The Cleanroom-Free, Cheap, and Rapid Fabrication of Nanoelectrodes with Low zM Limits of Detection
Maroli, Gabriel (Institut Català de Nanociència i Nanotecnologia)
Abarintos, Vernalyn (Institut Català de Nanociència i Nanotecnologia)
Piper, Andrew (Institut Català de Nanociència i Nanotecnologia)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)

Date:	2023
Abstract:	Nanoscale electrodes have been a topic of intense research for many decades. Their enhanced sensitivities, born out of an improved signal-to-noise ratio as electrode dimensions decrease, make them ideal for the development of low-concentration analyte sensors. However, to date, nanoelectrode fabrication has typically required expensive equipment and exhaustive, time-consuming fabrication methods that have rendered them unsuitable for widespread use and commercialization. Herein, a method of nanoband electrode fabrication using low cost materials and equipment commonly found in research laboratories around the world is reported. The materials' cost to produce each nanoband is less than €0. 01 and fabrication of a batch takes less than 1 h. The devices can be made of flexible plastics and their designs can be quickly and easily iterated. Facile methods of combining these nanobands into powerful devices, such as complete three-electrode systems, are also displayed. As a proof of concept, the electrodes are functionalized for the detection of a DNA sequence specific to SARS-CoV-2 and found to display single molecule sensitivity.
Grants:	Agencia Estatal de Investigación SEV-2017-0706 Agencia Estatal de Investigación PID2021-124795NB-I00
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Small (Weinheim), (August 2023) , art. 2302136, ISSN 1613-6829

DOI: 10.1002/smll.202302136

11 p, 2.3 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles