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Organisasi Riset Nanoteknologi dan Material Badan Riset dan Inovasi Nasional Gedung Manajemen (Gedung 720) Kawasan Sains dan Teknologi B.J. Habibie Jl. Raya Puspiptek 60, Setu, Tangerang Selatan, Banten, 15314
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INDONESIA
Jurnal Sains Materi Indonesia
Published by BRIN Publishing
ISSN : 14111098     EISSN : 2614087X     DOI : https://doi.org/10.55981/jsmi
Core Subject : Science, Engineering,
Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Jurnal Sains Materi Indonesia (Indonesian Journal of Materials Science, JUSAMI) is an international peer-reviewed journal that publishes significant and important research from all areas of materials science and engineering. The topics discussed in JUSAMI are research & development results in materials science and engineering, technological innovations and applications in industry based on materials such as polymers, ceramics, composites, metals, noble metals, metal alloys, oxides, or carbon, which are related to mechanical, magnetic, physical, optical, dielectric or electronic properties (superconductivity, semiconductivity, superionic conductivity, etc.) with discussion including synthesis, modification and development of methods; testing and characterization; simulation and modeling; nuclear engineering and its applications in materials science, etc.
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 14 Documents
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Search results for , issue "Vol. 24 No. 1 (2022)" : 14 Documents clear
Influence of Glucose, Urea and Bacteria Concentration On Nata De Cassava Preparation Using Liquid Tapioca Waste Medium M. Ghozali; Y Meliana; W K Restu; E Triwulandar; M Chalid
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

In this research, Nata de Cassava as the obtained bacterial cellulose was synthesized by Acetobacter xylinum using the liquid tapioca waste as the media. This research aimed to investigate the influence of concentration from carbon and nitrogen sources and then the type of bacteria used toward the obtained Nata de Cassava. The liquid tapioca waste was heated in a beaker glass at 70-80 °C and then added 5-10 % (w/v) of sugar and 0.1-0.5 % (w/v) of urea. The mixed solution was poured into a container and then cooled. Furthermore, 10-20 % (v/v) of Acetobacter xylinum was added and incubated at room temperature. After ten days, the Nata de cassava was harvested, sterilized, and immersed in ethanol, then dried in an oven at 60 °C. The results of FTIR, XRD and SEM analysis showed that Nata de Cassava had been successfully synthesized. The composition that produced the highest Nata de Cassava yield of 2.41% was the composition using 15% of A. xylinum, 10% of glucose and 0.1% of urea in the fermentation medium. In addition, the composition that produced the highest carbon conversion ratio of 26.15% was the composition that used 10% of A. xylinum, 5% of glucose and 0.2% of urea in the fermentation medium.
Sensing Properties of ZnO-SWCNT Hybrid Nanostructure Coated on Flexible Substrate for CO2 Gas Detection Aisyah Nur Estri; Riyani Tri Yulianti; Qonitatul Hidayah; Surip Kartolo; Rike Yudianti
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

We report sensing properties of functionalized single walled carbon nanotubes (f-SWCNTs) deposited on the flexible substrate of silicon (Si) and polyethylene tereptaphalate (PET). Deposition of f-SWCNT on Si rubber and PET surface was conducted by applying different manner of spray coating and dip coating techniques, respectively. Surface modification of f-SWCNT by ZnO nanostructure layer were applied by hydrothermal process.The research study were conducted to know the effect of substrate material and ZnO structure on the f-SWCNT surface which embedded in those flexible polymer substrates. The results reveal that f-SWCNT on Si substrate (f-SWCNT/Si) do not have a good response in gas sensing performance. In meanwhile f-SWCNT on PET substrates (f-SWCNT/PET) is more sensitive about 1.6% with 3s in response. ZnO structure layer modifying the surface structure of f-SWCNT enhance the sensitivity and responsiveness of the sensor with sensitivity of 4.1 % in 2s response after CO2 injection. Effect of bending treatment of the sensor and its stability were further investigated. Morphological surface of f-SWCNT network and crystal structure of ZnO and f-SWCNT were also observed by scanning electron microscope (SEM) and X-ray diffraction, respectively
The Effect of Conventional and Sonochemical Synthesis Methods on Gd2O3 Nanoparticles Properties Muflikhah; W Z Lubis; Mujamilah; M Azizah; R P Caesariyant
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

Paramagnetic Gd2O3 nanoparticles have been widely used as a contrast agent in bioimaging such as Magnetic Resonance Imaging (MRI). In this study, Gd2O3 nanoparticles were prepared using conventional and sonochemically precipitation methods, without any stabilizers. Gadolinium nitrate was used as a precursor and ammonium hydroxide as precipitating agent. The synthesized Gd2O3 nanoparticles were characterized using X-Ray Diffractometer (XRD), Particle Size Analyzer (PSA), Scanning Electron Microscope (SEM), and Vibrating Sample Magnetometer (VSM). It was found that Gd2O3 nanoparticles obtained in both methods have a cubic phase. The saturation magnetization (Ms) values of conventional and sonochemical samples were 1.63 emu/g and 1.44 emu/g respectively. The morphology of both samples shows agglomerated spherical shape in the nanometer range. The nanoparticles size of Gd2O3 that was confirmed by the Dynamic Light Scattering technique show samples from the sonochemical method has narrower size distribution (higher homogeneity) compare to samples from the conventional method. It was also found that the sonochemical synthesis technique is faster (time-saving), simple, convenient, and environmentally benign.
Topology Optimization of a Composites Frame Structure considering ply orientation for MALE UAV I B Wiranto; S O Saraswat; I R Alfikri; Chairunnisa; A Aribowo
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

This research employs the Finite element method to optimize the frame structure of a Medium Altitude Long Endurance (MALE) Unmanned Aerial Vehicle (UAV). The material used in this study is a unidirectional carbon fiber stacked in a specific sequence. The topology optimization process is conducted to achieve a lightweight structure whilst maintaining its integrity. The design constraint is set to reduce 50% weight and minimize the strain energy. The benchmark phase was performed while considering a previously done study to validate the proposed method. The results of this study have successfully reduced 34% (0.581 kg) weight of frame structure. First failure predicition study using Hashin criterion, shows the first failure occurred in the matrix of Ply-2 at 9000 N.

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