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All Journal Jurnal Ilmu Lingkungan Komunikasi Fisika Indonesia TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Chimica et Natura Acta Indonesian Journal of Chemistry JURNAL PHOTON Jurnal Zona Dinamika Lingkungan Indonesia EcoNews Jurnal Senpling Multidisiplin Indonesia
Anita, Sofia
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, University Of Riau
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Nursing Physics

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Effectiveness of adding ZnO thin films to metamaterial structures as sensors Saktioto Saktioto; Yan Soerbakti; Ari Sulistyo Rini; Budi Astuti; Erman Taer; Rahmondia Nanda Setiadi; Syamsudhuha Syamsudhuha; Sofia Anita; Yolanda Rati
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.13-24

Abstract

Metamaterials are artificial materials with the characteristics of a negative refractive index and high resonance sensitivity. Advanced engineering in metamaterials can realize great potential in combination with zinc oxide (ZnO) semiconductor materials, which can increase the efficiency of sensor technology compared to other conventional material models. This research aims to investigate the optical properties and develop an invention for a hybrid sensor media based on a split ring resonator (SRR) metamaterial structure integrated with a thin layer of ZnO. The research methodology was carried out by simulation by designing and characterizing SRR metamaterials which were designed with variations in SRR patterns, geometry, substrate materials, unit cell configurations, and variations in the thickness of the ZnO thin layer. Geometry characterization of SRR metamaterials was carried out using the Nicolson-Ross-Weir electromagnetic (EM) field function approach, specifically the optical parameters permittivity, permeability, and refractive index. They are optimizing the performance of hybrid sensor components based on metamaterials and ZnO thin films using the GHz scale EM field function approach, especially in the reflection, transmission, and absorption spectrum. Analysis of metamaterial characteristics identifies the optical properties of permittivity, permeability, and negative refractive index which are increased and optimized from the thin layer integration model 200 nm thick ZnO in the SRR metamaterial structure with a 3×3 square pattern configuration at a resonance frequency of 1.889 GHz. The performance of the hybrid sensor media provides a resonant frequency of three equal bandwidths in the frequency range 2.89 – 3.52, 5.28 – 6.54, and 7.57 – 8.46 GHz. In addition, the highest absorption spectrum of 73% is at a frequency of ~8 GHz.
BIOSORBEN ARANG BUAH JABON PUTIH (Anthocephalus cadamba Miq.) UNTUK MENJERAP ION LOGAM MERKURI (II) DALAM AIR T Abu Hanifah; Sofia Anita; Itnawita Itnawita; Ganis Fia Kartika; Romauli Romauli
JURNAL SENPLING MULTIDISIPLIN INDONESIA Vol 2, No 2 (2024)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/senpling.v2i2.20

Abstract

The aim of this study was to analyze the adsorption ability and optimum stirring speed of non-activated white jabon fruit carbon and activated carbon on the absorption of mercury (II) ions. White jabon carbon is made through a carbonization process at a temperature of 300ºC for 30 minutes, then activated with NaOH and characterization of activated carbon is also carried out according to SNI 06-3730-1995. The optimization of stirring speed was carried out by varying the stirring speed of 60, 80, 100 and 120 rpm. The results of the characterization of activated carbon of white jabon fruit in this study showed a moisture content of 1.98%, ash content of 3.11%, iodine adsorption capacity of 1160.5285 mg/g and methylene blue adsorption capacity of 25.1024 mg/g. The results of the adsorption test on activated carbon of white jabon fruit showed that the optimum stirring speed condition was 80 rpm with an adsorption efficiency of 99.78% and an adsorption capacity of 0.9641 mg/g. Based on the results of the SEM test, it was found that the activated carbon had more pores than unactivated. 
BIOSORBEN BUAH JABON PUTIH (Anthocephalus cadamba Miq.) UNTUK MENJERAP ION LOGAM MERKURI (II) Faradilla Milenia; T. Abu Hanifah; Sofia Anita; Mufidah Salsabila; Anastasia Kinzky Zipora Nainggolan
JURNAL SENPLING MULTIDISIPLIN INDONESIA Vol 2, No 1 (2024)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/senpling.v2i1.18

Abstract

This aims of this study to determine the efficiency and adsorption capacity of the biosorbent in absorbing mercury (II), determine the adsorption kinetics and isotherm model and the biosorbent regeneration ability of white jabon fruit. The optimization of the biosorbent powder was carried out on the parameters of pH, contact time and adsorbate concentration. The biosorbent is regenerated by desorption using an HCl desorption agent. Jabon fruit biosorbent powder was made through the drying process of Jabon fruit that has been cut and washed and then ground using a mortar and pestle. The results of the physical and chemical characteristics in this study showed a water content value of 8.09%, ash content of 1.32%, iodine adsorption capacity of 753.5812 mg/g and methylene blue adsorption capacity of 24.8632 mg/g. The results of the biosorption test showed that the optimum conditions for the biosorbent powder were pH 6 with an efficiency of 99.728% and a capacity of 4.7855 mg/g,  a contact time of 40 minutes with an efficiency of 99.493% and a capacity of 4.7747 mg/g, at an initial concentration of 80 mgL-1 with an efficiency of 99,912. % and the capacity was 3,5761 mg/g. Based on the FTIR results, the functional groups were C-H aliphatic, C-H aromatic, C=O, C-O and N-H. Based on the results of BET analysis, biosorbent powder had a surface area before adsorption of 3.53039 m2/g, after adsorption I 0 m2/g and after regeneration II 0.17056 m2/g. Based on the SEM-EDS results, it was found that the jabon fruit biosorbent powder had elements of O, C, Na, N, Cl, K, Hg and had an uneven texture. However, because it was in powder form, the distance between the particles looked very tight and has a small grain size. So the surface texture looked very smooth. In this study, the percentage of regeneration was 98.36%. The adsorption kinetics of this study follows the second-order Pseudo equation where the equation was y = 0.2097x - 0.0075 with R2 = 1 and K= 5.86339 gmg-1min-1, assuming a chemical adsorption process which includes intervalence forces or electron exchange between the adsorbent and adsorbate and the adsorption isotherm model follows the Langmuir equation with the equation y= 0.019x + 0.0153 with R2 = 0.9665 It is assumed that the active site on the surface of the adsorbent is homogeneous. 
Peran Serta Masyarakat dalam Pengelolaan Instalasi Pengolahan Air Limbah (IPAL) Komunal di Kabupaten Kampar Dariyatmo Dariyatmo; Yusni Ikhwan Siregar; Sofia Anita
Jurnal Zona Vol 8, No 2 (2024)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v8i2.123

