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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
 91   92   93   94   95 
EFFECT OF HIGH CURRENT DENSITY ON THE MORPHOLOGY OF NI/TIN/ALN COMPOSITE LAYERS USING PULSE ELECTRODEPOSITION METHOD: PENGARUH RAPAT ARUS TINGGI PADA MORFOLOGI LAPISAN KOMPOSIT NI/TIN/ALN DENGAN METODE ELEKTRODEPOSISI ARUS PULSA Dhea Laila Putri Afifah; Esmar Budi; Teguh Budi Prayitno
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA26

Abstract

Pulse current for electrodeposition has the advantage of forming smaller grain sizes, porosity and homogeneity, thus having an impact on improving material properties. In this research, the composition of the electrolyte solution that will be used are NiCl2.6H2O 0.17 M, NiSO4.6H2O 0.38 M, TiN 6 gr/L, AlN 10gr/L, H3BO3 0.49 M, and Sodium Dodecyl Sulfate (SDS) 0.6 gr/L. Platinum (Pt) will be used on the counter electrode and Tungsten Carbide (WC) will be used on the working electrode. Variations in pulse current density that will be used are 1 mA/mm2 and 1.2 mA/mm2. The electrodeposition process will be carried out for 30 minutes at 40°C temperature and stirring rate 600 rpm. After the electrodeposition process, morphological characterization was examinated using a Scanning Electron Microscope (SEM). SEM results at 1000x magnification show that at variations in pulse current density of 1 mA/mm2 the particle size is larger, the distribution of particles is quite even, there are neither cracks nor visible agglomeration on the substrate surface, whereas at a current density of 1.2 mA/mm2 ,the particles look smaller, the particles are evenly distributed, there are neither visible cracks nor agglomerations on the substrate surface, so the surface looks smoother. The results show that as the current density increases, the layer surface morphology will become smoother.
MORPHOLOGY AND COMPOSITION FORMATION IN NICKEL SILICON NITRIDE (NI/SI3N4) COMPOSITE LAYERS USING PULSE ELECTRODEPOSITION METHOD: PEMBENTUKAN MORFOLOGI DAN KOMPOSISI PADA LAPISAN KOMPOSIT NICKEL SILICON NITRIDE ( NI/SI3N4 ) MENGGUNAKAN METODE ELEKTRODEPOSISI ARUS PULSA Irsya Luthfiah Ramadhyagita; Esmar Budi; Teguh Budi Prayitno
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA27

Abstract

Metal plating is commonly used in industry to modify surface morphology without altering its original properties. A composite Ni/Si3N4 layer on Tungsten Carbide (WC) was formed using a current density of 0.25 mA/mm2 to analyze the surface morphology and composition of the Ni/Si3N4 composite layer. The formation process employed the pulsed current electrodeposition method at a temperature of 40°C, with a stirring rate of 600 rpm for 1 hour. The solution composition included 0.38 M Ni2SO4·6H2O, 0.17 M Ni2Cl2·6H2O, 0.6 g/L Si3N4, 0.6 g/L SDS (Sodium Dodecyl Sulfate), and 0.49 M H3BO3. The results showed the presence of Ni and Si metal elements with mass compositions of 85.17% and 0.82%, respectively. Surface morphology scanning revealed a smooth surface with slight agglomeration on the substrate.
ANALYSIS OF FORMATION AND CHARACTERIZATION OF Ni-TiN-AlN COMPOSITE LAYERS USING ELECTRODEPOSITION METHOD WITH PULSE CURRENT DENSITY VARIATIONS: ANALISIS PEMBENTUKAN DAN KARAKTERISASI LAPISAN KOMPOSIT Ni-TiN-AlN DENGAN METODE ELEKTRODEPOSISI TERHADAP VARIASI RAPAT ARUS PULSA Syamsinar; Esmar Budi; Teguh Budiprayitno
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1303.FA28

