Jurnal FisTa : Fisika dan Terapannya
Jurnal FisTa : Fisika dan Terapannya merupakan salah satu Jurnal Nasional dalam bidang Ilmu Fisika dan Terapannya di bawah pengelolaan Program Studi Fisika Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado. Jurnal FisTa : Fisika dan Terapannya memiliki nomor eISSN 2747-1691. Jurnal FisTa : Fisika dan Terapannya diterbitkan pertama kali pada tahun 2020. Hal ini dilakukan, untuk merespon para mahasiswa, dosen dan juga peneliti di bidang Fisika dan Terapannya untuk dapat membagi hasil penelitiannya dalam bentuk artikel ilmiah. Ruang lingkup artikel dalam Jurnal FISTA Fisika dan Terapannya adalah Ilmu Fisika dan Terapannya, diantaranya terkait dengan topik : Fisika Material; Fisika Teori; Fisika Material Lunak; Fisika Komputasi; Fisika Instrumentasi; Astronomi; Fisika Koloid; Geofisika; Elektronika: Fisika terapan terkait lainnya.
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63 Documents
<![CDATA[STUDI DENSITAS LINEAMENT DAN POLA ALIRAN PERMUKAAN DAERAH MANIFESTASI GEOTERMAL DI SEKITAR DANAU ]]>
<![CDATA[Cyrke A. Bujung]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 1 (2020): APRIL ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i1.55
<![CDATA[North Sulawesi is an area with a complex geological structure because North Sulawesi is located in a collision zone of three plates at once. Therefore, North Sulawesi has geothermal potential which can be used as a power plant. Surface manifestations associated with surface geological structures can be identified based on lineament analysis on remote sensing images. This study aims to identify the geological structure of the surface of the geothermal area based on its lineament density, flow patterns, and surface manifestations. The surface structure was analyzed by lineament density at the surface by the FFD method. This lineament is assumed to be associated with a fracture or fault which in the geothermal area is generally covered by surface manifestations so that it is difficult to identify. These faults and fractures are assumed to be weak areas where the thermal fluid moves so that they can be a clue to the location of the permeable area or reservoir. The results showed that the high density of surface geological structures is associated with the presence of geothermal manifestations on the surface of the Tondano caldera and its surroundings. The manifested area is an area with a dense flow pattern and is a young volcanic rock.]]>
<![CDATA[ANALISIS PANDU GELOMBANG MENGGUNAKAN BRAGG RELECTOR SEBAGAI CLADDING ]]>
<![CDATA[Donny R. Wenas]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 1 (2020): APRIL ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i1.56
<![CDATA[This study aims to examine the mode that can pass through the waveguide and calculate the filling factor and efficiency of the Bragg Reflector. For that purpose in this research, a program using Matlab has been created to analyze the propagation data of the waves in the material, cylindrical waveguides, and Bragg reflectors. From the results of this study, it has been found that a cylindrical perforated waveguide with a Bragg Reflector as a cladding, is one way to overcome the chromic dispersion of optical fiber materials. This is because the electromagnetic waves traveling through the air (n=1) do not experience dispersion. The replacement of the core material with air requires a sheath that acts as a reflector at a certain wavelength, this sheath is known as a Bragg Reflector. The calculation of the band structure of the Bragg Reflector shows the presence of a bandgap in the coordinates. This pair in the bandgap area experiences the reflection required for the waveguide. From the continuity requirement, the forbidden bandgap shows the mode that can propagate in the optical fiber, the efficiency is calculated and the amplitude and power profile graphs are plotted. From the results of the calculations performed, it is found that each mode has an efficiency of more than 60% and increases for wider cores, both for single-mode and multi-mode.]]>
<![CDATA[IDENTIFIKASI MINERAL BATUAN PADA DAERAH MANIFESTASI MATA AIR PANAS DI KOYA KECAMATAN TONDANO SELATAN KABUPATEN MINAHASA MENGGUNAKAN SEM-EDX DAN FTIR ]]>
<![CDATA[Ronaldo B. rey]]>;
<![CDATA[Cosmas Poluakan]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 1 (2020): APRIL ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i1.57
<![CDATA[Indonesia's geological conditions make a real contribution to the availability of geothermal energy in Indonesia, the types of rocks that exist in the area of manifestation vary in metal and mineral content. North Sulawesi Province is one of the regions that has alteration rocks which are found in many areas of manifestation of geothermal. The purpose of this study was to determine the composition of elements and types of minerals in altered rocks in the manifestation area of Koya Hot Springs, South Tondano District, North Sulawesi Province. The method used is the electron beam method on SEM, and EDX uses the energy dispersive X-ray and FTIR methods. The results of the analysis on SEM-EDX showed that in sample-1 the rocks in the hot springs had elements containing 30.51% silica (Si) minerals and 69.49% oxygen (O) while in sample-2 oxygen-O 71,89 %, silica (Si) 15.28 % and aluminum (Al) 12.83%. The FTIR spectra of sample-1 with 778 cm-1 and sample-2 779 cm-1 wavenumber are quartz. This result is consistent with SEM-EDX analysis with the mineral composition is Silica (Si) and Oxygen (O).]]>
