An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold

Sensors

Antonino Pollicino¹  Salvatore Graziani²  Carlo Trigona²  Francesco Arcadio³  Luigi Zeni³  Nunzio Cennamo³  Giovanna Di Pasquale⁴ 

[1] Department of Civil Engineering and Architecture, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;Department of Electrical, Electronics and Computer Engineering (DIEEI), University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy;Dipartimento di Scienze Chimiche, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;

关键词: optical sensors;    sustainable development;    localized surface plasmon resonance;    bacterial cellulose;    eco-friendly disposable sensors;   

DOI  :  10.3390/s19224894

来源: DOAJ

【 摘 要 】

In several application fields, plasmonic sensor platforms combined with bio-receptors are intensively used to obtain biosensors. Most of these commercial devices are based on a disposable chip. Usually a gold chip, functionalized with a specific bio-receptor, inside a costly sensor system, is used. In this work, we propose a low-cost and small-size sensor system, used for monitoring a disposable plasmonic chip, based on an innovative optical waveguide made of bacterial cellulose (BC). In particular, we have sputtered gold on the green slab waveguide that is able to excite localized surface plasmon resonance (LSPR). Experimental results are presented on the capabilities of using the BC-based composite as an eco-friendly plasmonic sensor platform, which could be exploited for realizing disposable biosensors. The sensor has been used with optical fibers and simple equipment. More specifically, the fibers connect the green disposable LSPR sensor with a light source and with a spectrometer. The novel plasmonic sensing approach has been tested using two different optical waveguide configurations of BC, with and without ions inside BC.

【 授权许可】

Unknown