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Utama Alan Deta
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Jurnal Penelitian Fisika dan Aplikasinya (JPFA)
Published by Universitas Negeri Surabaya
ISSN : 20879946     EISSN : 24771775     DOI : https://doi.org/10.26740/jpfa
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) is available for free (open access) to all readers. The articles in JPFA include developments and researches in Physics Education, Classical Physics, and Modern Physics (theoretical studies, experiments, and its applications), including: Physics Education (Innovation of Physics Learning, Assessment and Evaluation in Physics, Media of Physics, Conception and Misconceptions in Physics, hysics Philosophy anPd Curriculum, and Psychology in Physics Education); Instrumentation Physics and Measurement (Sensor System, Control System, Biomedical Engineering, Nuclear Instrumentation); Materials Science (Synthesis and Characteristic Techniques, Advanced Materials, Low Temperature Physics, and Exotic Material); Theoretical and Computational Physics (High Energy Physics, Gravitation and Cosmology, Astrophysics, Nuclear and Particle Phenomenology, and Computational and Non-Linear Physics); and Earth Sciences (Geophysics and Astronomy).
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 440 Documents
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Laser-Induced Graphene Oxide on Polyimide Sheet: The Effect of Current Regulation on the Laser Power Stability Martila, Lenny Intan; Suryadi, Suryadi; Nursidik Yulianto; Yuliati Herbani; Isnaeni, Isnaeni; Supardi, Zainul Arifin Imam; Suaebah, Evi; Iyon Titok Sugiarto
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 1 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n1.p100-112

Abstract

Graphene oxide is a two-dimensional substance that shares the same structure as graphene and can be produced using several methods. The difficulty for green technology lies in developing a cost-effective and efficient method to produce graphene and graphene oxide without relying on chemical processes. A highly sustainable technology involves the use of a laser diode, which is both cost-effective and environmentally friendly. This technique produces a material known as laser-induced graphene/graphene oxide (LIG/LIGO). From a commercial standpoint, the laser diode is typically purchased without an electronic stabilizer component. Nevertheless, laser stability is crucial for the production process of LIG/LIGO. The objective of our study is to examine the impact of laser current management on the production of graphene on a polyimide (PI) sheet utilizing a 450 nm diode laser. The laser controller we utilize is the National Instruments (NI) PXIe-1085 device. The optical power of the laser diode was measured between 0.21 and 0.79 W. After the laser current was stabilized, the power slightly shifted, ranging from 0.18 to 0.86 W. Both experiments were conducted with a current range of 0.3 to 1 A. Before regulation, the laser diode experiences current fluctuations in the range of around 0.01 to 0.03 A. The study findings highlight the significance of laser current management in manufacturing LIG/LIGO by ensuring a consistent and precise laser power output, hence minimizing flaws in the final product. However, the analysis reveals that graphene oxide is the predominant yield in this characterization. This fact is caused by the presence of a graphene layer not exposed to the surface during measurement. This approach provides several benefits, such as the capacity to produce graphene/GO in a targeted, non-chemical, and fast manner, as well as its potential for diverse applications.
Integrating Digital Books, 3D Animations, and Online Problem-based Learning to Improve Pre-service Teachers’ Scientific Literacy in General Physics Course Sunarti, Titin; Satriawan, Muhammad; Prahani, Binar Kurnia; Rizki, Iqbal Ainur
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p169-183

Abstract

Some literature suggests that the low scientific literacy of pre-service teachers (PSTs) should be considered when designing teaching strategies. To address this issue, digital books with 3D animation, representing advanced developments in digital technology, can be integrated into an online Problem-Based Learning (PBL) model. Consequently, this study aimed to test the effectiveness of the Digital Books, 3D animation, and PBL (DBAPBL) model in enhancing the scientific literacy of PSTs. The research method employed was quantitative, utilizing a quasi-experimental design. The sample comprised 67 pre-service biology teachers enrolled in the General Physics course. Data collection technique utilised pre- and post-test along with survey in the last teaching session. Then, the data was analysed descriptively and statistically using t-test. The findings revealed that the DBAPBL model led to PSTs achieving a science literacy score above 89.5 or in the high category. Statistical test results also indicated a significant difference between scientific literacy's pre- and post-test results, affirming the model's effectiveness. Another noteworthy finding suggests that PSTs have a tendency to respond positively to the DBPAPBL model. This research implies a pedagogical innovation in physics education and advocates for updating curriculum guidelines related to the DBAPBL model, thereby contributing to the improvement of Indonesia's PISA scores.
In-depth Examination of Physicochemical Parameters of Borehole Water Samples in Borokiri, Niger Delta Tope, Ojo Odunayo; Adejimi, Adeoye James; Emeka, Okoli Austin; Josphe, Inyang Namdie
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p125-142

