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All Journal Jurnal Sains dan Pendidikan Fisika Komunikasi Fisika Indonesia Phi : Jurnal Pendidikan Fisika dan Terapan Elkawnie JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX Al Ishlah Jurnal Pendidikan Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Redoks JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Kumparan Fisika Jurnal Geofisika Best Journal (Biology Education, Sains and Technology) Jurnal Teknologi Bahan dan Barang Teknik Jurnal Fisika dan Terapannya CHEDS: Journal of Chemistry, Education, and Science Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan EINSTEIN (E-JOURNAL) Jurnal Ilmu dan Inovasi Fisika
Abdul Halim Daulay
Program Studi Fisika Fakultas Sains Dan Teknologi UIN Sumatera Utara Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Pemanfaatan Selulosa Ampas Tebu Sebagai Bahan Baku Dalam Pembuatan Bioplastik Berbasis Pati Umbi Talas Mawar, Mawarni; Daulay, Abdul Halim; Husnah, Miftahul
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26910

Abstract

Synthetic plastics are made from materials that come from petroleum. These materials do not break down easily and are not affected by chemicals or microbes. Because of this, they last a long time and are hard to get rid of in the environment. Most of these plastics are used only once, which causes a lot of waste over time. It can take up to 1,000 years for these plastics to break down on their own. This study looked at using cellulose from sugarcane bagasse as a material added to bioplastics made from taro starch. Glycerol was used to make the plastic more flexible. Different amounts of cellulose (0 g, 0.5 g, 1 g, and 1.5 g) were mixed with 5 g of taro starch and 2 ml of glycerol. The mixture was then dried. The bioplastics were tested for water absorption, how well they break down, how strong they are, how much they stretch, and their chemical structure using FTIR analysis. The results showed that adding cellulose changed the bioplastics' properties. More water was absorbed, they became stronger and more stretchy, but they broke down less. The best results came when 1.5 g of cellulose was added. This gave a tensile strength of 1.54 MPa, which meets the ASTM E8M standard, and an elongation of 66.7%, which meets the ASTM D882-12 standard. Overall, mixing taro starch with sugarcane bagasse cellulose made better bioplastics, especially in terms of strength and stretch, although the rate at which they break down was lower.
Peningkatan Mutu Kertas Cetak A Berbasis Kulit Talas Dan Serat Sawit Pada Sifat Fisis Sari, Devi Kumala; Jumiati, Ety; Daulay, Abdul Halim
Rekayasa Material, Manufaktur dan Energi Vol 9, No 1: JANUARI 2026
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v9i1.26666

Abstract

Paper is a thin material in the form of sheets that is one of the basic needs used by the community, paper is produced from the compression of fibers derived from pulp containing cellulose. This study aims to determine the characteristics of the paper produced and to determine the effect of the composition of the mixture of taro peel pulp and oil palm fruit fiber on paper quality. This study used the soda method, with variations in the weight of samples A (65%: 35%), B (45%: 55%), and C (25%: 75%). Taro peel and oil palm fruit fiber were first cooked with a 10% acetic acid solution, then bleached using a 10% H₂O₂ solution, then dried. The characterization results of the samples showed that sample C was the optimum sample with a grammage test value of 88 g/m2, a bulk test value of 1.25 cm3/g, and a SEM test value of 9,7089. This value shows that sample C has fulfilled some of the standard of SNI 7274:2008, so it can be concluded that the composition of taro peel pulp and oil palm fruit fiber produces paper with quite good quality.
Pemanfaatan Pati Kentang dan Selulosa Batang Jerami Padi sebagai Bahan Baku Pembuatan Bioplastik yang Ramah Lingkungan Nasution, Mutia Fadilah; Daulay, Abdul Halim; Lubis, Ridwan Yusuf
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.1020

