Article Per Year (5 Year)
p-Index From 2021 - 2026
2.986
P-Index
This Author published in this journals
All Journal International Journal of Electrical and Computer Engineering International Journal of Renewable Energy Development Jurnal Sains dan Seni ITS Jurnal Sains dan Pendidikan Fisika IPTEK Journal of Science JFA (Jurnal Fisika dan Aplikasinya) PROSIDING SEMINAR KIMIA Indonesian Journal of Chemistry Jurnal Fisika Indonesia Inovasi Fisika Indonesia (IFI) Sewagati JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Gatut Yudoyono
Departemen Fisika Institut Teknologi Sepuluh Nopember
Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences Other

Published : 44 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 44 Documents
Search

 1   2   3   4   5 
Characterization of Zn-Doped MgTiO3 Powders Synthesized by Dissolved Metals Mixing Method Musyarofah, Musyarofah; Tanaka, Isao; Mohamed, Zakiah; Poo-arporn, Yingyot; Ernawati, Lusi; Yudoyono, Gatut; Prayitno, Budi
Indonesian Journal of Chemistry Vol 25, No 2 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.95879

Abstract

Zn-doped magnesium titanate powders with different Zn compositions, x = 0 to 1, were synthesized using the dissolved metals mixing method. The roles of calcination temperature and dopant Zn composition on powder morphology, phase composition, crystallite size, crystalline cell volume, and local environment were investigated through scanning electron microscope (SEM) observation, Rietveld analysis of powder X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and X-ray absorption spectroscopy (XAS) for Ti K-edge X-ray absorption near edge structures (XANES). We found that the geikielite solid solutions were formed during the pre-calcination at 400 °C for 1 h. Results show spherical particles (~1 µm) with minimal size variation across calcination temperatures (600–800 °C) and Zn compositions, though some agglomeration occurs. After calcination at 600 °C for 4 h, the crystalline cell volume of geikielite was proportional to the Zn composition, implying the formation of the solid solution in the range of Zn composition up to the level close to x = 1. This successful synthesis of the Zn-doped magnesium titanate nanocrystals at temperatures much lower than those required by the solid-state reaction method was thereby well demonstrated.
Pengenalan Media Pembelajaran Interaktif Untuk Meningkatkan Minat dan Kemampuan Siswa di SMAN 1 Mojosari Puspitasari, Nurrisma; Chalimah, Siti; Yudoyono, Gatut; Indrawati, Susilo; Prajitno, Gontjang; Bustomi, Muhammad Arief; Mashuri, Mashuri; Silvia, Linda; Yuwana, Lila; Rubiyanto, Agus
Sewagati Vol 9 No 3 (2025)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v9i3.2458

Abstract

Dalam dunia Pendidikan, media pembelajaran interaktif merupakan faktor penting yang perlu diperhatikan. Media ini dapat mengubah cara belajar dan meningkatkan pengalaman belajar yang menarik bagi siswa. Di Indonesia telah diterapkan pembelajaran interaktif baik online (e-learning) maupun offiine. Platform yang sering digunakan antara lain: google classroom, Whatsapp Group, dan Zoom. Namun saat ini telah diterapkan kembali pembelajaran secara tatap muka di Sekolah yang membuat siswa harus beradaptasi kembali dengan sistem pembelajaran lama. Hal tersebut menuntut guru untuk menyiapkan metode pembelajaran tatap muka yang tidak monoton dan guru dituntut handal dalam penguasaan teknologi dan dapat menampilkan pembelajaran yang interaktif untuk para siswa. Berdasarkan permasalahan tersebut perlu disadari bahwa guru memiliki peran yang sangat penting dalam suksesnya pembelajaran dan pendidikan. Pembelajaran interaktif adalah salah satu metode yang baik dan dapat dimanfaatkan untuk meningkatkan minat belajar dan kemampuan siswa terutama dalam mempelajari ilmu Fisika. Guru berperan sebagai pentransfer ilmu pengetahuan dengan memanfaatkan teknologi yang telah ada. Sehingga pengembangan diri untuk guru terkait pembelajaran interaktif dan inovatif ini perlu dilakukan dan dikenalkan pada siswa agar siswa dapat optimal dalam proses belajar. Oleh karena itu tim pengabdi dari Departemen Fisika ITS akan mengusulkan pelatihan dan pengenalan beberapa media pembelajaran interaktif (PhET Interactive Simulations dan pembuatan hologram sederhana) kepada guru dan atau siswa melalui program pengabdian kepada masyarakat di SMAN 1 MOJOSARI.
Rekonfigurasi Antena Folded Dipole Mikrostrip Berbasis Laser Merah dan Microwave Multifunctional Analyzer (MMA) Siregar, Aslam Chitami Priawan; Pramono, Yono Hadi; Yudoyono, Gatut; Tamimah, Ni’matut
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 2 (2025): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i2.4745

Abstract

With the increasing use of communication devices across various regions, antennas with stable signal performance are essential to ensure reliable information transmission. In this study, a microstrip folded-dipole antenna operating in the SHF band was developed using a reconfiguration mechanism based on a 650-nm red laser and metamaterial absorber (MMA). The initial antenna structure was designed and simulated in CST software with a target operating frequency of 9 GHz. Experimental results show that the antenna without a resonator exhibits an operating frequency of 13.77 GHz when the laser is off and 3.15 GHz when the laser is on. When integrated with the resonator, the operating frequencies shift closer to the simulation results, ranging from 15.75 GHz (laser off) to 7.02 GHz (laser on). The return-loss performance also improves with the implementation of the resonator. Without the resonator, the antenna achieves −33 dB return loss in laser-off mode and −34.15 dB in laser-on mode. With the resonator, the return loss values are −21.88 dB (laser off) and −26.61 dB (laser on). These findings indicate that the proposed configuration technique is applicable for outdoor Wi-Fi signal enhancement in the 5 GHz band and as a blind-spot sensing element for automotive radar systems.
ANALYSIS OF THE EFFECTIVENESS OF METAL COVER IN PREVENTING RADIATION LEAKAGE IN MICROWAVE-BASED GASIFICATION REACTOR Rahayu, Vira; Ratnasari, Tri; Rahmatullah, Muhammad Arif; Pramono, Yono Hadi; Yudoyono, Gatut
Inovasi Fisika Indonesia Vol. 14 No. 3 (2025): Vol 14 No 3
Publisher : Prodi Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v14n3.p404-411

Abstract

Abstract Microwave-assisted gasification, which converts biomass and plastic waste into syngas, has significant promise for the production of clean renewable energy. This technology has the potential to reduce reliance on fossil fuels and address waste management challenges. Operational safety, particularly with microwave leakage, is a significant issue due to stringent standards for microwave exposure. This study evaluates the effectiveness of several metallic materials as microwave shields in microwave gasification reactors. This study investigates the effectiveness of 2 mm thick metal sheets made of copper, aluminum, iron, and stainless steel in reducing microwave leakage at a frequency of 2.45 GHz. Experimental results indicated that copper and aluminum are particularly effective shields. Copper attained a remarkable leakage reduction of 99.53% (from 105.6 W/m2  to 0.5  W/m2) while aluminum reached a decrease of 97.35% (from 105.6 W/m2 to 2.8 W/m2). Efficient reflection and absorption of microwave energy are facilitated by the extremely low skin depth values of both materials, which is consistent with their high effectiveness. However, iron and stainless steel also demonstrated a strong capacity to reduce leakage, with an efficacy of 89.96% (reducing leakage to 10.6 W/m2 ) and 73.86% (reducing leakage to 27.6 W/m2). Still, their performance was influenced by more complex magnetic properties. These results indicate that copper and aluminum are ideal choices for primary microwave shielding applications in gasification reactors. Conversely, iron and stainless steel, while less efficient as primary shields, offer excellent mechanical strength and corrosion resistance, making them suitable for auxiliary structural components. Therefore, a hybrid design integrating a thin shielding layer of copper or aluminum onto these structural elements is proposed for optimal microwave containment. This study provides crucial insights for the design of safer and more efficient microwave gasification reactors, thereby supporting the development of responsible renewable energy technologies.
Co-Authors Agus Choirul Arifin Agus Rubiyanto Ainun, Rizqi Nur Ali Yunus Rohedi Anwaril Mubasiroh As, Nur Ichzan Aslam Chitami Priawan Siregar, Aslam Chitami Priawan Asnawi Asnawi Asrori, Muhamad Zainul Bachtera Indarto, Bachtera Bahtera Indarto Banatul Muflihati Bintoro Anang Subagyo Budi Prayitno Cahyono, Yoyok Clarisca Putri Rusydah Nabiilah D Darminto Dadan Hamdani, Dadan Darminto . Darminto Darminto Darminto Darminto Dwiputra, Adnan Wahyu Endarko Endarko Erna Wati Fachry Abda El Rahman Fahmi Astuti, Fahmi Faridawati Faridawati Fatimah, Iim Fatimah, Iim Gontjang Prajitno Gontjang Prayitno Hadi Santoso Hadi Santoso Hadi Santoso Harmadi Harmadi Heni Pujiastuti Hery Kurniawan Isa Albanna Joko Nugroho Lila Yuwana Linda Silvia, Linda Lucky Putri Rahayu M. Arief Bustomi Mashuri Mashuri Mefina Yulias Rofianingrum Mefina Yulias Rofianingrum Mohamed, Zakiah Mohammad Haekal Muhamad Zainuddin Muhammad Arif Bustomi Muhammad Noer Fajar Musyarofah Musyarofah, Musyarofah Muthmainnah, Melania Suweni Muntini Nabella Shabrina Nasori Nur AS Ichzan Nur Ichzan Aminuddin Siantang Nur Ichzan Aminuddin Siantang Nurma Sari Nurrisma Puspitasari Poo-arporn, Yingyot Prayogi, Soni Purwaningsih, Sriyani Puspitasari, Nurrisma Puspitasari, Nurrisma Rahayu, Vira Rahmatullah, Muhammad Arif Ratnasari, Tri Retno Fatma Megawati Rinaldi W Risqa Daniyati Rizqa Daniyati Rizqa Daniyati Rizqa Daniyati Rizqa Daniyati Rohedi, Ali Yunus S Sudarsono Saifuddin Samian Siti Chalimah Siti Rabiatul Adawiyah Suasmoro Sudarsono Sudarsono - Sudarsono Sudarsono Suhariningsih Suminar Pratapa Supadi Supadi Suryadi Suryadi Susilo Indrawati SUYATNO Suyatno Suyatno Suyatno Suyatno Suyatno Tamimah, Ni’matut Tanaka, Isao Taufik Hidayat Vicran Zharvan Vitriany Ekasari Wina Indra Lavina Yanurita Dwi Hapsari Yasin Agung Sahodo Yono Hadi Pramono Yuni Nur Hidayati Yuni Nur Hidayati