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SI - Physical Society of Indonesia Sarijadi Blok 2 No 22 RT 008, RW 002, Kel. Sarijadi, Kec. Sukasari, Bandung, Jawa Barat, Indonesia. Kode Pos : 40151 ,mail: psi@fisika.or.id
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Journal of The Physical Society of Indonesia
Published by Physical Society of Indonesia
ISSN : -     EISSN : 26853841     DOI : https://doi.org/10.35895/jpsi.xxx
Core Subject : Science,
Physics
The Journal of the Physical Society of Indonesia JPSI provides an international platform for advancing knowledge in physics emphasizing high quality research that spans theoretical experimental and applied domains JPSI welcomes submissions that push the boundaries of traditional physics disciplines while fostering interdisciplinary collaboration JPSI focus includes but is not limited to the following areas Astrophysics and Astronomy Exploring cosmic phenomena stellar evolution galactic dynamics and the frontiers of observational and theoretical astrophysics Nuclear and Radiation Physics Investigating reactor physics radioisotope applications particle interactions and neutron scattering techniques Atomic and Molecular Physics Delving into the quantum behavior of atoms and molecules spectroscopy and fundamental processes at micro and nanoscale levels Biophysics Bridging physics and biology to understand complex systems biomechanics and biophysical processes Condensed Matter Physics Examining the properties of solids and liquids including superconductivity magnetism and quantum materials Energy Physics Researching renewable energy energy storage and physics based innovations in sustainable energy solutions Geophysics and Atmospheric Physics Addressing Earth dynamics seismic phenomena meteorology climatology and atmospheric processes Material Physics Unveiling the synthesis characterization and application of advanced materials including nanomaterials and photonics Mathematical and Computational Physics Developing and applying mathematical models and computational techniques to solve physical problems across disciplines Optics and Quantum Physics Investigating the behavior of light optical systems quantum phenomena and emerging quantum technologies Particle Physics Studying the fundamental particles of the universe their interactions and implications for cosmology and beyond Physics Education Enhancing teaching methodologies curriculum development and innovative approaches in physics education Interdisciplinary Approach JPSI encourages interdisciplinary studies that combine physics with fields such as engineering biology chemistry and computational sciences The journal fosters a confluence of ideas methodologies and discoveries that contribute to the broader understanding and application of physics ASJC Code 3100 General Physics and Astronomy JPSI is committed to publishing research that not only advances the understanding of physical phenomena but also contributes to the practical and theoretical frameworks that shape the future of science and technology
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 20 Documents
 1   2 
A Quantum Mechanical Aspect of Cold Fusion Makar, Ayan Kumar
Journal of the Physical Society of Indonesia Vol. 1 No. 1 (2025): (April 2025)
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.1.61-75.2025

Abstract

The current study presents a quantum mechanical model for low-energy nuclear fusion in a deuterium-loaded palladium lattice, based on the modification of the Coulomb interaction between deuterons due to environmental screening effects. In this framework, deuterons are treated as charged bosons embedded in a conductive metallic lattice, where their mutual repulsion is significantly reduced by the surrounding conduction electron cloud and collective plasma behavior. The interaction is modeled using a screened Coulomb (Yukawa-type) potential, and the probability of nuclear fusion is evaluated through a semiclassical WKB approximation. Numerical estimates incorporating realistic deuteron densities and lattice parameters yield tunneling probabilities and fusion rates consistent with non-negligible low-temperature fusion activity. The results obtained indicate that under high deuterium loading conditions, the environment-induced screening of the Coulomb barrier can enhance tunneling sufficiently to allow measurable fusion rates, offering a plausible mechanism for solid-state fusion without the need for extreme thermal conditions as one of the aspects of cold fusion.
Existence of Fiber Bragg Grating Sensors Based on Power Input and Transmission Distance Saktioto, Saktioto; Bintang, Shantela Hanna Mastaria; Emrinaldi, Tengku; Zamri, Zamri; Samudra, Mohd Rendy; Soerbakti, Yan
Journal of the Physical Society of Indonesia Vol. 1 No. 1 (2025): (April 2025)
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.1.45-50.2025

