Fibrous materials serve as an intriguing class of 3D materials to meet the growing demands for flexible, foldable, biocompatible, and biodegradable sensors and the rising desires for higher sensitivity, lower cost, and better wearability. The use of such materials for creating a fibrous sensor that interfaces with a sensing film with the transducing electronics is however difficult by conventional photolithographic methods. This presentation will describe a highly effective pathway featuring surface-mediated interconnection of metal nanoclusters and nanoparticles in fibrous materials at ambient conditions for fabricating fibrous sensors. Bimetallic gold-copper and silver-copper alloy nanoparticles are used to demonstrate anisotropic conductivity characteristics. The coupling of electrically conductive microelectrodes and surface-mediated assembly of nanoparticles creates sensitive chemiresistive interfaces on the fibrous substrates for sensitive and selective detection gaseous and vaporous analytes. This strategy has significant implications for manufacturing high-performance fibrous platforms to meet the growing demands of the advanced multifunctional sensors and biosensors.

Surface-mediated interconnections of nanoparticles towards multi-functional fibrous sensors

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.