TITLE: From Scotch Tape to Roll-to-Roll: Rethinking the Fabrication of 2D Electronics
AUTHOR: Andrés Castellanos (ICMM)
WHEN: April, 30 - 12PM
WHERE: Salón de Actos, ICMM
ABSTRACT: Two-dimensional (2D) materials have enabled remarkable advances in electronic and optoelectronic devices, yet their fabrication remains largely confined to laboratory-scale approaches that are difficult to scale and reproduce. In this seminar, I will present our efforts to rethink the fabrication of 2D-material-based devices by bridging the gap between manual exfoliation techniques and scalable manufacturing strategies. Starting from high-throughput mechanical exfoliation, we have developed roll-to-roll-inspired processes capable of producing wafer-scale films of van der Waals materials with thickness in the nanometers range. These approaches are complemented by unconventional integration strategies, including ultra-conformal transfer using tattoo and decal techniques, and simplified device architectures based on ionic gating and low-cost fabrication methods. Together, these results illustrate an alternative pathway toward scalable, flexible, and application-oriented 2D electronics, where simplicity, accessibility, and performance are jointly optimized. I will conclude by discussing the opportunities and limitations of these approaches, and their potential impact on future electronic systems.
