TY - JOUR
T1 - Improving Optical Fiber-Based Surface Plasmon Resonance Performance Through Gold Film Modification via 3-Aminopropyltriethoxysilane Silanization
AU - Ramadhani, Ayu
AU - Sukma, Freygieon Ogiek Rizal
AU - Anisa, Miranda Nurul
AU - Na’imah, Syahidatun
AU - Hanif, Mahardika Auditia
AU - Santjojo, Dionysius J.D.H.
AU - Apsari, Retna
AU - Harun, Sulaiman Wadi
AU - Masruroh,
N1 - Publisher Copyright:
© 2025 The Author(s). Published with license by Taylor & Francis Group, LLC.
PY - 2025
Y1 - 2025
N2 - The functionalization of a gold surface with 3-aminopropyl-triethoxysilane (APTES) enhances the performance of fiber optic-based plasmonic sensors. Using the aqueous phase deposition (APD) method, APTES concentrations of 1–4% were tested. FTIR analysis showed increased amine (-NH₂) absorption with ammonium ions interacting electrostatically with Au, which improved particle rearrangement, reduced porosity, and increased surface compactness at higher concentrations. These changes enhanced the refractive index, shifted the SPR wavelength to the right, and deepened the transmittance curves. The addition of APTES significantly improved sensor performance, with sensor sensitivity increasing to 2088 nm/RIU with 4% APTES compared to 1484 nm/RIU without APTES.
AB - The functionalization of a gold surface with 3-aminopropyl-triethoxysilane (APTES) enhances the performance of fiber optic-based plasmonic sensors. Using the aqueous phase deposition (APD) method, APTES concentrations of 1–4% were tested. FTIR analysis showed increased amine (-NH₂) absorption with ammonium ions interacting electrostatically with Au, which improved particle rearrangement, reduced porosity, and increased surface compactness at higher concentrations. These changes enhanced the refractive index, shifted the SPR wavelength to the right, and deepened the transmittance curves. The addition of APTES significantly improved sensor performance, with sensor sensitivity increasing to 2088 nm/RIU with 4% APTES compared to 1484 nm/RIU without APTES.
KW - APTES silanization
KW - Au film
KW - SPR sensor
KW - optical fiber
UR - http://www.scopus.com/inward/record.url?scp=85214894549&partnerID=8YFLogxK
U2 - 10.1080/01468030.2025.2451010
DO - 10.1080/01468030.2025.2451010
M3 - Article
AN - SCOPUS:85214894549
SN - 0146-8030
JO - Fiber and Integrated Optics
JF - Fiber and Integrated Optics
ER -