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Fisitek : Jurnal Ilmu Fisika dan Teknologi
Published by Universitas Islam Negeri Sumatera Utara
ISSN : 25806661     EISSN : 2580989X     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education Physics
FISITEK: Jurnal Ilmu Fisika dan Teknologi is a peer-reviewed journal which covers all aspects of theoretical and practical research of physics and their use. FISITEK is published by Physics Department of Science and Technology Faculty, State Islamic University of Sumatera Utara Medan (Universitas Islam Negeri Sumatera Utara Medan), Indonesia. FISITEK appears twice a year, in February and August. FISITEK is available in electronic and print editions.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2022)" : 5 Documents clear
Calculating Transmission Coefficient on Superlattice Structure Using Propagation Matrix Method Ong, Russell
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.11549

Abstract

The tunneling effect is a phenomenon where the particle can penetrate the barrier potential even though the particle energy is smaller than the barrier potential value. The probability of an electron to penetrate the barrier potential depends on the transmission coefficient. This study aims to investigate the transmission coefficient on the superlattice structure. The studied superlattice structure is formed from 12 potential barriers which are divided into two types of barriers (barrier A and barrier B). Thus, the periodicity of this superlattice is the periodicity of the two types of barrier potentials that align to each other. The transmission coefficient was calculated numerically using the matrix propagation method with the support from MATLAB R2009a software. The variations in the value of the barrier potential A are 5 eV, 10 eV, and 15 eV, while the variations in the value of the barrier potential B are 5 eV and 10 eV. Subsequently, the concept of electron effective mass is also included once in the state of barrier potential A (B) of 5 eV (10 eV). To observe clearly the miniband and minigap, the electron energies were varied from 0 eV―15 eV. The exception is when it involves the concept of electron effective mass where the electron energy is varied from 0 eV―30 eV. Based on the results of numerical computations, the graph of relation between transmission coefficient and electron energy showed that minigap and miniband are also formed in this structure. The width of the minigap from the first to next does not increase continuously, but changes iteratively from small to large and so on. When the concept of effective mass of electrons is taken into account, the electron energy range under test must be set higher so that it is clear whether the miniband and minigap are alternately formed.
ANALYSIS OF CHARACTERISTICS OF PHYLLANTHUS ACIDUS ELECTROLYTE SOLUTION AS A RENEWABLE ENERGY SOURCE Lubis, Khairiah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.8869

Abstract

Research has been conducted which aims to: (i) produce a characterization device for Phyllanthus acidus electrolyte solution, (ii) to determine the characterization of a Phyllanthus acidus electrolyte solution. The method used is an experimental laboratory method. In this study electrolyte solutions were used which were produced from all types of cermai fruit (Phyllanthus acidus). Electrode pair variations are Cu-Zn, Cu-Al, and Cu-Pb. Variations in the volume of the solution 100, 200, 300 ml. Variations in distances of 2, 4 and 6 cm. NaCl addition concentration variations were 1.67%, 3.33%, 5.00%, 6.67%, 8.33% and 10.00%. The measurement results are the voltage and current that are tabulated and analyzed. In this study to determine the effect of adding volume using a distance of 2 cm with electrodes Cu-Zn, Cu-Al, and Cu-Pb. Measurement to determine the effect of the electrode distance is to use a 300 ml volume with Cu-Zn, Cu-Al, and Cu-Pb electrodes. Meanwhile, to determine the effect of increasing the concentration of NaCl to the solution using a 300 ml volume with a distance of 2 cm electrode and the electrode pairs Cu-Zn, Cu-Al, and Cu-Pb. From the results of research conducted the characterization device of Phyllanthus acidus electrolyte solution has been successfully made with good performance. Referring to the results and analysis as a whole, it is found that changes in volume, variation in distance, and addition of NaCl concentration give different values of current strength and voltage as well as different conductivity and solids of solutes. However, the effect of pH on increasing the volume of solution and adding NaCl tends to maintain its pH. At the addition of the volume of the solution there is a linear relationship between the addition of volume to the output electricity ie the greater the volume of the electrolyte solution of Phyllanthus acidus fruit is used, the higher the electric power produced. Whereas in electrode distance testing there is an inverse relationship between the electrode distance with the output voltage and electric current ie the closer the electrode distance the greater the value of the current and voltage produced, conversely the farther the distance between the electrodes the smaller the value of the voltage and electrical output. Likewise with the addition of NaCl concentration into the solution, the greater the concentration of NaCl the greater the voltage and current or the value of the electrical output and the greater the conductivity and solute solids in the solution. In this study, Cu-Zn electrodes are the best electrodes in producing electrical output values compared to Cu-Al and Cu-Pb electrodes. 
ANALYSIS OF PEAK GROUND ACCELERATION (PGA) VALUE DISTRIBUTION BASED ON MICROTREMOR DATA IN THE OFFICE REGION OF NORTH KONAWE Laksana, Nidya Lena; Said, Muh; hernawati, hernawati; wahyuni, ayusari
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.11709