Abstract

This study aims to overcome the weaknesses of starch-based bioplastics by utilizing cellulose extracted from rice straw stalks. The increasing amount of conventional plastic waste that is difficult to decompose has created an urgent environmental problem, so that bioplastics have emerged as an environmentally friendly alternative. However, bioplastics from potato starch have low water resistance and less than optimal mechanical properties. Rice straw stalks were chosen because of their abundant availability and high cellulose content (32-47%). The process of making bioplastics was carried out with variations in the composition of potato starch and rice straw stalk cellulose (100%: 0%; 87.5%: 12.5%; 75%: 25%; and 62.5%: 37.5%), with the addition of chitosan (2 g) and glycerol (2 ml) as additives. The characterizations conducted included water absorption test (ASTM D570-98), biodegradation test, tensile strength test (ASTM E8M), percent elongation (ASTM D882-12), and identification of functional groups using FTIR (Fourier Transform Infrared). The results showed that the addition of rice straw cellulose had a positive effect on the characteristics of bioplastics. The best water absorption test was obtained in sample C (75% Starch: 25% Cellulose) with a value of 13% which meets the ASTM D570-98 standard. The best biodegradation test was obtained in sample B (87.5% Starch: 12.5% ​​Cellulose) with a value of 62%. The maximum tensile strength value was recorded at 1.23 MPa in sample C, and the maximum percent elongation value was 99.2% in sample D. FTIR analysis confirmed the presence of main functional groups (O-H, C-H, N-H, C-O) which indicated an effective interaction between potato starch, rice straw cellulose, and chitosan. Overall, this composite bioplastic shows optimal potential and characteristics as an environmentally friendly material.
Pengaruh Penambahan Asam Oleat terhadap Karakteristik Nanopartikel Magnetit dengan Metode Kopresipitasi Damayanti, Della; Lubis, Ridwan Yusuf; Daulay, Abdul Halim
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.1043

Abstract

This study discusses the use of natural iron sand in the manufacture of magnetite nanoparticles with oleic acid. The purpose of the study is to produce nano-sized magnetite as an alternative photocatalyst material. Magnetite nanoparticles were synthesized with variations of oleic acid (0.75 ml, 1.5 ml, 2.25 ml, 3 ml) and the addition of 7.5 ml of diethylamine. Synthesis was carried out using XRF to determine the elements contained in the iron sand, SEM to determine the surface morphology, and UV-Vis to determine the size of the bandgap. The results showed that increasing the oleic acid content significantly increased agglomeration due to the large number of particles that merged with each other, while increasing the bandgap value. The results showed that the addition of oleic acid had an effect on the iron sand. The highest XRF test of 88.234% was obtained in the iron sand sample before processing, the lowest SEM test was 0.9 μm, and the highest UV-Vis test was 2.644 eV indicating an increase in the bandgap energy value due to the role of oleic acid as a surfactant. The novelty of this research lies in the use of natural iron sand combined with a fixed proportion of oleic acid (up to 3 ml) and diethylamine (7.5 ml). A good bandgap for the photocatalyst is 2.638 eV which is influenced by the addition of oleic acid as a surfactant. These magnetite nanoparticles show optimal potential and characteristics as photocatalyst materials.
RANCANG BANGUN INSTRUMEN PENGUKUR pH DAN TDS BERBASIS MIKROKONTROLER SECARA REALTIME Roma Hidayat; Abdul Halim Daulay; Nazaruddin Nasution
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 9, No 2 (2025)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v9i2.23328

Abstract

Telah dilakukan penelitian yang betujuan untuk menghasilkan instrumen mengukur kualitas air (pH dan TDS) berbasis mikrokontroler secara realtime dan mengetahui unjuk kerja dari instrumen yang dihasilkan.. Rancangan alat menggunakan ATmega328 sebagai mikrokontrolernya, Menggunakan LCD 2x16 untuk penampilan display, Operasional Instrumen menggunakan tegangan Direct Current (DC) dan Instrumen ini digunakan untuk mengukur kualitas air menggunakan sensor pH dan TDS. Rancang bangun instrumen pengukur pH dan TDS berbasis mikrokontroler secara realtime berhasil dibuat, instrumen yang di hitung dapat mengukur kadar pH dan TDS dengan sangat baik. Instrumen pengukur pH dan TDS memiliki tingkat presisi yang sangat baik, hal ini di tunjukkan dari pembacaan yang tidak begitu berbeda dari instrumen sejenis yang sudah ada di pasaran, tingkat error pembacaan untuk instrumen pH dan TDS masing-masing adalah sebesar 2,27 % dan 2,1 %Kata-kata Kunci : Air, pH, TDS, dan Mikrokontroler
OPTIMALISASI PENENTUAN POSISI SUDUT PANEL SURYA DALAM KEADAAN STATIS DAN DINAMIS Taufiq Hidayat; Abdul Halim Daulay; Masthura Masthura
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 9, No 2 (2025)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v9i2.25538

