRUCTURAL, MICROSTRUCTURAL AND VIBRATIONAL CHARACTERISTICS OF NANOSIZED COBALT-ZINC ALUMINATES Nanosized Cobalt-Zinc Aluminates with the formula Co1-xZnxAl2O4 (where x = 0.00, 0.25, 0.50, 0.75 and 1.00) were prepared by solid state reaction method by using Analytical Reagent (AR) grade CoO, ZnO and Al2O3. Structural, microstructural and vibrational characteristics of the samples were studied by XRD, SEM and FTIR spectroscopy. XRD patterns showed all characteristic peaks of the spinel structure and confirmed the phase formation indicating the absence the others impurity phases. The observed peaks perfectly matched with the crystalline phase of cubic spinel structure with the identification of satndard JCPDS. The crystallite sizes were estimated by using DebyeScherrer’s formula to examine the nanosized aluminates materials. SEM micrographs showed that the samples were cauliflower shapes and composed of agglomerated particles with poor grain boundary. FTIR spectra indicated that the stretching vibrations of divalent cations (?1-mode) and trivalent cations (?2-mode) of the samples. These two modes indicated that the vibrational characteristics of Co1-xZnxAl2O4. 2020
905 Lwin Mg MgThwin APPLICATION OF LQR CONTROL FOR TWO-WHEEL SELF-BALANCING ROBOT The concept of two-wheel self-balancing robot is based on an Inverted pendulum (IP) on a cart. The control of an IP has been the most popular benchmark, among others, for teaching and researches in control theory and robotics. The implemented control technique is full state feedback control, Linear Quadratic Regulator (LQR). The LQR algorithm is essentially an automated way of finding an appropriate state-feedback controller. The full state system information about the position and velocity of the cart are obtained from encoder on dc motor and angular position and angular velocity of the pendulum are obtained from IMU sensor MPU6050. A complimentary filter was used to weigh the accelerometer and gyro signals together to determine the pitch angle. This two-wheel self-balancing robot was implemented by using the Arduino Mega microcontroller. The microcontroller can be programmed with the Mathworks® Simulink® program using the Rensselaer Arduino Support Package. 2020
906 Toe Toe Wai STRUCTURAL INVESTIGATION OF PEANUT SHELL BIO-CHAR Bio-char were prepared from peanut shell by thermal conversion of biomass. Peanut shells were dried in sun-shines to remove moisture. The dried peanut shells were ground to become powder and heated at 200 °C - 800 °C for 1 h respectively. After heating, bio-char was obtained. Structural properties of peanut bio-char were examine by X-ray diffraction (XRD). Scanning electron microscopy (SEM) was used to observe microstructure of bio-char. Functional groups in these bio-chars were investigated by Fourier transform spectroscopy (FT IR). 2020
907 Khaing Nway Win ELEMENTAL AND MICROSTRUCTURAL CHARACTERIZATIONS OF IRON CONCRETION A sample of Iron concreation is taken from the Moenyin Township, Kachin State. The elemental and characterization of this iron concretion are examined by utilizing XRD (X-ray diffraction) and EDXRF (Energy Dispersive X-ray Flurorescence) which are very useful for qualitative and quantitative analysis. The microstructural of iron concretion was studied by SEM(scanning electron microscopy). This study shows the different minerals in the sample and provide valuable information. 2020
908 Me Me Aung PREPARATION OF TiO2 PHOTO ELECTRODE FOR DYE- SENSITIZED SOLAR CELLS APPLICATION Green synthesis of TiO2 nanoparticles was produced by Aloe Vera leaf. The structural properties of TiO2 nanoparticles were characterized by X- ray diffraction (XRD). The chemical properties of TiO2 nanoparticles were analyzed by Fourier Transform Infrared Spectroscopy (FTIR). The surface morphology and optical properties of TiO2 nanoparticles were characterized by Scanning Electron Microscopy (SEM) and Ultraviolent Spectroscope (UV-Vis) measurements. According to experiment result, the extraction of Aloe Vera leaf dyne solution was performed and employed as natural dyne sensitizer in DSSC. 2020
909 Aye Myint Moh THE HETEROEPITAXIAL GROWTH OF ?-CONJUGATED ORGANIC MOLECULES ON INORGANIC SINGLE CRYSTAL SAPPHIRE SUBSTRATE The structure of organic semiconductor layers strongly affects the performance of the organic semiconductor-based devices such as organic thin film transistors (OTFTs), organic field effect transistors (OFETs), organic light emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). The layer structure such as preferred orientation is controlled by the heteroepitaxial growth of organic molecules on different type of substrates. The ?-conjugated organic semiconductor materials were deposited on single crystal sapphire substrate by vacuum thermal evaporation. The heteroepitaxial growth of ?-conjugated n-type semiconductor of N, N'-dioctyl3,4,9,10-perylenedicarboximide (PTCDI-C8) and p-type semiconductor of 2,7-dioctyl [1] benzothieno [3,2-b][1] benzothiophene (C8-BTBT) on single crystal Al2O3 sapphire substrates were investigated by X-ray diffraction analysis and atomic force microscopy observation. The (001) out-of-plane orientation of organic layers were developed on single crystal sapphire substrates for all prepared samples irrespective of the deposited organic materials we used in this research. The needle-shape PTCDI-C8 grains and layer-by-layer islands growth of C8-BTBT layers on (0001) C-sapphire substrate were observed in AFM observation. The PTCDI-C8 and C8- BTBT layers showed characteristic of its absorption spectra. 2020
910 Khaing Khaing Min FABRICATION AND CHARACTERIZATION OF ZnO/Si FILM FOR SOLAR CELL APPLICATION The crystalline state of undoped ZnO power was examined by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Zinc Oxide thin film was fabricated on the p- Si (100) substrate structure by single wafer spin processor at 500?C and 600?C. The surface morphology and microstructural properties were examined by Scanning Electron Microscopy (SEM). I-V characteristics (illuminated I-V) were investigated by monochromatic halogen lamp (100W). From the current and voltage characteristics under illumination, conversion efficiency (?con) and fill factor (Ff) were observed for the cell. The results obtainted were quite suitable and application in used for solar cell application. 2020