Abstract

Optical fiber was chosen as a transmission medium because of its ability to transmit data with high power, high speed and low attenuation. Despite these advantages, optical fiber still faces challenges such as attenuation and dispersion which can reduce data transmission performance. This research examines the performance of fiber optic-based communication systems using fiber Bragg grating (FBG) sensors, especially in overcoming linear effects that affect transmission quality. In designing this system, researchers varied the transmission distance from 10 – 150 km, and adjusted the input power from 2 – 20 dBm. The research results show that uniform FBG is more effective in improving signal quality and reducing transmission errors compared to Gaussian FBG. The use of FBGs on coarse wavelength division multiplexing (CWDM) channels also improves system performance, with better quality factors and reduced bit error rates (BER). However, at a distance of more than 60 km, the signal quality decreases due to high noise, which also reduces the Q-factor value, the Q-factor value drops significantly from 61.7699 to 3.0866. Overall, uniform FBG provides more stable and robust data transmission, and increases transmission capacity compared to Gaussian FBG
Automation of Air Humidity Monitoring and Control for Orchid Plants Using BME280 Sensor Based on IoT Margareta, Regi Tia; Yoanda, Alya Putri; Rahma, Diana Mauli; Ayu, Jutira; Arsyad, Fitri
Journal of the Physical Society of Indonesia Vol. 1 No. 1 (2025): (April 2025)
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.1.51-60.2025

Abstract

Air humidity is one of the important indicators in supporting the growth and development of plants. Mismatched humidity levels with plant needs can hinder their growth and cause root and stem rot. One type of plant that requires a certain humidity level is the Cymbidium orchid, which ideally needs air humidity between 60% and 80%. However, the fulfillment of this humidity requirement is generally still done manually, requiring time and human labor. To address this issue, an air humidity automation system is needed that can be monitored remotely to ensure the needs of the plants are met optimally. This study aims to design an Internet of Things (IoT) based air humidity automation system using the NodeMCU ESP32 microcontroller as the main control unit programmed through Arduino IDE software. This system has a BME280 sensor as a humidity detector and a mist maker as an actuator that produces cool mist to maintain humidity in the Cymbidium orchid planting space. The system monitoring is done remotely via the Blynk IoT application on smartphones. The research results show that this system successfully implemented the BME280 sensor in air humidity automation, with an average precision value of 98.91%, an accuracy of 98.98%, and an error rate of 0.076%.
Development of Health Kiosk Prototype for Blood Pressure and Fat Mass Measurement Umiatin, Umiatin; Putri, Pinkan Amanda; Purwalaksana, Ahmad Zatnika; Al Farizy, Firnas; Nurdin, Muhammad; Purnama, Bedy; Ifa, Rista Putri Nur; Abidin, Muhammad
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.76-86.2025

Abstract

Health development in Indonesia faces a double burden of disease, namely infectious and non-communicable diseases (NCDs), with cardiovascular diseases (CVDs) accounting for nearly half of NCD-related deaths. Major CVD risk factors are hypertension and obesity, which can be controlled through routine monitoring of blood pressure and body mass index (BMI). This study aims to develop a health kiosk prototype integrating a sphygmomanometer and BMI–fat analyzer. The research consists of three stages: characterization of sensors for blood pressure and body fat measurement, comparison of proximity sensors, and prototype testing. The MPX5050GP pressure sensor achieved an R² of 1 with a sensitivity of 0.012 volts. Proximity sensor characterization showed R² values of 0.9996 (HC-SR04) and 0.9997 (JSN-SR04T), with sensitivities of 0.9943 cm and 0.9831 cm, respectively. The load cell reached an R² of 1 with a sensitivity of 1.0056 kg, while the AD5933 impedance showed R² = 1 and a sensitivity of 0.9999 Ω. Prototype trials with ten samples indicated that blood pressure, BMI, and fat mass measurements were feasible but not yet optimal, with errors in height measurement and limitations in the blood pressure algorithm. Despite these challenges, the successful integration of the sphygmomanometer and BMI–fat analyzer was achieved.
Synthesis and Characterization of ZnO@SiO₂ Composite for Microwave Absorber Applications Fauzan, Muhammad; Bakti, Aditia Nur; Trivida, Elvina; Dewi, Nova Nur Elisa; Triyono, Djoko; Sugihartono, Iwan
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.116-122.2025

Abstract

This study aims to synthesize ZnO@SiO₂ composites via biosynthesis using Moringa oleifera leaf extract and to investigate the effect of different SiO₂ contents (pure ZnO, 1%, 3%, and 5% by weight) on their structural and microwave absorption properties, with ZnO prepared from a Zn(NO₃)₂·4H₂O precursor and calcined at 450 °C for 2 hours. The synthesized samples were characterized using X-ray Diffraction (XRD) and a Vector Network Analyzer (VNA). XRD results confirmed that all samples exhibited a hexagonal wurtzite crystal structure with space group P6₃mc and showed no secondary phases. The crystallite size decreased with increasing SiO₂ content, indicating nanoparticle formation and reduced crystallinity. VNA measurements showed that the ZnO@SiO₂ sample with 3% SiO₂ exhibited the best microwave absorption performance, with a minimum reflection loss (RL) value of –2.0251 dB at a frequency of 6.125 GHz. These results suggest that the 3% composition achieved better impedance matching and enhanced absorption efficiency.
Automation of Orchid Soil pH Using IoT-Based Soil pH Sensor (SKJ-001) Komaria, Putri Nur Hidayah; Yoanda, Alya Putri; Rahma, Diana Mauli; Ayu, Jutira; Margareta, Regi Tia; Assa’idah, Assa’idah; Arsyad, Fitri Suryani
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.98-115.2025

Abstract

The growth and development process of cymbidium orchids requires a soil pH of around 5.5–6.5. Otherwise, it will cause low nutrient absorption, resulting in yellow leaves and slow growth, while too high a pH can cause the plant's roots to die. Therefore, this study developed an IoT-based ESP32 soil pH automation design to maintain soil pH stability and reduce orchid growth and development failures due to unstable soil pH. The IoT-based ESP32 soil pH automation design allows remote monitoring of soil pH conditions via a smartphone that has downloaded the Blynk application. The soil pH automation design consists of an SKJ-001 soil pH sensor to measure soil pH, an HC-SR04 ultrasonic sensor to measure solution height, and a 5 VDC pump to circulate NaOH and HCl solutions to stabilize pH. This soil pH automation system has been tested on ten soil samples with an average accuracy of 98.606%, an average precision of 99.192%, and an average error of 0.581%. Based on these results, it can be concluded that the IoT-based ESP32 soil pH automation system is effective and reliable in maintaining soil pH stability, thereby supporting optimal growth and development of cymbidium orchids.
Synthesis of rGO-TiO2 Composite for Al-ion Battery with Enhanced Electrical Conductivity Afian, Ruli; Faizal, Ferry; Panatarani, Camellia; Joni, I Made
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.87-97.2025

Abstract

Alternative batteries to lithium-ion are attracting growing attention due to the urgent demand for high energy density and limited lithium resources. Aluminum-ion (Al-ion) batteries are promising since aluminum is abundant, recyclable, and inexpensive. They also provide theoretically high specific energy and power through a three-electron redox reaction. However, challenges remain because no positive electrode material has yet shown efficient and reversible aluminum-ion storage. This study reports the synthesis of a reduced graphene oxide–titanium dioxide (rGO–TiO₂) composite and its evaluation as an electrode for Al-ion batteries. The rGO–TiO₂ composites were prepared by hydrothermal reaction with TiO₂ contents of 2, 5, and 10 wt.%. Characterization using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) confirmed that graphite oxide (GO) was successfully reduced to rGO, as indicated by a peak at 2θ = 24.30°. Electrochemical testing of rGO–TiO₂ based Al-ion batteries showed improved ion diffusivity of 1.39 × 10⁻⁶ – 3.83 × 10⁻⁶ cm/s and charge–discharge capacities of 6.9–7.2 mAh/g at 1C (0.1–0.3 mA·g⁻¹). These results demonstrate the key role of enhanced ion diffusivity in advancing high-performance Al-ion batteries.
An Analytical Solution for Advection-Diffusion Equation with Advection–Dominated Term using Multiple-Scale Expansion Methods Sulaiman, Albert; Mubarak, Mubarak
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.123-135.2025

