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Controlling magnetism of transition metal atoms by pairing with $\pi$ electronic states of graphene is intriguing. Herein, through first - principle computation we explore the possibility of switching magnetization by forming the…

Materials Science · Physics 2018-10-16 T. Tsevelmaa , Chunfeng , D. Odkhuu , N. Tsogbadrakh , S. C. Hong

An interatomic potential for the diamond and graphite phases of carbon has been created using a neural-network (NN) representation of the ab initio potential energy surface. The NN potential combines the accuracy of a first-principle…

Materials Science · Physics 2010-04-21 Rustam Z. Khaliullin , Hagai Eshet , Thomas D. Kühne , Jörg Behler , Michele Parrinello

A series of measurements using a novel technique called electrostatic-manipulation scanning tunneling microscopy were performed on a highly-oriented pyrolytic graphite (HOPG) surface. The electrostatic interaction between the STM tip and…

Mesoscale and Nanoscale Physics · Physics 2015-01-30 P. Xu , Y. Yang , S. D. Barber , J. K. Schoelz , D. Qi , M. L. Ackerman , L. Bellaiche , P. M. Thibado

We first consider the recrystallization characteristics of catalysis alloy and graphite in the process of diamond synthesis under the condition of super high pressure and high temperature in catalysis method. In the process of diamond…

Materials Science · Physics 2021-11-19 Sang Jun Cha , Myong Chol Pak , Kwang-Il Kim , Su Gon Kim

Carbon is one of the most intriguing elements in the Periodic Table. It forms many allotropes, some being known from ancient times (diamond and graphite) and some discovered ten to twenty years ago (fullerenes, nanotubes). Quite…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. I. Katsnelson

Diamond holds significant promise for a wide range of applications due to its exceptional physicochemical properties. Investigating the controlled diamond preparation from nanocarbon precursors with varying dimensions is crucial to optimize…

Materials Science · Physics 2025-02-18 Jiaxin Ming , Jingyi Tian , Liming Zhao , Jiayin Li , Guoshuai Du , Lixing Kang , Zheng Hu , Yabin Chen

For materials science, diamond crystals are almost unrivaled for hardness and a range of other properties. Yet, when simply abstracting the carbon bonding structure as a geometric bar-and-joint periodic framework, it is far from rigid. We…

Metric Geometry · Mathematics 2015-01-16 Ciprian S. Borcea , Ileana Streinu

Graphite is the thermodynamically stable form of carbon, and yet is remarkably difficult to synthesise. A key step in graphite formation is the removal of defects at high temperature ($>$2300~$^{\circ}$C) that allow graphenic fragments to…

Two dimensional layers of graphene are currently drawing a great attention in fundamental and applied nanoscience. Graphene consists of interconnected hexagons of carbon atoms as in graphite. This article presents for the first time the…

General Physics · Physics 2008-04-28 Raji Heyrovska

Finding appropriate interatomic potentials which can accurately describe the crystal structure of material is one of important topics in material science. In this paper, several interatomic potentials which comprise of Lennard-Jones (LJ)…

Materials Science · Physics 2018-07-03 Hui Zhang , Zhongwu Liu , Xichun Zhong , Dongling Jiao , Wanqi Qiu

Thermal decomposition of silicon carbide is a promising approach for the fabrication of graphene. However, the atomistic growth mechanism of graphene remains unclear. This paper describes the development of a new charge-transfer interatomic…

Materials Science · Physics 2018-03-13 So Takamoto , Takahiro Yamasaki , Jun Nara , Takahisa Ohno , Chioko Kaneta , Asuka Hatano , Satoshi Izumi

Off-lattice Grand Canonical Monte Carlo simulations of the clean diamond (111) surface, based on the effective many-body Brenner potential, yield the $(2\times1)$ Pandey reconstruction in agreement with \emph{ab-initio} calculations and…

Materials Science · Physics 2009-10-31 A. V. Petukhov , D. Passerone , F. Ercolessi , E. Tosatti , A. Fasolino

Diamond is studied by path integral molecular dynamics simulations of the atomic nuclei in combination with a tight-binding Hamiltonian to describe its electronic structure and total energy. This approach allows us to quantify the influence…

Materials Science · Physics 2009-11-11 Rafael Ramirez , Carlos P. Herrero , Eduardo R. Hernandez

A series of measurements using a technique called electrostatic-manipulation scanning tunneling microscopy (EM-STM) were performed on a highly-oriented pyrolytic graphite surface. The electrostatic interaction between the STM tip and the…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 P. Xu , Y. Yang , D. Qi , S. D. Barber , J. K. Schoelz , M. L. Ackerman , L. Bellaiche , P. M. Thibado

We use molecular simulation to construct equilibrium phase diagrams for two recently introduced model materials with isotropic, soft-repulsive pair interactions designed to favor diamond and simple cubic lattice ground states, respectively,…

Materials Science · Physics 2013-10-15 Avni Jain , Jeffrey R. Errington , Thomas M. Truskett

Superconductivity with transition temperature $T_c=1.7$ K has been reported in bilayer graphene [1,2]. The main factors, which may shed light on the mechanism of the formation of this superconductivity, are the following. Superconductivity…

Superconductivity · Physics 2018-06-22 G. E. Volovik

We review recent developments in the modelling of the phase diagram and the kinetics of crystallization of carbon. In particular, we show that a particular class of bond-order potentials (the so-called LCBOP models) account well for many of…

Materials Science · Physics 2009-11-13 Luca M. Ghiringhelli , C. Valeriani , J. H. Los , E. J. Meijer , A. Fasolino , D. Frenkel

A simple model for the "diamond graphitization" type of phase transition is proposed, leading to a good agreement with the experimental data. The phase transition temperature dependence on the external pressure is found. A new phenomenon in…

Materials Science · Physics 2012-08-09 V. N. Strekalov

The power of polymorphism in carbon is vividly manifested by the numerous applications of carbon-based nano-materials. Ranging from environmental issues to biomedical applications, it has the potential to address many of today's dire…

Materials Science · Physics 2017-03-28 Obaidur Rahaman , Bohayra Mortazavi , Arezoo Dianat , Gianaurelio Cuniberti , Timon Rabczuk

A structurally stable crystalline carbon allotrope is predicted by means of the first-principles calculations. This allotrope can be derived by substituting each atom in diamond with a carbon tetrahedron, and possesses the same space group…

Materials Science · Physics 2015-05-28 Xian-Lei Sheng , Qing-Bo Yan , Fei Ye , Qing-Rong Zheng , Gang Su