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All Journal Faraday: Journal of Fundamental Physics, Research, and Applied Science
Arum Sinda Santika
Universitas Pembangunan Nasional "Veteran" Jawa Timur
Computer Science & IT Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Review: Characterization of Optical and Structural Properties of Carbon Nanodots (CNDs) from Biomass Waste by Microwave Method Ima Putriana; Nenni Mona Aruan; Reffany Choiru Riskiarna; Nur Aini Fauziyah; Arum Sinda Santika
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 1 No. 2 (2025): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v1i2.14

Abstract

This review focuses on examining the synthesis and characterization of Carbon Nanodots (CNDs) from the utilization of Tandan Kosong Kelapa Sawit (TKKS) using the microwave method as an environmentally friendly approach. The resulting CNDs were characterized for their optical and structural properties to evaluate their potential application in the field of biosensors. The synthesis process involves carbonizing TKKS at 500℃ for 3 hours, followed by activation using a microwave at 450 Watts for 15 minutes. UV-Vis characterization shows an absorption peak at 280 nm, which indicates n-π* (C=O) and π-π* (C=C). Meanwhile, FTIR characterization aims to determine the presence of the carbonyl C=O functional group at 1990,98 cm-1 and the aromatic C=C bond at 1416,2 cm-1. The CNDs from TKKS exhibit photoluminescent properties and surface functional groupss that enhance adsorption performance and chemical reactivity. This research offers an efficient and sustainable method for synthesizing CNDs, while also being a breakthrough in utilizing biomass wate, particularly TKKS. The findings have the potential for developing carbon materials in environmental and energi applications.
A Comparative Analysis of the Mechanical Properties of Cortical–Trabecular Bone Materials and Calcium Silicate Materials for Bone Tissue Engineering Applications Sovi Anggraini Armita Dewi; Arum Sinda Santika; Primasari Cahya Wardhani; Fajar Timur
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 2 No. 1 (2026): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v2i1.62

Abstract

Biomechanical modeling of bone plays an important role in bone tissue engineering by enabling the understanding of the mechanical response of natural bone and substitute materials under physiological loading. This study aims to compare the mechanical properties of cortical–trabecular bone materials as an environment for tissue support with calcium silicate (CaSiO₃) as an engineered artificial substitute using the finite element method. A long-bone phantom model in the form of a hollow cylindrical structure was developed by separating cortical and trabecular regions and analyzed using ANSYS Workbench. The applied loading scenarios included lateral bending with a load of 500 N and axial compression with a load of 1000 N. The analyzed mechanical parameters were total deformation and equivalent (von Mises) stress. Simulation results show that cortical–trabecular bone is able to distribute stress more adaptively, with greater deformation occurring in the trabecular region and stress concentration in the cortical layer. Meanwhile, calcium silicate exhibits higher stiffness with smaller deformation but comparable maximum stress values. These findings indicate that the compatibility of mechanical properties between scaffold materials and natural bone significantly affects the effectiveness of bone tissue engineering applications.
Co-Authors Fajar Timur Ima Putriana Nenni Mona Aruan Nur Aini Fauziyah Reffany Choiru Riskiarna Sovi Anggraini Armita Dewi