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INDONESIA
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Published by Universitas Negeri Jakarta
ISSN : 23021829     EISSN : 24769398     DOI : https://doi.org/10.21009/03
Core Subject : Science, Education, Engineering,
Electrical & Electronics Engineering Energy Physics Other
Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 976 Documents
 38   39   40   41   42 
PEMBUATAN SERBUK TEMBAGA BERUKURAN DI BAWAH 1 MIKRON DENGAN METODE ELEKTROLISIS Damisih Damisih; Riastuti Fidyaningsih; Retna Deca Pravitasari; Agustanhakri Agustanhakri; Lia Aprilia; Henny Purwati
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Serbuk tembaga murni banyak dipergunakan untuk berbagai aplikasi karena memiliki sifat konduktifitas listrik dan termal yang sangat baik. Pada penelitian ini, dilakukan pembuatan serbuk tembaga dari plat tembaga dengan kemurnian Cu sebesar 99.9% menggunakan metode elektrolisis. Elektroda plat tembaga berukuran 8 x 15 cm dipergunakan sebagai anoda dan plat stainless steel 316 sebagai katoda. Proses elektrolisis menggunakan larutan CuSO4 dan H2SO4 sebagai elektrolit. Dengan variasi arus listrik, didapatkan semakin banyak serbuk tembaga yang terdeposisi dengan semakin tingginya arus listrik yang diberikan. Kuat arus divariasikan antara 5 sampai dengan 30 Ampere untuk waktu deposisi selama 10 menit. Terdapat perbedaan yang cukup signifikan antara berat teoritis hasil perhitungan dengan berat aktual dari hasil eksperimen. Hal ini kemungkinan disebabkan karena kurang efisiennya proses elektrolisis yang dilakukan. Efisiensi arus yang diperoleh hanya berkisar antara 49-63%. Serbuk tembaga hasil elektrolisis kemudian dilakukan karakterisasi dengan XRF (X-Ray Fluoroscence) untuk mengetahui tingkat kemurnian dan PSA (Particle Size Analyzer) untuk mengetahui ukuran partikel. Dari hasil pengujian XRF, didapatkan kemurnian serbuk rata-rata sebesar 88.52%. Sedangkan hasil uji PSA menunjukkan bahwa ukuran rata-rata serbuk tembaga yang didapatkan adalah sebesar 0.851 µm. Keywords: electrolysis, copper powder, current density, efficiency, particle size, purity.
KARAKTERISASI OPTIK DAN SIFAT LISTRIK FILM LiTaO3 PADA VARIASI SUHU ANNEALING Ira Ukhtianingsih; Yulia Sani; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

LiTaO3 thin films has been grown upper side on p-type Si (100) substrates using Chemical Solution Deposition (CSD) methods followed by spin coating its speed 3000 rpm with dropped for 30 seconds in solubility 1 M. Thin films was annealed at 550 ËšC, 575 ËšC, 600 ËšC and 625 ËšC with increasing degree of annealed 1.67 ËšC/minutes. This conductivity values is semiconductor and conductivity. It might be effect the result of optical test showed LiTaO3 thin films could absorb in UV wavelength. It is convincing that LiTaO3 promise to be used for infrared sensor. Keywords: conductive, LiTaO3, optical, p-type silicon, semiconductor.
Rancang Bangun Generator Fluks Aksial Putaran Rendah Magnet Permanen Jenis Neodymium (NdFeB) Untuk Turbin Angin Sumbu Vertikal Tipe Double-Stage Savonius Mohammad Fiky Alqodri; Cecep E. Rustana; Hadi Nasbey
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Axial flux generator is a simple generator that is able to work at low rpm. This generator consists of a stator and rotor parts, parts stator consists of a coil of copper wire arranged to form three-phase, and part of the rotor consists of a permanent magnet type Neodymium (NdFeB) permanent magnet has a magnetization value (remanent) large enough so that it can produce magnetic flux is big enough. The axial flux generator is suitable for wind turbines savonius which can rotate at low wind speeds. The design of the generator and installation of the turbines is needed to minimize costs, increase torque, moving on some variation of wind speed is low. To increase the power output of the system, then the doubling generator that will be installed on the turbine. Expected by installing generators axial flux permanent magnet type NdFeB and increasing the number of generators in the turbine, can further improve the efficiency of the system. at low wind speed produce voltage and current 0,079 V, 0,079 A at 17,2 rpm and 2 V, 0,354 A at 500 rpm. Keywords: axial flux generator, a permanent magnet. efficiency of the system.
