Research List

No.	Researcher	Title	Abstract	Year
2731	May Myat Noe Ko Ko1, Kyaw Kyaw2	MODELLING AND CONSTRUCTION OF SMART SOLAR EV CAR	Android mobile phone plays a vital role in everyday life. This research work is planned to model and construct smart solar EV car that runs with solar energy, which helps reduce pollution and reliance on fossil fuels, making transportation cleaner and more sustainable. The constructed car has the following features, such as solar panel on its roof that convert sunlight into electricity, and storing it in a lithium battery. It includes navigation tools for monitoring energy usages in real time. The main components used in this research work are Arduino Uno, Bluetooth (HC-06), ultrasonic sensor (HC-SRO4), Infrared obstacle avoidance sensor (KY023), solar PV, lithium batteries, L298 motors Driver, 2 DC and servo motor. The performance of the smart solar car could be control with mobile phone and it makes an eco-friendly vehicle that relies on renewable energy. This system accepts to response its movement control through the Bluetooth protocol which is used latest technologies version likes as IOT (internet of things), WiFi and others.	2025
2732	Thi Thi Aye1, Nyo Nyo Myint2, Thein Aye3, San San Thwin4	SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITE EXTRACTED FROM THREE TYPES OF EGGSHELLS BY PRECIPITATION METHOD	In this research, hydroxyapatite (HAp) was synthesized from three types� eggshells (hen eggshells, quail eggshells, and duck eggshells) by using method of precipitation. Eggshells are a rich source of calcium carbonate, which corresponds to about 94% of the shell. Calcium carbonate (CaCO3) from eggshells and orthophosphoric acid (H3PO4) were used as precursor to produce hydroxyapatite (HAp). The major constituent calcium carbonate (CaCO3) three types� eggshells powder were heated temperature at 1000?C for 3h to obtain calcium oxide (CaO). The crystal structures, elemental concentrations of HAp powder were analyzed by X-ray diffraction (XRD), and energy dispersive X-ray fluorescence (EDXRF) techniques. And then, crystal structures, crystallite sizes of HAp powder were calculated from XRD data results. The ratio values of the calcium (Ca) to phosphorous (P) were calculated from the EDXRF results. Finally, the analysis of HAp was discussed from the calculation of all above result data. The hydroxyapatite product from waste eggshells (hen eggshells, quail eggshells, and duck eggshells) can reduce environmental pollutions. Therefore, the HAp powder was prepared in this study. The obtained hydroxyapatite powder has great potential in biomedical applications.	2025
2733	Khaing Cho Thet1, Hnin Sandar Tun2, Zin Min Myat3 and Cho Cho Thet4	EFFECTS OF CHEMICAL ACTIVATION PROCESS ON THE SURFACE MORPHOLOGY OF BROOM STICK -BASED ACTIVATED CARBON	The surface morphology of anode materials plays a crucial role in determining the electrochemical performance of supercapacitors. The porous structure and pore size of anode in supercapacitor facilitates the efficient ion transport and electrolyte diffusion. In this study, the surface morphology of broom stick based materials as an anode material of supercapacitor is investigated. Activated carbon (AC) from the broom stick was prepared by two different chemical activation processes. The structure of the broom stick AC was observed by scanning electron microscope (SEM). The pore structure and size depending on the activation temperatures in each method were investigated. It was found out that the structure and pore size of AC were different depending on the activation process and activated temperature.	2025
2734	Moe Moe1, Min Min Thein2	STUDY ON EFFECT OF MORPHOLOGY AND CRYSTALLIZATION OF TIO2 NANOTUBES AND SPECTRAL DEPENDENT IPCE (%) OF TIO2 NANOTUBES IN AQUEOUS SOLUTION	The formation of TiO2 nanotubes arrays were investigated in different electrolyte solutions. Three nanomaterials of TiO2 were prepared by electrochemical anodization using three different electrolyte solutions:0.5 wt.% NH4F with 4 wt.%, 6 wt.%, and 8wt.% of distilled water in ethylene glycol. SEM showed different morphologies caused by the variation in the water content of the solutions. By a change of the crystalline phase of the TiO2 nanotubes, the oxygen vacancies increased and affected to the optical and electrical properties of TiO2 nanotubes. To understand the interplay between the photoactivity and light absorption of TiO2 nanotubes annealed at 300?, incident-photon-to-current-efficiency of TiO2 nanotubes was investigated as the function of the wavelength of incident light. IPCE% is a better parameter reflecting the spectral dependent photon response of TiO2 nanotubes.	2025
2735	Hnin Yu Wai1, Zin Min Tun2 and Cho Cho Thet3	EFFECTS OF DRYING TEMPERATURES ON THE CRYSTALLITE SIZES OF METHYL AMMONIUM LEAD IODIDE PEROVSKITE ABSORBER LAYER	In recent years, perovskite solar cells have attracted as a potentially inexpensive and high performing materials for photovoltaic systems. The effects of drying temperature on the structural properties of methyl ammonium lead iodide (CH3NH3PbI3) perovskite film, absorber layer in perovskite solar cell, was investigated in order to use on an electron transport layer (ETL) in perovskite solar cell. Perovskite film at different drying temperatures was prepared by two-steps spin coating method. Zinc stannate (Zn2SnO4) materials for electron collection layer was synthesized by chemical precipitation method. The optimum drying temperatures of CH3NH3PbI3 perovskite absorber layer were varied by changing the drying temperatures at room temperature, 60, 100, and 150 �C respectively. The crystal structures of final products of each layer were characterized by X-ray diffraction (XRD) technique. The surface morphology of CH3NH3PbI3/Zn2SnO4/FTO films was observed by scanning electron microscope (SEM). The optimum drying temperature for perovskite absorber layer was found out to be 100 �C for 30 min in air.	2025