Abstract

Research has been carried out which aims to produce a solar panel positioning system based on the Arduino microcontroller, and to find out the optimal power measurement results based on the position of the solar panels. The research tools used in this research were the Arduino microcontroller as a tracking system, the LDR sensor as a tracker of the sun's movement, the MG966R servo motor as an actuator or driving system to follow the sun's tracks, and a 5 WP solar panel as a light source. The approach or method used in this study is scientific, namely an approach based on science and technology. The test method used is the direct test method. In a system that has been successfully designed, four LDR sensors act as input data which will be converted as tracking. From the test results of the Dual axis solar tracker the average voltage without and with the tracking system is 7.74 volts and 8.56 volts with the average current without and with the tracking system being 0.35 A and 0.44 A. The optimal angle obtained based on testing using the system is in the second test phase where the angle formed is 84 with a voltage obtained of 9.4 V and a current of 0.53 A with the power generated is 4.10 Watt
ANALISIS KARAKTERISTIK LARUTAN ELEKTROLIT PHYLLANTHUS ACIDUS SEBAGAI SUMBER ENERGI TERBARUKAN Rizky Wahyuni Lubis; Abdul Halim Daulay; Khairiah Khairiah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 9, No 1 (2025)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v9i1.23320

Abstract

Telah dilakukan penelitian yang bertujuan: (i) menghasilkan perangkat karakterisasi larutan elektrolit Phyllanthus acidus, (ii) untuk mengetahui karakterisasi larutan elektrolit Phyllanthus acidus. Metode yang digunakan adalah metode eksperimental laboratoris. Pada penelitian ini digunakan larutan elektrolit yang dihasilkan dari semua jenis buah cermai (Phyllanthus acidus). Variasi pasangan elektroda yaitu Cu-Zn, Cu-Al, dan Cu-Pb. Variasi volume larutan 100, 200, 300 ml. Variasi jarak 2, 4, dan 6 cm. Variasi konsentrasi penambahan NaCl yaitu 1,67%, 3,33%, 5,00%, 6,67%, 8,33%, dan 10,00%. Pada penelitian ini untuk mengetahui pengaruh penambahan volume menggunakan jarak 2 cm dengan elektroda Cu-Zn, Cu-Al, dan Cu-Pb. Pengukuran untuk mengetahui pengaruh jarak elektroda yaitu menggunakan volume 300 ml dengan elektroda Cu-Zn, Cu-Al, dan Cu-Pb. Sedangkan untuk mengetahui pengaruh penambahan konsentrasi NaCl terhadap larutan menggunakan volume 300 ml dengan jarak elektroda 2 cm dan pasangan elektroda Cu-Zn, Cu-Al, dan Cu-Pb. Dari hasil penelitian yang dilakukan Perangkat karakterisasi larutan elektrolit Phyllanthus acidus telah berhasil dibuat dengan performansi yang baik. Hasil dan analisis secara keseluruhan didapatkan bahwa perubahan volume, variasi jarak, dan penambahan konsentrasi NaCl memberikan nilai kuat arus dan tegangan yang berbeda serta konduktivitas dan padatan zat terlarut yang berbeda pula. Akan tetapi pengaruh pH terhadap penambahan volume larutan dan penambahan NaCl cenderung mempertahankan pH nya. konsentrasi NaCl ke dalam larutan, semakin besar konsentrasi NaCl semakin besar tegangan dan arus atau nilai keluaran listriknya dan konduktivitas serta padatan zat terlarut dalam larutan semakin besar pula. Pada penelitian ini elektroda Cu-Zn merupakan elektroda terbaik dalam menghasilkan nilai keluaran listrik dibandingkan elektroda Cu-Al dan Cu-Pb.Kata Kunci: Phyllanthus acidus, Kuat Arus, dan Tegangan
KARAKTERISTIK BETON POLIMER BERBASIS CANGKANG KERANG DENGAN PEREKAT RESIN POLYESTER Resi Apriyana; Abdul Halim Daulay; Shinta Marito Siregar
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 9, No 1 (2025)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v9i1.23321