DESAIN SISTEM ELEKTRODEPOSISI UNTUK PROSES PELAPISAN NITIALN PADA SUBSTRAT TUNGSTEN KARBIDA Maulidatul Khasanah; Esmar Budi; Riser Fahdiran
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Electrodeposition of Ni-based composite films on metal is subjected to improve its wear and corrosion resistances. Electrodeposited Ni-TiAlN composite film on tungsten carbide rod as substrate has been investigated. Amount of 6 gr/liter of TiN and AlN powders were added into the electrolyte solution that consists of 0.38 M Ni2SO4.6H2O, 0.17 M NiCl2.6H2O, 0.49 M H3BO3 and 0,06 gr/l Sodium Dodecyl Sulfat (SDS). The experiment was performed with autonomous electrodeposition system because the device completed with potensiostat is expensive. Electrodeposiyon system is consist of power suplly, cable, resistor, electrolyte solution, and electrode. Electrodeposition was do in current of 3mA for about 25 minutes. The purpose of this experiment to find the composite film composition and morphology by using electrodeposition. Keywords: Ni-TiAlN composite film, electrodeposition, desain of electrodeposition system.
VARIASI PARAMETER CHEMICAL ETCHING NaOH PADA SAMPEL INGOT SILIKON POLIKRISTAL TERHADAP PERMUKAAN MIKROSTRUKTUR Retna Deca Pravitasari; Rina Dewi Mayasari; Winda Rianti; Dwi Gustiono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Preparasi sampel merupakan tahapan awal yang perlu dilakukan untuk proses karakterisasi morfologi ingot silicon polikristal. Salah satu tahapan proses preparasi yaitu proses chemical etching yang bertujuan untuk mengkorosikan permukaan sampel dengan mengikis batas butir sehingga dapat dilihat strukturmikronya seperti fasa, batas butir, dan dislokasi. Jenis-jenis chemical etsa yang dapat digunakan untuk karakterisasi struktur mikro dari ingot silikon polikristal diantaranya dapat menggunakan larutan HF, NaOH, secco, ataupun sopori. Berdasarkan literatur, untuk melakukan karakterisasi permukaan struktur mikro dapat menggunakan larutan NaOH. Penelitian ini mengkaji tentang pengamatan struktur mikro yang dipengaruhi oleh variasi parameter larutan NaOH sebagai bahan etsa. Variasi yang digunakan adalah konsentrasi larutan sebanyak 20% dan 10%, waktu proses etsa selama 1, 2, dan 3 menit. Tiap variasinya dilakukan proses etsa sebanyak dua kali dengan posisi sampel ingot secara vertical dan horizontal. Hasil penelitian yang diperoleh menunjukan bahwa dengan jumlah konsentrasi yang tinggi, maka waktu etsa akan semakin pendek. Variasi optimasi untuk menghasilkan struktur mikro yang terbaik yaitu dengan variasi konsentrasi larutan NaOH sebanyak 20%, waktu etsa selama 2 menit, dan posisi sampel ingot secara horizontal. Keywords: Microstructure, Ingot, Polycrystalline, Silicon, Etching, NaOH.
PENGARUH PENAMBAHAN VANADIUM OKSIDA (V2O5) TERHADAP STRUKTUR KRISTAL Ba 0.9 Ca0.1TiO3 Rizky N; Suasmoro Suasmoro
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Barium calsium titanate (BCT) is one of perovskite’s crystal structure and has polimorfism to temperature. Composition of BCT was synthesized via oxalate coprecipitation precursor. The powder was V5+ doped by 0; 0.5 and 1 mole %. It was analyzed by thermal analysis. Single phase of BCT was formed at calcination temperature 7000C for 2 hours. The powder was compacted and pelleted. To decrease porous sample sintered at temperature 13000C for 2 hours. Vanadium doped can decrease temperature of sinter to be 12500C. The influences of dopant on samples were analyzed by XRD. Tetragonallity of sample that undoped is 1.0031 and doped V5+ 0.5 % is 1.0026 and doped V5+ 1 % is 1.0019. Characterization on crystal structure show that V5+ subtituted into Ti4+ sites to form single phase of BCT. Keywords: BCT, copresipitation, vanadium, single phase.
