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All Journal PROSIDING SEMINAR NASIONAL Jurnal Materi dan Pembelajaran Fisika Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Ganendra: Majalah IPTEK Nuklir Jurnal Sains Materi Indonesia Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Indonesia PROSIDING : Seminar Nasional Fisika dan Pendidikan Fisika Jurnal Pendidikan Fisika FKIP UM Metro Gema Pendidikan Journal of Aceh Physics Society Edufisika: Jurnal Pendidikan Fisika Omega: Jurnal Fisika dan Pendidikan Fisika JITEK (Jurnal Ilmiah Teknosains) Jurnal Penelitian Pembelajaran Fisika Science and Technology Indonesia Jurnal Pertanian Terpadu Indonesian Journal of Science and Education Faktor Exacta Spektra: Jurnal Fisika dan Aplikasinya ORBITA: Jurnal Pendidikan dan Ilmu Fisika JPF : JURNAL PENDIDIKAN FISIKA Jurnal Kumparan Fisika Jurnal Sains dan Teknologi Indonesian Review of Physics (IRiP) International Journal of Educational Management and Innovation (IJEMI) Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Journal of Novel Engineering Science and Technology Jurnal Genesis Indonesia Jurnal Material dan Energi Indonesia Lontar Physics Today Jurnal Penelitian Pendidikan Indonesia JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Pengabdian Masyarakat Ilmu Pendidikan

Moh. Toifur

Ahmad Dahlan University

Author-ID : 404616

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Veterinary Other

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Effect of Deposition Voltage on Layer Thickness, Microstructure, Cu/Ni Sheet Resistivity of Deposition Results by Magnetic Field Electroplating Assisted Technique Wijanarka, Willi Anindita; Toifur, Moh
Indonesian Review of Physics (IRiP) Vol 3, No 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i1.1530

The purpose of this research is to make the Cu/Ni thin layer as an alternative to basic RTD materials through electroplating methods assisted by magnetic fields. Electroplating was carried out with variation in deposition voltage ranging from 1 to 5 V. The results of this study indicate that the deposition voltage applied to the coating affects the thickness, sheet resistivity, and microstructure of the coating. Thickness increases with increasing deposition voltage. The diffraction intensity and crystal size tend to increase with increasing deposition voltage. The distance between Bragg planes after the coating is almost equal for all samples. The highest sheet resistivity was obtained in the coating sample with a 4-volt deposition voltage.

Effect of the Magnetic Force on Ferrite Pendulum Oscillation Parameters: Parametric Analysis on Ferrite Pendulum Adi, Rusli; Toifur, Moh; Ishafit, Ishafit; Jaafar, Rosly
Indonesian Review of Physics (IRiP) Vol 3, No 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i1.1836

The magnitude of the damping force of the mathematical pendulum swinging on a medium is usually proportional to the speed of the pendulum. In this research, the pendulum oscillation parameters oscillating on an air medium under the influence of a magnetic field of 1.8 G will be investigated. In the initial stage, the effect of the magnetic force on the damping coefficient of ferrite pendulum oscillations with an initial deviation of 15 degrees observed. Furthermore, the study continued with varying the angle of deviation from 5 degrees to 25 degrees. The results of the data fitting amplitude (xi) at various swing times (ti) are using to analyze the effect of the angle of deviation on the maximum amplitude. The results showed that for the deviation angle of 15o the coefficient of damping of the medium affected by the magnetic force was 0,0022 greater than the coefficient of air damping 0,00006. It affects the amplitude, which decreases faster than the pendulum amplitude without the influence of magnetic force. Variation in the angle of deviation also affects the amplitude of the pendulum. In the deviation angle below 10, the pendulum motion is more influenced by the magnetic force, whereas in the deviation above 10, the pendulum motion is more dominated by gravity.

The Existence of Fourier Coefficients and Periodic Multiplicity Based on Initial Values and One-Dimensional Wave Limits Requirements Jufriansah, Adi; Khusnani, Azmi; Hermanto, Arief; Toifur, Mohammad; Prasetyo, Erwin
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol 10, No 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n2.p146-157

Physical systems in partial differential equations can be interpreted in a visual form using a wave simulation. In particular, the interpretation of the differential equations used is in the nonlinear hyperbolic model, but in its completion, there are some limitations to the stability requirements found. The aim of this study is to investigate the analytical and numerical analysis of a wave equation with a similar unit and fractal intervals using the Fourier coefficient. The method in this research is to use the analytical solution approach, the spectral method, and the finite difference method. The hyperbolic wave equation's analytical solution approach, illustrated in the Fourier analysis, uses a pulse triangle. The spectral method minimizes errors when there is the addition of the same sample grid points or the periodic domain's expansion with a trigonometric basis. Meanwhile, different ways offer a more efficient solution. Based on the research results, the information obtained is that the Fourier analysis illustrates the pulse triangle use to solve the solution. These results are also suitable for adding sample points to the same spectra. Fourier analysis requires a relatively long time to solve one pulse triangle graph to need another solution, namely the finite difference method. However, its use is still limited in terms of stability when faced with more complex problems.

FLIPPED CLASSROOM AND KAHOOT IN PHYSICS LEARNING: IMPROVING STUDENTSâ€™ MOTIVATION LEARNING Astuti, Irnin Agustina Dwi; Bhakti, Yoga Budi; Sumarni, Ria Asep; Sulisworo, Dwi; Toifur, Moh
International Journal of Educational Management and Innovation Vol 2, No 2 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/ijemi.v2i2.3491

Ideal condition in physics learning should combine concepts with technology. Traditional physics learning causes students to be not interested in learning physics. There must be innovations in physics learning to be more interactive learning. One of them flipped classroom learning. Flipped classroom learning combined with Kahoot online games will make students more active. The purpose of this research is to increase students' learning motivation with Kahoot-based flipped classroom learning. The method used in this research is the quasi-experimental method with the research design of The Randomized Post-Test Only Control Group Design. The research finding can describe as follows: First, the flipped classroom is learning the model that combines face-to-face with e-learning to improve students' motivation in physics learning. Second, Kahoot in a flipped classroom supported as an evaluation model. Third, three main steps in applying the flipped classroom are preparing,Â implementing, and evaluating the design.

Experimental Design in Constructing Low Temperature Sensor Based on Resistance Temperature Detector (RTD) Suwito Singgih; Moh Toifur; Suryandari Suryandari
Indonesian Journal of Science and Education (IJOSE) Vol 4, No 2 (2020): INDONESIAN JOURNAL OF SCIENCE AND EDUCATION
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v4i2.2758

Thin film copper-based RTD still has a low TCR. Hence, plating a Cu-based RTD with nickel will develop a higher TCR. TCR is the sensitivity of RTD’s value in response to temperature change. The experimental design in constructing Cu/Ni thin film by using the electroplating method with a concentration of solution and electrode spacing’s variation has been done. Electroplating is performed with a concentration of solution and electrode spacing’s variations. Electroplating processed by limiting DC voltage to 6 volts. Electrolyte solutions composition were NiSO4, Ni2Cl2, H3BO3 and aquades. Concentrations of solutions can be varied by changing NiSO4 and Ni2Cl2 masses. Based on these concentrations of solutes and electrode’s spacing, this research used 15 samples. Thickness, thin-film resistance, and temperature sensor test are performed to each sample. The purpose of thickness test is to measure nickel plates which were formed from the electroplating process. Thin-film resistance test performed to measure sample resistance changing to the electroplating process, and the temperature sensor test was performed to measures the sample’s sensitivity in responding to temperature changes. This research’s result shows the greater the concentrations of solutes used for copper electroplating, the thicker nickel plates will form. This condition makes its resistance’s value decreasing.Keywords: thin layer resistance, concentration of the solution, electrode distance, electroplating, thin layers of Cu / Ni, RTD, modules

Effect of Temperature of Electrolyte Solution On Cu/Ni Layer On Low-Temperature Voltage Range Measurement Performance Muhammad Ihsan; Moh. Toifur; Azmi Khusnani
Indonesian Journal of Science and Education (IJOSE) Vol 5, No 2 (2021): Indonesian Journal of Science and Education
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v5i2.3611

The electroplating method is considered an economical way in coating manufacture. However, this method is more widely used to treat chemical waste management and material properties engineering. The purpose of this research is to make a low-temperature sensor Cu/Ni film using an electroplating method assisted by an external magnetic field. The materials used are nickel (Ni) and copper (Cu), placed as anode and cathode. The electrolyte solution used is made from a mixture of H3BO3 (40 g/L), NiSO4 (260 g/L), and NiCl2 (60 g/L). The deposition process is carried out using an external magnetic field of 200 G and installed perpendicular to the deposition current, 120 s deposition time, and 3 Volt voltage. Preparation of Cu/Ni layer sensor samples is done by changing the electrolyte solution's temperature by varying the temperature between 30 ºC to 70 ºC with intervals of 10 ºC. The results of the research show that in testing the performance of the low-temperature sensor, each Cu/Ni layer sample has been able to offer its character as a low-temperature sensor. The character is indicated by changes in the output voltage's value following changes in the thermocouple value. Each sample at variations in the temperature of the electrolyte solution shows that the measured voltage range varies with the most extensive voltage range the sample has with deposition at 60 ºC.Keywords: Electrolyte Solution Temperature, Voltage Range, Cu/Ni layer, Low-Temperature Sensor, Electroplating.

SIMULASI DESAIN PERISAI RADIASI MBE-LATEKS MENGGUNAKAN MCNP5 Darsono .; Safirudin .; M. Toifur
GANENDRA Majalah IPTEK Nuklir Volume 16 Nomor 2 Juli 2013
Publisher : Website

Telah dilakukan simulasi desain perisai radiasi MBE lateks 300 keV/20 mA menggunakan program MCNP5. Simulasi dilakukan untuk memperoleh data verifikasi desain perisai radiasi MBE lateks secara analitik. Dalam simulasi menggunakan program MCNP5 dibutuhkan masukan yang tepat agar memberikan hasil yang diharapkan. Masukan itu berupa bentuk dan intensitas sumber radiasi sinar X yang digunakan, bentuk geometri perisai radiasi dan komponen MBE lateks di dalam perisai, dan jenis bahan perisai dan komponen MBE lateks yang digunakan. Masukan tersebut kemudian dimodelkan menggunakan program VISED. Dalam simulasi ini sumber radiasi sinar X dimodelkan berbentuk segi empat tipis berada ditengah-tengah jendela Ti yang memancarkan radiasi secara isotropik. Selain itu komponen MBE lateks di dalam perisai dipandang sebagai pengganggu pancaran sumber radiasi X. Pengamatan intensitas teratenuasi dideteksi menggunakan 5 detektor titik talli (Tally) F5 yang diletakkan searah tebal perisai radiasi. Pengamatan distribusi sinar X pada perisai dideteksi dengan meletakkan banyak detektor pada permukaan bagian luar perisai. Dari hasil simulasi dan analisis data, diperoleh nilai tebal perisai Pb yang aman untuk menahan paparan radiasi MBE lateks 300 keV/20 mA yaitu > 2,5 cm. Di samping data tebal perisai, pada simulasi ini juga diperoleh nilai laju dosis pada berbagai permukaan perisai. Besar nilai laju dosis pada permukaan perisai bidang XZ sebesar 2,58 mrem/jam, dan pada permukaan perisai bidang YZ sebesar 2,88 mrem/jam. Perbedaan laju dosis ini disebabkan oleh pengaruh letak komponen MBE yang berada di dalam perisai radiasi sinar X.

PENGARUH pH TERHADAP STRUKTUR MIKRO DAN SIFAT MAGNET BARIUM HEKSAFERIT. Didin S Winatapura; Deswitan Deswitan; M. Toifur; Ridwan Ridwan
Jurnal Sains Materi Indonesia Vol 14, No 3: APRIL 2013
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

PENGARUH pH TERHADAP STRUKTUR MIKRO DAN SIFAT MAGNET BARIUM HEKSAFERIT. Bahan magnet BaO.6Fe2O3 telah berhasil disintesis dengan metodeKo-presipitasi dari prekursor dengan pH = 9 dan pH = 12. Karakterisasi bahan dilakukan menggunakan X-Ray Diffractometer (XRD), Differential Thermal Analysis (DTA)/Thermal Gravimetric Analysis (TGA), Vibrating Sample Magnetometer (VSM), Scanning Electron Microscope (SEM) dan Transmission ElectronMicroscope (TEM). Hasil pengukuran sifat magnetik menggunakan VSM menunjukkan bahwa BaO.6Fe2O3 hasil sintering pada suhu 800o dari prekursor dengan pH = 12 mempunyai nilai koersivitas magnet tertinggi, Hci = 5,6 kOe. Koersivitas magnet ini disebabkan ukuran kristalit sangat halus mendekati domain tunggal. Hal ini didukung oleh hasil pengamatan SEM dan TEM yang menunjukkan bahwa ukuran partikel BaO.6Fe2O3 dari prekursor dengan pH = 12 sekitar 50 nmhingga 150 nm setelah melalui proses sintering pada suhu 800o. Dengan demikian bahan BaO.6Fe2O3 yang diperoleh dari percobaan ini dapat digolongkan sebagai magnet heksaferit berenergi tinggi yang berpotensi untuk dapat digunakan sebagai bahan komponen pembangkit energi.

NISBAH GMR SUPERKISI Ag/NiFe/Ag/NiFe Moh. Toifur; Prayoto Prayoto; Kamsul Abraha; Ridwan Ridwan
Jurnal Sains Materi Indonesia Vol 6, No 1: OKTOBER 2004
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

NISBAH GMR SUPERKISI Ag/NiFe/Ag/NiFe. Telah dibuat sistem multilapisan berstruktur Ag/NiFe/Ag/NiFe dengan mesin sputtering dc pada variasi waktu deposisi Ag(2) dari 2 menit sampai dengan 10 menit dengan tujuan untuk memperoleh multilapisan dengan nisbah GMR terbesar akibat sumbangan GMR yang berasal dari antiferromagnetic coupling antara spin-spin lapisan NiFe( 1) dan NiFe(2). Karakterisasi yang dilakukan meliputi keadaan morfologi lapisan, sifat magnetik dari bahan lapisan, strukturmikro serta resistansi dibawah pengaruh medan magnet luar (Hext). Hasil penelitian menunjukkan multilapisan dengan waktu deposisi Ag(2) = 8 menit memiliki nisbah GMR terbesar yaitu 67,74% atau 11,2 kali lebih besar dari efek MR lapisan tunggal NiFe dan telah mendekati perkiraan Pool bahwa efek GMR 4 lapis sekitar 75%. Lapisan ini memiliki remanen magnet (Mr) dan medan koersif(Hc) yang kecil. Sementara itu pemakaian lapisan penyangga Ag(ll1) semakin memperkokoh struktur atom paduan NiFe (lll) yang ditumbuhkan di atasnya.

PENENTUAN KEHALUSAN LAPISAN TIPIS Ni80Fe20 MELALUI NILAI KAPASITANSI LAPISAN PADA UNTAI TAPIS R-C LOLOS RENDAH Moh. Toifur; Venty Aghnani Nurhamidy; Sujatmoko Sujatmoko
Jurnal Sains Materi Indonesia Vol 7, No 1: OKTOBER 2005
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

PENENTUAN KEHALUSAN LAPISAN TIPIS Ni80Fe20 MELALUI NILAI KAPASITANSI LAPISAN PADA UNTAI TAPIS R-C LOLOS RENDAH. Telah dilakukan penelitian tentang watak kapasitif lapisan tipis Ni80Fe20 hasil deposisi dengan teknik sputtering pada variasi medan deposisi dari 0 G sampai dengan 600 G. Penelitian bertujuan untuk mengetahui tingkat kehalusan lapisan dengan menentukan nilai kapasitor dalam lapisan jika porositas dalam lapisan diperlakukan sebagai kapasitor, serta unjuk kerja lapisan sebagai tapis lolos rendah. Rangkaian terdiri dari tahanan R = 769,9 ohm yang dihubungkan secara seri dengan lapisan dan dipasok tegangan AC dari AFG. Pengamatan watak kapasitif dilakukan pada frekuensi 100 kHz sedangkan pengamatan frekuensi potong dilakukan pada frekuensi 100 kHz sampai dengan 1000 kHz. Tegangan output dan input diamati melalui osiloskop. Dari karakterisasi watak kapasitif menunjukkan bahwa semua lapisan menunjukan watak kapasitif. Sampel hasil deposisi pada Bdep = 300 G memiliki kapasitansi terkecil yaitu 0,09 pF, hal mana menunjukkan lapisan yang paling halus dibanding lapisan yang lain. Lapisan ini dapat menapis frekuensi hingga 253,5 Hz.

Co-Authors . Ridwan A, NURAMALIA Adi Jufriansah Adi, Rusli Agil, Mazani Azizan Aliyah Chaliq, Marhamatul Arief Hermanto Arief Hermanto Ayu Lusiyana, Ayu Azizah, Annisa Nur Azmi Khusnani Bayu Setiawan Carissa Viola Putri Alfian Choirul Huda Danurdara Setiamukti Darsono . Deswitan Deswitan Dian Artha Kusumaningtyas Didin S Winatapura Dwi Sulisworo Effilia Allun Jaladri Efi Kurniasari Eko Susanto Erwin Prasetyo Ety Dwiastuti Fardanti, Aribah Chika Fatkhur Rohman Fayakun Muchlis Fiqry, Rizalul Hajatulloh, Ridlo Halleyna Widyasari Hamzah Hamzah Haris Rosdianto Hindaresmi Hindaresmi Irfan Rosyadi Irnin Agustina Dwi Astuti Irnin Agustina Dwi Astuti Irnin Agustina Dwi Astuti, Irnin Agustina Dwi Ishafit Ishafit Ishafit Ishafit Ishafit Ishafit Islamiyati, Rizka Nuzul Jaafar, Rosly Jarot Suseno Jayati Jayati Kamsul Abraha Kamsul Abraha Leni Leni M Taufiqurrahman M. Safrudin M. Taufiqurrahman Matavani, Heru Miftahus Surur, Miftahus Moh. Irma Sukarelawan Muchairah Haji Hasan Muchlis, Fayakun Muhammad Faisal Muhammad Ihsan Ningrum, Rr. Sinta Kusuma Nisrina Karimah Nur Hamida Siregar NURAMALIA A Nurlailah O, OKIMUSTAVA Okimustava Okimustava Okimustava PRASETYO, ERWIN Prayoto Prayoto Putri, Siti Zahra Helmania Rahayu, Fatonah Rahayu, Natika Rahmatika, Zulfa ‘Amalia Ria Asep Sumarni Ria Asep Sumarni, Ria Asep Ridwan Ridwan Ridwan Ridwan Ridwan Ridwan Rismawan Rismawan Rismawan Rismawan Rizka Nuzul Islamiyati Rodika Utama Rosly Jaafar Rr. Sinta Kusuma Ningrum Rusli Adi Rusli Irwanto Safirudin . SATRIYAS ILYAS Saumarachmawati, Putri Ani Setiawan, Indra Budi Silvia Laeli Singgih, Suwito Siregar, Nur Hamida Sugiyanto Sugiyanto Sujatmoko Sujatmoko Sujatmoko Sujatmoko Sujatmoko Sujatmoko Suparwoto Suparwoto Suparwoto Suparwoto Supriyana Supriyana Suryandari Suryandari Thoha Firdaus Toni Kus Indratno Tono Wibowo Trisna Avi Listyaningrum Utama, Rodika Utami, Listiati Budi Venty Aghnani Nurhamidy Warnaningtyas, Murtiatmi Wijanarka, Willi Anindita Willi Anindita Wijanarka Wisnu Ari Adi Y. Pramudya, Y. Yahya Hanafi Yoga Budi Bhakti Yudhiakto Pramudya Yuli Hastiani Yuni Latifah Zahra, Siti Zahra Helmalia Putri

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