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All Journal Reaktor Komunikasi Fisika Indonesia Journal of Aceh Physics Society Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Jurnal Fisika Indonesia Dinamika Lingkungan Indonesia Indonesian Journal of Physics (IJP) Aceh International Journal of Science and Technology Jurnal Material dan Energi Indonesia Science, Technology, and Communication Journal

Yanuar Hamzah

Jurusan Fisika FMIPA Universitas Riau, Pekanbaru, Indonesia

Author-ID : 2877727

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

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KARAKTERISASI DAN SIMULASI DIODA PN MEMPERGUNAKAN ALAT UJI OTOMATIS BERBASIS MIKROKONTROLER ATMEGA8A Oktavia, Dian Putri; Hamzah, Yanuar; Umar, Lazuardi
Komunikasi Fisika Indonesia Vol 13, No 12 (2016)
Publisher : Komunikasi Fisika Indonesia

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

An automated test platform for I-U curve diode characterisation based on microcontroller of Atmega8A is presented. Four types of diodes; 1N4007, 1N5401, 1N5392, and 1N4148 were characterized at temperature 303K using step voltage (dU) of 1mV, 5mV, 10mV, 20mV, 50mV, 100mV, and 500mv respectively. The temperature influences on diode was observed by putting diodes in adiabatic temperature chamber at three different temperatures of 313K, 323K, and 333K, the I-U curve of diodes are then measured. The results show an exponentially diodes I-U curve at quadrant I (forward bias region). For diode parameters, the I-U curve were then modeled and simulated after diodes equation and resulted an maximum absolute error 10.57% of full scale measurement

Analysis of the effect of annealing rate on the thinness film of BaZr0.4Ti 0.6O3 at 800°C for 2 hours Tengku Said Hussain Shahab; Yanuar Hamzah; Zulkarnain Krisman; Ari Sulistyo Rini; Rahmi Dewi
Journal of Aceh Physics Society Volume 10, Number 1, January 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i1.17819

Abstrak. Ferroelektrik merupakan bahan yang mempunyai polarisasi spontan serta mempunyai kemampuan mengubah polarisasi internalnya dengan menggunakan medan listrik yang sesuai. Ferroelektrik juga diaplikasikan sebagai kapasitor. Material ferroelektrik buat dalam bentuk film tipis. Barium Zirconium Titanate (BZT) dengan komposisi BaZr0.4Ti0.6O3 dibuat menggunakan metode sol-gel. Substrat yang digunakan yaitu FTO yang telah di etching dan di lapisi BZT serta di annealing pada suhu 800°C selama 2 jam dengan kenaikan laju suhu annealing yaitu 5°C dan 10°C. Sampel di karakterisasi menggunakan XRD. Hasil karakterisasi XRD menunjukkan adanya puncak-puncak yang menandakan terdapat struktur kristal. Struktur kristal yang dihasilkan berada pada bidang 100 pada sudut 2θ = 22.78°, bidang 110 pada sudut 2θ = 32.17°, bidang 111 pada sudut 2θ = 38.42°, bidang 200 pada sudut 2θ = 47.73°. Struktur yang dihasilkan pada penelitian ini yaitu tetragonal dimana a = b = 3.91 nm dan c = 4.05 nm. Laju kenaikan suhu berpengaruh pada puncak Difraksi Sinar-X. Nilai FWHM untuk 5°C lebih kecil dari 10°C, ini menunjukan adanya kerapatan yang lebih besar saat di annealing dengan laju 5°C. Nilai ukuran kristal yang di dapat dengan kenaikan suhu 5°C dan 10°C pada bidang 100 yaitu 3.94 nm dan 3.22 nm. Ukuran kristal berbanding terbalik dengan nilai FWHM dimana laju kenaikan suhu annealing yang kecil menyebabkan ukuran kristal membesar. Abstract Ferroelectrics is a material that has spontaneous polarization and ability to change its internal polarization by using a suitable electric field. Ferroelectricsis also applied as a capacitor. The ferroelectric material is made in the form of a thin film. Barium Zirconium Titanate (BZT) with the composition BaZr0.4Ti 0.6O3 is prepared using the sol-gel method. The substrate used is FTO which has been etched and coated with BZT and annealed at a temperature of 800°C for 2 hours with a increase in the annealing temperature speed of 5°C and 10°C.Samples are characterized using XRD. The XRD characterization results show peaks indicating a crystal structure. The resulting crystal structure is in a plane 100 at an angle of 2θ = 22.78°, a plane 110 at an angle of 2θ = 32.17°, a plane 111 at an angle of 2θ = 38.42°, a plane 200 at an angle of 2θ = 47.73°. The resulting structure in this study is a tetragonal where a = b = 3.91 nm and c = 4.05 nm. The speed at which temperature increases has an effect on the peak of the X-Ray Diffraction.The FWHM value for 5°C is less than 10°C which indicates a greater density when annealed at a speed of 5 °C. The value of the crystal size obtained with an increase in temperature of 5°C and 10°C in the plane 100 is 3.94 nm and 3.22 nm. The crystal size is inversely proportional to the FWHM value where the small speed of the annealing temperature increase causes the crystal size to enlarge.Keywords: BaZr0.4Ti0.6O3 Thin Film, Speed of Annealing Temperature Increase, Sol-gel method, X-Ray Diffraction (XRD).

