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All Journal Indonesian Journal of Geography Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains dan Teknologi Komunikasi Fisika Indonesia TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Journal of Aceh Physics Society Jurnal Litbang Industri JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Ilmiah Pertanian JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Pengabdian UntukMu NegeRI Journal of Research and Technology JURNAL PHOTON Indonesian Physical Review Science, Technology, and Communication Journal
Romi Fadli Syahputra
Department Of Physics, Faculty Of Mathematics, Natural Sciences & Health, Universitas Muhammadiyah Riau, Pekanbaru, Indonesia
Religion Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Social Sciences

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Karakterisasi toner elektrofotografi dari pigmen hitam karbon aktif cangkang kelapa sawit menggunakan metode emulsi agregasi (EA) berbahan styrene acrylic dan vynil pyrrolidone Piza Piza; Delovita Ginting; Romi Fadli Syahputra; Ayu Risti Candini; Leli Nurhamiyah
Jurnal Litbang Industri Vol 14, No 1 (2024)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v14i1.8278.25-34

Abstract

Toner adalah tinta bubuk yang terdiri dari polimer dan pewarna yang digunakan sebagai tinta dalam percetakan elektrofotografi. Penelitian ini bertujuan untuk mengkarakterisasi sifat-sifat toner elektrofotografi dari pigmen toner karbon aktif cangkang kelapa sawit menggunakan metode Aggregation Emulsion (EA) dengan penggunaan polimer Styrene Acrylic dan Vinyl Pyrrolidine. Toner yang dihasilkan diharapkan memiliki potensi sebagai alternatif yang berkelanjutan dan ramah lingkungan dalam aplikasi elektrofotografi. Komposisi pembuatan toner pada penelitian ini terdiri dari karbon aktif, bubuk besi dan styrene akrilik atau vynil pirrolidine. Varibael komposisi dalam proses pembuatan toner yaitu TB1 (14,7:1,8:2,4), TB2 (13,3:1,8:2,4), TB3 (14,7:1,8:2,4 ), TB4 (13,3:1,8:2,4).Penelitian ini meliputi serangkaian karakterisasi, termasuk analisis morfologi partikel, pengukuran distribusi ukuran partikel, uji citra dan uji coba cetak. Hasil penelitian ini mengungkapkan bahwa toner yang dihasilkan memiliki distribusi partikel sampel toner TB2 yang memperoleh ukuran rata-rata 6,759 µm. Uji cetak menunjukkan performa cetak yang baik pada toner TB2 dengan tingkat uji cetak gambar yang optimal dengan nilai RGB terkecil. Temuan ini mengindikasikan bahwa pigmen toner karbon hitam yang dihasilkan dari cangkang kelapa sawit melalui metode EA dengan penggunaan polimer Styrene Acrylic dan Vinyl Pyrrolidine memiliki potensi untuk digunakan dalam aplikasi elektrofotografi sebagai alternatif yang ramah lingkunganHasil penelitian ini mengungkapkan bahwa toner yang dihasilkan memiliki distribusi partikel sampel toner TB2 diperoleh ukuran rata-rata 6,759 µm. Uji cetak menunjukkan performa cetak yang baik pada toner TB2 dengan tingkat uji cetak gambar yang optimal dengan nilai RGB terkecil. Temuan ini mengindikasikan bahwa pigmen toner karbon hitam yang dihasilkan dari cangkang kelapa sawit melalui metode EA dengan penggunaan polimer Styrene Acrylic dan Vinyl Pyrrolidine memiliki potensi untuk digunakan dalam aplikasi elektrofotografi sebagai alternatif yang ramah lingkungan Hasil penelitian ini mengungkapkan bahwa toner yang dihasilkan memiliki distribusi partikel sampel toner TB2 diperoleh ukuran rata-rata 6,759 µm. Uji cetak menunjukkan performa cetak yang baik pada toner TB2 dengan tingkat uji cetak gambar yang optimal dengan nilai RGB terkecil. Temuan ini mengindikasikan bahwa pigmen toner karbon hitam yang dihasilkan dari cangkang kelapa sawit melalui metode EA dengan penggunaan polimer Styrene Acrylic dan Vinyl Pyrrolidine memiliki potensi untuk digunakan dalam aplikasi elektrofotografi sebagai alternatif yang ramah lingkungan
Fabrication of a lithium-ion battery separator from cellulose acetate of empty palm fruit bunches with the addition of PVDF Rismadani Haryanti; Romi Fadli Syahputra; Delovita Ginting
Indonesian Physics Communication Vol 21, No 2 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.2.115-120

