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INDONESIA
INDONESIAN JOURNAL OF APPLIED PHYSICS
Published by Universitas Sebelas Maret
ISSN : 20890133     EISSN : 24776416     DOI : -
Core Subject : Science,
Astronomy Energy Materials Science & Nanotechnology Physics
Indonesia Journal of Apllied Physics provides rapid publication of short reports and important research in all fields of physics. Indonesia Journal of Apllied Physics publishes articles that are of significance in their respective fields whilst also contributing to the disclipline of physics as a whole. Articles should be submitted to the Editorial Office of Indonesia Journal of Apllied Physics through this site. Further information on submission is also available at this site
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Articles 239 Documents
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Pengaruh Doping Nikel dan Suhu Sinter pada Pembuatan Kawat Superkonduktor Magnesium Diborida Herbirowo, Satrio; Hanafi, M Nur; Imaduddin, Agung; Utomo, Edy Priyanto; Hendrik, Hendrik; Trenggono, Aditya; Yustanti, Erlina
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 2 (2020): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v10i2.34984

Abstract

Peningkatan sifat superkonduktor MgB2 melalui penambahan doping telah banyak dilakukan. Meskipun begitu, pembuatan kawat superkonduktor MgB2  belum secara optimal dihasilkan akibat porositas yang terbentuk dari struktur lapis MgB2. Tujuan penelitian ini adalah untuk menganalisis efek penambahan doping nikel terhadap nilai kristalinitas dan kepadatan serta temperatur optimum dalam sintesis kawat superkonduktor berbasis MgB2. Variabel proses pada sampel yang digunakan yaitu variasi persen berat doping Nikel dan temperatur sintering. Karakterisasi   yang   digunakan   meliputi   Xray   Diffraction   (XRD),   Scanning   Electron Micoscope-Energy Dispersive Spectroscopy (SEM-EDS), dan Cryogenic Magnet. Pembuatannya menggunakan proses metalurgi serbuk dengan metode powder in tube secara in-situ dan manufaktur pengerolan kawat. Pengerolan dilakukan reduksi ukuran diameter 6 mm menjadi 4 mm, serta panjang awalnya 10 cm menjadi ±26 cm. Dari hasil XRD menunjukkan bahwa sampel dengan doping nikel menghasilkan fasa primer MgB2  dan fasa sekunder MgNi2.5B2  serta beberapa pengotor (MgO dan Mg) dengan ukuran kristalit lebih meningkat dibandingkan MgB2 tanpa doping. Dari gambar SEM, sampel tampak menunjukkan penurunan jumlah porositasnya. Sampel yang disinter 750°C merupakan temperatur optimal dalam  mensintesis superkonduktor MgB2   yang  didoping nikel  karena  memiliki  Tc  onset tertinggi sebesar 42,53 K dan porositas terendah pada pendopingan nikel sebesar 20 persen berat yaitu sebesar 13,5% porositas.
Effect of Post-Annealing Treatment on the Morphological and Optical Properties of ZnO Thin Film Fabricated by Spraying Deposition Method Darsono, Teguh; Muqoyyanah, Muqoyyanah; Sulhadi, Sulhadi; Wahyuni, Siti; Marwoto, Putut; Sugianto, Sugianto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.46927

Abstract

This work investigated the effect of post-annealing treatment on the fabrication of zinc oxide (ZnO) thin film by spraying deposition method. Based on SEM analysis, the annealed ZnO thin film at 400˚C presented better uniformity as compared to the non-annealed film. Further measurement by UV-Vis revealed that the lowest optical band gap energy (Eg) (3.22 eV) was achieved by 400˚C sample. These results confirmed that post-annealing treatment enhanced the optical and morphological properties of the fabricated ZnO thin film.
Analisis Karakteristik Sumur Bor Sebagai Sumber Air Tanah pada Daerah Batu Karang dan Tandus Simpen, I Nengah; Indriana, Rina Dwi; Koesuma, Sorja
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.47532

