Zobrazeno 1 - 10
of 685
pro vyhledávání: '"Fonseca, P. F."'
Research on the physical properties of materials at the nanoscale is crucial for the development of breakthrough nanotechnologies. One of the key properties to consider is the ability to conduct heat, i.e., its thermal conductivity. Graphene is a rem
Externí odkaz:
http://arxiv.org/abs/2404.19262
Kirigami, a traditional Japanese art of paper-cutting, has recently been explored for its elastocaloric effect (ECE) in kirigami-based materials (KMs), where applying strain induces temperature changes. In this study, we investigate the ECE in a nano
Externí odkaz:
http://arxiv.org/abs/2306.10353
Macroscopic assemblies of carbon nanotubes (CNTs) are desirable materials because of the excellent CNT properties. Amongst the methods of production of these CNT materials, the dry-draw fabrication where CNT fibers (CNTFs) are directly pulled out fro
Externí odkaz:
http://arxiv.org/abs/2303.10317
Autor:
Junior, Marcelo L. Pereira, De Sousa, José. M., Brandão, Wjefferson H. S., Galvão, Douglas. S., Fonseca, Alexandre F., Junior, Luiz A. Ribeiro
Me-graphene (MeG) is a novel two-dimensional (2D) carbon allotrope. Due to its attractive electronic and structural properties, it is important to study the mechanical behavior of MeG in its monolayer and nanotube topologies. In this work, we conduct
Externí odkaz:
http://arxiv.org/abs/2303.07518
Autor:
Brandão, W. H. S., De Sousa, J. M., Aguiar, A. L., Galvão, D. S., Junior, L. A. Ribeiro, Fonseca, Alexandre F.
Pentahexoctite (PH) is a pure sp$^2$ hybridized planar carbon allotrope whose structure consists of a symmetric combination of pentagons, hexagons, and octagons. The proposed PH structure was shown to be an intrinsically metallic material exhibiting
Externí odkaz:
http://arxiv.org/abs/2303.04131
Graphyne is a two-dimensional carbon allotrope of graphene. Its structure is composed of aromatic rings and/or carbon-carbon bonds connected by one or more acetylene chains. As some graphynes present the most of the excellent properties of graphene a
Externí odkaz:
http://arxiv.org/abs/2302.09180
Autor:
Tromer, Raphael M., Junior, Marcelo L. Pereira, Lima, Kleuton A. L., Fonseca, Alexandre F., da Silva, Luciano R., Galvao, Douglas S., Junior, Luiz A. Ribeiro
Due to the success achieved by graphene, several 2D carbon-based allotropes were theoretically predicted and experimentally synthesized. We used density functional theory and reactive molecular dynamics simulations to investigate the mechanical, stru
Externí odkaz:
http://arxiv.org/abs/2302.08364
Autor:
Desyatkin, Victor G., Martin, William B., Aliev, Ali E., Chapman, Nathaniel E., Fonseca, Alexandre F., Galvão, Douglas S., Miller, E. Roy, Stone, Kevin H., Wang, Zhong, Zakhidov, Dante, Limpoco, F. Ted, Almahdali, Sarah R., Parker, Shane M., Baughman, Ray H., Rodionov, Valentin O.
Publikováno v:
Journal of the American Chemical Society (2022) 144, 39, 17999
$\gamma$-Graphyne is the most symmetric sp2/sp1 allotrope of carbon, which can be viewed as graphene uniformly expanded through insertion of two-carbon acetylenic units between all the aromatic rings. To date, synthesis of bulk $\gamma$-graphyne has
Externí odkaz:
http://arxiv.org/abs/2301.05291
In this work, we investigated the effect of knots in the thermal transport of graphene nanoribbons through non-equilibrium molecular dynamics simulations. We considered the cases of one, two, and three knots are present. Temperature jumps appear in t
Externí odkaz:
http://arxiv.org/abs/2208.01751
Autor:
Brandão, Wjefferson H. S., Aguiar, Acrisio L., Fonseca, Alexandre F., Galvão, D. S., De Sousa, J. M.
A quasi-2D semiconductor carbon allotrope called tetrahexcarbon, also named tetragraphene, was recently proposed featuring an unusual structure combining squared and hexagonal rings. Mechanical and electronic properties of tetragraphene have been pre
Externí odkaz:
http://arxiv.org/abs/2207.10055