Rotational diffusion in two-dimensional colloidal glasses

• Grant number: 19/00290-5
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2019
• End date: May 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Agreement: Emory University
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: René Alfonso Nome Silva
• Grantee: René Alfonso Nome Silva
• Principal researcher abroad: Eric R Weeks
• Institution abroad: Emory University, United States
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 16/23430-9 - Exploring stochastic dynamics of nanomaterials, AP.R

Abstract

This proposal aims to improve our understanding of rotational diffusion in colloidal glasses. Specifically, first we plan to develop simple strategies for the synthesis of colloidal clusters and other non-spherical colloidal particles. Subsequently, we plan to perform fundamental investigations of rotational diffusion in colloidal glasses by optical microscopy and simulations. These investigations include the characterization of rotational and translational diffusion decoupling, and how tracer motion relates to background particle motions. In particular, we plan to obtain proof of principle data related to tracer shape/size, obtain proof of principle data on correlations between tracers, and determine feasibility of making a glass of pure clusters. (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)

OLIVEIRA, GUILHERME H.; NOME, RENE A.. Integrating ultrafast and stochastic dynamics studies of Brownian motion in molecular systems and colloidal particles. CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, v. 44, p. 208-219, DEC 2019. (19/00290-5, 17/11986-5, 16/23430-9)

NOME, RENE A.; COSSIO, PILAR. Editorial: Integrating Timescales From Molecules Up. RONTIERS IN CHEMISTR, v. 9, p. 2-pg., 2021-04-13. (19/00290-5, 17/11986-5, 19/23307-0, 16/23430-9, 19/27471-0)