S
Sócrates O. Dantas
Researcher at Universidade Federal de Juiz de Fora
Publications - 48
Citations - 3144
Sócrates O. Dantas is an academic researcher from Universidade Federal de Juiz de Fora. The author has contributed to research in topics: Carbon nanotube & Poisson's ratio. The author has an hindex of 19, co-authored 47 publications receiving 2985 citations. Previous affiliations of Sócrates O. Dantas include Linköping University & State University of Campinas.
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Journal ArticleDOI
Carbon Structures with Three-Dimensional Periodicity at Optical Wavelengths
Anvar A. Zakhidov,Ray H. Baughman,Zafar Iqbal,Changxing Cui,Ilyas I. Khayrullin,Sócrates O. Dantas,Jordi Marti,Victor G. Ralchenko +7 more
TL;DR: The carbon inverse opals provide examples of both dielectric and metallic optical photonic crystals that strongly diffract light and may provide a route toward photonic band-gap materials.
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Molecular-dynamics simulations of carbon nanotubes as gigahertz oscillators.
TL;DR: In this article, the authors present the first molecular dynamics simulation for these systems and show that these nano-oscillators are dynamically stable when the radii difference values between inner and outer tubes are of $\ensuremath{\sim}34\text{ }\AA{}$ Frequencies as large as 38 GHz were observed.
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Materials with Negative Compressibilities in One or More Dimensions
Ray H. Baughman,Sven Stafström,Sven Stafström,Sven Stafström,Changxing Cui,Changxing Cui,Changxing Cui,Sócrates O. Dantas,Sócrates O. Dantas,Sócrates O. Dantas +9 more
TL;DR: Rare crystal phases that expand in one or more dimensions when hydrostatically compressed are identified and shown to have negative Poisson's ratios, which may be used to fabricate porous solids that either expand in all directions when hydroStatically compressed with a penetrating fluid or behave as if they are incompressible.
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Sign Change of Poisson's Ratio for Carbon Nanotube Sheets
Lee J. Hall,Vitor R. Coluci,Douglas S. Galvao,Mikhail E. Kozlov,Mei Zhang,Sócrates O. Dantas,Ray H. Baughman +6 more
TL;DR: It is found that the in-plane Poisson's ratio of carbon nanotube sheets (buckypaper) can be tuned from positive to negative by mixing single-walled and multiwalled nanotubes, and density-normalized sheet toughness, strength, and modulus were substantially increased by this mixing.
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Gigahertz nanomechanical oscillators based on carbon nanotubes
TL;DR: In this paper, molecular dynamics studies of carbon nanotubes as mechanical gigahertz oscillators were performed and it was shown that different oscillatory regimes exist but sustained oscillations are possible only when the radii difference values of the inner and outer tubes are.