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JFA (Jurnal Fisika dan Aplikasinya)
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 1858036X     EISSN : 24604682     DOI : -
Core Subject : Science,
Physics
JFA (Jurnal Fisika dan Aplikasinya, Abbreviation: J.Fis. dan Apl.) hanya menerbitkan artikel penelitian asli serta mengulas artikel tentang topik seputar bidang fisika (fisika teori, material, optik, instrumentasi, geofisika) dan aplikasinya. Naskah yang dikirimkan ke JFA belum pernah diterbitkan ditempat lain serta tidak dalam proses pertimbangan untuk diterbitkan ditempat lain, dalam bahasa apapun. Studi teoritis, eksperimental, dan praktis sama-sama didorong, seperti juga artikel interdisipliner dan yang timbul dari penelitian dan kolaborasi industri.
Arjuna Subject : -
Articles 604 Documents
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Analysis of The Ina219 Sensor System And Voltage Divider On A Calibrate Multimeter: Fitri Puspasari, Trias Prima Satya Fitri Puspasari Fitri Puspasari; Trias Prima Satya Trias Prima Satya
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.2973

Abstract

Research has been carried out on uncertainty studies in current and voltage measurements based on the Internet of Things using the NodeMCU ESP8266 microcontroller. This research aims to design a current and voltage or power meter using a current sensor in the form of an INA219 module and a voltage sensor with a microcontroller-based voltage divider circuit module and determine the validity of the measuring results of the instrument created. The method used in this research consists of three stages: hardware design, software design and system testing.
Identification of Shoreline Shifts and Subsurface Layers Using Google Earth Pro with the Multichannel Analysis of Surface Wave (MASW) Method in the Abrasion-Prone Areas of Central Bengkulu to Seluma: Adinda Permata Putri, Refrizon Refrizon, Arif Ismul Hadi, Yuni Kharisma Sinaga, Shara Ashari Prana Jaya Adinda Permata Putri Adinda Permata Putri; Refrizon Refrizon; Arif Ismul Hadi Arif Ismul Hadi; Yuni Kharisma Sinaga Yuni Kharisma Sinaga; Shara Ashari Prana Jaya Shara Ashari Prana Jaya
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.21032

Abstract

Central Bengkulu to Seluma is mostly abraded and slightly accreted. Shoreline changes occur as a result of sediment movement, wave action, ocean currents, and human activities. This study aims to determine, analyze changes in the coastline from North Bengkulu to Seluma using Google Earth Pro and determine the value of rock stratigraphic layers using the Multichannel Analysis of Surface Wave (MASW) method. Field data collection was carried out using the Seismograph PASI 16S-24P seismic tool. The results of mapping and validation of primary data that has been inversed and then processed in surfer software, show that the beach with the largest abrasion value over a span of 16 years is Muara Dua beach in track 3, with a shoreline change of 6.7m / year. Then based on the value of Vs the coastal area of Central Bengkulu to Seluma is divided into 3 class sites, namely class D stiff soil, C very dense soil and soft rock and B medium rock.
Assessment of 3D-Printed Bolus for Post-Mastectomy Breast Cancer Radiation Therapy: Urifa Nabihal Aini, Hayfa Annisa, Diska Maharani, Aditya Prayugo Hariyanto, Agus Rubiyanto, Nasori Nasori, Aloysious Mario, Endarko Endarko Urifa Nabihal Aini Urifa Nabihal Aini; Hayfa Annisa Hayfa Annisa; Diska Maharani Diska Maharani; Aditya Prayugo Hariyanto Aditya Prayugo Hariyanto; Agus Rubiyanto Agus Rubiyanto; Nasori Nasori; Aloysious Mario Aloysious Mario; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.20671

Abstract

The fabricated 3D-printed bolus with 5 mm thick PLA and TPU materials was successfully used to analyze the air gap, relative electron density ( RED), and mass attenuation coefficient values for Post-Mastectomy Breast Cancer Radiation Therapy (PMRT). The 3D bolus was designed using 3D-Slicer Segment Editor software according to the thickness used, then smoothed and finished using Autodesk Meshmixer software, and printed on a 3D Creality printer. The air gap value was then analyzed by taking images from the phantom and 3D-printed bolus on a CT-Scan, then processed on Radiant DICOM, and the air gap value for the two 3D bolus materials was obtained. Analysis of two 3D bolus materials, PLA and TPU, showed that TPU is more suitable for bolus use in postmastectomy breast cancer cases based on its material properties. In addition, TPU is also better in terms of the air gap value because it has a smaller air gap, an RED value that is almost close to that of breast tissue, and better mass attenuation. Therefore, the recommended 3D-printed bolus material is TPU with a thickness of 5 mm as a tissue substitute for postmastectomy breast cancer cases.
Macrobending Multimode Plastic Optical Fiber Coated with PANI-PVA composite as a pH sensor: Ali Yunus Rohedi, Rizqi Nur Ainun, Iim Fatimah, Nurrisma Puspitasari, S Sudarsono, Gatut Yudoyono Ali Yunus Rohedi Ali Yunus Rohedi; Rizqi Nur Ainun Rizqi Nur Ainun; Iim Fatimah Iim Fatimah; Nurrisma Puspitasari Nurrisma Puspitasari; Sudarsono Sudarsono; Gatut Yudoyono Gatut Yudoyono
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.19026