Abstract

This research provides an in-depth examination of the physicochemical parameters of borehole water samples in Borokiri Port Harcourt, with an emphasis on temperature, pH, conductivity, total dissolved solids (TDS), and heavy metal concentrations (lead, copper, zinc, and manganese). This research objective is to undertake a complete hydrogeochemical evaluation of groundwater quality in Borokiri, with an emphasis on determining the levels of various physicochemical parameters and heavy metal pollutants. The study included comprehensive field surveys, collecting primary data at borehole locations. Samples were gathered during the rainy season, analyzed in Borokiri's laboratory for physicochemical and microbial parameters using established international methods. Data analysis employed various geochemical techniques, ensuring a thorough assessment of groundwater characteristics and quality. The mean temperature, roughly 29.97°C, is surrounded by a tight clustering, with a modest temperature range of 6.30°C. The average pH of 8.04 shows excellent constancy, as seen by a low standard deviation and a limited range. Conductivity has a mean of 417.00 S/cm, showing significant dispersion with a wider range. The mean total dissolved solids of 199.00 mg/L demonstrate a wide range. Piper and Durov diagrams reveal ion dominance and interaction among samples, supporting judgements on water resource management. The calculated Water Quality Index (WQI) values represent the status of water quality, with most samples displaying "Good" quality and one indicating "Poor" quality due to increased parameter concentrations.
The Effect of Copper-Silver (Cu-Ag) Double Doping on ZnO Photoanode on Dye Sensitized Solar Cell (DSSC) Efficiency Berliani, Rhiska Aria; Haq, Fat Hana Rizqi; Ningrum, Eka Silvia; Lestari, Putri; Iriani, Yofentina; Nurosyid, Fahru
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p144-153

Abstract

A DSSC has a good performance seen from the ability of the photoanode to absorb sunlight. The use of photoanodes uses a semiconductor material, namely ZnO. However, in use, ZnO has the disadvantage of low optical and electrical properties, which results in low DSSC efficiency. So in this research, efforts are made to add Cu-Ag double doping to improve optical and electrical properties that will increase the efficiency of DSSC. ZnO/Cu-Ag photoanodes were prepared using the sol-gel spin coating method with doping variations of 0%, 1%, 2%, and 3%. Characterization was carried out using a UV-Vis spectrophotometer to see the absorption area and determine the band gap energy of the ZnO photoanode. I-V Keithley was used for current and voltage characterization to determine the conductivity of the ZnO photoanode and the efficiency of the DSSC. The results of the research show the effect of increasing the optical properties of ZnO photoanodes by decreasing the band gap energy along with the increase in doping concentration, namely 3.29 eV, 3.24 eV, 2.44 eV, and 2.40 eV. In addition, there is an increase in conductivity on the ZnO photoanode with the highest conductivity at doping concentration of 3% which is 0.1006 Ω-1m-1 with an increase of 6 times compared to the pure ZnO photoanode of 0.0163 Ω-1m-1. The improved optical and electrical properties of ZnO/Cu-Ag photoanodes have an impact on increasing the efficiency value of DSSC with the optimum efficiency achieved at 1% doping concentration of 0.0291% with an increase of 16 times compared to the use of pure ZnO photoanode of 0.00018%. The addition of Cu-Ag doping to ZnO improves the optical and electrical properties of the photoanode, enhancing DSSC efficiency with an optimum at 1% doping concentration.
Distribution of Geological Structures on Java Island Based on Derivative Analysis of Satellite Gravity Data Permana, Nanda Ridki; Fadrian, Dhika Faiz; Gunawan, Belista; Wulandari, Amara
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p154-168

