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All Journal Indonesian Journal of Chemistry Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Multidisiplin Madani (MUDIMA) Journal of Applied Agricultural Science and Technology
Suratun Nafisah
Electrical Engineering Study Programme, Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Health Professions Industrial & Manufacturing Engineering Public Health Social Sciences

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Improving the Performance of Transparent Conducting Electrodes Based on Cu Nanowires Mardiansyah, Dedi; Usna, Sri Rahayu Alfitri; Nafisah, Suratun; Harsojo, Harsojo; Hatika, Rindi Genesa
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.85156

Abstract

The fabrication of transparent conducting electrodes (TCEs) is dominated by indium tin oxide (ITO). Some efforts are being made to find alternative materials as a substitute for ITO. Cu nanowire (CuNWs) is an equivalent candidate as a replacement for ITO but has a weakness that is easily oxidized. In this contribution, we report an increase in the performance of CuNWs, which can reduce the effect of oxidation. In this study, we provide a coating of CuNWs using PVP, PVA, and silver nanoparticles (AgNPs). The morphology, formation structure, and conductivity of CuNWs have been investigated by scanning electron microscope (SEM), X-ray diffraction (XRD), and IV meter. The average length and diameter of the CuNWs were 5.5 μm and 120 nm, respectively. The transparent conducting has a stable conductivity after coating with PVP, PVA and AgNPs. The application of transparent conducting electrodes are sensors, electronic devices, solar cells, and organic light-emitting diodes (OLEDs).
Detection of Malathion in Ipomoea aquatica Using a Plasmonic Sensor Based on Ag-Modified Gold Nanobipyramids Iwantono, Iwantono; Morsin, Marlia; Yudani, Ananda Febri; Syajali, Hidayati; Ziliwu, Friska; Simbolon, Norsinta Ida; Nafisah, Suratun; Isda, Mayta Novaliza; Emrinaldi, Tengku
Journal of Applied Agricultural Science and Technology Vol. 9 No. 1 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i1.369

Abstract

Malathion is an organophosphate pesticide commonly used in agriculture to protect various crops, including Ipomea aquatica. I. aquatica is a widely consumed vegetable that is vulnerable to pests, such as caterpillars, which damage its leaves. Malathion is an insecticide effective against caterpillars on Ipomoea aquatica without affecting its internal tissues. However, excessive use of this pesticide may leave residues that pose risks to the environment and human health. This study aims to develop a plasmonic sensor based on silver-modified gold nanobipyramids (Ag-GNBPs) for malathion detection. This plasmonic sensor employs anisotropic gold nanomaterials, specifically silver-coated gold nanobipyramids, to enhance localized surface plasmon resonance (LSPR) and improve detection sensitivity. Silver is used due to its high electrical conductivity and responsiveness to electrical and light stimuli. Ag-GNBPs were synthesized using the seed-mediated growth method, and their optical, structural, and morphological properties were characterized via UV-Vis spectroscopy, XRD, and FESEM. The UV-Vis absorption spectrum exhibited transverse (T-SPR) and longitudinal (L-SPR) surface plasmon resonance peaks at 500-600 nm and 700-900 nm, respectively. Testing involved adding the analyte to the solution and analyzing LSPR spectrum changes via UV-Vis spectroscopy. The observed LSPR peak shifts correlated with malathion concentration, with enhanced sensitivity due to silver modification. The results demonstrated that the plasmonic sensor based on silver-modified gold nanobipyramids not only detected malathion with high accuracy but also exhibited high sensitivity at low concentrations, which is essential for environmental monitoring and food safety applications. The optimal growth time for the seed-mediated growth method was 2 hours.
Design and Realization of Solar Power Systems using Photovoltaic Cells for Smart Plantation Watering Systems Rezky Maruli Purba; Nafisah, Suratun; Uri Arta Ramadhani; Kisna Pertiwi
Jurnal Multidisiplin Madani Vol. 3 No. 11 (2023): November, 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v3i11.7023