Abstract

The separator is a crucial element in lithium-ion batteries that is positioned between the anode and cathode. Its primary function is to prevent direct contact between the electrodes, hence avoiding electrical short circuits. Lithium ion battery separators are typically composed of polyvinylidene fluoride (PVDF) and polyacrylonitrile (PAN) polymers, which possess excellent ionic conductivity and mechanical qualities. Nevertheless, these polymers and materials possess numerous drawbacks, necessitating adjustments for their further development. The objective of this study is to examine the impact of incorporating novel polymers into the constituents of the separator. The alteration utilises a novel polymer called cellulose, specifically the cellulose derivative known as cellulose acetate. The cellulose acetate utilised is derived from the empty fruit bunches of oil palm trees. Cellulose acetate offers several benefits, including affordability, the ability to selectively adsorb substances, solubility in a wide range of solvents (particularly organic solvents), hydrophilicity, and its origin from renewable sources. The separator was fabricated using the reflux process, which involved mixing 5.6 g of PVDF and 0.7 g of Al(OH)3 with varying amounts of CA (0.1 g, 0.2 g, and 0.3 g). The conducted tests include the thickness test, elongation test, and PSA test. According to the test results, the separator is viable and complies with the standards.
Enhanced Performance of Solid Polymer Electrolyte Separator Lithium Battery with Cellulose Acetate From Empty Palm Fruit Bunch Coated Al2O3-Polyacrylic Acid Ginting, Delovita; Perdana, Fitra; Syahputra, Romi Fadli; Ismail, Noor Maizura
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 13 No. 2 (2023)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v13n2.p160-173

Abstract

As lithium battery technology improves, it becomes more important to have solid polymer electrolyte dividers that work better. 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 Al2O3-PAA 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 Al2O3-PAA coated separator is below 10% when exposed to a temperature of 140 oC for 30 minutes. The Cyclic Voltammetry test results demonstrate a pronounced loop curve, indicating an improvement in the ionic conductivity of the Al2O3-PAA coated separator. The findings of this study provide a method to enhance the efficiency of  separator performance at high temperatures while maintaining safety and long battery life.
Aplikasi Karbon Aktif Cangkang Kelapa Sawit (Elaeis guineensis) sebagai Pigmen Toner Hitam pada Elektrofotografi dengan Polimer Stirena Akrilik-Vinil Pirrolidine Candini, Ayu Risti; Ginting, Delovita; Syahputra, Romi Fadli; Piza, Piza; Nurhamiyah, Leli
POSITRON Vol 14, No 1 (2024): Vol. 14 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i1.70064