Abstract

The island of Java is an interesting place to study geology because of the various tectonic processes that occur starting from volcanic activity, changes in relief, and the relative movement of faults. The aim of this research is to determine the distribution of geological structures spread throughout Java Island based on fault analysis from gravity satellite data. Gravity data was taken via the ICGEM website with a data resolution of 2 km so that 10,000 data were obtained consisting of gravitational disturbances (GD), geoid, and Digital Elevation Model (DEM). The data processing results represent weak zones on the residual anomaly map where fault movement occurs with low anomaly values, namely -55,147 – (-27,175) mGal which stretches from West Java to southern Madura. On the FHD map, it can be seen that the distribution of maximum gravity anomalies is quite numerous and complex with an anomaly value of 1117.18 mGal. It is suspected that the fault near the mountain occurred due to volcanic processes and the southern part occurred due to the shifting process of the Indo-Australian plate and the Eurasian plate. On the TDR map, the weak zones caused by faults spread across Java Island have low gravity anomaly values ranging from -1,353 – (-0.833) mGal. In the Banten to West Java area there are the Baribis Fault and the Cimandiri Fault. In the Central Java region there are the Ajibarang, Ungaran, Baribis Kendeng and Pati faults, as well as parts of the Special Region of Yogyakarta there is the Opak fault. Meanwhile, in the East Java area there are the Baribis Kendeng, Pasuran and Probolinggo faults.
Combination of SRME And WEMR Seismic Noise Demultiple With CRS Stack Method Zein, Emir Dzakwan Kamal; Rasimeng , Syamsurijal; Wijaksono, Egie
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p199-214

Abstract

Marine seismic data recordings consist of signals and various types of noise which can reduce the quality of the resulting data processing model. This research purpose to increase the signal to noise ratio of a 2D seismic cross-section using the demultiple and stacking methods. This research method applying the Common Reflection Surface (CRS) stack method with a combination of two seismic noise demultiple methods, namely Surface Related Multiple Elimination (SRME) and Wave Equation Multiple Rejection (WEMR) using ProMAX software. The CRS stack results has been proven to be able to eliminate random noise, increase amplitude, and clarify existing reflector patterns. The radon analysis feature can also assist the data quality control process related to the presence of multiple noise indications. The SRME and WEMR demultiple results can predict different multiple models so that later they can be subtracted from the main data. The multiple SRME prediction results is characterized by shape, size and wavelet pattern, whose overall trace appearance tends to be similar and not too complex. The multiple WEMR prediction results has characteristics of shape, size and wavelet pattern whose overall trace is almost similar and slightly more complex. The combination of the CRS, SRME, and WEMR stack methods is concluded to be able to reduce the presence of noise, so that the main reflector pattern is easier to identify as the actual subsurface layer. However, there are still indications of the existence of multiple residues that have not been completely reduced. Therefore, further research is needed, especially in combining the CRS stack, F-K filter, Radon filter, SRME, and WEMR methods.
Development of Bifocal Modeling Practicum to Harmonic Vibrations as Innovation in Physics Learning Sujito, Sujito; Pramono , Nugroho Adi; Sulur, Sulur; Wisodo , Hari; Kurniawan, Bakhrul Rizky
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 14 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v14n2.p184-198

Abstract

The era of Industry 5.0 requires physics education to adapt to technological advancements. Students often struggle to understand abstract concepts due to the limitations of tools and methods of learning that are less interactive. This research aims to develop a prototype for a harmonic vibration practical that integrates the Internet of Things (IoT), Augmented Reality (AR), and Virtual Reality (VR) into a single Bifocal Modelling device. This approach allows students to see the application of physics concepts in real-time, enriching their learning experience. The method used is Research and Development (R&D), which consists of Analysis, Design, Development, Implementation, Evaluation (ADDIE). The research results indicate that the use of this technology can enhance student engagement and help them understand the differences between the ideal model and real phenomena. Thus, students not only learn theory but also experience firsthand that makes learning more engaging. In addition, the integration of this technology equips students with the 21st-century skills needed in an increasingly complex job market. This research is expected to provide solutions to the challenges in physics teaching and pave the way for further research related to the application of technology. In this way, the integration of technology in physics education can prepare students to face the complexities of the modern workforce.
A Preliminary Study of Exhaled Breath Profiling of GERD-Asthma using an E-nose and Carbon Dioxide Concentration as Biomarkers Hadi, Kasnawi Al; Anggriani, Ni Ketut; Budianto, Arif; Nabilla, Dewi Alya; Farahin , Dewi Nor
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 15 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v15n1.p1-11