2736	Myint Myint Win1, Hnin Yu Khaing2, Kyaw Kyaw3	CONSTRUCTION OF PHOTODIODE BASED ACTIVE DETECTOR FOR RADON DETECTION	The main objective of this research work is to construct and analyze the photodiode based active detector for radon detection in air. It was intended to operate in pulse counting mode for real-time measurements. The constructed system is relatively simple, low-cost and reproducible, made of inexpensive and easy to acquire electronics components. The commercial low-cost Si-PIN planar photodiode SLCD-61N5 with an area of 10 ? 10 mm2 was used as a sensor for detection of alpha particles. An ATmega2560 microcontroller (MCU) based Arduino MEGA development was interfaced to the electrical circuit of the device to count the logic pulses and connected to a computer to send and save the detected data. Electrical pulse signals corresponding to the strike of the alpha particles on the photodiode, distinguishable from noise, were observed in the radon detection analysis. It was observed that the sensitivity response of the constructed system increased with a higher reverse voltage applied to the photodiode. The stability of the constructed radon detector was also analyzed for long-term measurements. It could be said that the constructed system detected the presence of radon gas in order to obtain exact concentrations values in air.	2025
2737	Zin Zin Phyoe1, Thandar Oo2, Htun Htun Oo3	INVESTIGATING PROTON STOPPING POWER AND RANGE IN ALUMINUM TARGETS	Proton beams biological effects depend on their stopping power, defined as the rate at which a material absorbs the kinetic energy of a charged particle. The Bethe-Bloch formula is used for the calculations of stopping power of proton in aluminum, the incident proton energies ranging from 0.1 MeV to 100 MeV. The mean excitation energy which is a crucial parameter is also explored for accurate stopping power calculations. Stopping power and range values were computed using a FORTRAN-90 program, showing close agreement with SRIM-2013 databases.	2025
2738	Mar Mar Htay1, May Zin Oo2, Khin Than Tint3	ANALYSIS OF ELEMENTAL CONCENTRATIONS IN AGRICULTURAL SOIL AND VEGETABLE SAMPLES IN SIN GYAUNG LAY VILLAGE OF PYIN OO LWIN TOWNSHIP	The present study investigated the elemental concentrations of agricultural soil and seasonal vegetables in Sin Gyaung Lay village of Pyin Oo Lwin township, Mandalay Region. The elemental concentrations of agricultural soil samples and vegetable samples were analyzed by using Energy Dispersive X-Ray Fluorescence Spectrometry (EDXRF) and Atomic Absorption Spectroscopy (AAS) techniques. The results obtained Mn ranged from 0.16 % to 0.52 %, Fe ranged from 18.60 % to 26.80 %, Ni ranged from 0.05 % to 0.08 %, Cu ranged from 0.03 % to 0.04 %, Zn ranged from 0.26 % to 0.34 %, As ranged from 0.01 % to 0.02 %, Pb ranged from 0.06 % to 0.13 % respectively in agricultural soil samples. The results obtained show that the concentration of Mn ranged from 0.04 % to 0.17 %, Fe ranged from 0.69 % to 0.97 %, Ni ranged from 0.05 % to 0.10 %, Cu ranged from 0.04 % to 0.07 %, Zn ranged from 0.16 % to 0.19 % were found in vegetable samples, while that Pb value 0.003 % was found in Yellow Mustard sample. According to the AAS analysis, the concentrations of Cr, Cu, Zn, Cd and Pb in soil and vegetable samples were found to be within the WHO standards. However, the concentration of Mn slightly exceeded the WHO value in soil sample S-3. The transfer factor for Pb was consistently found to be 1 in all samples, while the transfer factors for Mn, Fe and Zn were less than 1. Additionally, the transfer factor values for Cu and Cd were greater than 1. The findings highlight the importance of regular monitoring and sustainable agricultural practices to mitigate heavy metal contamination in food crops.	2025
2739	Win Moh Moh Maung1, Hnin Yu Khaing2, Kyaw Kyaw3	DESIGN ON RADIO FREQUENCY IDENTIFICATION (RFID) BASED SMART DOOR LOCK SYSTEM	A smart door lock is an electric lock that allows unlocking and locking without keys. Classical locking systems, such as lock and key, Deadbolts, Door chain and Mortise locks, have usages and security limitations. The main objective of this research work is to design and construct RFID-based smart door lock system with Arduino UNO development board. When a predefined or programmed ID card was located and swiped in front of an RFID reader module, the lock was slide and opened and short pulse of alarm sound produced through the buzzer. When there is no RFID card, the door could be opened with Bluetooth protocol from the mobile phone. The duration of the open and close condition is assigned as 5 s for proper door crossing. It could sense the human and big thing which are passed through the door for longer than 5 s, the constructed system automatically adjusted the duration of the door for opening and closing. By using this system, the security of the home can be enhanced and smart living style can also obtain with very low cost.	2025
2740	Saw Yu Mon1	TWO TYPES OF PRESERVING OPERATORS AND THEIR STABILITY*	In this paper, we first introduce orthogonality preserving operators, approximately orthogonality preserving operators on inner product spaces and their properties. Next, we discuss some properties of orthogonality preserving operators and approximately orthogonality preserving operators that are true for right-angle preserving when the operator is linear. Finally, we show the stability between approximate right-angle preserving and right-angle. preserving.	2025

Research Publications

Myanmar Academy of Art & Science List of Research