A5032394337- Graphene research and applications
- 2D Materials and Applications
- Carbon Nanotubes in Composites
- Molecular Junctions and Nanostructures
- Boron and Carbon Nanomaterials Research
- Science and Education Research
- Education during COVID-19 pandemic
- Nanopore and Nanochannel Transport Studies
- Force Microscopy Techniques and Applications
- Chemical and Physical Properties of Materials
- Nanowire Synthesis and Applications
- Hydrocarbon exploration and reservoir analysis
- Education and Digital Technologies
- Surface and Thin Film Phenomena
- Nanotechnology research and applications
- Fullerene Chemistry and Applications
- Enhanced Oil Recovery Techniques
Universidade Federal do Rio de Janeiro
2019-2025
University of California, Merced
2025
Instituto de Física La Plata
2020
Universidad Autónoma de Madrid
2002
Using a scanning tunnelling microscope or mechanically controllable break junction it has been shown that is possible to control the formation of wire made single gold atoms. In these experiments an interatomic distance between atoms in chain $\ensuremath{\sim}3.6 \mathrm{\AA{}}$ was reported which not consistent with recent theoretical calculations. Here, using precise calibration procedures for both techniques, we measure length atomic chains. Based on peaks observed histogram find mean...
We explain the behavior of bandgap for twisted double bilayer graphene different angles and discuss two mechanisms involved. propose corrections to tight binding continuum models.
In this work, we study structural and vibrational properties of multilayer graphene using density-functional theory with van der Waals (vdW) functionals. Initially, analyze how different vdW functionals compare by evaluating the lattice parameters, elastic constants frequencies low energy optical modes graphite. Our results indicate that vdW-DF1-optB88 functional has best overall performance on description properties. Next, use to influence interactions graphene. Specifically, evaluate...
In oil reservoirs, a significant amount of resides in small pores where nanoscale phenomena dominate wettability and drive the mobility oil. Nanoscale hence control quantity to be recovered on reservoir scale. However, there are scientific challenges both experimental computational quantification wetting nanoscale. Experimentally, challenge is controlling characterizing extremely amounts liquids sub-micron length scales. New measurement methods need developed order obtain high-quality data...
Neste trabalho, apresentamos a adaptação da disciplina de Física Experimental II do Instituto UFRJ para o ensino totalmente remoto, motivada pelas restrições impostas pela pandemia COVID-19. A consiste em atividades práticas nos temas hidrostática, oscilações harmônicas e ondas, que foram reformuladas estudante pudesse realizá-las casa, partir materiais uso cotidiano ou fácil acesso, enfatizando abordagem “mão-na-massa” (montagem realização dos experimentos pelo próprio estudante). Os alunos...