<![CDATA[HILANG PANAS ALAMIAH MANIFESTASI PANAS BUMI DI DAERAH MINAHASA SULAWESI UTARA ]]>
<![CDATA[Satyano Mongan]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 1 (2020): APRIL ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i1.58
<![CDATA[The area of Minahasa North Sulawesi has potential subsurface geothermal resources. This is evidenced by the appearance of geothermal manifestations on the surface which are scattered in many places. According to the law of energy balance, the heat stored in a reservoir is equal to the heat that escapes to the surface through the discharge area. Therefore, to estimate the amount of heat stored in the geothermal reservoir below the surface, measurement and calculation of the amount of heat that naturally comes out of the surface will be carried out. This study aims to determine the amount of natural heat loss from geothermal manifestations in the Minahasa area, especially in Leilem Village and its surroundings, as well as to determine the amount of geothermal speculative resources below the surface. The method used is a combination of geological and geochemical methods with measurement of physical parameters in the geothermal manifestation. The results showed that the total natural heat loss of geothermal manifestations in Minahasa Regency, especially in Leilem Village, Sonder District was 684,399 KW, while the large speculative resources of the geothermal potential were 6843.99 KW or 6.84 MW.]]>
<![CDATA[SIMULASI ALIRAN KONVEKSI FLUIDA DI DAERAH RESERVOIR PANAS BUMI ]]>
<![CDATA[Alamta Singarimbun]]>;
<![CDATA[Famelia Nurlela]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 1 (2020): APRIL ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i1.59
<![CDATA[The potential of geothermal energy can be determined by the potential classification based on performed simulation. The simulation results show the quality of geothermal energy utilization can be optimized. Under natural conditions, a geothermal system consists of a heat source, the bedrock layer, reservoir layer, and caprock layers. The process of conduction heat transfer occurs when a heat source to transfer heat to the bedrock and bedrock is heat transfer by convection to the reservoir. The heat transfer process makes the temperature at any depth is different and will change with time. Numerical simulation and modeling of two-dimensional sebara done to simulate the fluid temperature in the geothermal reservoir which satisfies equations of fluid flow in a porous medium for single-phase flow (Darcy's law). The observed parameters are the temperature distribution, pressure, and direction of fluid flow in a reservoir. Didiskritisasi mathematical equations using finite difference or difference-up. The computational process is done by using Matlab software]]>
<![CDATA[PENGARUH MEDAN LISTRIK TERHADAP ORIENTASI MOLEKUL DISPERSE RED-19 TERDEPOSISI DI ATAS SUBSTRAT SILANE DENGAN METODE PHYSICAL VAPOR DEPOSITION ]]>
<![CDATA[Deitje Sumolang]]>;
<![CDATA[Donny Royke Wenas]]>;
<![CDATA[Alfrits Komansilan]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.85
<![CDATA[Molecular Disperse Red 19 (DR-19) is known as a potential material for photonic device applications such as optical switching and optical data storage. For the application of this photonic device, a good quality film is needed, which has a flat surface, homogeneous thickness, optical stability, and good optical properties.This study aims to examine the effect of the silane substrate surface and the external electric field of 3.3 MV / m in regulating the molecular orientation of the DR-19 film on the silane substrate surface.The fabrication method used is the PVD (Physical Vapor Deposition) method assisted by an external electric field. The film was made on the surface of the silane substrate with the deposition of DR-19 molecules in a variety of external electric fields, namely no electric field (zero field) and the electric field E = 3.3 MV / m. The films were analyzed and characterized using X-ray diffraction spectroscopy (XRD). The results of the X-ray diffraction measurement analysis show that the DR-19 molecules are stacking perpendicular to the surface of the silane substrate, which shows an indication of the strong surfactant effect of the substrate from the hydrogen bonding of the DR-19 molecule with silane substrate. The results of spectroscopic measurements show that with the increase in the external electric field, there is an increase in the effect of aggregation of molecules arranged in an orderly manner perpendicular to the surface of the silane substrate.]]>
<![CDATA[STUDI IKATAN HIDROGEN PADA ORIENTASI MOLEKUL DISPERSE RED-1 DENGAN METODE PVD BERBANTUAN MEDAN LISTRIK ]]>
<![CDATA[Johana P. Tampi]]>;
<![CDATA[Donny Royke Wenas]]>;
<![CDATA[Marianus]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.88