Abstract

In this paper, the formation of a Ni-TiN-AlN composite coating layer is carried out to study the effect of variations in pulse current density on surface morphology and coating composition. The coating process is carried out using the electrodeposition method. The Ni-TiN-AlN composite layer was formed on a Tungsten Carbide (WC) substrate with an electrolyte solution composition consisting of 0.17 M NiCl2.6H2O, 0.38 M NiSO4.6H2O, 0.49 M H3BO3, 0.6 g/l Sodium Dodecyl Sulfate (SDS), particles TiN strengthening powder of 6 gr/l and AlN powder of 10 g/l. Electrodeposition on the substrate was carried out for 30 minutes and variations in current density used were 0.15 mA/mm2, 0.25 mA/mm2, and 0.35 mA/mm2. The Ni-TiN-AlN composite layer was characterized using SEM-EDS (Scanning Electron Microscopy-Energy Dispersive Spectroscopy), X-Ray Diffraction (XRD), and Hardness Test (Vickers). The results show that the surface morphology and composition of the Ni-TiN-AlN composite layer are influenced by the current density used.
DESIGN AND DEVELOPMENT OF A PULSE GENERATOR SYSTEM FOR THE FORMATION AND CHARACTERIZATION OF Ni-TiN/Si3N4 COMPOSITE LAYERS USING PULSE CURRENT DENSITY ELECTRODEPOSITION METHOD: RANCANG BANGUN SISTEM PULSE GENERATOR UNTUK PEMBENTUKAN DAN KARAKTERISASI LAPISAN KOMPOSIT Ni-TiN/Si3N4 DENGAN METODE ELEKTRODEPOSISI RAPAT ARUS PULSA Arsyan Fadilah; Esmar Budi; Teguh Budi Prayitno
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA29

Abstract

This research aims to make a pulse generator system and test the design results in the electrodeposition process by analyzing the composition and surface morphology of the Ni-TiN/Si3N4 composite layer formed. The Ni-TiN/Si3N4 coating is used because it can increase hardness, seal diffusion to the substrate, and prevent oxidation at high temperatures. Tungsten carbide (WC) is coated to reduce wear, improve the surface, increase adhesion, and strength of the substrate without changing the original properties. Pulse current electrodeposition uses Pulse Width Modulation (PWM) circuit with IC 555 as pulse generator. The result of the Pulse Generator system design is a pulse wave that can be adjusted by adjusting the duty cycle value using a potentiometer and can be observed using an oscilloscope, and the pulse height or output current can be adjusted as needed and can be measured using a multimeter. The electrodeposition process was carried out for 30 minutes at 40ºC with a stirring rate of 600 rpm. Morphological scanning using a Scanning Electron Microscope (SEM) showed a rough surface, uneven particle size distribution, and agglomeration in the formed layer. Energy Dispersive Spectroscopy (EDS) scanning results showed the success of the coating formed with the presence of Ni, TiN, and Si3N4 metal elements with a thickness of 2.7191 μm.
EXTRACTION AND ABSORBANCE PROPERTIES TEST OF OIL FROM SACHA INCHI SEEDS (PLUKENETIA VOLUBILIS L.): EKSTRAKSI DAN UJI SIFAT ABSORBANSI MINYAK DARI BIJI TANAMAN SACHA INCHI (PLUKENETIA VOLUBILIS L.) Selvi Puspita Dewi; Agus Setyo Budi; Jaja Jamaludin; Rahmat Setiawan Mohar; Nurfina Yudasari; Iwan Sugihartono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA31

Abstract

The seeds of the sacha inchi plant (Plukenetia volubilis L.) have been extracted using the cold pressing method at a temperature of 45°C and a pressure of 600 bar or 60 MPa. Seeds come from sacha inchi plants grown at an altitude of 200 and 500 masl each with an oil volume of 100 ml. Testing of absorbance properties will be carried out using the UV-Vis spectrophotometer technique. So that the absorbance spectrum pattern are expected to provide information on the characteristics of the substance content possessed by the sacha inchi plant, namely lipids/fatty acids, proteins, tocopherols, phytosterols, phenolic components, fiber, antioxidants, carbohydrates, vitamins, polyphenols, and minerals.
NATURAL ZEOLITE ACTIVATION AND ZAA/Ni CATALYST SYNTHESIS USING THE WET IMPREGNATION METHOD: AKTIVASI ZEOLIT ALAM DAN SINTESIS KATALIS ZAA/Ni MENGGUNAKAN METODE IMPREGNASI BASAH Elsa Regita Hutami; Esmar Budi; Saddam Husin; Dita Adi Saputra; Muhammad Dikdik Gumelar
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA30

