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All Journal POSITRON Jurnal Fisika Unand Jurnal Pengabdian UntukMu NegeRI JOIV : International Journal on Informatics Visualization Emerging Science Journal Journal of Physics: Theories and Applications Jurnal Penelitian Pendidikan IPA (JPPIPA) Communications in Science and Technology Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika MONSU'ANI TANO Jurnal Pengabdian Masyarakat BERNAS: Jurnal Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Indonesian Journal of Community Empowerment and Service
Muldarisnur, Mulda
Department Of Physics, Faculty Of Mathematics And Natural Sciences, Andalas University
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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PENGAYAAN MATERI FISIKA : INDUKSI ELEKTROMAGNETIK DI SEKOLAH MENENGAH ATAS Ramacos Fardela; Zulfi Zulfi; Afdhal Muttaqin; Marzuki Marzuki; Dedi Mardiansyah; Mora Mora; Muldarisnur Muldarisnur; Harmadi Harmadi; Rahmad Rasyid; Dahyunir Dahlan; Elvaswer Elvaswer; Imam Taufiq; Wildian Wildian; Trengginas Eka Putra Sutantyo; Feriska Handayani Irka; Dwi Puryanti; Rani Delvihardini
MONSU'ANI TANO Jurnal Pengabdian Masyarakat Vol 6, No 2 (2023)
Publisher : Universitas Muhammadiyah Luwuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32529/tano.v6i2.2992

Abstract

The concept of electromagnetic induction is very important in understanding and developing modern electrical technology. Some factors cause students to often find it difficult to understand electromagnetic induction material in school is that this material involves abstract concepts such as magnetic flux, magnetic field changes, and emf. For some students, understanding these concepts may be difficult due to a lack of direct experience or concrete representations. Enrichment of physics material on electromagnetic induction has been implemented at SMA N 1 Gunung Talang. This service activity aims to improve students' understanding of the basic concepts of Electromagnetic Induction in Class XII. This service consists of three stages including: preparation, implementation and evaluation. The evaluation of this activity was carried out by comparing the pre-test results before enrichment and the post-test scores of students after being given enrichment material by the lecturer (service team). The results obtained show an increase in student knowledge towards understanding the concept of electromagnetic induction. This service activity can be an effort for school and university cooperation to support student success in understanding physics concepts that are considered complicated
Peningkatan Pembelajaran Fisika di SMAN 2 Gunung Talang Kabupaten Solok Melalui Kegiatan Pengabdian Masyarakat. Dedi Mardiansyah; Wildian Wildian; Afdhal Muttaqin; Muldarisnur Muldarisnur; Ramacos Fardela; Afdal Afdal; Ahmad Fauzi Pohan; Alimin Mahyudin; Nini Firmawati; Dian Milvita; Sri Oktamuliani; Rico Adrial; Dwi Puryanti; Sri Rahayu Alfitri Usna; Elistia Liza Namigo; Trengginas Eka Putra Sutantyo; Zulfi Zulfi
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v5i1.7489

Abstract

Hukum Newton merupakan prinsip dasar dinamika yang merinci hubungan antara gaya dan pengaruhnya terhadap gerak suatu benda tertentu. Konsep ini dirumuskan dalam tiga hukum yang dikenal sebagai Hukum Newton 1, Hukum Newton 2, dan Hukum Newton 3. Hukum Newton merupakan bagian dari mata Pelajaran Fisika. Mata Pelajaran fisika merupakan salah satu mata Pelajaran yang dianggap susah bagi sebahagian siswa-siswi, sehingga diperlukan kegiatan pengayaan agar ilmu fisika menjadi lebih mudah bagi siswa-siswi. Kegiatan pengabdian adalah memberikan pengayaan materi hukum Newton kepada kelas XI SMA N 2 Gunung Talang. Tujuan kegiatan ini memberikan tambahan ilmu terkait dengan materi hukum Newton. Metode yang dilakukan adalah persiapan pelaksanaan, pelaksanaan kegiatan, monitoring evaluasi, pembuatan laporan akhir dan pembuatan luaran pengabdian. Kegiatan ini merupakan bagian dari pengabdian Masyarakat mengenai pengayaan mata Pelajaran Fisika di SMA N 2 Gunung Talang yang dilaksanakan mulai dari bulan Oktober-November 2023. Dari hasil kegiatan ini dapat dilihat adanya peningkatan persentase penguasaan materi dari rata-rata 49,8% menjadi 79,8 %.
Peningkatan Pembelajaran Fisika di SMAN 2 Gunung Talang Kabupaten Solok Melalui Kegiatan Pengabdian Masyarakat. Dedi Mardiansyah; Wildian Wildian; Afdhal Muttaqin; Muldarisnur Muldarisnur; Ramacos Fardela; Afdal Afdal; Ahmad Fauzi Pohan; Alimin Mahyudin; Nini Firmawati; Dian Milvita; Sri Oktamuliani; Rico Adrial; Dwi Puryanti; Sri Rahayu Alfitri Usna; Elistia Liza Namigo; Trengginas Eka Putra Sutantyo; Zulfi Zulfi
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v5i1.7489

