Molecular control in nanostructured films of carbon nanotubes

• Grant number: 13/08864-4
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date until: October 01, 2013
• End date until: September 30, 2014
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Osvaldo Novais de Oliveira Junior
• Grantee: Diogo Volpati
• Supervisor: Michael Charles Petty
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Durham University (DU), England
• Associated to the scholarship: 12/09905-3 - Spectroscopic evaluation of the bulk and interfacial molecular orientations of organic thin films deposited onto different surfaces, BP.PD

Abstract

This one-year project is aimed at fabricating and characterizing Langmuir-Blodgett, Langmuir-Schaefer and other thin films made with carbon nanotubes (CNTs). These could then be used in organic field-effect (OFET) and other electronic devices. The primary goal is to control the organization of CNTs in the films in order to optimize device performance. Experimentally this will be achieved by testing a variety of experimental conditions for the film fabrication, with the films being characterized with UV-vis., FTIR and Raman spectroscopies, in addition to atomic force microscopy and scanning electron microscopy. Films will be deposited on various types of substrates, including interdigitated gold electrodes with which current-voltage measurements will be performed to determine the electrical conductivity. This characterization process should provide feedback with regard to the molecular organization in the films and devices, thus allowing for optimization of the OFET electrical characteristics, and device properties such as efficiency and lifetime. The research activities should allow the candidate to be integrated into the NASCENCE (Nanoscale Engineering for Novel Computation using Evolution) Project, an ambitious European research activity which aims to use computer controlled manipulation of physical systems of nanoscale self-assembled components to steer them towards doing useful computation and information processing. (AU)

Scientific publications

(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)

MASSEY, M. K.; KOTSIALOS, A.; VOLPATI, D.; VISSOL-GAUDIN, E.; PEARSON, C.; BOWEN, L.; OBARA, B.; ZEZE, D. A.; GROVES, C.; PETTY, M. C.. Evolution of Electronic Circuits using Carbon Nanotube Composites. SCIENTIFIC REPORTS, v. 6, AUG 25 2016. (13/08864-4)

VOLPATI, D.; MASSEY, M. K.; JOHNSON, D. W.; KOTSIALOS, A.; QAISER, F.; PEARSON, C.; COLEMAN, K. S.; TIBURZI, G.; ZEZE, D. A.; PETTY, M. C.. Exploring the alignment of carbon nanotubes dispersed in a liquid crystal matrix using coplanar electrodes. Journal of Applied Physics, v. 117, n. 12, MAR 28 2015. (13/08864-4)

VOLPATI, DIOGO; CHACHAJ-BREKIESZ, ANNA; SOUZA, ADRIANO L.; RIMOLI, CAIO VAZ; MIRANDA, PAULO B.; OLIVEIRA, JR., OSVALDO N.; DYNAROWICZ-LATKA, PATRYCJA. Semifluorinated thiols in Langmuir monolayers - A study by nonlinear and linear vibrational spectroscopies. Journal of Colloid and Interface Science, v. 460, p. 290-302, DEC 15 2015. (12/09905-3, 13/06595-6, 14/01595-0, 13/08864-4)