Abstract

Telah dilakukan penelitian tentang analisis karakteristik sumur bor. Penelitian ini merupakan suatu contoh penelitian tentang analisis karakteristik sumur bor di daerah batu karang dan tandus. Penelitian mengambil contoh di sumur RSPTN Universitas Udayana berlokasi di Jimbaran Badung Bali. Analisis yang dilakukan efisiensi sumur (Ew), faktor pengembangan sumur (Fd), perbaikan sumur (C) dan debit optimum (Qopt). Hasil penelitian didapatkan bahwa berdasarkan hasil pengukuran geolistrik, pada sumur bor memang ada akuifer. Sumur yang dibikin termasuk sumur yang efesien dengan tingkat efisiensi   84,71%. Ini berarti sangat efesien untuk pengambilan air. Sumur memiliki faktor pengembang 0,077864 hari/m3 Ini berarti sumur sangat baik untuk dikembangkan. Nilai C = 28994,2. Ini berarti apabila sumurnya ada kendala misalnya debitnya mengecil, maka sumur sulit dikembalikan menjadi seperti semula. Kapasitas jenis (Sc) rata-rata didapat: 0,0196908 m2/s, nilai ini lebih besar dari 0,005.  Ini berarti sumur memiliki produktifitas tinggi. Debit optimum (Qopt) = 0,00782 m3/s = 28,152 m3/jam. Drowdown optimum (Swopt) = 2,17 m. Nampak bahwa adanya keterbatasan kuantitas cadangan air. Uji sumur dengan debit konstan (0,00328 m3/s) telah dilakukan selama 7,5 jam ini berarti air sumur telah diambil 88,56 m3, tetapi sumur hanya mengalami penurunan permukaan air sebesar 22,2 cm secara konstan.
Interpretasi Tingkat Kekerasan Batuan Bawah Permukaan di Daerah Rawan Gempa Bumi Kota Bengkulu Hadi, Arif Ismul; Refrizon, Refrizon; Halauddin, Halauddin; Lidiawati, Liza; Edo, Paisal
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.46525

Abstract

Bengkulu City is located in the subduction zone of the Indo-Australian and Eurasian plates, so it is prone to earthquake. To anticipate the impact of earthquake, disaster mitigation can be carried out, one of which is a study of the level of rock hardness in the area. This study aims to determine the level of rock hardness based on seismic wave velocity in several rock formations and to determine which rock formations have the potential to cause vulnerability to earthquakes. Field data acquisition uses the seismic refraction method with time-term inversion technique. The data obtained in the field are processed to obtain a 2-D cross-section of the subsurface seismic wave velocity values. The study results show that the level of rock hardness depends on the type of rock formation. The Andesite Rock Formation Unit (Tpan) has the highest level of hardness, while the transitional area between the Alluvium Rock Formation Unit (Qa) and the Swamp Sedimentary Rock Formation Unit (Qs) has the lowest level of hardness.
Effects of Various Semiconducting Oxides as Photoanode and Counter Electrode for Dye Sensitized Solar Cell Application - A Review fatiatun, fatiatun; Bakar, Suryani Abu; Marwoto, Putut; Wibowo, Kusnanto Mukti; Muqoyyanah, Muqoyyanah; Firdaus, Firdaus
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 2 (2020): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v10i2.35195

