INDONESIAN JOURNAL OF APPLIED 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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351 Documents
<![CDATA[Effect of Annealing Temperature On Iron Doped Titanium Dioxide Thin Films Prepared By Spin Coating Technique ]]>
Mukhtar Effendi; Bilalodin B
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1294
<![CDATA[Iron (Fe) doped titanium dioxide (TiO2) thin films have been successfully deposited by using spin coating technique. X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) were employed to characterize the microstructure and crystallite morphology of the films. It was indicated that the rutile crystal orientation appears due to increasing annealing temperature of the thin films. Furthermore, increasing annealing temperature of the thin films yielded an increasing of porosity value which is related to the application on gas sensor films.]]>
<![CDATA[Keterkaitan antara Pola Keterampilan Berpikir dengan Penguasaan Konsep Siswa pada Pembelajaran Strategi Metakognisi Berbantuan Thinking Map ]]>
<![CDATA[Dyne Rizki Puspitasari]]>;
<![CDATA[Lia Yuliati]]>;
<![CDATA[Sentot Kusairi]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v4i02.4978
<![CDATA[The purpose of this research is to analyze relationship between thinking skill pattern and students’ conceptual acquisition on metacognitive strategy assisted by thinking map. This mixed method research (embedded experimental design) was conducted at junior high school students and used conceptual acquisition test (posttest) and observation paper. The observation paper was used to analyze students’ thinking skill pattern by using thinking map. The result of this research showed that students who had high thinking skill pattern reachedhigh conceptual acquisition score too. This physics conceptual acquisition score showed students’ cognitive process grade. Conclusion of this research is the relationship between thinking skill pattern and junior high school students’ physics conceptual acquisition is exist.]]>
<![CDATA[Aplikasi Thermochromic Liquid Crystal Untuk Mengamati Perpindahan Kalor Pada Permukaan Logam ]]>
<![CDATA[Risti Suryantari]]>;
<![CDATA[Flaviana Flaviana]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v7i1.2292
<![CDATA[Tujuan penelitian ini adalah untuk mengamati peristiwa perpindahan kalor pada area permukaan logam yang bersentuhan dengan permukaan lembaran Thermochromic Liquid Crystal (TLC) R30C5W, melalui citra permukaan TLC selama proses pemanasan logam. Logam dipanaskan dengan pemanas celup, sehingga kalor akan terdistribusi hingga mencapai permukaan logam. Apabila permukaan logam tersebut bersentuhan dengan permukaan TLC, maka kalor akan berpindah dari permukaan logam ke permukaan TLC, dan ditunjukkan dengan terjadinya perubahan warna pada permukaan TLC. Citra asli yang diperoleh dalam bentuk RGB dikonversi menjadi HSV (hue, saturation, value), lalu diambil komponen hue saja, dan kemudian citra hue diproses menggunakan Matlab2014a untuk mendapatkan citra yang lebih baik. Hasil menunjukkan, seiring dengan meningkatnya temperatur permukaan logam, nilai mean hue semakin meningkat. Selain itu, nilai hue sepanjang garis tengah lingkaran pada permukaan TLC, cukup merata di bagian tengahnya (lingkaran dalam) namun semakin berkurang di tepinya (tepi kanan dan kiri), yang menunjukkan semakin jauh dari tepi permukaan logam maka energi kalornya semakin berkurang, karena terjadi perpindahan kalor pada tepi permukaan logam ke udara di sekitarnya. Kata kunci: Thermochromic Liquid Crystal (TLC), hue, perpindahan kalor.]]>
<![CDATA[Pemodelan Tsunami Sederhana dengan Menggunakan Persamaan Differensial Parsial ]]>
<![CDATA[Indriati Retno Palupi]]>;
<![CDATA[Wiji Raharjo]]>;
<![CDATA[Eko Wibowo]]>;
<![CDATA[Hafiz Hamdalah]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 1 (2018): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v8i1.16284
<![CDATA[One way to solve fluid dynamics problem is using partial differential equation. By using Taylor expansion, fluid dynamics can be applied simply. For the example is tsunami wave. It is include to hyperbolic partial differential equation, tsunami wave propagation can describe in space and time function by using Euler FTCS (Forward Time Central Space) formula.]]>
<![CDATA[Sintering Temperature Effect to the Synthesis of SiC Produced from Rice Husk ash and 2B Graphite Pencils ]]>
<![CDATA[Resky Irfanita]]>;
<![CDATA[Asnaeni Ansar]]>;
<![CDATA[Ayu Hardianti Pratiwi]]>;
<![CDATA[Jasruddin J]]>;
<![CDATA[Subaer S]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 01 (2015): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v5i01.258
<![CDATA[The objective of this study is to investigate the effect of sintering temperature on the synthesis of SiC produced from rice husk ash (RHA) and 2B graphite pencils. The SiC was synthesized by using solid state reaction method sintered at temperatures of 750°C, 1000°C and 1200°C for 26 hours, 11.5 hours and 11.5 hours, respectively. The quantity and crystallinity level of SiC phase were measured by means of Rigaku MiniFlexII X-Ray Diffraction (XRD). The microstructure of SiC was examined by using Tescan Vega3SB Scanning Electron Microscopy (SEM). The XRD results showed that the concentration (wt%) of SiC phase increases with the increasing of sintering temperature. SEM results showed that the crystallinity level of SiC crystal is improving as the sintering temperature increases]]>
<![CDATA[Development of Web Based Learning Material in Physics Subject for Kalor and Temperature Material ]]>
<![CDATA[Fatwa Aji Kurniawan]]>;
<![CDATA[Sulhadi S]]>;
<![CDATA[Agus Yulianto]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 02 (2015): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v5i02.292
