Bioinspired Material-Integrated Sensors for Improving Nanoplasmonic Characteristics

Year 2022, Volume: 50 Issue: 2, 193 - 204, 28.02.2022

Fatih İnci

https://doi.org/10.15671/hjbc.1035918

Cited By: 1

Abstract

In this study, we developed a nanoplasmonic-based sensor design, which was constructed with a bio-inspired silk material and plasmonic materials (gold nanoparticles). We characterized this mutual integration at molecular level by using Atomic Force Microscopy, Scanning Electron Microscopy, as well as the chemical composition was confirmed with Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy and X-Ray Photoelectron Spectroscopy analyses, along with contact angle measurements for hydrophilicity/hydrophobicity evaluation. Once a single layer of silk-gold nanoparticle mixture was accomplished, we serially applied an adlayer and plasmonic material to create more sensitive surface. Accordingly, we benchmarked the performance of the multi-layer sensor system, and observed ~6.8 times (or red-shifts from 7.93 nm to 12.90 nm) signal improvements compared to the one developed by a single layer. In sum, we here presented (i) a facile drop-casting method for developing a nanoplasmonic sensor design, (ii) the use of inexpensive off-the-shelf plastic as a substrate, (iii) easy-to-adapt strategy with standard spectrometer devices, and (iv) minimum training for its proper use.

Keywords

Biosensor, nanoplasmonics, bio-inspired materials, silk

Supporting Institution

TÜBİTAK; TÜBİTAK; TÜBA; BİLİM AKADEMİSİ

Project Number

118C254; 120Z335; TÜBA-GEBİP; BAGEP

Thanks

Dr. Fatih Inci gratefully acknowledges the support from TÜBİTAK 2232-International Fellowship for Outstanding Researchers (Project No: 118C254), TÜBİTAK 3501-Career Development Program (CAREER) (Project No: 120Z335), and Turkish Academy of Sciences - Outstanding Young Scientists Award Program (TÜBA-GEBİP). This publication has been produced benefiting from the 2232 International Fellowship for Outstanding Researchers Program of TÜBİTAK (Project No: 118C254). However, the entire responsibility of the publication/paper belongs to the owner of the publication/paper. The financial support received from TÜBİTAK does not mean that the content of the publication is approved in a scientific sense by TÜBİTAK. This work was supported by the BAGEP Award of the Science Academy.

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