Abstract

Hukum Newton merupakan prinsip dasar dinamika yang merinci hubungan antara gaya dan pengaruhnya terhadap gerak suatu benda tertentu. Konsep ini dirumuskan dalam tiga hukum yang dikenal sebagai Hukum Newton 1, Hukum Newton 2, dan Hukum Newton 3. Hukum Newton merupakan bagian dari mata Pelajaran Fisika. Mata Pelajaran fisika merupakan salah satu mata Pelajaran yang dianggap susah bagi sebahagian siswa-siswi, sehingga diperlukan kegiatan pengayaan agar ilmu fisika menjadi lebih mudah bagi siswa-siswi. Kegiatan pengabdian adalah memberikan pengayaan materi hukum Newton kepada kelas XI SMA N 2 Gunung Talang. Tujuan kegiatan ini memberikan tambahan ilmu terkait dengan materi hukum Newton. Metode yang dilakukan adalah persiapan pelaksanaan, pelaksanaan kegiatan, monitoring evaluasi, pembuatan laporan akhir dan pembuatan luaran pengabdian. Kegiatan ini merupakan bagian dari pengabdian Masyarakat mengenai pengayaan mata Pelajaran Fisika di SMA N 2 Gunung Talang yang dilaksanakan mulai dari bulan Oktober-November 2023. Dari hasil kegiatan ini dapat dilihat adanya peningkatan persentase penguasaan materi dari rata-rata 49,8% menjadi 79,8 %.
Analisis Pengaruh Variasi Elektrolit H2SO4, KOH, dan Na2SO4 Terhadap Kinerja Elektrokimia Superkapasitor berbasis Biomassa Kulit Kakao Exaudi Pratama Rajagukguk; Widi Mulia Nasution; Mulda Muldarisnur; Yuli Yetri
Jurnal Fisika Unand Vol 13, No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.610-616.2024

Abstract

Utilization of cocoa pod waste (Theobroma cacao) as a supercapacitor carbon electrode through electrolyte optimisation was successfully conducted with 0.5M KOH chemical activator. Carbon production starts with slicing cocoa pods, sun drying, pre-carbonisation, crushing of carbon particles with mortar and ball milling, and particle size uniformity using a sieve. The obtained particle powder was chemically activated with 0.5M KOH, coin-molded into of carbon monolith and finished with integrated pyrolysis. Samples were subjected to one-stage integrated pyrolysis by carbonisation from room temperature to 600˚ C in an N2 gas environment, followed by physical activation to 700˚ C in a CO2 gas environment. Testing the electrochemical properties of carbon electrodes based on different types of electrolytes (H2SO4, KOH, and Na2SO4) IM using cyclic voltammetry (CV) and galvanostatic charge discharge (GCD) methods. The sample provided with H2SO4 electrolyte was confirmed to have the highest specific capacitance of 412.94 F/g at a current of 1 A/g. Based on the results of this study, it is confirmed that cocoa pods have the potential to be a source of electrode base material with H2SO4 electrolyte solution as a source of charge carrier in supercapacitor cell devices.
Light absorption enhancement in organic solar cell using non-concentric Ag:SiO2 core-shell nanoparticles Muldarisnur, Mulda; Fahendri, F.; Perdana, Ilham; Abdullah, Zulfi; Yusfi, Meqorry
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1076