Abstract

Penelitian ini bertujuan mengetahui sebaran nilai Peak Ground Acceleration berdasarkan data mikrotremor di wilayah perkantoran Konawe Utara. Penelitian ini menggunakan metode HVSR untuk mendapatkan frekuensi dominan, faktor amplifikasi, periode dominan, indeks kerentanan seismik dan percepatan gerakan tanah. Hasil yang diperoleh dari pengolahan data mikrotremor adalah sebaran nilai frekuensi dominan dalam kategori tinggi pada titik pengukuran K1, K2, K5, K6, K9 dengan rentang nilai 6,69-7,57 Hz, faktor amplifikasi pada kategori rendah berada pada titik pengukuran K8 dengan rentan 2,8, periode dominan pada kategori rendah berada pada titik pengukuran K1, K2, K5, K6, K8 dan K9 dengan nilai rentan 0,13-0, 19 detik, indeks kerentanan seismik kategori rendah berada pada titik pengukuran K2, K5, K6, K8, dan K9 dengan rentang nilai 1,49-1,67 dan nilai PGA titik pengukuran K1-K9 termasuk dalam kategori rendah yaitu skala II dengan rentang nilai 23,24-23,31 gal. Sehingga dapat disimpulkan bahwa daerah penelitian ini termasuk dalam kategori tingkat bahaya seismik rendah.
PRELIMINARY STUDY OF WASTE UTILIZATION OF DRIED BANANA LEAVES AS FOOD CONTAINER WITH VARIOUS TYPES OF ADHESIVE Aminah, Aminah; Hernawati, Hernawati; wahyuni, ayusari
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.8684

Abstract

Research has been conducted entitled utilization of dried banana leaf waste as a food container with various types of adhesives. This study aims to find out the physic quality of food containers. The research method carried out was the method of analysis of food containers by testing the absorption of water with normal temperature of water and silenced for 60 minutes and for the resistance test of the container based on temperature parameters of 40ºC, 60ºC and 80ºC which in the test was silenced for 30 minutes. Both tests were given a water volume of 125 ml. From the test results of dry banana leaf containers with adhesive types of tapioca flour and sago flour has changed but can still be used and jackfruit rubber adhesive does not undergo a change in shape so that it can be used as a food container as well as synthesis adhesives do not undergo a change in shape but in its testing produces a pungent smell meaning food containers from synthetic adhesives can not be used as food containers. 
Mechanical Test of Brick with Addition of Sugarcane Bagasse Ash Sawitri, Indah
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.6862

Abstract

Research has been done on the mechanical test of brick with the addition of bagasse ash. In this study, the tested bricks tested were compressive strength and fracture strength. The purpose of this study was to determine the effect of adding bagasse ash to the mechanical properties of bricks. The variation of the percentage of bagasse ash, cement, and sand is 0% : 30% : 70% , 5% : 25% : 70%, 10% : 20% : 70%, 15% : 15% : 70%, 20% : 10% : 70% and used FAS (Water Cement Factor) of 0.5 in all variations. The addition of bagasse ash as a substitute for cement has a significant effect on the characteristics of the bricks. With the addition of bagasse ash in a mixed variation of 5 – 20% causes the compressive strength value to decrease. Meanwhile, the fracture strength increased in the mixed variation of 5-10% and decreased in the mixed variation of 15-20%. The most optimal composition of the mixture of bagasse ash, cement, and sand is at a mixture variation of 5% for compressive strength testing and fracture strength testing because it meets SNI 03-0348-1989 standards. While the other mixture variations are not optimal.

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