Mapping the Volume Transfer of Graphene-Based Inks with the Gravure Printing Process: Influence of Rheology and Printing Parameters

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Fakhari, A (Author) Other; Fernandes, C (Author) Other; Galindo Rosales, FJ (Author) FEUP

Journal

Title: Materials

Vol. 15

Final page: 2580

ISSN: 1996-1944

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus

Other information

Authenticus ID: P-00W-BR2

DOI: 10.3390/ma15072580

Abstract (EN): It is a common practice to add rheology modifiers to functional inks, such as graphene inks, to optimize the rheological properties so that they can be printed with a certain printing technique. This practice may lead to inks formulations with poorer electrical, optical, and mechanical performance upon its application, which are of paramount importance in printed electronics. In this study, we demonstrate for three different commercial graphene-based inks that it is possible to control the amount of ink transferred to the flat surface by tweaking printing parameters, such as the velocity and the length scale of the gravure cell, without modifying the rheology of the ink. Finally, the results are summarized in printing maps based on dimensionless numbers, namely, the capillary and Reynolds numbers.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 20