Abstract

Low solar energy conversion efficiency prevents the widespread of organic solar cells; hence, metal nanoparticles have been used to overcome this problem without increasing cell thickness. We investigated light absorption enhancement in view of the embedment of Ag:SiO2 core-shell nanoparticles of different shell thicknesses, core offsets, offset orientation angles, and vertical mismatches between neighboring particles. The simulations were carried out using the finite element method. This is the first investigation in the use of asymmetric nanoparticles. At optimized conditions, absorption enhancement up to 345% compared to the one without the nanoparticles could be achieved. The enhancement was found much higher than that of the published values. The enhancement results were mainly from the increase of near-field localization and scattering in the active layer of solar cells due to the excitation of Fano resonances. The resonance occurred due to the non-symmetric nature of the core-shell nanoparticles.
Particle Size Improvement and Layer Absorption of Metil Halida MAPbI3 Perovskite Doping Phenethylammonium Iodide (PEAI) Anla, Anla Fet Hardi; Dahyunir, Dahyunir; muldarisnur, muldarisnur; Amrullah, Yasir; Sadikin, Siti Naqiyah; Ridwan, Jaenudin; Umar, Akrajas Ali
Jurnal Ilmu Fisika Vol 16 No 1 (2024): March 2024
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.16.1.13-21.2024

Abstract

This study aims to determine the effect of phenethylammonium iodide (PEAI) doping on grain size and absorption of the methylammonium lead iodide (MAPbI3) perovskite layer. The MAPbI3 perovskite layer is interesting to study because of its potential application in perovskite solar cells. In this study, the preparation of MAPbI3 perovskite layer with PEAI doping variation using a 2-step spin-coating method. The surface morphology of MAPbI3 shows an increase in grain size with the addition of PEAI doping variation. The optimum grain size is shown by adding 1.0 mg/ml PEAI doping variation, which is 117 ± 1.19 nm with a smooth surface morphology and tends to be homogeneous. X-ray diffraction (XRD) results on Perovskite MAPbI3 showed no difference in peaks with the addition of PEAI doping. However, there is only a slight angle shift of 2 theta, 0.05° at the main peak (110) and (220), so it will not change the cubic structure of MAPbI3 crystal. The ultra violet visible (UV-Vis) graph shows an increase in absorbance of Perovskite MAPbI3 with the addition of PEAI doping in the wavelength range of 400-550 nm. This research is expected to be a foundation for developing more efficient and stable solar cells.
Analisis Sifat Fisis dan Mekanik Biodegradable Foam Berbahan Dasar Selulosa Jerami Padi dan Polivinyl Alcohol Helmi Haiqal; Mulda Muldarisnur
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.621-627.2023

Abstract

Research has been carried out on analyzing the physical and mechanical properties of biodegradable foam made from rice straw cellulose with a polyvinyl alcohol binding matrix. This study aims to produce a substitute for styrofoam, which is considered not environmentally friendly and harmful to health. The composition of straw fiber and polyvinyl alcohol was varied by the mass ratio of the mixture of rice straw fiber and PVA (%) 40:20%, 30:30%, 20:40%, 50:10%, with the size of the fiber passing through the 80 mesh sieve. The results of the characterization using FT-IR showed that the highest content of functional groups was carbon (C), which corresponds to the content of conventional biofoam, which consists of the elements carbon (C) and hydrogen (H). The highest biofoam tensile strength value is in the comparison fraction (20:40%) of 18.11 MPa. The highest percentage of biofoam water absorption was obtained in the fraction ratio (50:10%) of 0.8928% in the treated sample and 1.1928% in the untreated sample. The percentage of biofoam water content closest to conventional biofoam water content is obtained at a fraction ratio (40:20%) of 0.78%. The highest degradation rate was obtained in samples with a comparative fraction (50:10%) of 0.04237%/day in treated and 0.06403%/day in untreated samples. The results of this study stated that the resulting biofoam did not contain harmful substances. After identifying the functional groups using the FT-IR test, the tensile strength of biofoam still did not meet the SNI 7188.7: 2016 bioplastic standard.
Sintesis Dan Karakterisasi Karbon Aktif Doping TiO2 Untuk Menurunkan Kadar Asam Lemak Bebas Pada Minyak Jelantah Cen Rahman; Mulda Muldarisnur
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.42-48.2024

