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Indonesian Physical Review

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Published by Universitas Mataram

ISSN : 26151278 EISSN : 26147904 DOI : -

Core Subject : Science, Education,

Education Physics

Indonesian Physical Review is a peer review journal which is managed and published by Physics Departement, Faculty of Mathematics and Natural Sciences, Universitas Mataram. This journal is published periodically three times a year, in January, May and September. IPR is Open Accsess for all readers and includes research developments in physics both experimentally and analytically. Focus and scope include Theoritical Physics, Computation, Material sciences, Instrumentation, Biophysics, Geophysics, and Optics.

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Articles 88 Documents

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Cover, Editorial Board, Editor's Preface, and Table of Contents admin
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

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Electromagnetic Wave Equation on Differential Form Representation I Gusti Ngurah Yudi Handayana
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

One of the indispensable part of the theoretical physics interest is geometry differential. This one interest of physical area has been developed such as in electromagnetism. Maxwell's equations have been generalized in two covariant forms in differential form representation. A beautiful calculus vector in this representation, such as exterior derivative and Hodge star operator, lead this study. Electromagnetic wave equation has been expressed in differential form representation using Laplace-de Rham operator. Explicitly, wave equation shows the same form in Minkowski space-time like vector representation. This study is able to introduce us to learn application of differential form in physics.

TWO-PARTICLE THERMAL DENSITY MATRICES IN ONE DIMENSION USING FINITE DIFFERENCE TIME DOMAIN (FDTD) METHOD subhan subhan; I Wayan Sudiarta; Lily Maysari Angraini
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

A quantum system in the thermal equilibrium state is a mixed state consisting of statistical ensembles of several different quantum systems can be represented by a thermal density matrix. In this research, the thermal density matrix is calculated for two-particle system case non-interaction in one-dimensional square well and one-dimensional harmonic oscillator using finite difference time domain (FDTD) method. In addition, thermal density matrix calculations are also performed for the case of two particle systems interacting in a one-dimensional harmonic oscillator. We present results of probability densities, partition functions, and internal energies for three cases: two distinguishable particles, two fermions and two bosons. Validation of numerical results of thermal density matrix and probability density is accurate with analytical solutions. Then, the result of partition function and internal energy the system is strongly effect by temperature. At low temperatures, internal energy the system will lead to the lowest energy or ground state.

ANALISIS ANOMALI SUHU PERMUKAAN LAUT DAN PENGARUH FENOMENA EL-NINO DAN LA-NINA TERHADAP PERUBAHAN NILAI ANOMALI SUHU PERMUKAAN LAUT DI PERAIRAN NUSA TENGGARA BARAT TAHUN 2008 - 2017 syahrul jamili; I Wayan Sudiarta; Lily Maysari Angraini
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

Fenomena El-Nino dan La-Nina yang selanjutnya disebut ENSO sangat berdampak bagi cuaca dan iklim di Indonesia, salah satunya pada Perairan Nusa Tenggara Barat. Oleh karena itu, perlu dilakukan analisis anomali suhu permukaan laut di perairan Nusa Tenggara Barat. Data anomali SPL dan Indeks Nino 3.4 yang digunakan adalah data skunder dari stasiun ESRL-NOAA (Earth System Research-National Oceanic and Atmoshperic Administration) sedangkan data Indeks Osilasi Selatan dari stasiun AG-BOM (Australian Government-Bureau of Meteorology) dari tahun 2008 sampai dengan 2017. Penlitian ini bertujuan untuk mengetahui distribusi anomali SPL di perairan Nusa Tenggara Barat dari tahun 2008-2017 dan untuk mengetahui kondisi perairan NTB saat terjadi El-Nino dan La-Nina berdasarkan Indikator Indeks Nino 3.4 dan Indeks Osilasi Selatan (IOS) tahun 2008-2017. Berdasarkan Indikator Indeks Nino 3.4. Kejadian El-Nino level kuat diikuti dengan menurunnya nilai anomali SPL di Perairan Nusa Tenggara Barat sedangkan kejadian La-Nina level kuat diikuti dengan peningkatan anomali SPL perairan NTB. Untuk melihat hubungan antara data anomali SPL dengan Indeks Nino 3.4 dan IOS digunakan metode analisis regresi dan korelasi. Dari hasil penelitian ini didapatkan bahwa distribusi anomali SPL perairan Nusa Tenggara Barat pada tahun 2008 hingga 2017. Terlihat nilai anomali SPL bagian utara rata-rata cenderung meningkat dibandingkan dengan perairan Nusa Tenggara barat bagian selatan

MAKING PROTOTYPE DYE-SENSITIZED SOLAR CELLS (DSSC) BASED ON TiO2 NANOPORY USING EXTRACTION OF MANGOSTEEN PEEL (Garnicia mangostana) Hardani Hardani; Alpiana Hidayatullah; Lily Maysari Angraini
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

