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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 267 Documents
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Pemanfaatan Antosianin dari Ekstrak Kol Merah (Brassica oleracea var) sebagai Pewarna Dye-Sensitized Solar Cells (DSSC) Dinasti Dwi Pratiwi; Risa Suryana; Fahru Nuryoshid
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1790

Abstract

A prototype of Dye-Sensitized Solar Cells (DSSC) utilizing anthocyanin extract from red cabbage was fabricated. This study aims to determine the wavelength absorption of dye contributed in highest efficiency. The sandwich structure of DSSC consists of TiO2 as working electrode, carbon layer as counter electrode, anthocyanin dye as photosensitizer, and electrolyte as electron transfer media. The absorbance of dye was characterized using UV-Vis spectrophotometer, the efficiency of DSSC was calculated using I-V Meter Keithley, and the quantum efficiency was characterized using IPCE Measurement System. The absorption of dye anthocyanin of red cabbage is 450 nm–580 nm wavelengths, I-V characteristic curves resulted efficiency of 0,029%, and IPCE characteristic resulted highest efficiency at wavelength of 420 nm with efficiency of 0,099%.
Sifat Mekanik Gigi Tiruan Akrilik dengan Penguat Serat Gelas Zuriah Sitorus; Awan Maghfirah; Yoshephin Romania; Syahrul Humaidi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4988

Abstract

The research is aimed to investigate the possibility of acrylic-reinforced glass fibre as a denture. Short glass fibre was made by variation of 4mm, 6 mm and 8mm. The results showed a good adhesion between glass fibre and acrylic resin with an optimum composition of the denture (acrylic: oil : glass fibre = 10 gr : 4.5 mL : 0.13 gr) was achieved. The density test was conducted by using Archimedes’ method, whereas compressive strength and tensile strength by using Universal Testing Machine (UTM). The results showed that glass fibre can be used to enhance the mechanical properties of acrylic resin. The optimum composition was achieved when 6 mm fibre had been added-in with a density of 1.2256 gr/cm3. A compressive strength of 76.623 MPa and a tensile strength of 71.207 MPa were recorded, these values can be applied as a denture.
Penentuan Tingkat Kerawanan Gempa Bumi Menggunakan Metode Refraksi Mikrotremor (ReMi) di Kota Surakarta Sari Pratiwi; Budi Legowo; Sorja Koesuma
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i1.4884

Abstract

Berdasarkan informasi dari letak geografis dan struktur geologi, Kota Surakarta termasuk wilayah yang mengalami dampak gempa bumi[1]. Salah satu upaya untuk mengurangi dampak dari gempa bumi yaitu melakukan analisa tingkat bahaya seismik sebagai salah satu usaha mitigasi bencana gempa dengan metode mikrotremor yang dapat diketahui nilai amplifikasi dan periode dominan.  Pada penelitian telah dilakukan di Kota Surakarta menggunakan P.A.S.I Seismograph Mod. 16S24-P, 3D Borehole Geophone Model GFA 60/100. Interval pada setiap lokasi yaitu 1-3 km dengan 12 lokasi penelitian. Diperlukan waktu sekitar 20 menit dengan tiga kali pengulangan untuk perekaman data disetiap titik. Pengolahan data mikrotremor menggunakan software Geopsy dan Surfer 11. Amplifikasi rendah pada zona 1 merupakan zona yang cukup aman terhadap bahaya gempa bumi. Zona 1 berada di wilayah Mojo, Moewardi, Sangkrah, Dawung, SMPN 10, Mojosongo, Lapangan Banyuanyar, Laweyan, Karang Asem danTipes dengan amplifikasi 0,807314 sampai dengan 2,60402. Lokasi pada jenis I termasuk wilayah yang cukup aman terhadap gempa bumi karena memiliki ketebalan sedimen yang tipis daripada jenis II. Jenis I berada di wilayah Mojo, Moewardi, Sangkrah, SMPN 10, Manahan, Mojosongo, Lapangan Banyuanyar, Laweyan, Karang Asem, Jebres dan Tipes dengan  periode dominan antara 0,058978s sampai dengan 0,231411s. Sebaran tingkat kerawanan gempa bumi di kota Surakarta dapat dilihat pada peta zonasi berdasarkan nilai A0 dan T0 yang kemudian diklasifikasikan hasilnya pada zona atau jenis tertentu sehingga diperoleh informasi berupa tingkat kerawanan dan juga jenis batuan yang tersusun dibawah permukaan tanah berdasarkan parameter yang diukur.
Front Matter Vol 06 No 01 2017 Mohtar Yunianto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i1.19968

