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Carbon nanostructures are ideal substrates for functionalization with molecules, since they consist of a single atomic layer giving rise to an extraordinary sensitivity to changes in their surrounding. The functionalization opens a new…

Mesoscale and Nanoscale Physics · Physics 2015-01-20 Ermin Malic , Heiko Appel , Oliver T. Hofmann , Angel Rubio

Graphene is a fascinating material for exploring fundamental science questions as well as a potential building block for novel electronic applications. In order to realize the full potential of this material the fabrication techniques of…

Mesoscale and Nanoscale Physics · Physics 2017-08-23 Xu Du , Ivan Skachko , Eva Y. Andrei

We perform molecular dynamics simulations of an idealized polymer melt surrounding a nanoscopic filler particle to probe the effects of a filler on the local melt structure and dynamics. We show that the glass transition temperature $T_g$…

Soft Condensed Matter · Physics 2009-10-31 Francis W. Starr , Thomas B. Schrøder , Sharon C. Glotzer

Gas separation using polymer membranes promises to dramatically drive down the energy, carbon, and water intensity of traditional thermally driven separation, but developing the membrane materials is challenging. Here, we demonstrate a…

Materials Science · Physics 2024-11-20 Jiaxin Xu , Agboola Suleiman , Gang Liu , Michael Perez , Renzheng Zhang , Meng Jiang , Ruilan Guo , Tengfei Luo

The edge-functionalization of graphene nanoplatelets (GnP) was carried out exploiting diazonium chemistry, aiming at the synthesis of edge decorated nanoparticles to be used as building blocks in the preparation of engineered nanostructured…

Atomic-level structural changes in materials are important but challenging to study. Here, we demonstrate the dynamics and the possibility of manipulating a phosphorus dopant atom in graphene using scanning transmission electron microscopy…

Successful preparation of polymer nanocomposites, exploiting graphene-related materials, via melt mixing technology requires precise design, optimization and control of processing. In the present work, the effect of different processing…

Materials Science · Physics 2017-06-08 S. Colonna , M. M. Bernal , G. Gavoci , J. Gomez , C. Novara , G. Saracco , A. Fina

Making devices with graphene necessarily involves making contacts with metals. We use density functional theory to study how graphene is doped by adsorption on metal substrates and find that weak bonding on Al, Ag, Cu, Au and Pt, while…

Materials Science · Physics 2009-11-13 G. Giovannetti , P. A. Khomyakov , G. Brocks , V. M. Karpan , J. van den Brink , P. J. Kelly

High-performance sealing materials that can guard key components against high pressure gases and liquid chemicals while withstanding mechanical deformation are of utmost importance in a number of industries. In this present work, graphene…

Materials Science · Physics 2020-12-02 Mufeng Liu , Pietro Cataldi , Robert J. Young , Dimitrios G. Papageorgiou , Ian A. Kinloch

We use molecular dynamics simulation to study the exfoliation of graphene and fluorographene in molecular and ionic liquids, by performing computer experiments in which one layer of the 2D nanomaterial is peeled from a stack, in vacuum and…

Mesoscale and Nanoscale Physics · Physics 2018-02-07 Emilie Bordes , Joanna Szala-Bilnik , Agílio A. H. Pádua

Molecular dynamics simulation is utilized to investigate the ionic transport of NaCl in solution through a graphene nanopore under an applied electric field. Results show the formation of concentration polarization layers in the vicinity of…

Biological Physics · Physics 2013-01-10 Guohui Hu , Mao Mao , Sandip Ghosal

Nonlinear optical processes rely on the intrinsically weak interactions between photons enabled by their coupling with matter. Unfortunately, many applications in nonlinear optics are severely hindered by the small response of conventional…

Materials Science · Physics 2014-12-15 Joel D. Cox , F. J. Garcia de Abajo

We introduce effective field theories for the electronic properties of graphene in terms of relativistic fermions propagating in 2+1 dimensions, and outline how strong inter-electron interactions may be modelled by numerical simulation of a…

Strongly Correlated Electrons · Physics 2015-01-09 Simon Hands , Wes Armour , Costas Strouthos

Machine learning and optimization algorithms have been widely applied in the design and optimization for photonic devices. In this article, we briefly review recent progress of this field of research and show some data-driven applications…

Optics · Physics 2020-07-15 Tian Zhang , Qi Liu , Yihang Dan , Shuai Yu , Xu Han , Jian Dai , Kun Xu

In the case of polymer medical devices, the surface design plays a crucial role in contact with human tissue. The use of AgNPs as antibacterial agents is well known; however, their anchoring into the polymer surface can still be…

Other Quantitative Biology · Quantitative Biology 2023-12-06 Jana Pryjmakova , Daniel Grossberger , Anna Kutova , Barbora Vokata , Miroslav Slouf , Petr Slepicka , Jakub Siegel

The role of graphene in mediating the exchange interaction is theoretically investigated when it is placed between two ferromagnetic dielectric materials. The calculation based on a tight-binding model illustrates that the magnetic…

Materials Science · Physics 2009-11-13 Y. G. Semenov , J. M. Zavada , K. W. Kim

The recent development of nanoscale fillers, such as carbon nanotube, graphene, and nanocellulose, allows the functionality of polymer nanocomposites to be controlled and enhanced. However, conventional synthesis methods of polymer…

The design and production of novel 2-dimensional materials has seen great progress in the last decade, prompting further exploration of the chemistry of such materials. Doping and hydrogenating graphene is an experimentally realised method…

Chemical Physics · Physics 2017-11-22 Yasmine S. Al-Hamdani , Angelos Michaelides , O. Anatole von Lilienfeld

Nanopapers based on graphene and related materials were recently proposed for application in heat spreader applications. To overcome typical limitations in brittleness of such materials, this work addressed the combination of graphite…

Materials Science · Physics 2021-01-26 Kun Li , Daniele Battegazzore , Orietta Monticelli , Alberto Fina

The effect of graphene flakes on the strength of Ni-graphene composites is investigated using molecular dynamics simulation. Rather than introducing flakes as flat structures into the Ni matrix, as it is common in available studies, we…

Materials Science · Physics 2021-08-05 Vardan Hoviki Vardanyan , Herbert M. Urbassek
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