Abstract

The pH measurement is essential in medicine, industry, and research, and each requires measuring instruments with different sensitivities. Measuring the pH of a solution, in principle, measures hydrogen ions in the solution. In this study, a pH sensor was designed and fabricated using macrobending multimode optical fiber. The optical fiber cladding was peeled off and replaced with a PANI-PVA (polyaniline-polyvinyl alcohol) composite layer, bent with a 2.0 and 2.5 cm diameter. The results showed that the pH sensor could measure the solution's pH linearly in the range of pH = 2 to 8.
Sensitivity of WRF-HAILCAST Model for Hailstone Detection in Central Lombok on 24 February 2019: Muhammad Ikko Safrilda Maulana, Aries Kristianto Muhammad Ikko Safrilda Maulana Muhammad Ikko Safrilda Maulana; Aries Kristianto Aries Kristianto
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.14010

Abstract

Hail is one type of extreme weather produced by Cumulonimbus clouds or convective clouds. Due to deep convection involve to physical processes and cloud dynamics, hail may occur in Indonesia. WRF-HAILCAST was used in this study to detect hailstone. The HAILCAST model is applied to WRF-ARW version 4.0 and above in WRF-HAILCAST. The purpose of this study was to determine the sensitivity of the WRF-HAILCAST model with a modified WSM6 microphysics scheme to detect hailstones that possible to reach the surface. The maximum reflectivity value, vertical reflectivity, maximum hailstone diameter, and cloud microphysics were all approximated properly as a result of this study. The estimation of maximum diameter hailstone was 1.6 cm at the time of hail occurred, and the graupel mixing ratio showed 2.2 g/kg which represented small hail could be detected in this model. However, WRF-HAILCAST tends to underestimate and has not been able to estimate the time of hail events according to weather radar properly.
Dye Sensitized Solar Cells with X% Cu-TiO2 Photoelectrode Sensitized from Syzygium malaccense: Nurul Fajriah, Elvan Yuniarti, Sitti Ahmiatri Saptari Nurul Fajriah Nurul Fajriah; Elvan Yuniarti Elvan Yuniarti; Sitti Ahmiatri Saptari Sitti Ahmiatri Saptari
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.16611

Abstract

Dye Sensitized Solar Cell preparation with x% Cu-TiO2 photoelectrode sensitized from Jamaica guava leaf dye (Syzygium malaccense) has been successfully made. This DSSC composed of x% Cu- TiO2 Photoelectrode synthesized by the doctor blading method with variation concentration Cu dopant at 0%, 1%, and 5%. Sensitizer (dye) made with technique maceration; electrolyte solution used an iodine solution, counter electrode with a carbon layer made from a candle flame; all the components are then arranged like a sandwich. The layers were characterized by X-ray diffraction to determine the phase, structure, and crystal size. X-ray diffraction characterization was carried out on all x% Cu-TiO2 layers. X-ray diffraction results show that has identified TiO2 anatase phase compound with a tetragonal crystal structure and has an average crystal size obtained from calculations using the Williamson Hall method for 0%, 1%, and 5% Cu doping fractions respectively are 60.28 nm, 43.32 nm, and 53.32 nm. UV-Vis's spectrophotometric characterization was carried out to determine the optical properties of the dye, and the results showed that Jamaica guava leaf dye has light absorption at a wavelength between 400-700 nm with a band gap energy of 1.728 eV. Furthermore, the current-voltage (IV) characterization was carried out to determine the efficiency of the solar cell. Based on the research results, the addition of Cu dopants as Photoelectrode can increase the efficiency of DSSC at a certain concentration. The highest efficiency achieved is 0.0036 % at 1% Cu doping concentration.
Optimization of Low-Dose Pediatric Chest CT Examination: Pediatric Phantom Study: Dafa Miftahuddin, Audiena Gelung Prayitno, Aditya Prayugo Hariyanto, Djuli Pontjowijono, Endarko Endarko Dafa Miftahuddin Dafa Miftahuddin; Audiena Gelung Prayitno Audiena Gelung Prayitno; Aditya Prayugo Hariyanto Aditya Prayugo Hariyanto; Djuli Pontjowijono Djuli Pontjowijono; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.19814

