Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://journal.unesa.ac.id/index.php/jpfa <p style="margin: 1em 0px; color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><span style="text-decoration: underline;"><strong>INTRODUCTION</strong></span></p> <p>Jurnal Penelitian Fisika dan Aplikasinya (JPFA) - <em>Journal of Physics Research and Its Application</em> - is a peer-reviewed journal that is published by <a href="http://www.unesa.ac.id/" target="_blank" rel="noopener"><strong>Universitas Negeri Surabaya</strong></a> or t<em>he State University of Surabaya</em> <strong>in collaboration with </strong><a href="https://drive.google.com/file/d/1u_zzcjg8O0GpwqQpspS5TAnmHQqYYDfX/view?usp=sharing" target="_blank" rel="noopener"><strong>Perkumpulan Pendidik IPA Indonesia (PPII)</strong> </a>or <em>Indonesian Society for Science Educators</em> <strong>and </strong><a href="https://drive.google.com/file/d/1PaY3EHxM7v26b-l89wcijjkq4MK4N_6E/view?usp=sharing" target="_blank" rel="noopener"><strong>Physical Society Indonesia (PSI)</strong></a>. JPFA is published periodically (twice a year) in June and December.</p> <p>JPFA provides immediate open access to its content 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), <strong>with a particular emphasis on the Indonesian context and global perspective</strong>. More details about Focus and Scope, please check <a href="https://journal.unesa.ac.id/index.php/jpfa/focus">this link</a>.</p> <p>JPFA also carries a Comments and Criticism section, which provides a forum for expressing different viewpoints, comments, clarification, correction of misunderstanding, and reporting research misconduct regarding topics in published papers. Readers of the journal are earnestly invited to contribute their ideas to this forum. Contributions for the Comments and Criticism section should be relatively brief, normally one to four manuscript pages, written in Indonesian and English, and will be published as rapidly as possible.</p> <p style="margin: 1em 0px; color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;"><span style="text-decoration: underline;"><strong>JOURNAL INFORMATION</strong></span></p> <ol> <li class="show"><strong>Journal Title</strong><strong>:</strong> Jurnal Penelitian Fisika dan Aplikasinya (JPFA)</li> <li class="show"><strong>J</strong><strong>ournal Title (English):</strong> Journal of Physics Research and Its Application</li> <li class="show"><strong>Initials</strong><strong>:</strong> JPFA</li> <li class="show"><strong>Abbreviation</strong><strong>:</strong> J. Penelit. Fis. Apl.</li> <li class="show"><strong>Frequency</strong><strong>: </strong>2 issues per year</li> <li class="show"><strong>DO</strong><strong>I:</strong> <a href="https://doi.org/10.26740/jpfa">10.26740/jpfa</a></li> <li class="show"><strong>Print ISSN</strong><strong>:</strong> <a href="https://issn.brin.go.id/terbit/detail/1296205903" target="_blank" rel="noopener">2087-9946</a></li> <li class="show"><strong>Online ISSN</strong><strong>:</strong> <a href="https://issn.brin.go.id/terbit/detail/1445239330" target="_blank" rel="noopener">2477-1775</a></li> <li class="show"><strong>Editor in Chief:</strong> Prof. Dr. Budi Jatmiko, M.Pd.