Abstract

Dye sensitized solar cells (DSSCs) merupakan teknologi alternatif fotovoltaik yang menguntungkan. DSSCs menunjukkan harga yang murah, efisiensi yang tinggi dan proses pembuatan yang sederhana. Dalam aplikasi DSSCs, fotoanoda memiliki peranan yang penting untuk mengumpulkan elektron-elektron yang tereksitasi dan dye berfungsi untuk menyalurkan cahaya elektron-elektron ke transparent conducting film (TCF). Fotoanoda mempunyai band gap yang lebar pada semikonduktor logam oksida (contoh: zinc oxide (ZnO) dan titanium dioxide (TiO2)) yang dilapiskan pada TCF. Counter electrode (CE) adalah salah satu komponen yang penting dalam proses kerja DSSCs. CE digunakan sebagai mediator untuk membangkitkan sensitizer setelah masuknya elektron. Bahan CE yang ideal harus mempunyai resistansi yang rendah, biaya produksi yang murah, konduktivitas listrik yang tinggi, aktivitas elektrokatalitik yang bagus dan stabilitas yang tinggi. Bahan-bahan CE yang umum digunakan untuk aplikasi DSSCs yaitu seperti platina (Pt), karbon, carbon nanotubes (CNTs), grafin dan polimer konduktif. Review ini dikembangkan untuk mempelajari sifat-sifat bahan fotoanoda dan CE yang bagus untuk aplikasi DSSCs. Review ini juga digunakan untuk memberikan informasi untuk perkembangan bahan-bahan fotoanoda dan CE pada penelitian selanjutnya dalam aplikasi DSSCs. Dalam review ini, pengaruh bahan-bahan yang digunakan untuk fotoanoda dan CE dalam aplikasi DSSCs didiskusikan.
Identifikasi Karakteristik Reservoar Berdasarkan Data Akuistik Impedan dan Log Neutron Porositas Studi Kasus: Lapangan Boonsville, USA Sastrawan, Febrian Dedi; Rahman, Irsan Ar; Rahmania, Rahmania; Arisalwadi, Meidi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.40339

Abstract

Penelitian ini berjudul Identifikasi Karakteristik Reservoar Berdasarkan Data Akuistik Impedan Dan Log Neutron Porositas Studi Kasus: Lapangan Boonsville, USA. Penelitian ini dilatarbelakangi oleh perlunya menemukan lokasi prospek hidrokarbon dalam upaya menjaga ketahanan energi. Tujuan dari penelitian ini antara lain untuk mendapatkan nilai cutoff AI clean sand stone pada formasi Caddo dan Vineyard berdasarkan hasil crossplot log AI, density, dan gamma ray dan untuk menentukan lokasi/zona yang di prediksi mengandung hidrokarbon pada formasi Caddo dan Vineyard berdasarkan hasil analisis inversi AI, porositas, dan analisis kualitatif data log. Metode yang digunakan dalam penelitian ini adalah metode seismik inversi impedansi akustik (AI). Metode seismik inversi AI digunakan untuk mendapatkan parameter fisis batuan yaitu impedansi akustik sehingga persebaran zona reservoar tempat tersimpannya cadangan hidrokarbon dapat diprediksi. Hasil sebaran AI pada volume seismik dapat digunakan untuk memprediksi sebaran porositas. Prediksi sebaran porositas pada volume seismik didapat dari hasil regresi linier antara nilai AI dengan data log porositas pada sumur B Yates 18 D. Hasil penelitian didapatkan nilai cutoff AI clean sand stone pada formasi Caddo sebesar 38000 - 55500 (ft/s) (gr/cc) dan pada formasi Vineyard sebesar 33000 - 37500 (ft/s) (gr/cc). Pada Top Caddo memiliki 4 zona yang diprediksi mengandung gas dengan reservoar berupa clean sand stone. Pada Top Vineyard ditemukan 3 zona yang diprediksi juga mengandung gas dengan reservoar berupa shaly sand.
Landslide Zone Investigation by Determining Cracks and Cracks Compressive Strength Test in Waru District, Pamekasan Regency ariyanto, sandy vikki; Joni, Idon
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.45641

Abstract

Landslide zone investigation has been conducted using geoelectricity to determine the number of cracks and using a compressive strength test to determine compressive strength cracks. The result of this research is that the rock layers of Waru District consist of soil layers resulting from the weathering of quartz rock into quartz sandstone. This quartz sandstone lies on top of a more solid rock layer. The type of landslide that is formed in the Waru sub-district is translational. This type of landslide is caused by water entering the lower layer, causing landslides and the number of cracks that trigger landslides. The results of the low compressive strength test resulted in landslides. This result was due to a decrease in the number of pores filled with water and an increase in the pores that were not filled with water. This occurs due to the presence of water in the cracks, the number of cracks cavities, and the density of the cracks which results in reduced adhesion between the cracks holding layers.
Pengaruh Temperatur Rendah pada Sifat Bending dari Pipa Komposit Epoxy dengan Penguatan Serat Jute Pramadyanti, I.A.N; Adi Atmika, I.K; Ary Subagia, I.D.G
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 2 (2021): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i2.51243

