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All Journal POSITRON Dinamisia: Jurnal Pengabdian Kepada Masyarakat Greensusmater
Fatimah Arofiati Noor
Institut Teknologi Bandung
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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Temperature Effects on Quantum Ballistic Transport in Double-Gate MOSFETs Using Landauer"“Büttiker Formalism Sangian, Messiah Charity; Syuhada, Ibnu; Khairurrijal, Khairurrijal; Noor, Fatimah Arofiati
POSITRON Vol 15, No 1 (2025): Vol. 15 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v15i1.83947

Abstract

This paper presents the development and application of a simulator utilizing the Landauer"“Büttiker formalism to model quantum ballistic transport in double-gate (DG) metal-oxide-semiconductor field-efffect transistors (MOSFETs), focusing on temperature variations from 0.9 K to 300 K. The simulator employs advanced modelling techniques, including the exponential decay model, quantum interference model, and the Wentzel"“Krames"“Brillouin (WKB) approximation for transmission probability. Additionally, it incorporates the Landauer"“Büttiker approach for current calculation and the gradual channel approximation (GCA) model for device operation. By leveraging these techniques, the simulator provides comprehensive insights into the quantum mechanical effects that influence device performance under various thermal conditions. This research underscores the critical role of temperature variations in the design and optimization of DG MOSFETs, emphasizing the necessity of effective thermal management and a thorough understanding of quantum effects to enhance the performance and reliability of nanoscale transistor technologies. These findings highlight the importance of incorporating temperature-dependent quantum mechanical considerations in advancing future nanoelectronic devices.
Increasing Students' Interest in Science at SDN Pulau Rinca Through Science Literacy: Peningkatan Minat Siswa SDN Pulau Rinca terhadap Sains Melalui Literasi Sains Suryani, Yani; Sulistyaningtyas, Tri; Noor, Fatimah Arofiati; Dewanti, Sira Kamila; Huljanah, Yulia Miftah
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2025): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v9i2.24109

Abstract

Abstract Rinca Island is an area in the 3T and still experiences inequality in many aspects, one of which is education. Limited access to education is shown through the condition of the school and students' knowledge about literacy and science of SDN Pulau Rinca. Unequal access makes students of SDN Pulau Rinca unable to learn science through experiments because they do not have the facilities such as the laboratory of science. This community program aims to develop science interest and reading interest of SDN Pulau Rinca students. The service was carried out by inviting students to play while learning, providing props for experiments, and providing picture books about light. The method in this service program is participatory. Students are invited to understand the phenomenon of light based on the physics point of view. The results of this service showed an increase in science interest and reading interest of SDN Pulau Rinca students. Experiments conducted with exploring games help students listen and understand the phenomenon of light well. The light phenomena taught include light can penetrate clear objects, light can be decomposed, light can be refracted, light can be reflected, and light propagates straight. Students understand the nature of light through phenomena that occur in the surrounding environment. This service also emphasizes the importance of protecting the environment to students through light experiments. Keywords: Education, Students, Teachers, Rinca Island, Literacy, Light Abstrak Pulau Rinca merupakan daerah 3T (Terdepan, Terluar, dan Tertinggal) yang masih mengalami ketimpangan dalam banyak aspek, salah satunya adalah pendidikan. Keterbatasan akses pendidikan ditunjukkan melalui kondisi sekolah dan pemahaman literasi dan sains siswa Sekolah Dasar Negeri (SDN) Pulau Rinca. Akses yang tidak merata membuat siswa SDN Pulau Rinca tidak dapat mempelajari sains melalui praktik uji coba sebab mereka tidak memiliki fasilitas yang memadai. Pengabdian masyarakat dilakukan untuk mengembangkan minat sains dan minat baca siswa SDN Pulau Rinca. Pengabdian dilakukan dengan mengajak siswa bermain sambil belajar, memberikan alat peraga untuk percobaan, dan memberikan buku bergambar tentang cahaya. Metode dalam pengabdian ini adalah partisipatoris. Siswa diajak untuk memahami fenomena cahaya berdasarkan sudut pandang fisika. Hasil pengabdian ini menunjukkan adanya peningkatan minat sains dan minat baca siswa SDN Pulau Rinca. Eksperimen yang dilakukan dengan permainan menjelajah membantu siswa menyimak dan memahami fenomena cahaya dengan baik. Fenomena cahaya yang diajarkan di antaranya cahaya dapat menembus benda bening, cahaya dapat diuraikan, cahaya dapat dibiaskan, cahaya dapat dipantulkan, dan cahaya merambat lurus. Siswa memahami sifat cahaya melalui fenomena yang terjadi di lingkungan sekitar. Pengabdian ini juga menekankan pentingnya menjaga lingkungan kepada para siswa melalui percobaan cahaya. Kata kunci: Pendidikan, Siswa, Guru, Pulau Rinca, Literasi, Cahaya
Cross-linking formation of taro starch (colocasia esculenta)-based hydrogel using freeze-thaw method: synthesis and physical characterization Luthfianti, Halida Rahmi; Nafisah, Nuraini; Waresindo, William Xaveriano; Sawitri, Asti; Hapidin, Dian Ahmad; Noor, Fatimah Arofiati; Elfahmi, Elfahmi; Edikresnha, Dhewa; Khairurrijal, Khairurrijal
Greensusmater Vol. 2 No. 2 (2025)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2025.2.2.36-48

Abstract

This study successfully made starch from taro tuber flour using immersion methods (AQ, SM) and centrifugation methods (CE). Taro starch with the AQ method produced the most starch content, thus improving the viscosity parameter in the pasting properties test. A simple mathematical model was used to control the taro starch pasting process and product. The highest R-value in the AQ sample was 309.88 s, indicating the strongest starch granule resistance. Meanwhile, the S-value in this study showed that all samples were above 1, which indicated that water penetration affected the swelling rate of starch granules. Taro starch with different isolation methods was analyzed for hydrogel formation using optical microscopy, SEM, swelling degree test, weight loss, color analysis, and texture profile analysis (TPA). The morphological images show three phases of a taro starch hydrogel formation: granular, potential cross-linking, and cross-linking hydrogel with a firm structure. Optimization of freeze-thaw process parameters was carried out to determine the optimum parameters of starch hydrogel formation, which was obtained under freezing conditions for 17 hours at -23°C and thawing for 7 hours at 4°C. The sample CE resulted in the most stable hydrogel formation, showing the highest amylose content, protein content, and the lowest impurities or ash content. The CE starch concentration of 10% resulted in the highest swelling degree and the lowest weight loss, indicating that the ability of the hydrogel to maintain its structure was stronger and more elastic. The textural properties of CE hydrogel at a concentration of 10% showed the most stability. It had the highest hardness, fracturability, chewiness, and springiness. Physical characteristics showed that the starch hydrogels had a dense, porous surface and formed a cross-linking structure. It can potentially be used in functional food applications to control the release of bioactive compounds. 
Co-Authors Dewanti, Sira Kamila Edikresnha, Dhewa Elfahmi Elfahmi, Elfahmi Hapidin, Dian Ahmad Huljanah, Yulia Miftah Khairurrijal khairurrijal Luthfianti, Halida Rahmi Nafisah, Nuraini Sangian, Messiah Charity Sawitri, Asti Syuhada, Ibnu Tri Sulistyaningtyas Waresindo, William Xaveriano Yani Suryani