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All Journal Elektron Jurnal Ilmiah ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL NASIONAL TEKNIK ELEKTRO Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) INOVTEK Polbeng - Seri Informatika Journal of Information Technology and Computer Engineering Indonesian Journal of Electrical Engineering and Computer Science Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Endurance: Kajian Ilmiah Problema Kesehatan Jurnal Andalas: Rekayasa dan Penerapan Teknologi INOVTEK Polbeng - Seri Informatika ASEAN Journal for Science and Engineering in Materials Jurnal Elektronika dan Telekomunikasi
Ikhwana Elfitri
Andalas University
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Other

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Impact of Relative Humidity on Electrochemical Performance of MXene-Zn-CNC Composite Films Fernandez, Rudy; Abral, Hairul; Elfitri, Ikhwana
ASEAN Journal for Science and Engineering in Materials Vol 4, No 2 (2025): AJSEM: Volume 4, Issue 2, September 2025
Publisher : Bumi Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study examines the influence of relative humidity (RH) on the electrochemical and structural properties of polyvinyl alcohol (PVA) composite films reinforced with MXene, zinc oxide (ZnO), and cellulose nanocrystals (CNC). Composite films were fabricated via solvent casting and conditioned at RH levels of 50%, 75%, and 94%. Cyclic voltammetry and four-point probe tests revealed substantial enhancements in current density, specific capacitance, and bulk conductivity with increasing RH, attributed to improved ionic mobility and interfacial polarization. X-ray diffraction indicated reduced crystallinity due to polymer swelling, while scanning electron microscopy showed enhanced MXene dispersion at higher RH. Fourier-transform infrared spectroscopy confirmed intensified hydroxyl interactions, reflecting increased hydrophilicity. These humidity-induced improvements suggest promising applications in humidity-responsive flexible electronics and sensors. However, potential trade-offs include reduced mechanical stability under prolonged exposure. The findings offer new insights for optimizing hydrophilic polymer composites to enhance environmental adaptability and advanced device performance. 
Peningkatan Kualitas Syiar Islam Melalui Penggunaan Multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah Baharuddin, Baharuddin; Elfitri, Ikhwana; Fernandez, Rudy; Andre, Hanalde; Ramadhamy, Queen Hesti; Budi, Baik; Nofendra, Riko; Luthfi, Amirul
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 2 (2025): Desember 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i2.131

Abstract

Kegiatan Pengabdian kepada Masyarakat (PkM) oleh Kelompok Bidang Keahlian (KBK) Telekomunikasi, Departemen Teknik Elektro, Fakultas Teknik Universitas Andalas dilaksanakan dengan tujuan mendukung peningkatan kualitas syiar Islam melalui pemanfaatan teknologi multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah. Program yang dilaksanakan pada 22 November 2025 ini berfokus pada penyediaan dan pengenalan perangkat teknologi, terutama sistem audio dan multimedia, sebagai sarana pendukung dakwah yang lebih efektif dan menarik. Kegiatan dipimpin oleh Baharuddin, MT, dengan dukungan Ketua Program Studi Teknik Elektro, Dr. Eng. Primas Emiraldi, serta partisipasi dosen KBK Telekomunikasi lainnya. Tim PkM memberikan perangkat sound system serta satu unit vacuum cleaner sebagai upaya peningkatan fasilitas mushalla, sekaligus memberikan pelatihan penggunaan perangkat agar dapat dimanfaatkan secara optimal. Hasil kegiatan menunjukkan bahwa penerapan teknologi multimedia mampu meningkatkan kualitas penyampaian materi dakwah, memperbaiki kenyamanan jamaah, dan memperkuat kapasitas pengurus mushalla dalam pengelolaan sarana ibadah. Program ini menegaskan peran penting perguruan tinggi dalam transfer teknologi kepada masyarakat sebagai bagian dari pelaksanaan tridarma akademik.
Compact Dual Port UWB MIMO Antenna with WLAN Band Rejection Firdaus Firdaus; Intan Aprillia Ikhsan; Rahmadi Kurnia; Ikhwana Elfitri
Jurnal Elektronika dan Telekomunikasi Vol. 24 No. 2 (2024)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.635

Abstract

This research presents the design of a compact dual-port UWB MIMO antenna. The primary challenge in designing UWB MIMO antennas lies in achieving a low-frequency band of 3.1 GHz while maintaining a small size. By modifying the patch shape to a tapered configuration and incorporating an inset feed and a slit for WLAN notch band, a rectangular monopole patch antenna successfully overcomes these limitations. The MIMO configuration of this antenna achieves a wide UWB bandwidth of 3.1-12 GHz with a compact dimension of 20×28.5×1.6 mm. The antenna exhibits excellent characteristics, including low mutual coupling (-15 dB), maximum gain of 3 dBi, low ECC (<0.01), high diversity gain (<9.95), low TARC (< -20 dB), and nearly omnidirectional radiation pattern. These results demonstrate the suitability of the proposed antenna design for UWB applications.
Co-Authors Abral, Hairul Adriani Mahdarlis Afriwardi Yusri Aggrivina Dwiharzandis Ahmad Ridwan Amirul Luthfi Arina widya ASMITA, MELIA Atika, Ratna Baharuddin Baharuddin Budi, Baik Cipto Prabowo Cipto Prabowo Evi Hasnita Fauzan Mustaqim Firdaus Firdaus Firdaus Firdaus Firdaus Firdaus Habib Satria Hanalde Andre Ida Ayu Putu Sri Widnyani IHSAN, ROZAKY Ikhsan, Intan Aprillia Intan Aprilia Ikhsan Intan Aprillia Ikhsan Meza Silvana Muhammad Aditya Aditya Nikhaldo Muhammad Sobirin Mustaqim, Fauzan Onno Widodo Purbo Pratama, Rizki Wahyu Purbo, Onno Widodo Rahmadi Kurnia Ramadhamy, Queen Hesti Ratna Atika Riko Nofendra Rudy Fernandez Sobirin, Muhammad Syariful Ikhwan Vitral JR W purbo, Onno Wardhani, Aditya Yoppi Lisyadi Oktavianus Yuliswar, Teddy Zurnawita Zurnawita Zurnawita Zurnawita Zurnawita Zurnawita