Abstract

The development of plants on a plantation is highly dependent on providing sufficient water for the plants.Hence, it is needed to have a optimal smart watering for plantation that is able to distribute water for plants efficiently. In this work, we developed an off-grid solar power plant to support a smart watering system. This solar power plant uses polycrystalline panels that function to absorb solar energy. Second, there is the SCC (Solar Charge Controller) which is used to charge the battery and regulate power from the battery to the load to keep the battery from overcharging. Then there is a 500 watt psw inverter. The battery is also used as a storage of the power that has been generated. The power that has been stored in this battery still be used to turn on the pump to water the plants, and it is also useful to turn on the existing sensors which will be input to the microcontroller then give the command to turn on the pump. Based on the collected data, it is known that the system requires an average power of 783.56 W for one hour
IMPLEMENTASI METODE PEMBELAJARAN STEAM MELALUI PERAKITAN ROBOT LINE FOLLOWER DI SMPN 3 NATAR Utami, Nia Saputri; Nafisah, Suratun; Miranto, Afit; Suhaimi, Khansa Salsabila; Anika, Nova
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2025): Volume 6 No. 2 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i2.36136

Abstract

Perkembangan teknologi robotika dari waktu ke waktu sangat mengagumkan. Produk teknologi robotika tersedia semakin banyak dan bervariasi mulai dari robot yang paling sederhana sampai dengan yang paling canggih sehingga robot dapat sesuai untuk memenuhi berbagai kebutuhan manusia. Melihat dari besarnya dampak teknologi robotika di masa mendatang, maka sangat diperlukan pengenalan teknologi ini kepada para siswa sekolah agar dapat menjadi inventor di bidang teknologi robotika agar Indonesia mampu menghasilkan teknologi yang bersaing dengan negara-negara maju. Pengenalan teknologi robot di sekolah dapat dilakukan dengan metode pembelajaran STEAM (Science, Technology, Engineering, Arts, and Mathematics) yang menggabungkan lima bidang ilmu yaitu sains, teknologi, teknik, seni dan matematika. Metode ini dapat mendorong siswa untuk lebih berperan aktif, berpikir kritis, berkomunikasi, dan bekerja sama dalam menyelesaikan suatu permasalahan. SMPN (Sekolah Menengah Pertama Negeri) 3 Natar belum memiliki materi pelajaran atau media pembelajaran ataupun ekstrakurikuler yang terkait dengan bidang ilmu robotika. Hal ini dikarenakan masih kurangnya pemahaman dan pengetahuan insan akademis yang terkait dengan bidang teknologi robotika tersebut. Oleh karena itu, melalui kegiatan PkM (Pengabdian kepada Masyarakat) ini, diharapakan dapat memberikan wawasan dan pemahaman mengenai teknologi robotika khususnya robot line follower yang dapat dijadikan sebagai permainan menarik selama proses pembelajaran. Hasil pre-test dan post-test menunjukkan bahwa pemahaman para siswa mengenai robot line follower meningkat setelah melewati proses pembelajaran berbasis metode STEAM. Para siswa ikut aktif berpartisipasi baik dalam bentuk diskusi maupun saat praktik langsung. Kegiatan pembelajaran yang dikemas menarik dengan memasukkan unsur permainan membuat para siswa antusias, beresemangat, dan senang mengikuti kegiatan.
Co-Authors Afit Miranto Anika, Nova Dedi Mardiansyah Harsojo Harsojo Iwantono Iwan Barnawi Kisna Pertiwi Mayta Novaliza Isda Morsin, Marlia Nia Saputri Utami Rezky Maruli Purba Rindi Genesa Hatika Simbolon, Norsinta Ida Suhaimi, Khansa Salsabila Syajali, Hidayati Tengku Emrinaldi URI ARTA RAMADHANI Usna, Sri Rahayu Alfitri Yudani, Ananda Febri Ziliwu, Friska