PENGARUH KEMURNIAN BAHAN BAKU TERHADAP SINTESA LIBOB UNTUK APLIKASI ELEKTROLIT BATERAI LITIUM-ION Titik Lestariningsih; Bambang Prihandoko; A. Subhan; Christin Rina Ratri
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Lithium bis (oxalato) borate (LIBOB) was proposed as a promising electrolyte for lithium-ion battery. Many research reported that LIBOB synthesis have been successfully performed using analytical grade materials, therefore this research was aimed to substitute them with technical grade materials as well as mixing of technical grade and analytical grade materials, using similar synthesis method. The resulting synthesized LiBOB in a form of white powder was then characterized using XRD and FTIR to identify formed phases and functional groups. Cyclic voltammetry and charge-discharge test was performed to observe LiBOB performance as electrolyte in battery cell. It was shown from the test results that LiBOB salt synthesized from all technical grade materials exhibited LiBOB and LiBOB hydrate phase with 72% purity. Meanwhile, LiBOB salt synthesized from partly analytical grade materials exhibited LiBOB and LiBOB hydrate phase with 99% purity. It was also observed from cyclic voltammetry and charge-discharge test that the reversibility during redox reaction occurring in the battery cell with LiBOB salt synthesized from all technical grade materials was better than LiBOB salt synthesized from partly analytical grade materials. First discharging capacity of LiBOB salt synthesized from all technical grade materials was lower than LiBOB salt synthesized from partly analytical grade materials, but it exhibited higher performance during subsequent discharge. Keywords: Lithium (bis)oxalato borate, XRD, FTIR, cyclic voltammetry, charge discharge, reversibility.
PENGUJIAN KOROSI UAP ASAM TEMPERATUR TINGGI LAPISAN ZINC PADA SUBSTRAT BAJA KARBON Muhammad Rizky; Eni Sugiarti M.Eng; Edi Sanjaya, M.Si
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Geothermal Power Plant is one of the solution of nowdays energy demand problem. But there are problems occur on the Geothermal Power Plant-it is the pipeing system made from carbon steel which is fragile to be corroded. Has been done corrosion test of the zinc-coated carbon steel-which is available in market-by hydrochloric acid (HCl) 37% in the room temperature (28 °C) and 300 °C. After the corrosion test, samples were measured their mass change to calculate the corrosion rate predictions, then characterized by X-Ray Diffractometer (XRD). The result showed that zinc is able to protect carbon steel substrate from corrosion on the room temperature, meanwhile on the high temperature it can not protect carbon steel substrate from corrosion. Keywords: Geothermal Power Plant, Corrosion, Zinc, Temperature.
Analisis Difraksi Nanopartikel Fe3O4 Metode Kopresipitasi Dengan Polietilen Glikol 6000 Nurdin Bukit; Erna Frida; Pintor Simamora; Tresia Sinaga
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

This study aimed to obtain a particle size-based nano Fe3O4 iron sand, determine the effect of Polyethylene Glycol (PEG) -6000 with a ratio of 1: 3.1: 4,1,5 and without PEG against Fe3O4.Nanopartikel Fe3O4 nano particle size produced from iron sand which in synthetic by using coprecipitation method. Synthetic done by mixing natural sand with HCl as solvent and NH4OH as a precipitant, as templates are added PEG-6000 .Then, characterized by using X-Ray Diffractometer (XRD) to determine the crystal size and content of the phase. From the test results of X-Ray Diffractometer (XRD) to Fe3O4 without template PEG-6000 showed 29.08 nm crystal size, while Fe3O4 with the addition of PEG-6000 with a ratio of 1: 3; 1: 4; 1: 5 is: 14.90 nm; 22:16 nm; 33.11nm, the volume fraction of magnetite (Fe3O4) without PEG = 38.47%, with PEG 1: 3 = 48.39%; 1: 4 44.41%; 1: 5 = 53.20% Keywords: Nanoparticles Fe3O4, Polyethylene Glycol (PEG) -6000, Coprecipitation.
PENGEMBANGAN PEMBANGKIT LISTRIK TENAGA HIBRIDA MENGGUNAKAN TURBIN ANGIN SUMBU VERTIKAL TIPE DOUBLE-STAGE SAVONIUS DAN PANEL SURYA Shinta Wuriyandani; Cecep E Rustana; Hadi Nasbey
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

The research development of hybrid power plant using vertical axis wind turbine type double-stage savonius and solar panels has been done. Wind turbine have 2 blades of each stage and 1 piece of solar panels type ESM50W with spesification Vmp 17.2V, Imp 2.91A and maximum power of 50 W. This study aims to determine the output power produced by the solar panels, wind turbines and hybrid systems of both. Then the laboratory scale testing and data retrieval voltage, electrical currents, wind speed, turbine speed, and light intensity. Results showed that the test of the hybrid system affects the output power generated is equal to 46.03 W. Hybrid system of vertical axis wind turbine type double-stage savonius and solar panels are optimizing the potential of wind and solar energy as power generation hybrid system. Keywords: hybrid system, double-stage savonius, solar panels, power output, and efficiency.

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