I-008

Dario Compagnone

dcompagnone@unite.it

F. Della Pellea, A. Scroccarello, F. Silveri, D. Paolini, I.V. Di Cristoforo, S. Fiori

University of Teramo, Italy

(Bio)Sensors And Electroanalytical Devices Integrating Laser-Induced Nanostructured Films

Nanostructured film synthesis and integration into sensors, biosensors, and paper-based analytical devices (PAD) still represent a critical issue. To overcome tedious, expensive, and not sustainable conventional fabrication techniques, several efforts are devoted to implementing effective and affordable technologies to produce nanomaterial based devices. Benchtop-scale CO2 laser plotter-based technologies represent a captivating opportunity to produce graphenic and graphitized surfaces/structures and drive nano-decoration/heterostructure formation.

This presentation will be focused on the production of different functional nanostructured films via CO2-laser plotter and their integration within completely lab-made biosensors and PAD, with the aim of reducing the use of solvents/chemical compounds as much as possible and generating virtuous circles from an environmental and economic point of view. Particular attention will be paid to biosensors and PAD manufacturing using low-cost/sustainable substrates (i.e., nitrocellulose, paper, recycled paper, paper produced from wastes, etc.) via benchtop microfabrication technologies such as stencil-printing, cutter-plotting, CO2-laser molding, thermal-lamination, etc. 

The exploitability of the developed devices will be demonstrated for the analysis of food quality and safety markers, and compounds of biological interest in model solutions and real samples. The following electrochemical devices will be presented: (i) electrochemical sensors based on laser-induced reduced graphene oxide films integrated into recycled papers and paper produced from industrial wastes for  different analytes in different samples (food, supplements/drugs, urine); (ii) an integrated paper/graphene 3D pop-up device for the quantitative sensing of carbaryl in grains at EU-law limits; (iii) activated inks/graphene-based 3rd generation paper-based biosensors for the determination of fructose and inulin in food and biological samples

This presentation aims to prove how CO2-laser plotter-based technologies are able to generate nanostructured sensing surfaces and transducers that can be integrated/interfaced through everyone-reach technologies in/with paper-based substrates, opening new paths for the development of on-demand sustainable  devices able to ensure the required analytical needs.