Biosynthesis of ZnO Micro-Nanoflower with Ananas comosus Peel Extract Maya Sari; Yolanda Rati; Tetty Marta Linda; Yanuar Hamzah; Ari Sulistyo Rini
Journal of Aceh Physics Society Volume 10, Number 4, October 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i4.18951

Abstrak. Dalam rangka mengurangi pemakaian bahan kimia berbahaya, kini telah mulai dikembangkan penggunaan bahan alami pada proses pembentukan nanopartikel. Pada penelitian ini, biosintesis nanopartikel ZnO dilakukan menggunakan ekstrak kulit Ananas comosus sebagai agen capping sekaligus agen pereduksi. Seng nitrat digunakan sebagai prekursor dari ion seng, sedangkan kulit nanas dibuat menjadi ekstrak untuk dimanfaatkan kandungan antioksidannya. Sampel ZnO dipelajari sifat fisisnya dari hasil karakterisasi X-ray diffraction (XRD), scanning electron microscopy (SEM) dan spektroskopi UV-Vis. Berdasarkan pola XRD, nanopartikel ZnO memberikan fasa kristal heksagonal wurtzite dengan ukuran kristal 14 nm. Morfologi SEM masing-masing sampel didapatkan berbentuk bunga atau micro-nanoflower dengan ukuran diameter rata-rata 510 nm dan 560 nm untuk sampel 0,01 M dan 0,025 M. Hasil spektrum absorbansi UV-Vis menunjukkan peningkatan puncak penyerapan cahaya dengan penambahan konsentrasi seng nitrat. Berdasarkan informasi sifat fisis ini, sampel ZnO berpotensi diaplikasikan sebagai material fotokatalis.Abstract. In order to reduce the use of hazardous chemicals, the use of natural ingredients has now been developed in the process of forming nanoparticles. In this study, biosynthesis of ZnO nanoparticles was carried out using Ananas comosus peel extract as capping agent and reducing agent. Zinc nitrate was used as a precursor to zinc ion. The physical properties of ZnO samples were studied from the characterization result of scanning electron microscopy (SEM), UV-Vis spectroscopy, and X-ray diffraction (XRD). The SEM morphology of each different sample was obtained in the form of micro-nanoflower with an average diameter of 510 nm and 560 nm for 0.01 M and 0.025 M samples, respectively. The UV-Vis absorbance spectrum results showed an increase in the light absorption peak as zinc nitrate concentration increased. According to the XRD pattern, the ZnO nanoparticles possessed an hexagonal wurtzite crystal phase with a crystal size of 14 nm. Based on this information on physical properties, the ZnO sample has the potential to be applied as a photocatalyst material.

