Research List

No.	Researcher	Title	Abstract	Year
2721	Kyaw Kyaw1, May Zin Nyein2, Hnin Yu Khaing3	DESIGN ON FDM BASED 3D PRINTING SYSTEM FOR INDUSTRIAL APPLICATIONS	This research work focus on the modelling and construction of fused deposition method (FDM) based 3D printing system, specifically focusing on optimizing the structural design and hot end thermal analysis for FDM 3D printers. The study explores strategies aimed at maximizing the accuracy and resolution of the 3D printed objects. By acknowledging the specific constraints and potentials in FDM 3D printing, researcher can better tailor their designs for FDM printing, thus enhancing outcomes. This research work emphasizes the importance of considering the capabilities and restrictions of the manufacturing method when it comes to the design process. In this research study, all the electronic and mechanical parts are successfully built and fully functional, the Cartesian coordinate positioning-based 3D printing machine printed 3d models with desired accuracy level. In terms of current regulation in Ramps controller, it was observed that the current regulator achieved the required output current to control motors such as stepper motors and heating elements, which was to simply control the current flowing on phase winding, even when facing input voltage ripple. In its real implementation, however, it was observed current spikes that might lead to motor overall life cycle reduction.	2025
2722	Nyo Mar Soe1, Soe Ko Ko Aung2 and Yin Maung Maung3	FABRICATION AND PROFILING OF TIO2 THIN FILMS VIA LOW TEMPERATURE SYNTHESIS	The focus on low-temperature processed electron transport layers (ETLs) has gained significant attention for the fabrication of flexible perovskite solar cells. In this study, anatase titanium dioxide (TiO2) nanoparticles were synthesized via a hydrothermal method and applied using the spin-coating technique, with annealing performed at 200 �C. X-ray diffraction analysis confirmed the crystal structures of the TiO2 film. Additionally, the UV-Vis spectrum revealed a high transmittance exceeding 80%. The energy band gap (3.25 eV) and thickness (542 nm) of the TiO2 film were determined through Tauc's plot method and Envelope method, respectively. These findings suggest that this straightforward approach to preparing TiO2 ETLs holds promise for integration into the fabrication of perovskite solar cells.	2025
2723	Cherry Moh Moh Than1, Zin Min Myat2, Zin Min Tun3, Yin Maung Maung4	ANALYSIS OF TiO2/ZnO LAYERS FOR PEROSKITE SOLAR CELLS: EXPLORING CRYSTALLINITY, CHEMICAL PROPERTIES, AND OPTICAL PERFORMANCE	The electron transport layer (ETL) was designed for perovskite solar cells (PSCs) using a sol-gel spin coating method on FTO glass substrates, including TiO2 and ZnO nanocrystals. Characterization using X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) implied the crystallinity and chemical properties of the FTO/TiO2/ZnO ETL layers. UV Vis measurements revealed TiO2 absorption within the range of 211 nm-226 nm and ZnO absorption from 302 nm-387 nm. The energy band gap values of TiO2/ZnO films showed their suitability as an ETL for PSCs. The study suggests that this ETL not only enhances electron transport and interfacial engineering but also holds promise as a light-harvesting layer in PSCs, attributed to its favorable crystalline quality, chemical characteristics, and optical performances.	2025
2724	Yin Myo Khaing1, Pyae Pyae Win2, Chit Su Aung3, Aye Moe Thae4, Soe Ko Ko Aung5	PREPARATION OF TIN OXIDE THIN FILMS BY CHEMICAL BATH DEPOSITION TECHNIQUE	To improve the performance of the perovskite solar cells (PSCs), the bottom Electron Transport Layer (ETL) is plays a critical role in extracting and transporting the photo-generated electrons as well as blocking holes to reduce charge recombination. In the present work, SnO2 thin films were prepared by chemical bath deposition method. The optical properties and surface properties of resulted films were characterized by using UV-vis spectrophotometry and water contact angle measurements. The optical band gap of SnO2-CBD (180?) and SnO2-CBD (500 ?) are found to be 3.42 eV and 3.88 eV respectively. Excellent transmittance of SnO2-CBD (180 ?) film showed over 90 % than that of SnO2CBD annealed at 500 ?. Hydrophobic properties of the surface are closely related to the crystalline behavior of the SnO2 films at 180 ? confirmed by Water Contact Angle measurement.	2025
2725	Chaw Su Myint1, Aye Moh Moh Myo2, Khin Than Tint3	DETERMINATION OF BRANCHING RATIO FOR THE RADIOISOTOPES OF ALPHA EMITTERS IN THORIUM DECAY SERIES EVENTS	The purpose of this research is to identify the decay branching ratios of five radioisotopes in thorium decay chain from their measured ranges and kinetic energies. Totally 50 thorium decay series events which were detected in nuclear emulsion of plate #5, Module #26 in J-PARC E07 experiment were analyzed. The type of radioisotopes of alpha emitters were identified with measured range and the range in emulsion obtained from empirical formula and Barkas� literature. Moreover, branching ratio for the radioisotopes of alpha emitters in thorium decay series events were obtained from their measured ranges and corresponding kinetic energies. The results are consistent with the results in Barka�s literature.	2025