Abstract

Toner merupakan campuran pigmen atau pewarna, serbuk logam, dan polimer. Tujuannya adalah menghasilkan toner elektrofotografi yang memanfaatkan cangkang kelapa sawit sebagai karbon aktif untuk zat pewarna dan melihat pengaruh komposisi bahan polimer stirena akrilik dan vynil pirrolidine yang digunakan untuk pembuatan toner. Metode pembuatan karbon aktif melibatkan aktivasi fisika dan kimia cangkang kelapa sawit, diikuti oleh penyesuaian ukuran partikel dan proses pirolisis. Proses pembuatan toner dengan metode agregasi emulsi kimia yang memiliki keunggulan, seperti menghasilkan ukuran partikel toner yang kecil, lebih sempit, dan efisiensi toner yang lebih tinggi. Analisis ukuran partikel (PSA) pada sampel karbon aktif menunjukkan bahwa ukuran partikelnya sudah berada dalam rentang mikropartikel yakni nilai rata-rata partikel diperoleh 2,1223 µm dan karakterisasi fisis meliputi kadar air, kadar zat menguap, kadar karbon terikat sudah memenuhi SNI 06-3730-1995. Hasil pengujian ukuran partikel sampel toner TE2 diperoleh nilai rata-rata partikel 22,0323 µm dan merupakan hasil cetak optimum dengan nilai red green blue rata-rata 30,6355 yang menandakan warna yang dihasilkan mendekati hitam. Hasil penelitian juga menunjukkan polimer vinil pirrolidine memiliki pengaruh optimum terhadap kualitas cetak dan ukuran partikel lebih kecil. Aplikasi karbon aktif cangkang kelapa sawit dalam elektrofotografi pada penelitian ini menawarkan solusi berkelanjutan dan inovatif untuk pengembangan toner hitam yang ramah lingkungan
Negative refractive index anomaly characteristics of SRR hexagonal array metamaterials Soerbakti, Yan; Gamal, Moh Danil Hendry; Zamri, Zamri; Defrianto, Defrianto; Syahputra, Romi Fadli
Science, Technology and Communication Journal Vol. 4 No. 2 (2024): SINTECHCOM Journal (February 2024)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i2.261

Abstract

Metamaterials possess distinct characteristics that make them very suitable for scientific investigation. This phenomenon's hallmark has left scientists perplexed and skeptical. Researchers have conducted numerous studies to explore the composition of one or more metamaterials. This project focused on the development of a linear-sequence metamaterial. Next, we examined the alterations in the optical characteristics of the metamaterial. The utilized frequency range is 0 to 9 GHz. We construct the hexagonal split ring resonance (SRR) metamaterial with a radius of 2.9 mm, consisting of one to four hexagonal SRRs. The findings revealed that the SRR hexagonal metamaterial structure had the highest negative refractive index value, reaching -9.33 in combinations of four hexagonal SRRs.
Pendampingan Penggunaan Simulasi Interaktif Phet Bagi Guru Ipa Sma Muhammadiyah 1 Di Kota Pekanbaru Sebagai Solusi Inovatif Pembelajaran Pada Masa Pandemi Fitri, Yulia; Novia Gesriantuti; Shabri Putra Wirman; Delovita Ginting; Neneng Fitrya; Sri Fitria Retnawaty; Elsie; Romi Fadli Syahputra; Israwati Harahap; -, Yeeri Badrun; Nopripa Herlina; Laras Sita Widara; Sri Mulyani; Viviana Lubis
Jurnal Pengabdian UntukMu NegeRI Vol. 8 No. 1 (2024): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v8i1.5626

Abstract

SMA Muhammadiyah 1 Pekanbaru merupakan salah satu institusi sekolah menengah atas yang dikelola oleh Majelis Pendidikan Dasar dan Menengah (Dikdasmen) Pimpinan Daerah Muhammadiyah kota Pekanbaru. Berdasarkan hasil wawancara dengan Kepala Sekolah dan Guru IPA SMA MUTU Pekanbaru tentang pembelajaran IPA ditemukan beberapa permasalahan diantaranya: belum ada media alternatif yang tepat, relevan dengan kompetensi dasar untuk mendukung pembelajaran IPA dan kemampuan guru dalam memanfaatkan teknologi multimedia dalam pembelajaran IPA masih kurang. Tujuan kegiatan Pengabdian di SMA MUTU Pekanbaru ini adalah PkM yang dilaksanakan berupa pendampingan mitra menggunakan simulasi interaktif PhET sebagai solusi inovatif pembelajaran pada masa pandemi secara luring dan daring. Pendampingan penggunaan simulasi interaktif PhET bagi guru IPA SMA Muhammadiyah 1 di kota Pekanbaru sebagai solusi inovatif pembelajaran pada masa pandemi berjalan lancar, memperoleh respons yang positif, mampu meningkatkan keterampilan dan rasa percaya diri guru. Selama pelatihan berlangung, guru-guru antusias, peserta berperan aktif selama workshop berlangsung, peserta berperan aktif selama pendampingan, peserta aktif bertanya mengenai materi yang di paparkan, peserta banyak meminta materi diluar modul yang di sediakan.. Beberapa indikator keberhasilan dalam pelatihan ini diantaranya meningkatnya pemahaman guru tentang simulasi interaktif PhET, mampu menggunakan simulasi interaktif PhET, peningkatan kualitas dan profesionalisme guru.
Physical characteristics of water paint with the addition of bintaro extract additives Syahputra, Romi Fadli; Wulandari, Surya; Ginting, Delovita
Indonesian Physics Communication Vol 21, No 3 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.3.275-280