Abstract

Research has been conducted on reducing the levels of free fatty acids in used cooking oil using activated carbon derived from teak sawdust doped with TiO2. The used cooking oil employed in this study underwent five frying cycles. The activated carbon was derived from teak sawdust and activated using a 10% ZnCl2 solution. The activated carbon was tested for moisture and ash content. The activated carbon was doped with TiO2 in various mass ratios, specifically 3:100, 6:100, 9:100, and 12:100, using solid-state synthesis at a temperature of 500 °C. The doped carbon was subjected to XRD analysis. The purified used cooking oil was tested for free fatty acid levels and clarity using UV-vis spectroscopy. The moisture content of the activated carbon was found to be 3.60%, while the ash content was 1.95%. XRD analysis revealed that the crystal size of the activated carbon was 38.9 nm, which decreased to 27.2 nm after TiO2 doping. Free fatty acid levels decreased from 1.18% to 0.29% in the free fatty acid content test. In the UV-vis measurement, the absorbance value for used cooking oil was higher at 4.5734, while purified oil had an absorbance value of 4.1985. The research results indicated that the best mass ratio of activated carbon to TiO2 was 9:100. The use of TiO2 doped activated carbon as an adsorbent effectively reduced the levels of free fatty acids in used cooking oil.
Peningkatan Aktivitas Fotokatalis Nanopartikel Seng Oksida Didoping Aluminium Untuk Mereduksi Merkuri Andini Ramadhani; Mulda Muldarisnur
Jurnal Fisika Unand Vol 13 No 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.2.197-203.2024

Abstract

Merkuri (Hg) merupakan salah satu limbah logam berat yang banyak ditemukan di lingkungan perairan. Upaya penanganan diperlukan untuk menurunkan kadar pencemaran merkuri ini. Pada penelitian ini digunakan fotokatalis nanopartikel ZnO didoping Al untuk mereduksi merkuri. Nanopartikel ZnO didoping dengan variasi % mol Al 0%, 3%, 5% dan 7% menggunakan metode sol-gel. Nanopartikel ZnO/Al dikarakterisasi menggunakan X-Ray Diffraction (XRD), Particle Size Analyzer (PSA), dan spektrofotometer UV-Vis. Berdasarkan hasil karakterisasi menggunakan XRD dan PSA, diperoleh ukuran kristal ZnO doping Al 0%, 3%, 5%, dan 7% berturut-turut sebesar 25,15 nm, 36,28 nm, 36,29 nm, 40,85 nm, dengan ukuran partikel 27,6 nm, 36,9 nm, 42,8 nm, 67,5 nm. Hasil uji spektrofotometer UV-Vis didapatkan band gap energy masing-masing sampel sebesar 3,22 eV, 3,13 eV, 3,1 eV, dan 3,02 eV. Aktivitas fotokatalisis nanopartikel diuji untuk mereduksi logam merkuri dengan variasi konsentrasi merkuri 0,5 mg/L, 1 mg/L, 1,5 mg/L dan 2 mg/L. Persen reduksi paling besar untuk setiap variasi larutan merkuri ditunjukkan oleh fotokatalis ZnO/Al 7%, dimana mampu mereduksi merkuri 0,5 mg/L, 1 mg/L, 1,5 mg/L dan 2 mg/L sebesar 94,12%, 93,68%, 93,18%, 92,76%.
Studi Pengaruh Ketebalan Elektroda Karbon Aktif dari Kulit Buah Kakao terhadap Kinerja Elektrokimia Superkapasitor Irsya Dunnas; Widi Mulia Nasution; Mulda Muldarisnur; Yuli Yetri
Jurnal Fisika Unand Vol 13 No 4 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.4.594-601.2024