Analysis of Activated Carbon Monolith Derived from Carrot Juice Waste for Supercapacitor Electrode Application Dewi Ramayani; Yanuar Hamzah; Erman Taer; Novi Yanti; Afriwandi Apriwandi
Journal of Aceh Physics Society Volume 10, Number 2, April 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i2.18392

Abstrak. Pengembangan sistem penyimpanan energi elektrokimia yang efektif dan efisien menjadi sangat penting pada era evolusi teknologi dan industri modern saat ini. Penelitian ini mengemukakan karbon aktif sebagai bahan dasar material elektroda untuk diaplikasikan pada piranti penyimpan energi, khsusunya superkapasitor melalui analisa densitas, X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) dan Cyclic Voltammetry (CV). Karbon aktif berbentuk monolit disiapkan dari ampas jus wortel melalui pendekatan pirolisis satu tahap terintegrasi dan aktivasi kimia KOH. Proses pirolisis satu tahap terintegrasi dilakukan melalui penggabungan karbonisasi dan aktivasi fisika dalam atmosfer gas N2/CO2. Berdasarkan analisis data, karbon aktif menunjukkan sifat amorf yang normal dan sifat porositas terkonfirmasi. Lebih lanjut, sifat elekrokimia dievaluasi menggunakan metode Cyclic Voltammetry (CV) pada sistem dua elektroda. Kapasitansi spesifik yang dihasilkan sebesar 155 F/g dalam elektrolit 1 M H2SO4 dengan energi spesifik dan daya spesifik adalah 21,52 Wh/kg dan 77,57 W/kg. Berdasarkan analisa ini maka ampas jus wortel terkonfirmasi berpotensi sebagai karbon aktif untuk elektroda yang diaplikasikan dalam piranti penyimpan energi superkapasitor.Abstract. The development of an effective and efficient electrochemical energy storage system is very important in today's era of technological evolution and the modern industry. This research suggests that activated carbon is the raw material for electrode materials to be applied to energy storage devices, especially supercapacitors through density analysis, X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), and Cyclic Voltammetry (CV). Activated carbon in the monolith form derived from carrot juice waste was prepared through a one-stage integrated pyrolysis approach and chemical activation of KOH. An integrated one-stage pyrolysis process was carried out by combining carbonization and physical activation in an N2/CO2 gas atmosphere. Based on data analysis, activated carbon performed normal amorphous behavior with confirmed porosity features. Furthermore, the electrochemical properties were evaluated using the Cyclic Voltammetry (CV) method at the two-electrode system. The specific capacitance was found as high as 155 F/g in the 1 M H2SO4 aqueous electrolyte with specific energy and specific power as high as 21.52 Wh/kg and 77.57 W/kg, respectively. Based on this analysis, the carrot juice waste has been confirmed to have the potential as activated carbon for the electrodes applied in supercapacitor energy storage technology.Keywords: Carrot Juice Waste, Activated Carbon, Electrode Materials, Supercapacitor

Growth Mechanism and Characterization of PbTe0.5Se0.5 Thin Films Used by Closed-Space Vapor Transport in a Vertical Reactor Yanuar Hamzah; Jimmy Copriady; Ariswan Ariswan
Reaktor Volume 19 No. 1 March 2019
Publisher : Dept. of Chemical Engineering, Diponegoro University