Abstract

The addition of additives to paint aims to improve the quality and usability of paint. Natural additives, such as bintaro seed extract, have potential as anti-bacterial and anti-fungal agents. This study aims to investigate the physical properties of commercial paints added with bintaro seed extract. The physical properties tested were changes in density and adhesion. While the chemical content was characterized using HPLC and FTIR. The extraction process includes drying to grinding the bintaro seeds into powder, followed by extraction using a ratio of bintaro powder and 96% (m/v) ethanol 1:3. Bitaro extract obtained was added to commercial watercolors (100 ml) with variations of 5, 10 and 15 ml. The paint is applied to the surface of the multiplex wood evenly by pre-heating it at 40°C. The adhesion analysis was carried out using the help of ImageJ software to determine the ratio of the gray value of the image before and after the adhesion test using the cross-cut technique. It was observed that the increase in bintaro seed extract caused a decrease in paint adhesion.
Composite Modification of Water Hyacinth Fiber in the Production of Decorative Particle Boards by Spray-Coating Utilizing a Silane Coupling Agent Sasmita, Sasmita; Ginting, Delovita; Syahputra, Romi Fadli
Photon: Jurnal Sain dan Kesehatan Vol. 14 No. 2 (2024): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v15i1.6806

Abstract

Water hyacinth is a waste in waters that can damage the balance of aquatic ecosystems because of its rapid growth, which can reach 3% in a day. One utilization of water hyacinth waste is to be used as filler material for decorative particleboard. This study aims to look at the physical and mechanical characteristics of particleboard with surface coating treatment using silane coupling agent solution.. Water hyacinth fiber was selected as an alternative filler material for the particle board composite due to its abundant availability and potential fiber properties. The surface of the particle boards was modified using a silane coupling agent (KH550) to enhance the bond quality between components. The water hyacinth powder was first alkalized with NaOH and distilled water (1:5) for 1 hour, then mixed with epoxy resin in a 40:60 weight ratio. The compaction process was carried out using a hydraulic hot press at 2 bar pressure and 50°C temperature for 10 minutes. The resulting particle boards were tested for density, moisture content, water absorption, and thickness swelling. Flexural testing was conducted in accordance with ASTM D790-03, and tensile strength testing followed ASTM D638-14. Surface morphology was observed using a scanning electron microscope (SEM). The results showed that the application of a silane coupling agent improved the bond between the matrix and filler, and the produced particle boards met the quality standards for density, moisture content, water absorption, thickness swelling, flexural strength, and tensile strength.
Utilization of phase changing materials as air conditioning alternatives in eco-green systems Hikma, Nurfi; Fitri, Ade; Izzah, Ramy Fitrah; Syahputra, Romi Fadli; Zulkarnain, Zulkarnain
Science, Technology and Communication Journal Vol. 2 No. 3 (2022): SINTECHCOM Journal (June 2022)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v2i3.5