Abstract

This study uses a Pediatric Thoracic phantom developed in-house to optimize low-dose pediatric chest CT examinations based on organ-specific dose and image quality. Four low-dose protocols, low kV and low mA, reconstructed using Filtered Back Projection (FBP) and iterative reconstruction (IR) algorithms, were investigated. Lung, heart, and spinal cord doses were measured using calibrated Gafchromic LD-V1 Film. Evaluation of image spatial resolution and noise are considered. The CTDIvol results underestimate organ-specific doses. Low kV exposed an average dose of 29.55% less than low mA. No significant differences existed in the MTF curves of standard, low mA, or low kV doses. The peak NPS for low kV is significantly higher than for low mA. The combination of low kV and FBP produces images with better high spatial resolution. Meanwhile, combining low mA with an IR algorithm effectively reduces image noise so that low-contrast object detection improves.
Electrical Properties of Microporous Carbon from Biomass Wood; Tamarind, Mahogany, Teak, and Coconut Shell: M Mashuri, Cindy C Karim, A Fauziyah, S Suyatno Mashuri Mashuri; Cindy C. Karim Cindy C. Karim; A. Fauziyah A. Fauziyah; Suyatno Suyatno
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.20759

Abstract

Microporous carbon has been successfully synthesized from biomass, namely Tamarind Wood (Tamarindus Indica), Mahogany Wood (Swietenia Mahagoni), Teak Wood (Tectona Grandis), and Coconut Shell (Cocos Nucifera). Microporous carbon was synthesized using the carbonization method at 600°C for 45 minutes and washed using an ultrasonic cleaner for 6 hours. Next, the micro-porous carbon powder is dried in the sun and grinded mechanically. Microporous carbon powder was characterized by phase, average particles size, gap energy and electrical conductivity using XRD, PSA, UV-vis and LCR meters. The characterization results show that microporous carbon in the rGO (reduced graphene oxide) phase with a (002) reflection plane in an amorphous carbon graphite structure, the average particle size of Tamarind Wood (8.068 µm), Mahagony Wood (4.409 µm), Teak Wood (3.902 µm) and Coconut shell (3.653 µm). The gap energy measurement results show respectively 1.491 eV, 1.771 eV, 1.821 eV and 2.342 eV with an electrical conductivity value of 142.1×10-2 S/m, 1.281×10-2 S/m, 0.962×10-2 S/m, 0.771×10-2 S/m respectively Coconut shell, Teak Wood, Mahogany Wood, and Tamarind Wood. This microporous carbon-based wood biomass is semiconductors that have the potential as environmentally friendly energy storage supercapacitor materials.
Engineering of Organic Photodetector For Visible Light Detection By Vacuum Thermal Deposition Method: Chairadeya Chairadeya, Budi Sumanto, Richie Estrada, Sajal Biring, Shun-Wei Liu Chairadeya Chairadeya; Budi Sumanto Budi Sumanto; Richi Estrada Richi Estrada; Sajal Biring Sajal Biring; Shun-Wei Liu Shun-Wei Liu
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.17927

Abstract

This study aimed to determine the correlation between the photoactive layer thickness of an organic photodetector device and its performance. This research engineered organic photodetectors using zinc phthalocyanine (ZnPc) and fullerene (C60) as photoactive layers for detecting visible light using the vacuum thermal deposition method. Fabrication of organic photodetectors is done by varying the thickness of the photoactive layer at the same ratio. Of the four engineered organic photodetector variations, an active layer thickness of 90 nm produced the best organic photodetector performance. This photodetector has a dark current density of 1.43 × 10-6 A cm-2, a photocurrent density of 6.19 × 10-4 A cm-2, an external quantum efficiency (EQE) of 73.48% at a wavelength of 630 nm, with a responsivity of 0.39 A W-1 at a bias voltage of -3 V.
Design of an Optical Rotation Value Measurement Tool Using an Arduino Device: Muhammad, Beny Ragadita, and Soni Prayogi Muhammad Muhammad; Beny Ragadita Beny Ragadita; Soni Prayogi Soni Prayogi
Jurnal Fisika dan Aplikasinya Vol 19 No 3 (2023): October 2023 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Malus' law asserts that the square of the cosine of the angle formed between two polarizers is directly proportional to the intensity of light after passing through them. In this study, we demonstrate this law using a straightforward configuration. Our method of measuring the polarizer's rotational angle while keeping the other polarizer stationary is innovative. It involves manually attaching a multi-turn potentiometer to one of the polarizers. The Arduino board is connected to the potentiometer and light sensor that is used to detect the intensity of transmitted light, allowing for the measurement of light intensity as a function of rotational angle. Additionally, we think that the configuration as it is now can be helpful in physics laboratory classes. It can also be demonstrated by using it during lectures

Page 46 of 61 | Total Record : 604

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