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Eumelanin-based multisensory platform: A case of study for photolithographic patterning

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Paulin, Joao V. ; Albano, Luiz G. S. ; Camargo, Davi H. S. ; Pereira, Mariane P. ; Bregadiolli, Bruna A. ; Graeff, Carlos F. O. ; Bufon, Carlos C. B.
Total Authors: 7
Document type: Journal article
Source: APPLIED MATERIALS TODAY; v. 28, p. 9-pg., 2022-08-01.

Eumelanin, the most abundant brown-black pigment found in humans, is an ideal candidate for bioelectronics and eco-design technologies due to its biocompatibility, biodegradability, and hydration-dependent conductivity. Here, we validate the use of standard photolithography for integrating synthetic eumelanin into robust solidstate device platforms without unconventional methodologies. By combining AFM, Raman, and XPS with DC and AC electrical measurements, we have shown that eumelanin's film topography, chemical composition, and charge transport are not affected by the pattern process. Based on these findings, we explore interdigitated electrode structures for pH, humidity, and contact sensing system aiming at miniaturized wearable technologies for human healthcare monitoring. (AU)

FAPESP's process: 20/15869-6 - Rolled-up drain vertical organic transistors towards bioelectronic and neuromorphic applications
Grantee:João Vitor Paulin
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/07627-0 - Synthesis of conjugated reduced graphene oxide-polythiophene derivatives for application as HTM in perovskite solar cells
Grantee:Bruna Andressa Bregadiolli
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/25979-2 - Fabrication and characterization of devices and systems based on hybrid nanomembranes
Grantee:Carlos César Bof Bufon
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties
Grantee:Adalberto Fazzio
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/25553-3 - Fabrication and characterization of self-rolled up nanomembranes of surface-supported metal-organic frameworks (SURMOFs) for applications in ultracompact electronic devices
Grantee:Luíz Gustavo Simão Albano
Support Opportunities: Scholarships in Brazil - Post-Doctoral