Abstract

In this study, we solved the advection-diffusion sediment transport equation by taking into account the settling velocity and employing a multiple-scale expansion to approximate the dominant advection. We obtained an analytical solution in terms of the Green’s function.  The model results showed that, during one tidal cycle, TSS was concentrated at the surface and eventually transported to the sea. The pattern of TSS distribution was consistent with both constant and linear time-dependent river discharge. The simulation revealed that the concentration of TSS offshore was higher than near the estuaries, in agreement with our observations.
Absorbance Characteristics of Chlorophyll Extracts of Spinach (Amaranthus Hybridus & Amaranthus tricolor) and Water spinach (Ipomea spp.) as Sensitizers Iqbal, Iqbal; Basri, Zainuddin; Adyatma, Abyudan; Khaeroni, Rany; Darwis, Darmawati
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.145-154.2025

Abstract

The development of dyes has moved from natural sources, such as minerals, plants, and animals, to synthetic substitutes since the discovery of mauveine in 1856. The industrial revolution has changed the way dyes are made and sparked environmental concerns, which has led to a renewed interest in natural colors for food, cosmetics, and textiles. In dye-sensitized solar cells (DSSCs), the potential of chlorophyll extracts from water spinach (Ipomoea spp.) and spinach (Amaranthus tricolor) as long-lasting photosensitizers is investigated in this work. Amaranthus tricolor has a high total chlorophyll content of 10.367 mg/g, which is made up of 9.551 mg/g of chlorophyll and 0.818 mg/g of chlorophyll b, according to a chlorophyll content analysis. Significant amounts of chlorophyll were also present in Amaranthus hybridus, which had 10.462 mg/g (9.181 mg/g of chlorophyll and 1.283 mg/g of chlorophyll b). Ipomoea species, on the other hand, had a lower chlorophyll concentration (5.380 mg/g). Significant absorption peaks were found in the 380–460 nm range by acetone extraction and UV–Vis spectrophotometry, highlighting the significance of efficient light absorption for photosynthesis. Amaranthus tricolor is a very ideal plant for distributed solar power system applications due to its exceptional light energy conversion performance. But during storage, environmental stressors including senescence and light intensity caused chlorophyll to degrade, which shifted the absorbance maxima to shorter wavelengths and decreased the efficiency of light absorption. Amaranthus tricolor, in spite of this, continues to be a viable option for environmentally benign natural chlorophyll alternatives for industrial and renewable energy applications.
The Effect of Quartz Sand on Structural and Optical Properties of Dy3+ Doped P2O5-CaO-BaO-Gd2O3 Glasses Panggabean, Jonny H.; Br Sembiring, Novita Madalena; Simanullang, Elyzabeth; Rajagukguk, Juniastel; Sarumaha, C.S.; Kaewkhao, J.
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.136-144.2025

Abstract

This study investigates the influence of quartz sand incorporation on the structural and optical properties of Dy³⁺ doped P₂O₅–CaO–BaO–Gd₂O₃ phosphate glasses. The glass samples were synthesized using the conventional melt-quenching technique, with varying concentrations of quartz sand as a partial substitution of P₂O₅. Structural characterization was carried out using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, which confirmed the formation of an amorphous glass network and the presence of phosphate, silicate, and modifier-related vibrational bands. The optical absorption spectra, recorded via UV–Vis spectroscopy, revealed characteristic f–f transitions of Dy³⁺ ions, indicating their successful incorporation into the glass matrix. The intensity ratio of yellow to blue emission was found to be influenced by the quartz sand content, suggesting a significant role of SiO₂ in modifying the local environment around Dy³⁺ ions. These results highlight the potential of quartz-sand-modified phosphate glasses as promising candidates for photonic and luminescent device applications.

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