Abstract

Sintesis karbon aktif dari kulit kakao dengan variasi ketebalan elektroda 0,4; 0,5; dan 0,6 mm bertujuan untuk melihat pengaruhnya terhadap kinerja superkapasitor. Tebal elektroda yang berbeda diberi kode sampel yaitu tebal 0,4 mm dengan kode CC-0,4; tebal 0,5 dengan kode CC-0,5 mm dan tebal 0,6 mm dengan kode CC-0,6. Pembuatan elektroda karbon dari kulit kakao dilakukan dalam beberapa tahap yaitu pengeringan organik, prakarbonasi, aktivasi kimia menggunakan aktivator KOH 0,4 M dan pencetakan pelet menggunakan press hidrolik dengan tekanan 8 ton. Pelet yang telah dicetak dikarbonasi menggunakan gas N2 pada suhu 600 ⁰C dan aktivasi fisika menggunakan gas CO2 pada suhu 700 °C. Sifat elektrokimia dari sel superkapasitor ditinjau melalui sistem dua elektroda dalam elektrolit 1 M KOH. elektroda karbon aktif optimum yang diperoleh pada sampel CC-0,5 dengan kapasitansi spesifik yang tinggi  mencapai 366,67 F/g pada rapat arus 1,0 A/g. Rapat energi maksimum yang didapatkan sebesar 660 Wh/Kg pada rapat daya optimum 2378,39 W/Kg. Potensi kulit kakao sebagai sumber karbon aktif dengan ketebalan 0,5 mm menunjukan kinerja perangkat penyimpanan energi elektrokimia superkapasitor yang tinggi dan stabil dengan ketahanan bahan yang baik.
Co-Authors Abi Syaibah Adine Melossa Famia Adrial, Rico Afdal Afdal Afdal Afdal Afdhal Muttaqin Afrineldi, Rendi Afza, Vikra Yudha Yolanda Ahmad Fauzi Pohan Akrajas Ali Umar Aldilla, Muhammad Syaugi Alimin Mahyudin Amrullah, Yasir Anak Agung Istri Sri Wiadnyani Andini Ramadhani Anggini, Aulia Anla, Anla Fet Hardi Apriani, Akmecia Risqa Ardhiati, Fitria Ardian Putra Astuti Astuti - Astuti Astuti Aulia Anggini Betta Centaury Cecep Irwanda Cen Rahman Dahyunir Dahlan Dahyunir, Dahyunir Damayanti, Elok Dedi Mardiansyah Dian Fitriyani Dian Milvita Disti Nabila Suci Dunnas, Irsya Dwi Pujiastuti Dwi Puryanti Ebriyen Zeni Eldiani Arifya Elistia Liza Namigo, Elistia Elvaswer Elvaswer Exaudi Pratama Rajagukguk Exaudi Pratama Rajagukguk F Marlow Fadilla Monica Fahendri Fahendri Fahendri, F. Famia, Adine Melossa Fani Anjelina Faula Rahmi Febrielviyanti, - Feriska Handayani Irka, Feriska Handayani Fitria Ardhiati Geby Sri Ayu Oktavia Gusthia, Melisa Weno Haiqal, Helmi Harmadi Harmadi Harmadi Harmadi Harmadi, - Helmi Haiqal Helmi Septaria Herlin Ilham Perdana Ilham Perdana Ilham Perdana AT Imam Taufiq Imam Taufiq Irsya Dunnas Irwanda, Cecep Kurniawan, Rengga Adit Lubis, Muhammad Siddiq Ilyas M. Ali Shafii Mahardhika, Muhammad Khaishar Margani, Taufik Try Marzuki Marzuki Marzuki Marzuki Maulidan, Ikhwan Fikri Meqorry Yusfi Mieke Wulandari Mora Mora Muftahul Rizka Muhammad Khaishar Mahardhika Muhammad Siddiq Ilyas Lubis Muhammad Syaugi Aldilla Mutya Vonnisa Nasution, Widi Mulia Nini Firmawati Nola Fridayanti Nola Fridayanti Nola Fridayanti, Nola Novia Dwi Agusri Novianti, Noni Novirza, Resti Nurmi, Fatiyah Aghni Yati Nurul Annisa Perdana AT, Ilham Rahma Fikri Nuradi Rahmad Rasyid Rahman, Cen Rahmatunisa, Sefina Rahmawati Yusri Rahmi Suryani Rahmi, Faula Rajagukguk, Exaudi Pratama Ramacos Fardela Ramadhani, Andini Ramona, Fransischa Rani Delvihardini Rendi Afrineldi Rengga Adit Kurniawan Resti Novirza Ridwan, Jaenudin Rifa Lihayati Rizchi Aulia Utami Rizka, Muftahul Sadikin, Siti Naqiyah Salamah, Ummi Salim Muhaimin Septriani, Yulni Solly Aryza Sri Handani Sri Oktamuliani SRI RAHAYU Sri Rahayu Suci, Disti Nabila Sucy Lestari Wirma Suryani, Rahmi Syaibah, Abi Syukri - Syukri Syukri Trengginas Eka Putra Sutantyo Ummi Salamah Usna, Sri Rahayu Alfitri Utami, Rizchi Aulia Vikra Yudha Yolanda Afza Wellia, Diana Vanda Widi Mulia Nasution Widi Mulia Nasution Wildian Wildian Wulandari, Mieke Yoci Darwita Putri Yuli Yetri Yuli Yetri Yulia Eka Putri, Yulia Eka Yulni Septriani Yusri, Rahmawati Zeni, Ebriyen Zulfi Zulfi Abdullah Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi