New catalysts and directionality control in III-V semiconductor nanowires

• Grant number: 19/07616-3
• Support type: Regular Research Grants
• Duration: November 01, 2019 - July 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal researcher: Mônica Alonso Cotta
• Grantee: Mônica Alonso Cotta
• Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

This project has two main objectives related to the synthesis of type III-V semiconductor nanowires by the Vapor-Liquid-Solid method. These objectives will expand our understanding of the physical processes involved in the growth of these nanomaterials, as well as point out alternatives to new sensor fabrication methodologies. We intend to explore the control of directionality in planar nanowires, using surface modification processes, which can lead to a better control in the fabrication of sensor devices studied in our group. On the other hand, we will also explore new metallic nanowire catalysts to replace gold, allowing better compatibility with Si technology. The introduction of new catalysts can provide new functionalities in terms of the optical and electrical properties of the nanowires obtained, which should also be studied in this project. With this project, we also expect to increase the number of tools available for studies of biosystems currently developed in the Laboratory of Nano and Biosystems. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ANBUMANI, SILAMBARASAN; DA SILVA, ALDELIANE M.; CARVALHO, ISIS G. B.; FISCHER, EDUARDA REGINA; DE SOUZA E SILVA, MARIANA; VON ZUBEN, ANTONIO AUGUSTO G.; CARVALHO, HERNANDES F.; DE SOUZA, ALESSANDRA A.; JANISSEN, RICHARD; COTTA, MONICA A. Controlled spatial organization of bacterial growth reveals key role of cell filamentation preceding Xylella fastidiosa biofilm formation. NPJ BIOFILMS AND MICROBIOMES, v. 7, n. 1 DEC 7 2021. Web of Science Citations: 0.

HERNANDEZ-MONTELONGO, JACOBO; NICASTRO, GIANLUCCA G.; PEREIRA, THAYS DE O.; ZAVARIZE, MARIANA; BEPPU, MARISA M.; MACEDO, WALDEMAR A. A.; BALDINI, REGINA L.; COTTA, MONICA A. Antibacterial effect of hyaluronan/chitosan nanofilm in the initial adhesion of Pseudomonas aeruginosa wild type, and IV pili and LPS mutant strains. SURFACES AND INTERFACES, v. 26, OCT 2021. Web of Science Citations: 0.

OLIVEIRA, DOUGLAS SOARES; COTTA, MONICA ALONSO. Role of Group V Atoms during GaAs Nanowire Growth Revealed by Molecular Dynamics Simulations: Implications in the Formation of Sharp Interfaces. ACS APPLIED NANO MATERIALS, v. 4, n. 3, p. 2903-2909, MAR 26 2021. Web of Science Citations: 0.

OLIVEIRA, DOUGLAS SOARES; COTTA, MONICA ALONSO; PADILHA, JOSE EDUARDO. Interatomic potential for atomistic simulation of self-catalyzed GaAs nanowires growth. COMPUTATIONAL MATERIALS SCIENCE, v. 183, OCT 2020. Web of Science Citations: 0.