<![CDATA[It has been done, the research which aims to develop a web-based teaching materials on the subjects of physics subject with subject mater of temperature and heat. This study using a modified model of the 4D development by eliminating the deployment phase. The validation of product development conducted by validator media experts and experts matter of physics, whereas small-scale trials conducted by physics teacher and 10 students. Validator review results stating that the quality of the product development were included in the category very well with the average percentage rating of 83.93%. The percentage value assigned by media expert by 75% in the good category and the percentage of the value provided by a matter expert 92.85% were in the very good category. Experiments by physics teacher to obtain result of equal to 94.44% were in the very good category and the average percentage of the test results by the students of 90.5% were in the very good category. The characteristics of the products developed include material composition using the curriculum in 2013, there was a recording facility and the results of evaluation of students' activities, there were feedback evaluation results were immediately known by the students and there were some links related to the material either youtube or other learning website.]]>
<![CDATA[Phase Composition and Magnetic Behaviour of Iron Sand from Syiah Kuala Beach Prepared by Mechanical Alloying ]]>
Zulkarnain Jalil; Eva Novita Sari; Ismail A B; Erfan Handoko
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v4i01.1180
<![CDATA[It has recently been investigated that ball milling can improve the magnetic properties of natural iron sand significantly. In this work, we present the phase composition and magnetic behavior of iron sand from Syiah Kuala Beach, Banda Aceh. Samples were prepared by mechanical alloying method using a Fritsch planetary ball mill for 20 hours. As the results, it was shown by XRD testthat Fe3O4 (magnetite) appears as the majority phase and the magnetic properties observation shown that the magnetization saturation (Ms) and remanent (Br) was decreased with the increasing of the coercivity (Hc).]]>
<![CDATA[Structural Analysis of Nanoceria Powder Precipitated in Different pH ]]>
Iis Nurhasanah; Nurul Wahyu Puspaningrum; Ida Nursati
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v3i02.1252
<![CDATA[Nanoceria has been proposed as inorganic material for sunscreen product because of its excellent UV absorpsition ability. Fine particle nanoceria and non-aglomeration determines comport and covering capability on human skin. Particle size and aglomeration could be controlled by parameters and medium synthesis. In the present work, nanoceria powders were synthesized using precipitation method in different pH of 7 and 10. Precipitation was cariedout in water/isopropanol mixed solvent. Cerium nitrate and amonium hydroxide was used as source of cerium and precipitation agent, respectively. Crystal structure of nanoceria was examined using x-ray diffraction (XRD). Scanning electron microscope (SEM) was used to observe morphology of nanoceria. Diffraction pattern analysis shows that the precipitates were single phase of nanoceria with cubic fluorite structure and lattice contants of 0.5429 nmand 0.5419 nm. Crystallite size and lattice strain were obtained from Williamson-Hall method. Precipitation in pH of 7 resulted in smaller crystallite size which correlated to the larger lattice strain and lattice constant. SEM image shows spherical morphology with less agglomeration occuring for nanoceria precipitated in pH 10.]]>
<![CDATA[Pembuatan Beton dengan Campuran Limbah Plastik dan Karakterisasinya ]]>
Yessi Rismayasari; Utari U; Usman Santosa
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1284
<![CDATA[Research on concrete containing plastic waste as an alternative polymer material has been conducted.It studied the concrete characteristic through compressive strength, impact testing, thermal conductivity, and density testing. Plastic waste used for concrete manufacture was black because it is strong but light. The goal of this research is to determine the characteristics value of concrete with and without plastic waste mixing. Concrete was mixed with the ratio of 1cement: 2 sands: 3 gravel and cement water factor of 0.5. The addition of plastic waste were 0%, 2%, 4%, 6%, 8%, 10% of cement mass.Specimens used was (15x15x15) cm cube with sides for compressive strength testing, (8x2x2) cm a block with the size of for impact testing, acylinder with a diameter of 4cm and thickness respectively 0.2 cm and 0.4 cm for thermal conductivity testing, and a sides (15 x 15 x 15)cm cube with for density testing. The diameter of plastic waste was 0.1 to 0.8 cm. The test was performed at 28 days of concrete age. The result showed that the addition of 4% of plastic waste recorded the best compressive strength, impact testing, and thermal conductivity. In this research, the density was of the range (16 ± 6)x 102 kg / m³up to(22 ± 4) x 102 kg / m³, compressive strength(21.8 ± 0.2) x 106 N / m² of the range (16 ± 0.1) x 106 N / m²to(21.8 ± 0.2) x 106 N / m², impact (8.7 ± 0.3)x 10-1Joule to the range (3.5 ± 0.3)x 10-1Joules up to (8.7 ± 0.3)x 10-1Joule and thermal conductivity (6.0 ± 0.5) x 10 -5 kcal / ms °C was (1.17 ± 0.5) x 10-5 kcal / ms °C to (6.0 ± 0.5) x 10 -5 kcal / ms °C.]]>
<![CDATA[Electromagnetics Properties of Non-Relativistic Deuteron in Ground State ]]>
R. Yosi Aprian Sari; Denny Darmawan
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v6i01.1802
<![CDATA[Proton-neutron interaction that makes up deuteron is a mixture state of ?13 dan ?13, which are each associated with a state ?=0, ?=1 and ?=2, ?=1. In the proton-neutron interaction, there are particle exchanges of medium range (1 fm≤?≤2 fm) i.e. scalar meson exchange and the long range (?>2 fm) i.e. one pion exchange. The electromagnetic properties of non-relativistic deuteron in the ground state can be found from the coupled differential equation, such as magnetic dipole moment, 〈?D〉=0.856521?? and electrical quadrupole moment, 〈?D〉=0.00291396 b.]]>