Dye-sensitized solar cell (DSSC) is one of the photochemical electrical cells consisting of a photoelectrode, dye, electrolyte, and counter electrode. The manufacture of prototype Dye-sensitized solar cell (DSSC) utilizes carotene from the dye extract of mangosteen peel pigment (Garnicia mangostana). This study aims to create a Dye-sensitized solar cell (DSSC) and know the efficiency it produces. This Dye-sensitized solar cell (DSSC) consists of a pair of FTO (Flour-doped in oxide) glass intercepts facing each other. The glass acts as an electrode and counter electrode and separated by a redox electrolyte (I- / I3-), arranged to flank each other to form a wafer. In the electrode, is deposited a porous nanocrystalline TiO2 layer, as well as dye extract of mangosteen peel pigment (Garnicia mangostana). While on the counter electrode coated with a layer of platinum. This article presents some experimental data on absorbance properties and the conductivity of dye extract of mangosteen peel pigment (Garnicia mangostana) as an application in DSSC. Absorbance test using Spectrophotometer UV Visible 1601 PC and electrical properties test using Elkahfi 100 / Meter I-V. DSSC fabrication has been done using dye extract of mangosteen peel pigment (Garnicia mangostana) with coating spin coating technique. The results showed that the dye extract of mangosteen peel pigment (Garnicia mangostana) had an absorbance spectrum of 380-520 nm range. From the test results using AM 1.5G solar simulator (100 mW / cm2), it was found that the volume of TiO2 precursors affected the performance of DSSC solar cells and the overall conversion efficiency was 0.092%.

EKSTRAK GETAH PEPAYA (Carica Papaya) DENGAN PENAMBAHAN Cu SEBAGAI DYE SENSITIZER SOLAR CELL (DSSC) Dian Wijaya Kurniawidi; Siti Alaa; Susi Rahayu
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

Indonesia is a biodiversity country. Abundance of biological resources may encourage researchers to optimize its use. As an example papaya trees are utilized as raw material for thin films. Sap of papaya latex is doppinged with Cu. This composition is depositioned on top of FTO by spin coating method. The addition of Cu dopping aims to control the rate of crystallinity of the material. This research will add Cu between 10% and 50% solution. Based on FTIR test results, flavonoid compounds might be obtained with O-H group, some aromatic rings C = C and C = O, aliphatic compounds C-H and -CO. Flavonoid compounds are potentially utilized as dye for DSSC. The thickness of dye produced by doping Cu 10% is approximately (0.5-2) μm. Furthermore, dopping Cu from 20% to 40% can produce thickness around 10-50 nm. Meanwhile, the results of the XRD test show an effective Cu between 10% to 40%.

THE ANALYSIS OF ATTENUATION COEFFICIENT AND ACOUSTIC IMPEDANCE OF CEILING PANEL USING IMPEDANCE CHAMBER METHOD Satriogi Putramulyo; Rahadi Wirawan; Siti Alaa; Nurul Qomariyah
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

The purposed of this research is to determine the attenuation coefficient and acoustic impedance of ceiling panel like plywood, calsiboard and bamboo woven. The influence thickness, paint coated, air cavity increment of the attenuation coefficient and acoustic impedance of these ceiling panel are also mesured. The impedance chamber method with range of frequency 100 Hz – 5000 Hz are used here. The result shows that the average of attenuation coefficient for plywood panel, calsiboard panel and bamboo woven panel are 0,37 Npmm-1, 0,62 Npmm-1 and 0,28 Npmm-1 respectively. In addition, the acoustic impedance of these panel is 1,33 x 106 kgm-2s-1, 3,74 x 106 kgm-2s-1 and 1,15 x 106 kgm-2s-1. The attenuation coefficient is decreased with the increasing thickness of the panel and the same trend is founded of the acoustic impedance. Meanwhile, the paint coated can increase attenuation coefficient and acoustic impedance. For the air cavity increment ceiling panel, the attenuation coefficient and acoustic impedance are less than the solid panel.

ZONASI POTENSI RAWAN GERAKAN TANAH DI KECAMATAN WATES KABUPATEN BLITAR DENGAN METODE STORIE Dina Asmaul Chusniyah; Didik Yudianto
Indonesian Physical Review Vol 2, No 1 (2019)
Publisher : Universitas Mataram