<![CDATA[Organic molecules with a conjugated chain structure such as the Disperse Red-1 (DR-1) molecule are known as potential materials for photonic device applications. The aim of this research is to study the surface effect of Indium Tin Oxide (ITO) substrate and the external electric field of 2.6 MV / m in regulating the orientation of the DR-1 film molecules on the surface of the ITO substrate. The fabrication method used is the PVD (Physical Vapor Deposition) method assisted by an external electric field. This method is a modification of the conventional PVD method which is equipped with the addition of an external electric field (E) in the chamber. The film was made on the surface of the ITO substrate with the deposition of DR-1 molecules in a variation of the external electric field, namely zero field and E = 3.3 MV / m. The films were analyzed and characterized using XRD (X-Ray Diffraction) spectroscopy. The X-ray diffraction measurement analysis showed that the DR-1 molecules were arranged in an orderly manner parallel to the surface of the ITO substrate, indicating an indication of the strong surface effect of the ITO substrate from the hydrogen bonding of the DR-1 molecule with the ITO substrate. The results of spectroscopic measurements show that with an increase in the external electric field, there is an increase in the effect of aggregation of molecules arranged in an orderly manner perpendicular to the surface of the ITO substrate.]]>
<![CDATA[PENGARUH INDEX EL NINO TERHADAP CURAH HUJAN DI BANDARA MELONGUANE KABUPATEN TALAUD ]]>
<![CDATA[Michael William Lie]]>;
<![CDATA[Alfrits Komansilan]]>;
<![CDATA[Setyano W. Mongan]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.89
<![CDATA[Rain is one of the most important climatic elements, but its existence spatially and temporally is still difficult to predict. Apart from being dynamic, the physical processes involved are also very complex. This rainfall uncertainty is getting bigger when climate anomalies occur in the form of El Nino and La Nina. To determine the changes in the el nino index when it rains, in this study a cross-correlation coefficient method with time lag on rain events will be carried out by utilizing data from observational data at the location of the BMKG Sam Ratulangi Meteorological Station. This method used a tool to predict the connection of a data series x (input) with data y (output) in a system. In order to perform a cross-correlation analysis, the two series must be sampled at the same time interval. The secondary data on rainfall and the El Nino index obtained by the researcher have a time interval of half an hour and start from 7 am to 6 pm. The correlation coefficient value of the El Nino index with rainfall in 2015 shows a coefficient value of -0.26467, in 2016 it shows an efficiency value of -0.43383, in 2017 it shows a coefficient value of 0.37771.]]>
<![CDATA[ANALISIS STRUKTUR FISIS DAN SIFAT OPTIK FILM TIPIS SUDAN III HASIL DEPOSISI EVAPORASI VAKUM ]]>
<![CDATA[Prisilia Wakary]]>;
<![CDATA[Heinrich Taunaumang]]>;
<![CDATA[Jimmy Lolowang]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.90
<![CDATA[Thin films based on azobenzene molecular are known as responsive molecular, which are easy to deform when exposed to light or interact whit other molecular. Fabrication of Sudan III thin film for sensor technology application has been carried out bay using PVD method. The physical structure crystallinity of thin film have been investigate by using XRD method. In this paper would be describe the variable distance between the crystal plane, the crystal size, and the crystal index at sudan III in the form of powder and thin film from vacuum evaporation. The optical properties of thin film Sudan III will also be discussed.]]>
<![CDATA[POLA PERUBAHAN HARIAN SUHU AIR DAN KECEPATAN ARUS DI SEKITAR GUNUNG API BAWAH LAUT MAHENGETANG ]]>
<![CDATA[Stivano Mamarama]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Farly Tumimomor]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.91
<![CDATA[Indonesia an archipelago with 70% of the territorial waters stretching from the western end of Sumatra Island to the east of the Papua region, with the characteristic of the vast ocean of underwater structures in the Indonesian archipelago is also important to be discussed deeper. For that the underwater volcano research is very rare. This undersea research has been implemented and is a collaborative research study with DRPM's beginner lecturer SCHEME research with the title of Master of Umbrella research "The analysis and modeling of Temporal changes and partial fraction of the sea water temperature at the Mahengetang underwater volcano". Involving 3 UNIMA students. The expedition was held from 20 to 22 March 2019. Where one of the objectives of this research is to obtain the data on water temperature fluctuations and the current speed of the underwater volcano Mahengetang has shown the pattern of water temperature and the current velocity of sea water from the upstream and downstream transect. From the results of analysis and modeling showed that the hydrodynamics factor and geothermal energy. The results of the hydrodynamics analysis indicate that the current velocity relies on tidal activity. The results of analysis and modeling show that water temperature varies horizontally and vertically. The velocity of currents and the masses of warm water are associated with the pattern of spatial distribution of coral reefs. The results of this PHISYCS analysis became a reference to the content of water chemicals, and biotic components such as coral reefs and various biota that live in it.]]>