A simple method for growing thin film of semiconductor material PbTe0.5Se0.50 has been designed using the vapor transport (CSVT) method in a vertical reactor. The objectivity of this method is to study thin film growth formation due to chemical reactions during the deposition process in the reactor. In this study will describe some formations the vapor transport mechanism of PbTe0.5Se0.50 semiconductor material using iodine gas (I2) to accelerate the etching reaction on the substrate surface. Next, we will describe how the mechanism of the reaction in the reactor zone for growing thin films on the substrate. The thin films were characterized by structural, morphology properties and its composition. The film structure is a cubic structure with the maximum diffraction intensity at peak (222). The surface morphology of the thin film has a microcubes shape with a grain size~10 to 20 mm. Keywords: etching reaction; micro-cube; PbTe0.5Se0.50; close-spaced vapor transport

ANALISA SIFAT NUTRISI TANAH PERKEBUNAN YANG DIBERI PUPUK UREA (CO(NH2)2) MENGGUNAKAN SENSOR NUTRISI TANAH Yanuar Hamzah; Lazuardi Umar; Susi '
Komunikasi Fisika Indonesia Vol 12, No 11 (2015)
Publisher : Universitas Riau

Telah dilakukan penelitian untuk menganalisa sifat nutrisi tanah perkebunan kelapa sawit yang diberi pupuk urea CO(NH2)2 menggunakan sensor nutrisi tanah modifikasi Wenner. Konsentrasi nutrisi tanah disimulasikan dengan memvariasikan jumlah massa pupuk, dimana massa pupuk yang digunakan adalah 5, 10, dan 15 gram. Kemudian dilakukan pengukuran untuk melihat pergeseran frekuensi dan amplitudo. Hasil yang diperoleh menunjukkan bahwa terjadi pergeseran frekuensi ¨I kHz dari masing – masing massa pupuk 5 gram ,10 gram dan 15 gram. Perbedaan frekuensi tidak cukup signifikan jika dibanding dengan perubahan amplitudo pada kurva (U0) untuk masingmasing massa pupuk urea. Dengan menggunakan persamaan model matematis dapat ditentukan puncak dari grafik tersebut. Daerah puncak untuk massa urea 5 gram yaitu 5.5 MHz, massa urea 10 dan 15 gram pada 5.45 MHz.

PENENTUAN SIFAT MAGNETIK PASIR DAN DEBU SEPANJANG JALAN KARTAMA KOTA PEKANBARU MENGGUNAKAN MAGNETIC PROBE PASCO PS-2162 Maria Sonya Nauli Nainggolan; Erwin Erwin; Yanuar Yanuar; Usman Malik
Komunikasi Fisika Indonesia Vol 16, No 1 (2019)
Publisher : Universitas Riau

Topsoil is the recipient of various kinds pollutants, especially heavy metals. Heavy metals have been detected in sand and dust along the highway. Measuring the magnetic properties of road sediment along Kartama road in Pekanbaru City has been done. The magnetic properties measured are magnetic degree, magnetic and mass susceptibility using magnetic induction measurement. The Samples were taken at sixteen locations with the amount of 1 or 2 kg for each point location, the samples were named as samples 16, 7a7e, 8a8e. The magnetic particles of the samples were separated from sand and dust using Iron Sand Separator and later using Neodymium Iron Boron (NdFeB) magnet. The total magnetic induction of the samples and concentrates were measured using Pasco Magnetic Probe PS-2162. In order to measure the magnetic induction of the samples, a solenoid of 3 cm in diameter, length of 10 cm and 2000 of windings was made. The empty solenoid magnetic induction was measured as a function of applied current ranging from 210 A and as a function of horizontal distance of 15 mm from the the solenoid ends. Total magnetic induction (samples and concentrates) was measured for the applied currents of 6 A. The results showed that the highest magnetic degree obtained from the sample number 7e that is 2.54% and the lowest level obtained from the sample number 3 that is 0.17%. The highest magnetic susceptibility value obtained from the sample number 7b was is 9158.12 , and the lowest magnetic susceptibility value obtained from the sample number 2 with the value of 3125.52 . Based on the mass susceptibility values of the concentrate obtained that the sand and dust along the road Kartama Pekanbaru which are in the interval 4.6 to 8.0, they implies that the mass susceptibility of the samples is in the range of Ilmenite phase FeTiO3or antiferromagnetic.