Lokasi Kecamatan Wates terletak di Kabupaten Blitar bagian Selatan yang memiliki satuan morfologi perbukitan sedimen dengan bukit bergelombang dan kemiringan landai yaitu antara 10-30% yang membentuk punggung bukit tidak teratur.Metode desk study merupakan suatu metode yang dilakukan untuk mengumpulkan data maupun informasi secara sekunder. Pada data sekunder dilakukan analisis tumpang susun (overlay) dengan Sistem Informasi Geografis (SIG).Hasil penelitian ini berupa peta rawan gerakan tanah, peta ini diperoleh dari overlay antara beberapa peta, yaitu peta geologi, peta curah hujan, peta topografi, peta kemiringan lereng, dan peta pengembangan lahan. Dari hasil overlay tersebut diperoleh proses penggabungan beberapa peta tematik dengan area yang sama dan menghamparkan satu dengan yang lain untuk membentuk satu layer peta baru yang memberikan informasi mengenai beberapa lereng, mulai dari lereng 15%-20%hingga lereng >40%, dengan curah hujan antara 1500-2000 mm/tahun hingga >2000 mm/tahun. Daerah tersebut di kelompokkan menjadi zona gerakan tanah rendah, sedang dan tinggi. Warna hasil overlay peta ditentukan oleh besar intensitas pixel penyusunnya. Warna ini diperoleh dari besar kecilnya intensitas cahaya yang ditangkap oleh sensor. Karena intensitas cahaya di alam (gradasi intensitas analog) tidak terbatas dan belum ada alat yang mampu menangkap seluruh gradasi warna sehingga dilakukan proses kuantisasi yaitu suatu proses transformasi intensitas analog yang bersifat kontinu ke daerah yang memiliki intensitas diskrit.

MODEL PREDIKSI CURAH HUJAN HARIAN MENGGUNAKAN JARINGAN SYARAF TIRUAN BACKPROPAGATION komang nonik afsari dewi; Syamsul Bahri; Irwansyah Irwansyah
Indonesian Physical Review Vol 2, No 1 (2019)
Publisher : Universitas Mataram

Weather is an atmospheric condition that occurs in a narrow area with a short space of time. Observations of weather elements are needed in everyday life. for it can affect the safety of air transportation. The weather element that is often predicted is rainfall. Rainfall in tropical regions such as Indonesia is one of the parameters that can describe weather conditions in general. The method used to predict rainfall was artificial neural network with backpropagation algorithm. The purpose of this paper is to apply the model of artificial neural networks with backpropagation algorithm to predict daily rainfall and to determine prediction accuracy based on Mean Square Error (MSE). The network used has 3 layers namely input layer. hidden layer. and output layer with 7 input neurons, 12 hidden neurons, and 1 output neuron. The activation function used were bipolar sigmoid function and linear function. Based on data analysis carried out using network architecture and parameters that had been determined with 578 data at the training stage. MSE values of 25,0639 was obtained and based on the results of the network training process. the prediction was quite well. In the testing stage. the model developed using data as much as 145. MSE value of 405,1994 was obtained. MSE obtained during the testing stage was greater than that of obtained during the training process due to several factors. one of them is because the weather is volatile so the weather conditions vary every year and global warming causes weather conditions to be unpredictable.

ANALISIS DAN PEMODELAN INVERSI STRUKTUR BAWAH PERMUKAAN BERDASARKAN ANOMALI GRAVITASI PULAU LOMBOK Hiden Hiden; Kirbani SB; Wiwit S; Danang SH
Indonesian Physical Review Vol 2, No 1 (2019)
Publisher : Universitas Mataram

Sistem patahan, intrusi, dan daerah pengangkatan banyak terdapat di Pulau Lombok, tetapi secara visual tidak tampak di permukaan. Tujuan dari penelitian ini adalah menganalisis anomali gravitasi dan memodelkan struktur geologi bawah permukaan berdasarkan anomali gravitasi. Hasil penelitian menunjukkan korelasi yang baik antara karakteristik anomali Bouguer maupun anomali residual terhadap struktur yang telah diketahui di Pulau Lombok. Umumnya, anomali tinggi baik anomali Bouguer maupun anomali residu tinggi berkorelasi baik dengan singkapan zona Solo di sebelah barat, kerak magmatik tebal di sebelah timur dan area pengangkatan di selatan Lombok. Berdasarkan anomali residu tinngi, terdapat beberapa sesar lokal teridentifikasi dengan sangat jelas. Sementara anomali residu rendah tampak pada wilayah Kompleks Gunung Rinjani. Perkiraan sesar yang membelah dua Pulau Lombok (sesar Lombok: FL) tidak terbukti keberadaannya baik dengan anomali Bouguer, anomali residu maupun dengan pemodelan inversi 2D. Interpretasi hasil pemodelan inversi 2D menunjukan variasi batuan dengan densitas (2,625 – 2,858) kg/m3 yang terdistribusi secara spasial pada kedalaman (1,31 – 4,66) km.

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Location Kota mataram, Nusa tenggara barat INDONESIA

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Contact Name
Indonesian Physical Review

Contact Email
ipr.journal@unram.ac.id

Phone
-

Journal Mail Official
lilyangraini@unram.ac.id

Editorial Address
-

Location
Kota mataram,

Nusa tenggara barat

INDONESIA