Mr. Jhonattan Córdoba Ramírez Profile

Jhonattan Córdoba Ramírez

at UNICAMP

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Publications (2)

Proceedings Article | 21 August 2020 Presentation + Paper

Observation of moiré superlattices on twisted bilayer graphene by scanning microwave impedance microscopy

Douglas A. Ohlberg, Andreij Gadelha, Diego Tamia, Eliel G. Neto, Daniel Miranda, Jessica Lemos, Fabiano Santana, Leonardo Campos, Jhonattan Ramírez, Cássio Gonçalves do Rego, Ado Jorio, Gilberto Medeiros-Ribeiro

Proceedings Volume 11465, 114650J (2020) https://doi.org/10.1117/12.2570651

KEYWORDS: Graphene, Microwave radiation, Microscopy, Capacitance, Superlattices, Spatial resolution, Scanning tunneling microscopy, Scanning probe microscopy, Dielectrics

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Proceedings Article | 6 March 2013 Paper

Analysis of the light coupling between nano-waveguides made of tellurite glasses

J. Córdoba-Ramírez, H. Hernandez-Figueroa, Ferney Amaya-Fernández, J. Marconi, H. Fragnito

Proceedings Volume 8627, 86270H (2013) https://doi.org/10.1117/12.2003359

KEYWORDS: Waveguides, Glasses, Protactinium, Optical amplifiers, Refractive index, Dispersion, Silica, Finite element methods, Channel projecting optics, Optical fibers

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