Abstract

Telah dilakukan penelitian tentang karakteristik beton polimer berbasis cangkang kerang dengan perekat resin polyester yang bertujuan:(i) untuk menghasilkan beton polimer berbasis cangkang dan resin polyester , (ii) untuk mengetahui karakteristik beton polimer yang dihasilkan, dan (iii) untuk mengetahui komposisi campuran pasir silika serbuk cangkang kerang dan resin poliester . Bahan dasar penelitian ini adalah pasir silika, cangkang kerang, dan resin poliester . Pasir silika dan resin poliester diperoleh secara komersial, cangkang kerang diperoleh dari limbah sampah rumah makan. Cangkang kerang dan pasir silika diayak menggunakan ayaman 100 mesh. Variasi komposisi pencampuran antara pasir dan cangkang kerang adalah 1:3, 1:4, dan 1:5 dengan penambahan resin polyester sebanyak 20dan 25% dari massa agregat. Dalam pembuatan beton polimer dengan menggunakan karakteristik mekanik seperti kuat tekan menghasilkan nilai terbaiknya di komposisi 25% degan pencampuran variasi 1:4 dengan nilai sebesar 58,308 MPa, untuk kuat patah menghasilkan nilai terbaik di komposisi 20% dengan pencampuran variasi 1:5 dengan nilai sebesar 3 ,7376 MPa. Dan untuk karakteristik fisis yang menggunakan kepadatan dapat menghasilkan nilai terbaik di komposisi 20% dengan variasi 1:5 dengan nilai sebesar 2023,3 kg/m3. Dan untuk pengujian SEM diperoleh hasil foto yang menunjukkan bahwa pasir, serbuk cangkang kerang dan polyester yang digunakan telah berhasil menutup pori-pori, sudah terdistribusi secara merata kecuali pada bagian tertentu yang masih terlihat adanya penggumpalan. Dari hasil pembuatan beton polimer yang berbahan dasar serbuk cangkang kerang dan polyester dapat dilihat bahwa data yang mempunyai nilai tertinggi adalah campuran variasi pasir dan serbuk cangkang kerang dengan perbandingan 1:4 dan dengan komposisi polyester 25%.Kata-kata Kunci : Polimer Beton, Cangkang Kerang, Poliester , Scanning Electron Microscopy (SEM)
The Influence of Tilt Angle of 120 WP Solar Panels on Light Intensity and Generated Electrical Power Masthura Masthura; Abdul Halim Daulay
Elkawnie Vol. 10 No. 1 (2024)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i1.20407