Abstract

Zeolite has been widely used as a heterogeneous catalyst in catalytic cracking reactions. The role of zeolite as a catalyst depends on the amount and site of acid present on the surface of the catalyst. The imposition of nickel metal on the pores of zeolite can increase the surface area of the catalyst, which allows more reactant molecules to interact with the active site, thereby increasing the selectivity of the product. This study aims to study the process of natural zeolite activation and the manufacture of catalysts made from nickel-impregnation active natural zeolite consisting of BET and XRF characteristics. The zeolite used in this study is natural zeolite from Sukabumi. The catalyst variations used are activated natural zeolite with H2SO4 (ZAA) and ZAA/Ni with a nickel concentration of 2%. The type of nickel used is NiSO4 MHP (Mixed Hydroxide Precipitate) 2%. The results of the study showed an increase in the surface area of natural zeolite from 61.59 m2/g to 91.72 m2/g. Activation of zeolite using sulfuric acid has succeeded in reducing the impurity elements contained in natural zeolites such as Na, K, Cl, Mg and Fe. Nickel that has been successfully impregnated into zeolite pores by 0.30% in the ZAA/Ni catalyst.
MONITORING THE GROWTH OF BIOLOGICAL AGENT FUNGI IN ORGANIC MATERIAL MIXTURES WITH VARIED COMPOSITIONS USING AN ELECTRONIC NOSE: MONITORING PERTUMBUHAN JAMUR AGENSIA HAYATI DALAM CAMPURAN BAHAN ORGANIK DENGAN VARIASI KOMPOSISI MENGGUNAKAN ELECTRONIC NOSE Indriani Lutfiyyatunnisa; Bambang Heru Iswanto; Agustin Sri Mulyatni
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA32

Abstract

The use of a mixture of biological agents and organic matter waste can be used as an alternative to chemical fertilizers as an environmentally friendly bioinsecticide product. However, the presence of biological agent organisms in organic materials and susceptible to contamination in certain compositions is difficult to detect early. In this study, an electronic nose (e-nose) is used to detect the presence of three growing fungal mycelium and contamination in a mixture of organic materials based on their aroma patterns. As a first step, a selection of features will be made that will be used to build a detection model. Features are extracted from e-nose response data taken from 28 samples of a mixture of bio-agent fungi with organic materials consisting of 9 variations in composition. E-nose used version 3 with a total of 16 Taguci type sensors. Experiments were conducted with three samples of biological fungi each mixed with bagasse organic matter with variations in the composition of dilutions 10(−1), 10(−2), and 10(−3)as well as dilution volumes of 2 ml, 4 ml, and 6 ml as well as control samples containing bagasse organic matter alone. There were a total of 28 samples with three repetitions with different sampling times. For principal component analysis, data processing begins with data pre-processing by performing baseline correction and normalization. Furthermore, data analysis is carried out using Principal Component Analysis (PCA) with descriptive statistical features of the minimum value. From the results of the analysis using PCA, the first two main components explained about 67.35% and the second main component explained about 18.56% of the data variation.
IDENTIFICATION OF CHEMICAL ELEMENTS IN SWEET POTATO (IPOMOEA BATATAS L.) AND CASSAVA (MANIHOT ESCULENTA) USING LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) TECHNIQUE: IDENTIFIKASI UNSUR-UNSUR KIMIA PADA UBI JALAR (IPOMOEA BATATAS L) DAN UBI KAYU (MANIHOT ESCULENTA) DENGAN TEKNIK LASER INDUCED BREAKDOWN SPECTROSCOPY (LIBS) Anggi Eka Safitri; Ivan Tanra
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA33

