Detection of Green-Synthesized Fe3O4/ Chitosan Using Spin Valve GMR Sensor with Wheatstone Bridge Circuit

Shania Garcia; Ni’matil Mabarroh; Rona Cuana; Harlina Ardiyanti; Nurul Imani Istiqomah; Edi Suharyadi

doi:10.4028/p-7ulYDW

Paper Titles

Direct Detection of Green-Synthesized Fe₃O₄ Magnetic Nanotag Using Double-Chip Configuration of Commercial Giant Magnetoresistance Sensor
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Detection of Green-Synthesized Fe₃O₄/ Chitosan Using Spin Valve GMR Sensor with Wheatstone Bridge Circuit
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Enhanced Magnetic Properties of Gd-Doped ZnO by Varying the Gd Concentration via Co-Sputtering Technique
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Green Synthesis of Magnetite Nanoparticles Using Moringa oleifera and their Electro-Optic Surface Plasmon Resonance Properties
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Production of Bone Cement Composite from Polymethyl Methacrylate Produced in Laboratory Scale
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The Effectiveness of Hydroxyapatite as a Filler in Denture Base Materials Based on Polymethyl Methacrylate to Improving Mechanical Properties
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The Comparison of Polyethersulfone (PES)/N-Methyl 2-Pyrrolidone (NMP) on the Fabrication of Hollow Fiber Membranes with Commercial Membranes for Applications Hemodialysis
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Characterization of Composite Films from Taro Starch Modified with the Addition of Duck Bone Gelatin
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HomeMaterials Science ForumMaterials Science Forum Vol. 1114Detection of Green-Synthesized Fe3O4/ Chitosan...

Detection of Green-Synthesized Fe₃O₄/ Chitosan Using Spin Valve GMR Sensor with Wheatstone Bridge Circuit

Abstract:

Detection of magnetic nanoparticles (MNP_S) label is essential to determine the performance of giant magnetoresistance (GMR) sensors in biosensing technology. This research identifies the potency of green-synthesized Fe₃O₄/Chitosan on GMR sensors, which has never been explored. MNP_S label was synthesized by the coprecipitation method based on the green synthesis route because cost-effective, non-toxic, and reduces waste production. Chitosan is considered the best polymer candidate as a stabilizer of Fe₃O₄ because they are biodegradable, biocompatible, and hydrophilic. The characteristics of Fe₃O₄/Chitosan with several concentrations and the effect on sensor signals were investigated. Measurement of Fe₃O₄/Chitosan using a spin-valve based sensor with a Ta (2nm)/Ir₂₀Mn₈₀(10nm)/Co₉₀Fe₁₀(3nm)/Co₈₄Fe₁₀B₄(10nm)/Ta (5nm) structure on Si/SiO₂ substrate. Fe₃O₄/Chitosan has a spherical shape with an inverse spinel cubic structure. The crystallite sizes of Fe₃O₄/Chitosan (1:1) and Fe₃O₄/Chitosan (2:1) are 7.9 and 7.5 nm, respectively. Fourier transforms infrared spectra of Fe₃O₄/Chitosan showed the NH₂ bending at 1560 cm⁻¹, C-O-C stretching at 1386 cm⁻¹, and Fe-O stretching at 580 cm⁻¹. The results indicate that chitosan effectively coated the surface of Fe₃O₄. The sensitivity of the GMR sensor increased to 0.04 mV/mg/mL and 0.05 mV/mg/mL, in the case of Fe₃O₄/Chitosan (1:1) and Fe₃O₄/Chitosan (2:1). The increase in the sensitivity was caused by the decrease in diamagnetic material composition, crystallite size and the increase in the saturation magnetization of Fe₃O₄/Chitosan. Green-synthesized Fe₃O₄/Chitosan can be detected by GMR sensor by providing a low external magnetic field within the 60s and reach ruthless performance as a magnetic label to be applied to biosensors application in the future.

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Periodical:

Materials Science Forum (Volume 1114)

Pages:

9-14

DOI:

https://doi.org/10.4028/p-7ulYDW

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Online since:

February 2024

Authors:

Shania Garcia, Ni’matil Mabarroh, Rona Cuana, Harlina Ardiyanti, Nurul Imani Istiqomah, Edi Suharyadi*

Keywords:

Fe₃O₄/ Chitosan, GMR Sensor, Green Synthesis, Spin-Valve, Wheatstone Bridge

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