Abstract

Linearization of Hue Value on The Surface of Thermochromic Liquid Crystal With Variation of Temperature Risti Suryantari; Flaviana F
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 01 (2015): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v5i01.268

Abstract

This research has observed a linear relation of hue value on the surface of a Thermochromic Liquid Crystal (TLC), with variation of temperature, based on statistic value of hue image.  In this research we use ample of TLC with temperature range 250-300 C and 300-350 C. The original image in RGB format is converted to HSV (hue, saturation, value) and by taking hue without saturation and value, then the hue image is processed using Matlab2013a based on a mathematical morphology with opening and closing for the main process to get better images. The final image of each temperature variation can be distinguished based on the statistic value of each image. The value of max and mean hue increases by increasing temperature for each sample. Both samples tend to have the same linearization based on its mean value.
Charge Carrier Mobility Analysis of Chlorophyll Thin Film Spirulina sp Produced by Spin Coating Muhamad Mustain; Defi Sulistyana; Utari U; Budi Purnama
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1158

Abstract

Analysis of carrier charge mobility of Spirulina sp thin films produced by spin coating havebeen conducted. Measurement of carrier charge mobility has been done by I-V method.Mobility of carrier charge decreased with an increased of the layer number. It indicates that athreshold value of carrier charge of population number over flow on conduction band.
Kajian Pengaruh Penambahan Nanopartikel Perak (AgNPs) Terhadap Respon Instrumen Sensing Berbasis Surface Plasmon Resonance (SPR) Tyas Arifani; Kamsul Abraha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1214

Abstract

Theoretical studies have been done related to the phenomenon of surface plasmon resonance (SPR) on the system with addition of silver nanoparticles (AgNPs) that was modeled as a sensing instrument. Model is built with AgNPs placed as an additional layer over the conventional SPR system. Quantitative analysis on the model will provide a response in the form of reflectance spectrum as a function of incident angle that showed SPR angle ( SPR ) point and the attenuation. To know how the AgNPs in various sizes affect the resonance coupling, it will be calculated the dispersion relation curves obtained as the solution of Maxwell’s equations. Coupling between surface plasmon wave and evanescent wave will provide the resonance angle on the intersection of the two curves. Computational analysis of ATR method, demonstrate how the addition of AgNPs in sensing instrument configuration will improve performance of such instruments, visualized by SPR angle shift.
Effect of Annealing Temperature On Iron Doped Titanium Dioxide Thin Films Prepared By Spin Coating Technique Mukhtar Effendi; Bilalodin B
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v2i02.1294

Abstract

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.
Keterkaitan antara Pola Keterampilan Berpikir dengan Penguasaan Konsep Siswa pada Pembelajaran Strategi Metakognisi Berbantuan Thinking Map Dyne Rizki Puspitasari; Lia Yuliati; Sentot Kusairi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4978

Abstract

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.
Aplikasi Thermochromic Liquid Crystal Untuk Mengamati Perpindahan Kalor Pada Permukaan Logam Risti Suryantari; Flaviana Flaviana
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): IJAP Volume 07 ISSUE 01 YEAR 2017
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i1.2292

Abstract

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.

Page 10 of 27 | Total Record : 267

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