KARAKTERISASI DAN SIMULASI DIODA PN MEMPERGUNAKAN ALAT UJI OTOMATIS BERBASIS MIKROKONTROLER ATMEGA8A Dian Putri Oktavia; Yanuar Hamzah; Rahmondia N.S '; Lazuardi Umar
Komunikasi Fisika Indonesia Vol 13, No 12 (2016)
Publisher : Universitas Riau

Program uji otomatis untuk mengkarakterisasi kurva I-U pada dioda berbasis modul Arduino dengan mikrokontroler Atmega8A telah dilakukan. Empat jenis dioda yang digunakan adalah 1N4007, 1N5401, 1N5392, dan 1N4148 yang dikarakterisasi pada suhu 303K dengan masing-masing tegangan uji (dU) 1mV, 5mV, 10mV, 20mV, 50mV, 100mV, dan 500mV. Pengamatan pengaruh suhu pada dioda menggunakan ruang adiabatis untuk pengukuran tiga suhu yang berbeda yaitu 313K, 323K dan 333K yang kemudian menghasilkan kurva I-U. Hasil pengukuran memperlihatkan kenaikan pada kurva I-U dioda secara eksponensial pada kuadran I (wilayah panjar maju). Untuk parameter dioda, kurva I-U dimodelkan dan disimulasikan yang merujuk pada persamaan dioda dan persen error maksimum sebesar 10,57% berbanding dengan pengukuran dalam full scale.

POTENSI DAUN KETAPANG (TERMINALIA CATAPPA) SEBAGAI BIOREDUKTOR UNTUK SINTESIS NANOPARTIKEL PERAK DALAM PENYERAPAN METILEN BIRU Mega Wati Siregar; Yanuar Yanuar
Komunikasi Fisika Indonesia Vol 18, No 3 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.3.191-196

Nanopartikel perak dapat disintesis dengan metode kimia, namun metode ini dapat menimbulkan dampak negatif bagi lingkungan karena penggunaan zat beracun. Sehingga metode biosintesis lebih diminati karena ramah lingkungan. Biosintesis nanopartikel perak dilakukan menggunakan bioreduktor ekstrak daun ketapang (Terminalia Catappa) sebagai potensi untuk penyerapan metilen biru. Nanopartikel perak adalah bahan semikonduktor yang memiliki potensi sebagai fotokatalis untuk menyerap metilen biru. Proses biosintesis berlangsung pada suhu 80 °C selama 10 menit. Hasil karakterisasi UV-Vis menunjukkan bahwa nanopartikel perak yang disintesis menggunakan perbandingan ekstrak dan larutan AgNO3 1:7 memiliki serapan panjang gelombang yang merupakan karakteristik pembentukan nanopartikel perak pada panjang gelombang 424 nm. Analisa SEM menunjukkan bahwa nanopartikel perak memiliki bentuk morfologi berupa serat nano atau nanofiber. Dari hasil penelitian menunjukkan bahwa semakin lama waktu kontak degradasi maka semakin besar persentasi degradasi zat warna metilen biru. Nanopartikel perak mampu mendegradasi metilen biru dengan konsentrasi 25 mg/L dengan nilai efesiensi degradasi pada waktu optimum 6 jam adalah 86,13%.

SINTESIS DAN KARAKTERISASI NPP PERAK (Ag-NPs) MENGGUNAKAN EKSTRAK KULIT BUAH NAGA SEBAGAI BIOREDUKTOR Rosman Parningotan; Yanuar Hamzah
Komunikasi Fisika Indonesia Vol 17, No 3 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.17.3.139-143

