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All Journal Jurnal Otomasi Kontrol dan Instrumentasi Journal of Energy, Material, and Instrumentation Technology
Arzi, Yudha Hamdi
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics

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Effect of Corona Plasma Radiation on the Contact Angle and Wettability of Bamboo Surface Alfajrin, Achmad Chalid Afif; Muhlisin, Zaenul; Komariah, Rahma Nur; Putra, Bintang Ridzky Ranindra; Nazuwatussya'diyah, Nazuwatussya'diyah; Arzi, Yudha Hamdi; Mardhiyatna, Mardhiyatna; Sari, Rizki Yustisia
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 2 (2025): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v6i2.294

Abstract

Bamboo is a widely utilized non-timber forest product, often innovated into laminated boards, particle boards, and plywood. The outer bamboo surface (skin) possesses high compressive strength but exhibits hydrophobic properties, limiting its wettability toward liquids. Plasma corona technology, operating at atmospheric pressure and using surrounding gases at a relatively low cost, offers a promising solution to modify bamboo surfaces by increasing their surface energy. This study aimed to analyze the hydrophilic resistance and wettability of bamboo surfaces treated with plasma corona, measured through contact angle analysis. The direct drop method was employed by dripping water and phenol formaldehyde (PF) fluids onto bamboo surfaces treated with plasma corona. Contact angle measurements were performed using ImageJ drop analysis software. Results demonstrated that plasma corona treatment significantly reduced contact angle values, improving surface wettability. Untreated bamboo surfaces showed contact angles of 72.7° for water and 111.5° for PF fluids, indicating limited wettability. Post-treatment, the contact angles decreased to less than 30° for water and below 90° for PF, signifying enhanced wettability. However, the hydrophilic properties were found to be non-permanent, with contact angle values gradually increasing over 13 days of observation. Among the tested parameters, plasma corona treatment with a current strength of 75 mA for 5 minutes provided the most optimal wettability improvement for water and PF fluids. This study highlights the effectiveness of plasma corona in enhancing bamboo surface wettability, making it more suitable for applications requiring adhesive bonding or fluid spreading in industrial processes.
Perancangan dan Implementasi Sistem IoT Pemantauan Kualitas Air Berbasis Salinitas dan Suhu untuk Identifikasi Risiko Habitat Larva Nyamuk Malaria Filano, Rafli; Arzi, Yudha Hamdi; Wati, Rosita; Setiawan, Rudi; Alfarabi, Affan; Oktrina, Salma Anindya; Putri, Maulina Adelia; Santoso, Budi; Rahman, Yusuf Aulia
Jurnal Otomasi Kontrol dan Instrumentasi Vol 18 No 1 (2026): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2026.18.1.8

Abstract

Malaria remains a public health problem in Indonesia, particularly in endemic coastal regions where aquatic habitats serve as breeding sites for Anopheles larvae. This study develops a multi-point Internet of Things (IoT)-based aquatic environmental monitoring system to detect conditions that support larval development through real-time measurement of water salinity and temperature. The system employs a WQ7706D digital salinity sensor, an ESP32 microcontroller, and a low-power NRF24L01 wireless communication module. Laboratory testing indicates that the sensor achieves stable readings after a 20-second stabilization period, with salinity variation of ±0,05 ppt under steady conditions. Field implementation at two coastal water sites in Hanura Village recorded salinity ranges of 1,35–2,3 ppt and temperature ranges of 28,8–30,5°C, which potentially support larval development. The wireless communication system successfully transmitted data up to 150 m with minimal packet loss. Power consumption analysis shows a daily energy requirement of 1,794 Ah, enabling autonomous operation for 10 ± 1  days using a 12 V 20 Ah battery without recharging. The main contribution of this research is the design of an IoT-based aquatic monitoring system that integrates energy optimization, stable wireless communication, and quantitative identification of malaria larval habitat risk.
Co-Authors Alfajrin, Achmad Chalid Afif Alfarabi, Affan Dwi Budi Santoso Komariah, Rahma Nur Mardhiyatna, Mardhiyatna Nazuwatussya'diyah, Nazuwatussya'diyah Oktrina, Salma Anindya Putra, Bintang Ridzky Ranindra Putri, Maulina Adelia Rafli Filano Rahman, Yusuf Aulia Rosita Wati Rudi Setiawan Sari, Rizki Yustisia Zaenul Muhlisin