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All Journal Syntax Literate: Jurnal Ilmiah Indonesia JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION ILKOM Jurnal Ilmiah Journal on Education Almana : Jurnal Manajemen dan Bisnis Borneo Engineering: Jurnal Teknik Sipil Jurnal Teknik Mesin Indonesia JURNAL TEKNIK Jurnal Fisika Indonesia Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknologi Transportasi dan Logistik JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Penelitian Rumpun Ilmu Teknik Jurnal Pengabdian West Science Jurnal Psikologi dan Konseling West Science Jurnal Riset Teknik Sipil dan Sains Applied Environmental Science Jurnal Sains, Nalar, dan Aplikasi Teknologi Informasi Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Jurnal Keselamatan Transportasi Jalan Journal of Moeslim Research Technik Research of Scientia Naturalis
Siti Shofiah
Politeknik Keselamatan Transfortasi Jalan
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Journal : Research of Scientia Naturalis

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Photocatalytic Degradation of Pharmaceutical Waste Using ZnO/CuO Thin Films Under Visible Light Vann, Dara; Dara, Ravi; Rocha, Thiago; Shofiah, Siti
Research of Scientia Naturalis Vol. 2 No. 3 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i3.2384

Abstract

The increasing presence of persistent pharmaceutical contaminants in water bodies poses a significant threat to environmental and human health, necessitating effective remediation technologies. This study aimed to develop and evaluate zinc oxide/copper oxide (ZnO/CuO) composite thin films as an efficient photocatalyst for degrading pharmaceutical waste under visible light. The ZnO/CuO thin films were synthesized via a sol-gel spin-coating method, and their photocatalytic activity was assessed using diclofenac as a model pollutant. The results demonstrated that the ZnO/CuO heterostructure exhibited enhanced visible light absorption and superior photocatalytic performance compared to pure ZnO. The composite films achieved over 90% degradation of diclofenac within 120 minutes, with the process following pseudo-first-order kinetics. The enhanced efficiency is attributed to effective charge separation at the ZnO/CuO interface. This research confirms that ZnO/CuO thin films are promising, reusable photocatalysts for the sustainable treatment of pharmaceutical-contaminated water.
Ferroelectric Thin Films for Neuromorphic Computing: Synthesis, Characterization, and Device Integration Huda, Nurul; Zaki, Amin; Chai, Nong; Shofiah, Siti
Research of Scientia Naturalis Vol. 2 No. 4 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i4.2385

Abstract

The limitations of conventional von Neumann computing architectures in handling complex, data-intensive tasks have spurred significant interest in brain-inspired neuromorphic computing. A critical challenge in this field is the development of hardware that can efficiently emulate the synaptic plasticity of biological neurons. This study focuses on the synthesis, characterization, and integration of ferroelectric thin films, specifically hafnium zirconium oxide (HZO), as a promising material platform for creating artificial synaptic devices. The primary objective was to fabricate high-quality HZO thin films and demonstrate their capacity to mimic key synaptic functions. HZO films were synthesized using pulsed laser deposition, followed by comprehensive characterization of their structural, ferroelectric, and electrical properties using XRD, PFM, and I-V measurements. The optimized films were then integrated into two-terminal memristive device structures. The resulting devices successfully exhibited essential synaptic behaviors, including potentiation, depression, and spike-timing-dependent plasticity (STDP), with low energy consumption per synaptic event. The gradual and controllable modulation of ferroelectric domain switching was identified as the core mechanism enabling this analog-like resistance modulation.  
Quantum Dot-Embedded Polymer Films for Flexible Photonic Devices: Fabrication and Characterization Nampira, Ardi Azhar; Zahir, Roya; Khan, Omar; Shofiah, Siti
Research of Scientia Naturalis Vol. 2 No. 4 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i4.2389

Abstract

materials for photonic devices that can conform to non-planar surfaces. Quantum dots (QDs) are ideal candidates due to their size-tunable emission and high quantum yields, but their integration into durable, flexible platforms remains a key challenge. This study aimed to develop and characterize highly luminescent and mechanically flexible quantum dot-embedded polymer films as a robust platform for next-generation photonic applications. We fabricated composite films by embedding cadmium selenide/zinc sulfide (CdSe/ZnS) core-shell QDs into a polydimethylsiloxane (PDMS) polymer matrix via solution casting. The structural, optical, and mechanical properties were systematically investigated using transmission electron microscopy (TEM), UV-Vis absorption, photoluminescence (PL) spectroscopy, and cyclic bending tests. The results showed that TEM analysis confirmed a uniform dispersion of QDs within the PDMS matrix without aggregation. The composite films exhibited intense, stable photoluminescence, retaining the characteristic sharp emission of the colloidal QDs. Crucially, the films demonstrated exceptional mechanical flexibility, maintaining over 95% of their initial PL intensity after 1,000 bending cycles to a 5 mm radius. The optical properties remained stable under various strain conditions, proving the effective protection afforded by the polymer matrix. This work successfully demonstrates a scalable method for producing high-quality, flexible photonic materials.  
Co-Authors Aat Eska Fahmadi Aditya Prima F Agnes Angi Dian Winei Ahmad Basuki Ainun Rahmawati Ambarita, Sihar Aprianto, Rizal Arjuna, Kevin Astiti Astiti Ayu, Brasie Pradana Sella Bunga Riska Azalia, Noni Gytha Benny Hamdi Rhoma Putra Brasie Pradana Sela Bunga Reska Ayu Brasie Pradana Sela Bunga Riska Ayu Brian Adam Dwi Yulio Budhi Kristianto Bunga Riska Ayu, Brasie Pradana Sela Chai, Nong Dara, Ravi Devin Mahendika Disfianto, Fajar Dwi Wahyu Hidayat, Dwi Wahyu Edi Suharyadi Eka Krisdayanti Eko Sediyono Ery Muthoriq, Ery Fadia Qatrunada Fahmadi, Aat Eska Faishal Andhi Rokhman Farisy Yanuar W P Fernandez, Carlos Firdaus, Denisya Haddad Frans Tohom Gamar Al Haddar Griyo Arti, Tri Gunawan Gunawan Hadi, Suprapto Haidar Dzaki Hakim, M. Iman Nur Halimatus Sa'diyah, Nur Humami, Faris I Made Sukmayasa Iffan Bagus Dwi Saputra Indra Tjahyadi Ita Soegiarto Jihan Luis Joko Siswanto Kanindia Maulidhany Kanthi Pangestu Wijayanthi Khan, Jamil Khan, Omar Kurniawan, Moch. Aziz Lestari, Astri Lily Purwianti Mardikawati, Budi Mariadi Kaharmen, Herman Mohamad Yoga S MS. Viktor Purhanudin Muflihatun Muh. Safar Muhammad Iman Nur Hakim Nampira, Ardi Azhar Natasya, Berlian Nurul Fitriani Nurul Huda Nuryati Solapari Peni Susapti Pranoto, Ethys Pratindy, Raka PUTRO, HANENDYO Rinovian Rais Risqi, Muhammad Isro Riza Phahlevi Riza Phahlevi Marwanto Rizka Amanda Choirani Rocha, Thiago Sentoso, Antony Setiawan, Santo Shafa Nadhifah M Sri Yunita Ningsih Sugianto Suprapto Hadi Suprapto Hadi Susanto, C Trisno Suyuti Suyuti Vann, Dara Wahyu Hidayat, Dwi Wibowo, Muhammad Riski Septiana Xiang, Yang Yogi Oktopianto Yohanes Susanto Zahir, Roya Zainal Arifin Hasibuan Zaki, Amin Zuhrianto, Farhan Afif