Silver nanoparticle were successfully synthesized by using the red dragon fruit peel extract as a bioreductor. The synthesis process is mixed the solution of silver nitrate (AgNO3) 1mM and red dragon fruit peel extract with a volume ratio 1 : 5 and and then mixed with a few drops of NaOH solution 1M until the solution has a pH of 10 each and then stirred using magnetic stirrer for 14 minutes for each sample then incubator. The sample are characterized using the Ultra Violet Visible (UV-Vis) spectroscopy resulting in the wavelength peaks and energy band gap at 416 nm and 2.98 eV. A functional group that plays a role in reducting AgNO3 using the Fourier Transform Infra-Red Spectroscopy (FTIR) show six major groups that have interval of 602–3427 cm-1. The result of the X-Ray Diffraction (XRD) spectrum analysis saw a 10.07–102.73 nm crystal size with the Face Center Cubic (FCC) crystalline structure and have an Ag2O impurity. From Scanning Electron Microscope (SEM) image shows that morphology of sample is still agglomerated. The findings of the present research lead to conclusion that the red dragon fruit peel was found to reduced the silver ions to silver nanoparticle.

Co-Authors Adela, Adela Aisy, Rihla Datul Akrajas Ali Umar Alamin, Rahmatan Lil Amanullah, Farid Apriwandi Apriwandi . Ariswan Ariswan Ariswan Ariswan Aritonang, Surya Ardika Asiyah, Putri Siti Awitdrus Awitdrus, Awitdrus Azhara, Vina Naomi Butarbutar, Kheny Kernila Darmawan, Ade Dasta, Vicky Vernando Dewi Ramayani Dian Putri Oktavia Dian Putri Oktavia, Dian Putri Erman Taer Erwin Erwin Erwin Erwin Fachry Abda El Rahman Fatanah, Harum Fatimah, Desti Seri Febrita, Ayang Fitri Hayati Ghifariansyah, Abdu Rozaq Iwantono Iwan Barnawi Jimmy Copriady Kartika, Nursiti Sari Krisman Krisman Laia, Meinikmawati Lailatul Rahmi Lazuardi Lazuardi Lazuardi Umar Lazuardi Umar Liong Nyuk Firdaus Manik, Yohana Manurung, Romarito Gesi Maria Sonya Nauli Nainggolan Maslyah, Maharani Nur Maulidya, Shintya Maya Sari Mega Wati Siregar Melinda Vivi Miftahul Jannah Minarni Shiddiq, Minarni Mozaffari, Nastaran Mozaffari, Niloofar Muhammad Mardhiansyah Nahampun, Fernita Nasir, Zulfa Nathania, Nazhiwa Ningrum, Yunita Noferdi, Muhammad Deri Novi Yanti Nuraini, Nasywa Nursyahara, Septia Pasaribu, Veny Sriulina Pratiwi, Dinda Purba, Rosianna Putri, Ella Junian Putri, Nadja Melika Rabiah Rabiah Rabin, Mohammad Fisal Rahmi Dewi Rahmondia N. Setiadi Rahmondia N.S ' Rakhmawati Farma Rati, Yolanda Rini, Ari Sulistyo Rini, Ari Sulistyo Rosman Parningotan Rusmanianty, Rusmanianty Safira, Putri Salomo Salomo Salomo Salomo Salsabila, Sonia Sari, Eza Tirta Sari, Silvia Mayang Sawitri, Seli Novalin Selasih, Dian Sihombing, Ropina Emwarjati Silaban, Ruth Cahaya Marta Uli Simanjuntak, Ignatius Bagas Sumual Simatupang, Mediniah Putri Simbolon, Norsinta Ida Sinaga, Sintia Selfiana Siti Komariah Sugiyanto Sugiyanto Supian, Faridah Lisa Susi ' Syahputri, Intan Syajali, Hidayati Tengku Emrinaldi Tengku Said Hussain Shahab Tetty Marta Linda Titin Hartini Umar, Lazurdi Usman Malik Usman Malik Usman Usman Yenny Desvita Yoga, Figo Swarna Yudani, Ananda Febri Ziliwu, Friska Zulfan Saam Zuyandri, Wandra

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