</li> <li class="show"><strong>Publisher</strong><strong>:</strong> <a href="http://www.unesa.ac.id/" target="_blank" rel="noopener"><strong>Universitas Negeri Surabaya</strong></a> or <em>the State University of Surabaya</em> <strong>in collaboration with <a href="https://drive.google.com/file/d/1_kz0Kd5lsmOESFHa3KvfUjgwVKcrzY5y/view" target="_blank" rel="noopener">Perkumpulan Pendidik IPA Indonesia (PPII)</a></strong> or <em>Indonesian Society for Science Educators</em> <strong>and <a href="https://drive.google.com/file/d/1AkymJGOlPCoxAt6Nr7muceVA0HTt9dun/view?usp=sharing" target="_blank" rel="noopener">Physical Society Indonesia (PSI)</a></strong></li> <li class="show"><strong>Status:</strong> Accredited nationally (<a href="https://sinta.kemdikbud.go.id/journals/detail?id=2074" target="_blank" rel="noopener">2nd Grade or SINTA 2</a>) and indexed internationally (<a href="https://journal.unesa.ac.id/index.php/jpfa/abstract" target="_blank" rel="noopener">DOAJ, Open AIRE, Google Scholar, etc</a>)</li> </ol> <p align="right"><a href="https://journal.unesa.ac.id/index.php/jpfa/ifaq" target="_blank" rel="noopener">More...</a></p> en-US <p>Author(s) who wish to publish with this journal should agree to the following terms:</p> <ol start="1"> <li>Author(s) retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by-nc/4.0">Creative Commons Attribution-Non Commercial 4.0 License</a> (CC BY-NC) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal for noncommercial purposes.</li> <li>Author(s) are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li> </ol> <p>The publisher publish and distribute the Article with the copyright notice to the JPFA with the article license CC-BY-NC 4.0.</p> utamadeta@unesa.ac.id (Utama Alan Deta) nuritalestari@unesa.ac.id (Nurita Apridiana Lestari) Sun, 31 Dec 2023 00:00:00 +0700 OJS http://blogs.law.harvard.edu/tech/rss 60 High Preferred Orientation on c-axis of ZnO:GO Crystal Film Synthesized Under Electric Field https://journal.unesa.ac.id/index.php/jpfa/article/view/27709 <p><em>ZnO nanostructures show a wide range of applications as active materials in optoelectronic devices. The unique structures in 1-dimensional (1D) in combination with other potential materials (such as graphene-based) can increase several device performances. This research aims to observe the influence of an additional electric field (induced by different voltages of ±1 kV) during the growing process of the zinc oxide (ZnO): graphene oxide (GO) crystal. The ZnO:GO layers were prepared via the self-assembly method in 2 steps; the first was seed layer preparation by dip coating technique using Zn (CH<sub>3</sub>COO)<sub>2</sub>.2H2O and 0.5 (wt%) of AlCl<sub>3</sub> as precursor and dopant, respectively. Secondly, growing ZnO rods using Zn (NO<sub>3</sub>)<sub>2</sub>·6H2O as precursor, 0.5 (wt%) GO (dispersed in water) as dopant materials, and hexamethylenetetramine (HMTA) as complexing agent. Applying an external field during self-assembly accelerated the ZnO hexagonal wurtzite crystal formation in a vertical growth direction, increasing the aspect ratio (L/d) of ZnO:GO rods. The direction of the applied external field affected the structure and morphology of the ZnO rods, which relates to ions and seed layer surface polarity during the synthesis process. The addition of an external field during the growing process induced the orderly alignment of ZnO rods, controlling growth perpendicular to the basal plane. This research has a significant scientific impact, elucidating the methods to control the 1D morphology of the ZnO growing process, which is closely related to the surface polarity properties of a material.</em></p> <p><em> </em></p> Annisa Nur Rahmawati, Nabilah Putri Utami, Lusi Safriani, Ayi Bahtiar, Wa Ode Sukmawati Arsyad, Euis Siti Nurazizah, Annisa Aprilia Copyright (c) 2023 Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://creativecommons.org/licenses/by-nc/4.0 https://journal.unesa.ac.id/index.php/jpfa/article/view/27709 Sat, 30 Dec 2023 00:00:00 +0700 Enhanced Performance of Solid Polymer Electrolyte Separator Lithium Battery with Cellulose Acetate From Empty Palm Fruit Bunch Coated Al2O3-Polyacrylic Acid https://journal.unesa.ac.id/index.php/jpfa/article/view/26884 <p><em>As lithium battery technology improves, it becomes more important to have solid polymer electrolyte dividers that work better.</em><em> The objective of this study is to enhance the efficiency of solid polymer electrolyte separators in lithium batteries. This research aims to expand the limits of innovation in hybrid separator development by utilizing empty palm fruit bunches (OPFEB) as a plentiful source of cellulose acetate. This approach enhances ion transfer by increasing the number of pores in the separator. However, there are challenges to achieving the desired levels of optimal ionic conductivity. In order to address these constraints, this study presents a novel </em><em>Al<sub>2</sub>O<sub>3</sub>-</em><em>PAA </em><em>inert ceramic oxide coating treatment that is applied to the separator by a spin coating technique. An electron microscope was utilized to observe the pore structure of the separator. Additionally, the separator underwent physical, mechanical, thermal, and cyclic voltammetry tests. The findings of this research indicate a significant increase in the physical properties, particularly the porosity and mechanical strength. The thermal shrinkage of the </em><em>Al<sub>2</sub>O<sub>3</sub>-PAA </em><em>coated separator is below 10% when exposed to a temperature of 140 <sup>o</sup>C for 30 minutes. The Cyclic Voltammetry test results demonstrate a pronounced loop curve, indicating an improvement in the ionic conductivity of the </em><em>Al<sub>2</sub>O<sub>3</sub>-</em><em>PAA </em><em>coated separator. The findings of this study provide a method to enhance the efficiency of separator </em><em>performance at high temperatures while maintaining safety and long battery life.</em></p> Delovita Ginting, Fitra Perdana, Romi Fadli Syahputra, Noor Maizura Ismail Copyright (c) 2023 Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://creativecommons.org/licenses/by-nc/4.0 https://journal.unesa.ac.id/index.php/jpfa/article/view/26884 Sat, 30 Dec 2023 00:00:00 +0700 Reconstruction of the Indian Ocean Tsunami in 2004 in Sabang Based on the Current Land Cover for Tsunami Evacuation Sites Recommendations https://journal.unesa.ac.id/index.php/jpfa/article/view/27128 <p><em>Sabang City has grown in term of city’s population as well as the tourism activity. The development also meant there are more area that has been used when compared to the time before the 2004 tsunami. This research was developed to re-identify tsunami-prone zones with the current land cover condition in Sabang City and to provide recommended safe locations, alternative evacuation routes, and additional evacuation sites. We used Cornell Multi-grid Coupled Tsunami Model (COMCOT) to carried out the tsunami simulation added with updated land cover to provide more accurate simulation model. The simulation pointed out several tsunami hazard zones in Sabang City, such as Balohan, Kuta Ateuh, and Iboih with expected tsunami heights to be more than 3 meters and arrival time less than 60 minutes. Those areas then surveyed to develop recommendations for tsunami risk reductions. The recommendations included nine additional evacuation buildings are proposed, three sites in each zone. Another recommendation is in form of evacuation routes in each zone to complement existing routes stated in RTRW document.