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All Journal Program Kreativitas Mahasiswa - Teknologi Science and Technology Indonesia
Nur Ika Puji Ayu
Institut Teknologi Sepuluh Nopember, Surabaya
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Materials Science & Nanotechnology Physics

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SPIN DRY-PAD: MESIN PUTAR PENGERING PADI BERBASIS SISTEM OTOMASI UNTUK MENINGKATKAN KUALITAS DAN PRODUKTIVITAS PADI UD SUMBER REJEKI Adhim, Mochammad Machrus; Wahyudi, Mochammad; Yunansha, Dony; Maulida, Nadhifa; Ayu, Nur Ika Puji
Program Kreativitas Mahasiswa - Teknologi PKM-T 2013
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (137.739 KB)

Abstract

The climate change causing rice production decreases, particularly on rice drying process before being milled rice. At the observation at UD Sumber Rejeki that the drying process of rice in the rainy season suffered a loss of 900,000/ton. To minimize the production process failed in drying rice process, made a rice dryer technology with automatic dialing systems, as well as controlling the temperature and moist content in the precision can be set as needed (Spin Dry-Pad). The Result when using Spin Dry Pad, UD Sumber Rejeki can increase domestic rice production during rainy season with operational cost only 191.500/ton and the quality of rice produced according to the standart PUSLITBANG agriculture department of Indonesia, which the moisture of rice is 14%.
Temperature-Driven Optimization of LiCoO2 Thin-Film Cathodes via Pulsed Laser Deposition: Structural and Morphological Control Ayu, Nur Ika Puji; Rivai, Abu Khalid; Evvy, Kartini
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1215-1224

Abstract

Thin LiCoO2 film cathodes were fabricated on silicon substrate by Pulsed Laser Deposition (PLD). The microstructural properties were investigated as a function of the substrate temperature (Ts), which varied between 750◦C, 850 ◦C and 900 ◦C. The deposition was performed using Nd:YAG laser (266 nm, 100 mJ) under an oxygen partial pressure of 200 mTorr. X-ray Diffraction (XRD) analysis revealed that films consist of HT-LiCoO2 and a small amount of Co3O4 precipitates. The highest crystallinity was obtained for the thin film deposited at Ts = 900 ◦C, whereas the Atomic Force Microscopy (AFM) indicated uniform grain size distributions of the film deposited at Ts = 850 ◦C with an approximate surface roughness of 18 nm. The increase of surface roughness at higher Ts was attributed to non-uniform grain distribution, highlighting the importance of substrate temperature control in minimizing interfacial defects for improved electrochemical performance. This study provides key insights into the interplay between PLD parameters and film microstructure, offering a pathway for optimizing LiCoO2 cathodes for thin-film batteries and advanced solid-state energy storage devices.
Co-Authors Abu Khalid Rivai Dony Yunansha Evvy, Kartini Mochammad Machrus Adhim Mochammad Wahyudi Nadhifa Maulida