Abstract

Prevention of global warming due to high energy consumption and greenhouse gases is a priority for local governments, especially in Pekanbaru City, Indonesia. The use of air conditioning has become a community habit of reducing the temperature of a hot room, but unexpected things can have a negative impact on the surrounding environment. Therefore, this paper provides a simple new idea by using a phase change material (PCM) in the form of an eco-green air cooler system (EGACY) application as a free and passive cooler. EGACY consists of salt hydrates, PCM boxes, iron pipes, fans, solar panels, and batteries as the main components and several other supporting components. The EGACY system works by absorbing cold air and stored by the PCM at night through pipes connected to the outside, then expelled during the day through indoor ceiling vents. The resulting temperature in the room can be controlled at a comfortable temperature from 25°C to 28°C. EGACY is believed to be able to provide the potential for environmentally friendly technology with renewable energy sources.
Design and testing of circular metamaterial-based salinity sensors Rezki, Yona Purnama; Syahputra, Romi Fadli; Ginting, Delovita
Science, Technology and Communication Journal Vol. 3 No. 3 (2023): SINTECHCOM Journal (June 2023)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v3i3.234

Abstract

The salinity sensor is a salt level detection tool designed based on the electrical properties of water. The salinity sensor consists of two electrodes that are dipped in water where the sensor is given a potential difference so that electrons flow in the sensor-building circuit. The electrode is connected to a variable resistor which forms a voltage divider circuit connection. This research aims to design a metamaterial (MTM) sensor to detect salt levels in the 100 – 900 MHz range and investigate the performance of MTM sensors for detecting salt levels. The working MTM sensor design has been successfully designed and tested, where the MTM sensor is also able to differentiate frequency values from samples with different salt levels.
Co-Authors -, Yeeri Badrun Adila Fitri Yani Yani Ahmad Nurhuda Aisah, Nurul Andika Thoibah Andri Saputra Anggraini, Wresni Anggreani, Selvia Anita, Sofia Ariyani Ayu Risti Candini Basdyo, Doni Candini, Ayu Risti Dadang Syarif Sihabudin Sahid Dalimunthe, Latipa Hannum Dedi Irawan Dedi Irawan Defrianto Defrianto Delovita Ginting, Delovita Dino Yanuardi Doni Basdyo Elsie Erman Taer Fitra Perdana Fitri, Ade Haryana bin Mohd Hairi Haryana Hairi Haryana Hairi Hikma, Nurfi Husna, Ropiqotul Ismail, Noor Maizura Ismaliyah, Dhea ISRAWATI HARAHAP Iwantono Iwan Barnawi Izzah, Ramy Fitrah Khaikal Ramadhan Kusmawati, Intan Lailatul Munawaroh Laras Sita Widara Leli Nurhamiyah Lubis, Viviana Mesra Sania Moh Danil Hendry Gamal Mubarak Mubarak Neneng Fitrya Nopripa Herlina Novia Gesriantuti Nurhamiyah, Leli Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa Okfalisa, Okfalisa Piza Piza Piza, Piza Prastiwi, Adila Pramudiah Rachmawati Rachmawati Rezki, Yona Purnama Riad Syech Ridho Kurniawan Rifardi Rina Amelia Rismadani Haryanti Roby Ikhsan Ros Meri S. P. Dewi Saktioto Saktioto Sasmita Sasmita Shabri Putra Wirman Siti Hardiyanti Soerbakti, Yan Sri Fitria Retnawaty Sri Mulyani Syamsudhuha Syamsudhuha Tri Adelia Vepy Asyana Viviana Lubis Viviana Lubis Wahyu Candra Welly, Indah Sri wirdatul jannah Wresni Anggraini Wulandari, Surya Yan Soerbakti Yan Soerbakti Yan Soerbakti Yana, Debi Yani, Adila Fitri Yoli Zairmi Yulia Fitri Yunita I. Lubis Zairmi, Yoli Zamri, Zamri Zulkarnain Zulkarnain