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Title : Microstructures, Absorption Spectra, and Magnetic Properties of Core-shell Fe3O4@Ag Nanoparticles for Enhancing Sensitivity of Surface Plasmon Resonance (SPR) Sensor
Author :

JUHARNI (1) ILYAS MAULANA YAHYA (2) Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (3) Takeshi Kato (4) Satoshi Iwata (5)
Date : 0 2021
Keyword : core-shell,Fe3O4@Ag,sensitivity, Surface Plasmon Resonance core-shell,Fe3O4@Ag,sensitivity, Surface Plasmon Resonance
Abstract : The purpose of this study is to enhance the sensitivity of Surface Plasmon Resonance (SPR) sensor using core-shell Fe3O4@Ag nanoparticles (NPs). Fe3O4@Ag NPs were synthesized by co-precipitation method with various concentration of Ag as a shell. The crystal structure of Fe3O4 corresponds to the cubic inverse spinel structure. The particle size of Fe3O4@Ag NPs with Ag concentration of 40mM is 13.8 nm. The saturation magnetization (Ms), and coercivity field (Hc) of Fe3O4@Ag NPs with Ag concentration of 20mM is 52.9 emu/g and 157.2 Oe, respectively, and then decreased with the increase of Ag concentration. An intensity of absorption peak increased with the increase of Ag concentration. A spherical nanoparticle consisting of a spherical Fe3O4 core covered by an Ag shell, was used as an active material to increase the signal detection of SPR, with a wavelength of 632.8 nm in the Kretschmann configuration. The system consists of a three-layer materials, i.e., prism/Au/Fe3O4@Ag NPs. The results show that the SPR angle shifted to the larger angle of incident light by using Fe3O4@Ag NPs and the addition of a core-shell in the conventional SPR-based biosensor leads to the enhancement of the SPR biosensor sensitivity.
Group of Knowledge : Fisika
Original Language : English
Level : Internasional
Status :
Published
Document
No Title Document Type Action
1 IJNEAM2020V006_Published.pdf
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2 L1_Jurnal_September_Edi-SUHARYADI_SPR.pdf
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3 2021_IJNeM_Arni.pdf
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4 Bukti-Korespondesi_IJNeaM_Juharni.pdf
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5 2021_IJNeM_Arni_Lengkap.pdf
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6 2021ijnemarnilengkappdf jurnal 8.pdf
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