2726	Phyoe Ei Ei Nyein1, Mu Thida Aung2, Win Pa Pa Hlaing3, San Yu Swe4	PHOTOLUMINESCENCE PROPERITES OF Pr3+ DOPED SrO-Li2O-ZnO B2O3 GLASSES FOR SOLID STATE LIGHTING	Pr3+ doped borate glasses with chemical composition of (60-x) B2O3 - 15ZnO -10Li2O - 15SrO - xPr2O3 (x = 0, 0.25, 0.50, 0.75 mol%) had been prepared by the melt quenching technique and characterized by X-Ray Diffractometer (XRD), UV-Vis Spectrometer and Photoluminescence (PL) Spectrofluorometer. The XRD pattern confirmed the amorphous state for all the glass samples. Optical absorption spectra comprise of four transitions as the prominent absorption spectra from the ground state 3H4 to the excited states within UV-Vis region. The excitation spectra of the Pr3+ doped glass samples were monitored at 605 nm. In the photoluminescence spectra the four peaks of down- converted emission bands are observed under excitation wavelength of blue light. The emission bands are centered at 485 nm (blue), 545 nm (green), 605 nm (orange) and 645 nm (red) at the visible region. Out of four bands, orange emission (605 nm) was the most intense. The intensity of the peaks in the emission spectra increase with increasing concentration of Pr3+ ions up to 0.50 mol% and then decrease. The results indicated that the glass sample with 0.50 mol% Pr3+ emits reddish orange color with highest intensity among the prepared glass samples.	2025
2727	Thei` Theint Theint Aung1, Wai Wai Khaing2, Nyein Thida3	SOLVING THE HARMONIC AND ANHARMONIC OSCILLATORS WITH MATRIX METHOD	Attempts have been made to investigate a simple technique for solving the Schr�dinger equation. This involved Matrix formulation of time independent Schr�dinger equation, matrix representation of position and momentum operators, harmonic oscillators and anharmonic oscillators. Then, the numerically exact Eigen values (i.e. the possible results of a measurement of energy) and Eigen vectors for models have been investigated through matrix method and relevant numerical simulations have been implemented using Mathematica coding.	2025
2728	Hsu Myat Lwin1, Swe Zin Aye2, Zin Min Tun3 and Cho Cho Thet4	CORE SHELL STRUCTURE OF NICKEL FERRITE MICROSPHERE FOR THE APPLICATION OF ENERGY STORAGE DEVICES	Carbon (C) coated on the surface of nickel ferrite (NiFe2O4) is a structure which could act as a protective layer to form a unique core-shell structure. The NiFe2O4 coated with C anode material shows improved lithium-storage performances since the carbon structure is considered to serve as a conductor of electrons and provide pathways for Li-ion diffusion to improve the electronic and ionic conductivities. Carbon electrodes achieve high capacitance, fast charge-discharge rate, and long cycle life for supercapacitors. In this study, pure and NiFe2O4 coated with C was synthesized by solvothermal method and followed by precipitation method. The optimum solvothermal temperatures were investigated by varying the temperatures including 110, 150 and 180 �C respectively. The core-shell structure was prepared based on the optimum temperature. The structural properties of the final product were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and the surface morphology was studied by Scanning electron microscopy (SEM).	2025
2729	Aye Aye Aung1, Zin Min Myat2, Thida lwin3, Wah Wah Thin4	TEMPERATURE DEPENDENCE OF HETEROGENEOUS CdO-NiO NANOCOMPOSITE THIN FILMS	This research aims to synthesize the CdO-NiO nanocomposite thin films deposited on fluorine tin oxide (FTO) glass substrates were prepared by spin coating method. Cadmium sulphate, nickel sulphate, ammonia and polyethylene glycol were used as the starting materials to obtain CdO-NiO nanocomposite powders by sol-gel method at 400 �C, 500 �C, 600 �C and 700 �C for 2 hrs. Then the precursor solution of CdO-NiO nanocomposite were coated on FTO glass substrates. The phase formation, structural properties and surface morphology of nanocomposite were characterized by X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The absorption wavelengths and energy band gap of CdO-NiO nanocomposite thin films were measured with the help of UV-Vis Spectroscopy. CdO-NiO nanocomposite thin films can be promoted further experimental studies such as thin films solar cells, memory devices and optoelectronic materials.	2025
2730	Cho Cho Zan1, Zin Min Tun2 and Cho Cho Thet3	EFFECTS OF BUFFER LAYER ON THE SURFACE MORPHOLOGY OF ZINC TIN OXIDE (ZTO) NANOSTRUCTURE	The surface morphology of photoanode materials is a crucial role for the utilizing as an active layer in dye sensitized solar cell (DSSC). The formation of surface morphology of zinc-tin oxide (ZTO) nanocomposite depending on the various buffer layer were investigated in this study. ZTO on three different buffer layer such as zinc oxide (ZnO), titanium dioxide (TiO2) and ZTO was grown by chemical bath deposition (CBD) method. The effects of growth time on the structural properties of nanocomposite were also examined by varying the growth time including 5, 10 and 15 h in the CBD process. The structural and morphological properties of the nanocomposite were confirmed by X-ray diffraction (XRD) and scanning electron microscope (SEM) results. It was found out that the different surface morphology of ZTO was obtained depending on materials of buffer layers. The increasing the growth time, the intensity of ZnO and TiO2 peaks were also increased in ZTO film. The formation of ZTO composite seemed to be larger 15 h than 5 h and 10 h. The influence of different seed buffer layer on the growth of ZnO-TiO2 composite structure was observed by the variation of morphologies. Nonoparticles, nanoflake and mixed nanostructure were formed for the films ZTO/ZnO, ZTO/TiO2 and ZTO/ZTO grown by CBD method.	2025

Research Publications

Myanmar Academy of Art & Science List of Research