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Self-assembled Metal-Insulator-Metal structures for Memristor applications

Grant number: 19/16249-4
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): December 01, 2019
Effective date (End): November 30, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Varlei Rodrigues
Grantee:Gabriel Gaál
Supervisor abroad: Henrique Leonel Gomes
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Local de pesquisa : Universidade do Algarve (UAlg), Portugal  
Associated to the scholarship:17/19862-3 - Study of nanostructured conducting and self-healing films for flexible electronics application, BP.DR

Abstract

This project is focused on the development of memristive systems based on hybrid nanostructures grounded on reduced graphene oxides (rGOs) wrapped in polymers. From a technological point of view, graphene-based electronics is an attractive area as the traditional silicon-based semiconductor technology is approaching fundamental limits. rGOs offer a great flexibility to develop such systems due to interesting features, such as tunable bandgap, high electronic mobility, easy process, and possibility of being deposited on flexible substrates featuring multiple tasks. In this context the Layer-by-layer (LbL) technique is an elegant way to build up multilayered interlocked nanostructures having controlled thickness and morphology at nanoscale. The LbL assembly also allows the integration of CNTs, graphene nanoflakes, polymers, metal nanoparticles, enzymes, DNA, etc., synergistically combining them in distinct molecular architectures with inherent properties different from individual components. There are few works exploiting LbL nanostructures to fabricate graphene-based electronics, so this project has a high potential to contribute for organic electronics, soft-robotics and biosensing. Prof. Henrique L. Gomes is an outstanding researcher in organic electronics and materials science. His expertise and research interests have been directed towards the electrical characterization of thin film electronic devices such as field effect transistors, diodes and MIS capacitor structures. He has a recognized experience in small signal impedance measurements techniques and since 2000 his research activities have expanded to encompass biosensing and biomedical devices. On our side we can contribute with LbL film formation, functionalization of graphene nanoflakes, some work with conducting polymers, and the characterization of the LbL nanostructures having distinct architectures to fulfill the challenge proposed here.