Abstract

The experiment about the bending behavior of pipe composite based under the low-temperature treatment was carried out. As for the background of this research is that composite material become a suitable design with user need and it has behavior to substitute metal in engineering products. The research aims to investigate the effect of low temperature against to bending strength behavior of pipe from composite epoxy with jute fiber reinforcement. The low-temperature treatment was applied through an immersion process in dry ice as long as 60 minutes to produces a temperature of -33oC. The pipe composite was manufactured in lamination three layers of jute fabric using the vacuum injection molding process (VRTM). Then, the strength of the composite pipe was tested on the three-point bending method according to the ASTM D 790 standard. The testing results show that composite pipe with low-temperature treatment has a flexural strength average of about 76.559 MPa. Meanwhile, the compo-site pipe without treatment shows the strength of flexural average of about 52.435 MPa. They have the strength of flexural inclination is an average of 68%. In addition, the failures of composite in three-point bending test shows a shrank mode on the compression side and flat tearing at tension side due to the material becomes brittle. The conclusion that low-temperature treatment has an effective influence on the pipe composite mechanical properties.
Kajian Energi Gelombang Laut Di Daerah Abrasi Serangai, Bengkulu Utara Melalui Pengamatan Tinggi Gelombang Laut Lubis, Ashar Muda; Putri, Yosi Apriani; Saputra, Rio; Sinaga, Juhendi; Hasanudin, M; Kusmanto, Edi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 2 (2021): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i2.49914

Abstract

The Serangai area, Batik Nau District, North Bengkulu has the highest average abrasion speed of 20 m/year. The abrasion could cause the coastal area to erode the coastline till several tens of meters. The purpose of this study was to determine the height of the ocean waves and to determine the energy of the ocean waves that has the potential to accelerate the abrasion process in the Serangai area. The research was carried out on November 5-7, 2018 in the Serangai beach area at a depth of 5 m using SBE 26 Plus Seagauge Wave equipment. The results showed that the observed wave height was between 0.8-1.6 m with a significant wave height (Hs) of 1.38 m. In addition, the wave period ranges from 5-11 s with a significant wave period (Ts) of 8.2 s. The result also shows that the maximum wave height of 1.6 m occurred on November 7, 2018 with maximum wave energy of 1800 J/m2. This result can perhaps accelerate the abrasion process in the Serangai area. It can also be seen that the wave height in the Serangai region is higher than in several other areas in Indonesia. However, it is necessary to continue observing the wave height to see the seasonal variations in sea wave height in Serangai area.
Analisis Tingkat Kegempaan Wilayah Jawa Timur berbasis Distribusi Spasial dan Temporal Magnitude Of Completeness (Mc), A-Value Dan B-Value Chasanah, Uswatun; Handoyo, Eko
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 2 (2021): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i2.45984

Abstract

The Space and temporal distribution of the seismicity parameters consisting of magnitude of completeness (Mc), a-value, and b-value were estimated for the East Java, Indonesia using the International Seismological Center (ISC) earthquake catalogue. The main purposes of this research were to determine the parameters of the seismicity and its spatial temporal distribution so that early detection and warning systems in the East Java run optimally. All estimated parameters were analyzed based on an earthquake catalogue during 1980-2020 by applying The Maximum Curvature (MaxC) method. The MaxC method enumerate the highest value of the first subordinate of the cumulative Frequency Magnitude Distribution (FMD) graph. The value of the magnitude of completeness, which was estimated on this study as result Mc 3,4 – 4,8; a-value 5,560 - 8,244; and b-value (0,73 – 0,82 ± 0.13). The lower b-value (0,73 ± 0.13) was obtained for the southern part of the East Java. This area is indicated to have high seismic moment release and rock stress level accumulation. Understanding and clarifying the relation between seismicity parameters and structure of tectonic framework can guidance us to estimate seismic risk for earthquake hazard mitigation in the East Java.

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