Abstract

Abstract: In designing solar panel devices, generally the tilt angle of the panel surface is designed with a static design and this greatly influences the results of the electricity source generated. The design of the tool is intended to be in coordinates that are perpendicular to the direction of the sunlight rays so that it receives maximum solar radiation. This research aims to determine the relationship between the tilt angle of the solar panels and the light intensity and electrical power generated and to determine the optimal tilt angle of the solar panels based on the values of light intensity and electrical power. The indicators measured consist of light intensity, voltage, current and electrical power by varying the tilt angle of the solar panel. The results of this research show that the tilt angle of the solar panel greatly influences the measured light intensity value so that the greater the light intensity obtained, the higher the output voltage of the solar panel. The most optimal tilt angle is at an angle of 105o and 120o with the greatest light intensity so that the resulting output power is correspondingly greater.Abstrak: Dalam merancang alat panel surya, pada umumnya posisi kemiringan dari permukaan panel dirancang dengan desain statis sangat mempengaruhi hasil dari sumber listrik yang dihasilkan. Rancangan alat  diupayakan  berada di koordinat yang  tegak lurus dengan arah pancaran cahaya matahari agar menerima radiasi matahari yang maksimal. Penelitian ini bertujuan untuk mengetahui hubungan posisi kemiringan panel surya terhadap intensitas cahaya dan daya listrik yang dihasilkan serta mengetahui posisi kemiringan panel surya yang optimal berdasarkan nilai intensitas cahaya dan daya listriknya. Indikator yang diukur terdiri dari intensitas cahaya, tegangan, arus, dan daya listrik  dengan memvariasikan posisi kemiringan dari panel surya. Hasil penelitian ini menunjukkan posisi kemiringan sebuah panel surya sangat mempengaruhi  nilai intensitas cahaya yang diukur sehingga semakin besar intensitas cahaya yang didapat maka tegangan keluaran panel surya mengalami kenaikan. Posisi kemiringan yang paling optimal pada sudut 105o dan 120o dengan intensitas cahaya yang didapat terbesar sehingga daya keluaran yang dihasilkan sejalan yaitu semakin besar pula.
Co-Authors Adelyna Oktavia Nasution Ahmad Nuruddin Aida Febriana Tanjung Amanda, Syahna Dwi Anggun Hermi Palupi Armais Mutiah Abdul Hidayat Arninda Pratiwi asnitha aritonang Aulia Farihanum Aulia Khusnul Arif Z.A Ayu Saputri Saragih Bambang Sunendar P Bharata Dewanto Daulay, Zubair Aman Daulay, Zubair Aman Della Damayanti, Della Dickiy Akbar Dita Khairunnisa endang sagita ritonga Ependi, Fadli Ety Jumiati Ety Jumiati Ety Jumiati Fadhilah, Elsa Harahap, Balkis Br Harahap, Gery Syahputra harahap, mira yanti Haryu Wanda Desgira Heni Puspita Sari Husna, Afifah Husna, Afifah Husnah, Miftahul Hutauruk, Siti Aulia Indah Sawitri Irmawati Koto Jefri Ardiansyah Nasution Jumiati, Ety Jumiati, Ety Juwita Juwita Kartika Manalu Khairiah Khairiah Khairiah, Khairiah Khairiah, Khairiah Khairul, Fikri Khairunnisa, Devi Khobir, Mustofa Lailatul Husna Lubis Lansari Daulay Laras Ashari Setiawan Leli Mariati Situmorang Lespita, Jeni Dhea Lisa Astari Lisa Herdiana Sinurat Lubis, Fadilah Azzahra Lubis, Hilwa Salsabila Lubis, Lailatul Husna Masthura Masthura, Masthura Mawar, Mawarni Miftahul Husnah Miftahul Husnah Miftahul Jannah Daulay Miftahul Jannah Daulay Minta Ito Muhammad Amrin Siregar Muhammad Amrin Siregar Mulkan Iskandar Nasution Mulkan Iskandar Nasution Nadilla Putri Nadjara Yolanda Nanda Putri Afrilda Nasution, Annisa Wulan Dhari Nasution, Mutia Fadilah Nasution, Nazaruddin Nazaruddin Nasution Nita Zahara Nasution Nur'aini Fadillah Nurainun Br Pasaribu Nurhayati Nurhayati Nurika Khalila Daulay Nurmaisah Harahap Ong, Russell Pasaribu, Adella Ayu Putri Pinem, Lela Feranita Prabowo, Diki Purnama Indah Lase Putra, Tyas Hermawan Putri Dwi Ananda Putri Indah Sari Putri Rabiatul Amalia Sitorus Rahmasari Pohan Ramidin, Ramidin Ratni Sirait Ratni Sirait Reflina Reflina Resi Apriyana Ria Muliyana Ridwan Yusuf Lubis Rika Ramtika Rika Safitri Riri Angriani Nasution Rizky Wahyuni Lubis Roma Hidayat Rosari, Ruri Sahdinal Adi Sapria, Thasha sari, Bella Novita Sari, Devi Kumala selvia, niki Sholihatul Hamidah Daulay Sihombing, Zulkarnain Sirait, Ratni Siregar, Shinta Marito Siska Siska Siti Hawa Hasibuan Siti Maysarah Siti Nur Aisyah Siti Rahma Daulay Sitorus, Widia Arti Syafitri Sri Wahyuni Ritonga Sucitawati, Nopita Sugeng Sugeng Susanto Sigit Rahardi Susi Nurindah Taufiq Hidayat Tri Ninda Malika Tunjiah , ufik eliati tumanggor Utari, Dinda Widia Arti Syafitri Widya, Eka Zafira Amalia Nasution Zubair Aman Daulay