</em></p> Abdi Jihad, Zaenal Al Atas, Vrieslend Haris Banyunegoro, Herdiyanti Resty Anugrahningrum, Rika Adenila Ginting, Kurniallah Perdana Putra, Andi Azhar Rusdin, Tommy Ardiyansyah, Tatok Yatimantoro Copyright (c) 2023 Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://creativecommons.org/licenses/by-nc/4.0 https://journal.unesa.ac.id/index.php/jpfa/article/view/27128 Sat, 30 Dec 2023 00:00:00 +0700 Altering Coconut Shell Biomass to High-Ordered Graphitic Carbon with Nickel Catalyzation https://journal.unesa.ac.id/index.php/jpfa/article/view/26668 <p><em>Graphite is a carbon-based material potentially utilized in numerous applications, such as electrodes for supercapacitors, lithium-ion batteries, and absorbers for water treatment. Biomass graphite is a beneficial candidate for low-cost yet valuable graphite. In this work, coconut shells, the abundant materials with high carbon contents, were successfully transformed into valuable coconut shell graphite (CSG) using metal catalytic graphitization with nickel as a catalyst at low-temperature conditions of ~1200 </em>°C<em>. Nickel concentration varied between 2 mmol, 3 mmol, and 5 mmol per gram of carbon. The samples were further examined using X-ray diffraction (XRD), Raman Spectroscopy, and Transmission Electron Microscope (TEM). The high graphitization degree of ~ 72 % was confirmed by X-ray diffraction analysis. That was further supported by the high-ordered stacking carbon layer that appeared in HR-TEM images. Meanwhile, Raman spectroscopy confirms that nickel impregnation diminished the structural defect of samples and increased the sp<sup>2</sup>-carbon bond indicated by its rise of IG/ID. The IG/ID values of CGS and CGS-Ni<sub>5mmol</sub> are 0.86 and 0.92, respectively.</em></p> Biaunik Niski Kumila, Farhan Adityaa, Fredina Destyofrini, Fitri Nur Indah Sari, Dhita Azzahra Pancorowati, Hamdan Hadi Kusuma Copyright (c) 2023 Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://creativecommons.org/licenses/by-nc/4.0 https://journal.unesa.ac.id/index.php/jpfa/article/view/26668 Sun, 31 Dec 2023 00:00:00 +0700 A-Site Doped in Perovskite La(1-x)Bax/2Srx/2Mn0.4Ti0.6O3 (x = 0, 0.1, and 0.3) for Absorbing Microwave Material https://journal.unesa.ac.id/index.php/jpfa/article/view/25999 <p><em>Microwave radiation can have harmful effects on our bodies. With increased exposure due to online activities, it is essential to use absorber materials like perovskite manganate to reduce radiation. In this study, perovskite manganate La<sub>(1-x)</sub>Ba<sub>x/2</sub>Sr<sub>x/2</sub>Mn<sub>0.4</sub>Ti<sub>0.6</sub>O<sub>3</sub> (x = 0, 0.1, and 0.3) was synthesized using the sol-gel method. X-ray diffraction (XRD) analysis revealed that the two samples were multi-phased, LaMnO<sub>3</sub> and La<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>, and were formed, exhibiting a rhombohedral crystal structure (R -3 c). Morphological characterization of the sample surface using a Scanning Electron Microscope (SEM) showed that as doping increases, the grain size decreases from 282.02 to 245.63 nm at x=0 and x=0.3, respectively. This result implies that doping leads to more uniform grain distribution and enhanced grain refinement. Characterization via Vibrating Sample Magnetometer (VSM) revealed that the maximum saturation value, 0.79 emu/g, was attained when x = 0. This sample exhibits soft magnetic properties, as evidenced by its coercivity (Hc) value of &lt; 1kOe. Results from the Vector Network Analyzer (VNA) indicate that the absorption capacity of La<sub>(1-x)</sub>Ba<sub>x/2</sub>Sr<sub>x/2</sub>Mn<sub>0.4</sub>Ti<sub>0.6</sub>O<sub>3</sub> increases, with a maximum reflection loss value of -25.5 dB with 1.5 mm thickness. Consequently, La<sub>(1-x)</sub>Ba<sub>x/2</sub>Sr<sub>x/2</sub>Mn<sub>0.4</sub>Ti<sub>0.6</sub>O<sub>3</sub> demonstrates potential as a microwave absorber material.</em></p> Sitti Ahmiatri Saptari, Dinda Hapitanur, Yana Taryana, Nanang Sudrajat, Ikhwan Nur Rahman, Dwi Nanto Copyright (c) 2023 Jurnal Penelitian Fisika dan Aplikasinya (JPFA) https://creativecommons.org/licenses/by-nc/4.0 https://journal.unesa.ac.id/index.php/jpfa/article/view/25999 Sat, 30 Dec 2023 00:00:00 +0700