Abstract

Sweet potatoes are the third staple food in Indonesia after rice and corn. Sweet potatoes do not have different harvest periods and there are many types, including sweet potatoes (Ipomoea batatas L) and cassava (Manihot esculenta), resulting in differences in physical and chemical properties. In this research, experiments were carried out using the Laser Induced Shockwave Plasma Spectroscopy (LISPS) technique using an Nd-YAG laser (1064 nm, 10 Hz) operated in Q-Switch mode on dried cassava and sweet potato samples. Research was conducted to identify and compare the chemical element content of the two sweet potato samples. The sample is placed in a chamber made of metal where the air pressure can be vacuumed and varied with a vacuum pump. Plasma is generated by focusing a laser beam (pulse) on the sample surface with a focusing lens through a window. Plasma radiation is detected using a spectrometer equipped with optical fiber. Plasma radiation is detected using a spectrometer equipped with optical fiber. The results obtained from the blood sample were the detection of elements namely calcium (Ca), sodium (Na), and magnesium (Mg).
DENTIFICATION AND CLASSIFICATION OF SOIL TYPES IN THE SERANG REGION USING Vs30 GEOMORPHOLOGICAL DATA: IDENTIFIKASI KLASIFIKASI JENIS TANAH DI WILAYAH SERANG MENGGUNAKAN DATA Vs 30 GEOMORFOLOGI Selsa Sururiyah Sya’baniah; Agus Setyo Budi; Nur Fani Habibah
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA34

Abstract

This study aims to identify and classify soil types in the Serang area using geomorphology-based Vs30 data as the main parameter. The geomorphological method analyzes the physical characteristics and morphology of soils, while Vs30 measures shear wave velocity to a depth of 30 meters to evaluate soil strength and stability. The geomorphology map and Vs30 map are interconnected to comprehensively present soil distribution and properties. The Indonesian Local Footprint Atlas (Vs30) prepared by PVMBG, using engineering geomorphology classification, is the main reference in this study to create seismic/earthquake hazard maps in Serang. The results show a close relationship between Vs30 and geomorphology, which includes variations in soil texture, structure and geotechnical conditions in Serang. This information is critical for land use planning, disaster mitigation and resource management. The research highlights the importance of Vs30 data in producing accurate data, where soil class affects earthquake acceleration and intensity. Determination of soil class using geological and morphological parameters and Vs30, classified according to SNI standards, is an important step in earthquake risk management in this region.
IDENTIFICATION OF TRICHODERMA SP. FUNGAL POPULATION LEVELS IN ORGANIC MATERIALS USING ELECTRONIC NOSE (E-NOSE): IDENTIFIKASI TINGKAT POPULASI JAMUR TRICHODERMA SP. PADA BAHAN ORGANIK MENGGUNAKAN ELECTRONIC NOSE (E-NOSE) Muhamad Rizki; Bambang Heru Iswanto; Agustin Sri Mulyatni
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA35

Abstract

The use of synthetic pesticides for pest and disease control in crops raises significant health and environmental concerns. As an eco-friendly alternative, biological control using biofungicides such as Trichoderma sp. has become increasingly important. Effective biofungicide production necessitates precise determination of Trichoderma sp. population levels. This study aims to identify Trichoderma sp. population levels (105, 106, and 107 CFU/ml) based on aroma data from an Electronic Nose (E-nose). The experiment began with the rejuvenation of Trichoderma sp. samples, followed by inoculation on three organic materials (sugarcane bagasse, peat, and bran). Gas sensor data were collected using the E-nose after a 7-day incubation period in glass bottles. Feature extraction, using statistical and time domain methods, was performed to identify the fungal population. Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) demonstrated that the E-nose sensor responses effectively differentiated Trichoderma sp. population levels based on the type of organic material. For the three organic materials, PCA revealed that PC1 accounted for 79.76% and PC2 for 13.49% of the variance, while LDA showed LD1 accounted for 62.54% and LD2 for 28.22% of the variance. Specifically, for the sugarcane bagasse, PCA indicated PC1 at 79.77% and PC2 at 13.49%, with LDA showing LD1 at 60.93% and LD2 at 28.58%.

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