Klongratog, Bhanupol
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Preferred name
Klongratog, Bhanupol
Alternative Name
Klongratog, B.
Klongratog, Bhanupo
Main Affiliation
Email
bhanupol.kl@kmitl.ac.th
17 results
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Item type:Publication, Kinetics of dye removal using Fe3O4 nanoparticles and pulsed white-LED illumination(2019-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Synthesis of Fe–Cu Alloys via Ball Milling for Electrode Fabrication Used in Electrochemical Nitrate Removal from Wastewater(2025-07-01); ; ; Srirach, PisanFe and Cu powders were mixed at a 50:50 ratio. Then, Fe-Cu alloys were prepared using the ball milling technique with different milling times of 6, 12, 18, 24, 30, 36, and 42 h. The crystalline structure was analyzed using X-ray diffraction (XRD), and it was found that the optimum milling time was 30 h. The homogeneity of the Fe and Cu elements in the Fe–Cu alloys was analyzed using the scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM–EDX) mapping technique. Additionally, the crystal orientation of the Fe–Cu alloys was investigated using transmission electron microscopy (TEM). To fabricate the cathode for nitrate removal via electrolysis, an Fe–Cu alloy milled for 30 h was deposited onto a copper substrate using mechanical milling, then annealed at 800 °C. A pulsed DC electrolysis method was developed to test the nitrate removal efficiency of the Fe–Cu-coated cathode. The anode used was an Al sheet. The synthesized wastewater was prepared from KNO<inf>3</inf>. Nitrate removal experiments from the synthesized wastewater were performed for durations of 0–4 h. The results show that the nitrate removal efficiency at 4 h was 96.90% compared to 74.40% with the Cu cathode. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Estimation of vertical jump height using nintendo Wii remote IR camera(2018-12-05); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Saline solution concentration measurement based on contact angle approach(2017-12-13); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Automated method for measuring the energy gap of p-n junction semiconductor diodes with the temperature-voltage method(2021-03-01); ; An automated system for measuring the energy gap E g of a p-n junction semiconductor diodes was presented in this study. The system, based on temperature-voltage (T-V) measurement, was designed and developed as a teaching tool to support teaching for undergraduate students. The energy gap of diodes was measured by varying the diode temperature from 273 to 343 K and by measuring the voltage drop across the diode while the bias current of diodes was kept constant at a specific value. In the proposed system, an Arduino UNO R3 microcontroller was employed to automatically acquire the temperature and voltage drop across the diode. T-V data were plotted, and then the slope and intercept were used to calculate the energy gap by a simplified diode equation. In this system, the temperature and voltage of the two diodes were measured simultaneously at different constant bias currents in the range of 10 μA-10 mA. The average E g value of 1.22 eV obtained in this work is in good agreement with that reported in the literature.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimizing fabrication processes for scalable production of flexible thermoelectric modules: A case study on self-powered IoT systems(2025-09-01); ; ; This study explores the optimization of fabrication processes for flexible thermoelectric generators (FTEGs) to enhance their performance and scalability for industrial applications, with a focus on integrating them into self-powered Internet of Things (IoT) systems. The research investigates the impact of silicone layer thickness and applied fabrication pressures on the mechanical stability, energy harvesting efficiency, and power output of FTEGs. Results demonstrate that reducing the thermal conductivity of the silicone filler and optimizing the fabrication pressure significantly improves the performance of FTE modules. The optimized FTEGs, featuring a series-parallel configuration, achieve a power density of 5.2 mW/cm² under a temperature difference of 50 °C, surpassing prior benchmarks. The developed system efficiently harvests waste heat, charges a battery, and powers an IoT module for real-time monitoring of temperature, humidity, and carbon monoxide levels. These findings highlight the potential of FTEGs as a sustainable solution for energy harvesting and self-powered industrial monitoring applications.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimization of the nitrogen content for room temperature rapid synthesis of CuI thin films via liquid iodination method using Cu3N film as precursor(2020-06-01); ; In this work, we demonstrate that CuI films can be obtained by the liquid–phase iodination method with the chemical reaction time only being 1 min between Cu<inf>3</inf>N and aqueous iodine solution at room temperature. This is a simple and eco-friendly method with high transparency and low resistivity. The Cu<inf>3</inf>N precursors were prepared by reactive DC magnetron sputtering using different N<inf>2</inf> partial pressures. The effect of nitrogen content of precursor (Cu<inf>3</inf>N) on the structural, electrical, and optical properties of CuI thin films was discussed. Electronegativity property was used to explain the growth mechanism of CuI films prepared by different nitrogen content in the precursor. By growing the CuI films with a N<inf>2</inf>:Ar gas ratio of 5:2, the average transmittance achieved was 75% in the visible spectral range, and the lowest resistivity achieved was 3.67 × 10<sup>–2</sup> Ω cm. These results suggest that the liquid iodination method using Cu<inf>3</inf>N film as precursor (N<inf>2</inf>:Ar gas ratio of 5:2) was suitable for preparing high-quality CuI films for application in transparent electronics.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Flexible thermoelectric generator with radiative cooling for body-heat-driven self-powered Bluetooth low energy sensing system(2025-10-01)1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Estimation of Vertical Jump Height using Capacitive Sensing Method(2023-01-01); ; 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of Red and Blue LEDs Light on Growth and Development of Chrysanthemum Callus(2025-07-01); ; Effects of LED illumination on callus induction from petals of Karaked and Scarlet chrysanthemums cultivated in MS medium supplemented with 2 mg/I NAA and 4 mg/l Kinetin, under white LED light (PPFD 30±2 µmol/m2/s) and red to blue light in the ratios 30:10, 40:15, and 30:3 (PPFD 50±2 µmol/m2/s) for 16 h. It was determined that a light ratio throughout 4 weeks culture period had no impact on the fresh weight of callus. Conversely, varying light proportions yield distinct callus dry weights. Upon evaluating cultivar parameters, it was determined that ‘Karaked’ exhibited more fresh and dry weight compared to the callus of the ‘Scarlet’. Analysis of Karaked’s callus showed that callus cultured under 30:3 red to blue LED light exhibited the largest concentrations of all photosynthetic pigments, the greatest levels of malondialdehyde (MDA) and total phenolic compounds, and the lowest EC<inf>50</inf> value for DPPH free radical inhibition. In the case of the Scarlet chrysanthemum, following 8 weeks of callus induction, it was observed that a light ratio of red to blue at 40:15 yielded the maximum concentrations of chlorophyll a and carotenoids. No statistical difference was seen in the quantity of chlorophyll b. The MDA content of Scarlet’s callus cultivated under white LED light was the highest, and the EC<inf>50</inf> value for DPPH free radical inhibition was also the highest. Callus produced under red to blue LED light ratios of 30:10, 40:15, and 30:3 exhibited greater quantities of phenolic compared to callus cultured under white LED light.1