Abstract

Communal IPAL is a sanitation infrastructure in the form of a building that is used to process community waste which is used communally. Communities play an important role in communal wastewater treatment plants (IPAL) because they are the users and owners of the wastewater sources that must be treated. This research aims to analyze the factors that influence Community Participation in the management of Communal Waste Water Treatment Plants (IPAL) in Kampar Regency. This research is quantitative with an analytical cross-sectional study design (Analytical Cross Sectional Study). The data in this research is primary data obtained by distributing questionnaires. The variables studied were the dependent variable (community participation in managing the Communal IPAL) and the independent variable (knowledge, education, economy and government support). The research results show that there is a significant relationship between economic knowledge (Pvalue 0.002) and government support (Pvalue 0.02) with community participation in the management of Communal IPAL in Kampar Regency. and there is no relationship between education and community participation in the management of Communal IPAL in Kampar Regency (Pvalue 0.069). It is hoped that the community can actively participate in the operation and maintenance of the communal IPAL and that the government will always accompany the community using the communal IPAL in operational and maintenance activities. 
Exploration of Analyte Electrolyticity Using Multi-SRR-Hexagonal DNG Metamaterials and ZnO Thin Films Defrianto, Defrianto; Saktioto, Saktioto; Rini, Ari Sulistyo; Syamsudhuha, Syamsudhuha; Anita, Sofia; Soerbakti, Yan
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 13, No 2: June 2025
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v13i2.6085

Abstract

Advanced engineered metamaterials (MTMs) significantly contribute to modern technological advancements, particularly through hybridization with semiconductor materials like zinc oxide (ZnO), which enhance sensor sensitivity and performance. This study aims to investigate the optical properties of hybrid MTMs and develop a novel sensor medium capable of detecting early electrolytic behaviors of analytes. Utilizing the finite-difference time-domain (FDTD) method, the sensor was designed, characterized, and integrated, featuring a hexagonal multi-cell split ring resonator (SRR) structure coated with a 200-nm ZnO thin film. The geometry of the SRR MTM was optimized using a modified Nicolson-Ross-Weir electromagnetic field function method. Results demonstrate that the MTM exhibits double-negative optical characteristics with a performance index reaching 102. Moreover, the sensor presents dual-band resonance frequencies for reflection and transmission attributed to the combination of the multi-SRR hexagonal design and ZnO coating, with an absorption peak at 8.71 GHz. Testing the sensor in varying electrolytic conditions, such as seawater, revealed a measurable reduction in resonance depth and increased sensitivity, characterized by a frequency shift of 5.25 MHz per 0.7 S/m increment in electrical conductivity. These findings highlight the MTM sensor's potential as an effective tool for enhancing spectrum readout accuracy and sensitivity in analyte detection applications.
Co-Authors Amilia Linggawati Anastasia Kinzky Zipora Nainggolan Ardiansyah Hamid Bintal Amin Budi Astuti Christine Jose Dariyatmo Dariyatmo Darnita Darwis Defrianto Defrianto Erman Taer Faradilla Milenia Ganis Fia Kartika Haryana bin Mohd Hairi Hasdi Yanti HS I Gusti Wayan Murjana Yasa I Ketut Suada Idwar, , Itnawita Itnawita Itnawita Itnawita Jasmiyati Jasmiyati Jully Handoko Maulana Hardi Miranti Putri Ridwan Gucci Mirna Ilza Mubarak Mubarak Mufidah Salsabila Nur Oktri Mulya Dewi Nurhayati Nurhayati Okfalisa Okfalisa Oktavia Surya Indra Rahmondia Nanda Setiadi Rini, Ari Sulistyo Romauli Romauli Romi Fadli Syahputra Saktioto Saktioto Saktioto, Saktioto Satria Heriady Soerbakti, Yan Sofyan Husein Siregar Sugeng Abriyanto Suharsimi Absus Syafruddin Nasution Syamsudhuha Syamsudhuha T. Abu Hanifah Tengku Ariful Amri Tengku Nurhidayah Thamrin Thamrin Vivi Roza Wahyu Hardinsyah Putra Yan Soerbakti Yanova, Shally Yolanda Rati Yonda Safutra Yusni Ikhwan Siregar