Abstract

Carbon dioxide plays a vital role in the human body. Many studies confirm that changes in carbon dioxide concentrations can serve as biomarkers for various health problems. This biomarker can be detected using several techniques, including an electronic nose (e-nose). However, there is a limitation in the e-nose's function and development in specific health cases, especially in respiratory or other systems. In line with this, this study aims to develop an economical, simple e-nose based on a CO2 (carbon dioxide) gas sensor and to establish an exhaled breath profile related to asthma and GERD (gastroesophageal reflux disease), which are common daily health problems. For this purpose, 90 exhaled breath samples from three different health conditions were obtained as the primary breath profiling samples: healthy, GERD, and asthma. The samples were measured and analyzed using a simple e-nose based on a high-sensitivity carbon dioxide sensor. The e-nose was calibrated and tested under laboratory-scale procedures, including linearity, accuracy, and sensitivity examinations. Then, the collected samples were classified, analyzed, and interpreted to produce a profile prediction for those health problems. The results show that the e-nose system can measure CO2 gas concentrations in the range of 400-9700 ppm. There are three selective profiles of the exhaled breath samples: healthy (450 to 899 ppm), GERD (3327 to 5381 ppm), and asthma (6612 to 9706 ppm). It can be concluded that the developed e-nose can classify different health conditions. There is a significant difference between healthy, GERD, and asthma samples (p < 0.05). These differences were interpreted as breath profiles with an accuracy level of 84%. This research may contribute to a preliminary investigation of breath profiles for specific health problems, with a rapid response time and high accuracy.
Utilization of Zn Powder as a Precursor in Synthesis of rGO/ZnO Composite for Decolorization of Batik Wastewater Wahyuni, Dwiria; Mariani, Mariani; Asri, Asifa; Arsyad, Ya Muhammad
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 15 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v15n1.p12-26

Abstract

Batik wastewater contains high concentrations of synthetic dyes, significantly contributing to aquatic pollution. Photocatalysis is a promising method for degrading such dyes in textile effluents. This study aims to develop rGO/ZnO composites using zinc (Zn) powder as a precursor for photocatalytic applications. Reduced graphene oxide (rGO) was used as a substrate for ZnO particle formation. The composites were prepared by reacting Zn powder with rGO at varying loadings (5% and 10% by mass) in a neutral aqueous solution, followed by thermal treatment at 250 °C for 1 hour to facilitate Zn oxidation. The photocatalytic performance was evaluated by applying different masses of rGO/ZnO (0.2, 0.4, and 0.8 g) to degrade batik wastewater. Surface morphology and elemental composition were characterized using SEM-EDS. SEM analysis showed that rGO has a sheet-like structure, while ZnO exhibits spherical morphology. EDS confirmed the presence of Zn, C, and O as major elements with Nb impurity was identified in the composite. The carbon-to-oxygen (C/O) ratio increased after composite formation, reaching 4.23 for rGO/ZnO 5% and 3.79 for rGO/ZnO 10%. XRD characterization of rGO/ZnO confirms the presence of ZnO in the composite, with residual Zn peaks indicating incomplete oxidation of the Zn precursor. Photocatalytic activities modeled using pseudo-first-order kinetics reveal the 10% rGO/ZnO composite (0.8 g) shows the degradation efficiency of 67.91%, with a rate constant of 0.1623 h⁻¹. The efficiency may be affected by the complex nature of batik wastewater, particularly wax and resin residues that hinder photocatalytic activity. In conclusion, these findings highlight the potential of Zn powder as a precursor in the synthesis of rGO/ZnO composites with concentration of rGO and the mass variation of rGO/ZnO in the treatment of Batik wastewater affect the photocatalytic activity.
Characterizing Groundwater Aquifers in Warasia, Ambon City Using Electrical Resistivity Tomography Data and Archie's Law Bahri, Samsul; Zulfiah; Sukri, Muh. Riswan Anas; Batlolona, Yohanis Toni; Hamzah, Wildan Nur
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 15 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v15n1.p27-39

Abstract

Identifying aquifer characteristics is vital for groundwater management, especially in volcanic terrains. This study employs Electrical Resistivity Tomography (ERT) combined with Archie's Law to delineate subsurface lithology and estimate aquifer porosity in Warasia, Ambon City. Field data were collected using a resistivity meter with two ERT profiles extending 120 meters each. The resistivity data were processed and modeled using RES2DINV, while water samples from wells were analyzed for physical parameters, including pH, conductivity, and total dissolved solids (TDS). The results reveal aquifers at depths of 3–5 meters, primarily hosted in volcanic tuff with resistivity values of 4.22–72.7 Ωm, indicating moderate to fair porosity (7.20%–14.01%). In contrast, lava formations exhibit significantly lower porosity (0.82%–1.02%) due to their solid structure. Archie's Law was instrumental in correlating resistivity with porosity, considering local lithological variability. The findings underscore the effectiveness of integrating ERT and Archie's Law for groundwater exploration in complex geological settings.

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