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Graphene functionalized with catalytic transition metals offers high-performance gas sensing by coupling graphene's exceptional electronic transport properties with the metal's catalytic activity, yet the atomistic relationships connecting…

材料科学 · 物理学 2025-05-29 Akram Ibrahim , Ahmed M. Hafez , Mahmooda Sultana , Can Ataca

Carbon allotropes have a large family of materials with varieties of crystal structures and properties and can realize different topological phases. Using first principles calculations, we predict a new two-dimensional (2D) carbon…

材料科学 · 物理学 2019-12-06 Heng Gao , Wei Ren

This study examines the mechanical behavior of a novel class of mechanical metamaterials alternating pentamode lattices and stiffening plates. The unit cell of such lattices consists of a sub-lattice of the face cubic-centered unit cell…

应用物理 · 物理学 2020-02-04 F. Fraternali , A. Amendola

Penta-graphene (PG) is a carbon allotrope that has recently attracted the attention of the materials science community due to its interesting properties for renewable energy applications. Although unstable in its pure form, it has been…

Two-dimensional (2D) carbon-based materials are promising candidates for developing more efficient green energy conversion and storage technologies. This study presents a new 2D carbon allotrope, DOTT-Carbon, characterized by its…

材料科学 · 物理学 2025-01-10 Kleuton. A. L. Lima , Ana V. P. Abreu , Alysson M. A. Silva , Luiz A. Ribeiro

A new formula for elastic bending modulus of monolayer graphene is derived analytically from an empirical potential for solid-state carbon-carbon bonds. Two physical origins are identified for the non-vanishing bending modulus of the…

材料科学 · 物理学 2015-05-13 Qiang Lu , Marino Arroyo , Rui Huang

In the present work, first-principles calculations based on the density functional theory (DFT), GW approximation and Bethe-Salpeter equation (BSE) are performed to study the electronic and optical properties of penta-graphene (PG)…

计算物理 · 物理学 2024-01-12 Babak Minaie , Seyed A. Ketabi , José M. De Sousa

Graphene, the one-atom-thick sp2 hybridized carbon crystal, displays unique electronic, structural and mechanical properties, which promise a large number of interesting applications in diverse high tech fields. Many of these applications…

介观与纳米尺度物理 · 物理学 2016-09-27 Tommaso Cavallucci , Khatuna Kakhiani , Riccardo Farchioni , Valentina Tozzini

The structural, dynamical, and thermodynamical properties of diamond, graphite and layered derivatives (graphene, rhombohedral graphite) are computed using a combination of density-functional theory (DFT) total-energy calculations and…

材料科学 · 物理学 2009-11-10 Nicolas Mounet , Nicola Marzari

Monatomic metal (e.g. silver) structures could form preferably at graphene edges. We explore their structural and electronic properties by performing density functional theory based first-principles calculations. The results show that…

介观与纳米尺度物理 · 物理学 2017-09-13 Ning Wei , Cheng Chang , Hongwei Zhu , Zhiping Xu

This paper focuses on molecular dynamics (MD) modeling of graphene reinforced cross-linked epoxy (Gr-Ep) nanocomposite. The goal is to study the influence of geometry, and concentration of reinforcing nanographene sheet (NGS) on interfacial…

材料科学 · 物理学 2012-07-12 R. Rahman , A. Haque

The quantum-mechanochemical-reaction-coordinate simulations have been performed to investigate the mechanical properties of hydrogen functionalized graphene. The simulations disclosed atomically matched peculiarities that accompany the…

材料科学 · 物理学 2011-08-22 N. A. Popova , E. F. Sheka

The class of 2D carbon allotropes has garnered significant attention due to its exceptional optoelectronic and mechanical properties, crucial for diverse device applications, such as energy storage. This study employs density functional…

材料科学 · 物理学 2023-11-20 E. J. A. Santos , K. A. L. Lima , L. A. Ribeiro Junior

This study investigates the structural, mechanical, and electronic properties of novel two-dimensional (2D) pentaoctite (PO) monolayers composed of group-IV elements (PO-C, PO-Si, PO-Ge, and PO-Sn) using first-principles calculations.…

介观与纳米尺度物理 · 物理学 2024-09-13 Vanessa D. Kegler , Igor S. S. de Oliveira , Dominike Pacine , Ricardo W. Nunes , Teldo A. S. Pereira , Erika N. Lima

Using density functional tight-binding theory, we investigated the elastic properties and deformation and failure behaviors of pristine and defective carbon-phosphide (CP) monolayers subjected to uniform uniaxial tensile strain along…

材料科学 · 物理学 2018-09-26 V. Sorkin , Y. W. Zhang

The abundant bonding possibilities of Carbon stimulate the design of numerous carbon allotropes, promising the foundation for exploring structure-functionality relationships. Herein, utilizing the space bending strategy, we successfully…

原子物理 · 物理学 2024-01-25 Linfeng Yu , Yi Zhang , Jianzhou Lin , Kexin Dong , Xiong Zheng , Zhenzhen Qin , Guangzhao Qin

Two-dimensional (2D) carbon allotropes have received considerable attention due to their unique properties and potential applications in several fields, including electronics, catalysis, energy storage, and sensing. Following the…

We investigate the magnetic properties of Fe Phthalocyanines (FePc) that are experimentally arranged in quasi one-dimensional chains when they are grown in thin films or powders. By means of DFT calculations we reproduce the structural…

强关联电子 · 物理学 2024-04-22 Roman Pico , Alejandro Rebola , Jorge Lasave , Paula Abufager , Ignacio Hamad

Using the density-functional-based tight-binding method we performed a systematic comparative study of stability, structural and electronic properties for 12 various types of graphene allotropes, which are likely candidates for engineering…

材料科学 · 物理学 2015-05-20 A. N. Enyashin , A. L. Ivanovskii

Density functional theory (DFT) and thermal DFT (thDFT) calculations were used to evaluate the energy band structure, bandgap, and the total energy of various graphene quantum dots (GQDs). The DFT calculations were performed using local…

材料科学 · 物理学 2021-12-20 Majid Ghandchi , Ghafar Darvish , Mohammad Kazem Moravvej-Farshi