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The adsorption of hydrogen at nonpolar GaN(1-100) surfaces and its impact on the electronic and vibrational properties is investigated using surface electron spectroscopy in combination with density functional theory (DFT) calculations. For…

Materials Science · Physics 2017-06-28 L. Lymperakis , J. Neugebauer , M. Himmerlich , S. Krischok , M. Rink , J. Kröger , V. M. Polyakov

Graphene has been widely studied for various applications due to its outstanding electrical and mechanical properties. However, its potential in thermoelectric applications has been limited by a low Seebeck coefficient and high thermal…

Materials Science · Physics 2024-04-04 Laura Caputo , Viet-Hung Nguyen , Jean-Christophe Charlier

Burning fossil fuels emits a significant amount of CO2, causing climate change concerns. CO2 Capture and Storage (CCS) aims to reduce emissions, with fullerenes showing promise as CO2 adsorbents. Recent research focuses on modifying…

Systematic ab initio structure prediction was applied for the first time to predict low energy surface reconstructions by employing the minima hopping method on the \alpha-boron (111) surface. Novel reconstruction geometries were identified…

Materials Science · Physics 2013-10-02 Maximilian Amsler , Silvana Botti , Miguel A. L. Marques , Stefan Goedecker

We present molecular dynamics simulations of the adsorption of mixed CO2-water vapors on a graphene flakes substrate, a model inspired by the microporous structure of activated carbons. Adsorption strength is quantified through a reduced…

Materials Science · Physics 2025-12-17 Silvina Gatica

Recent experimental advances for the fabrication of various borophene sheets introduced new structures with a wide prospect of applications. Borophene is the boron atoms analogue of graphene. Borophene exhibits various structural polymorphs…

Materials Science · Physics 2017-04-17 B Mortazavi , O Rahaman , A Dianat , T Rabczuk

Boron is the fifth element in the periodic table and possesses rich chemistry second only to carbon. A striking feature of boron is that B12 icosahedral cages occur as the building blocks in bulk boron and many boron compounds. This is in…

Mesoscale and Nanoscale Physics · Physics 2016-06-22 Baojie Feng , Jin Zhang , Qing Zhong , Wenbin Li , Shuai Li , Hui Li , Peng Cheng , Sheng Meng , Lan Chen , Kehui Wu

In this chapter, the physisorption of hydrogen molecules in porous materials as possible hydrogen storage systems has been reviewed. Owing to the weak interaction between H2 molecules and the adsorbent, high storage capacities are typically…

Materials Science · Physics 2011-02-07 N. S. Venkataramanan , Y. Kawazoe

Surface interaction is extremely important to both fundamental research and practical application. Physisorption can induce shape and structural distortion (i.e. conformational changes) in macromolecular and biomolecular adsorbates, but…

Motivated by recent experimental studies on single molecular magnets grafted on graphene and single walled carbon nanotubes, we investigate the structural, electronic, and magnetic properties of an iron based magnetic molecule grafted on a…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Antoine Reserbat-Plantey , Paola Gava , Nedjma Bendiab , Marco A. Saitta

Adsorption of ortho-deuterium and para-hydrogen films on a graphite substrate, pre-plated with a single atomic layer of krypton, is studied theoretically by means of quantum Monte Carlo simulations at low temperature. Our model explicitly…

Statistical Mechanics · Physics 2007-09-28 Joseph Turnbull , Massimo Boninsegni

Hydrogen adsorption on graphene-supported metal clusters has brought much controversy due to the complex nature of the bonding between hydrogen and metal clusters. The bond types of hydrogen and graphene-supported Ti clusters are…

Although defects on graphene can degrade electron transport and its ability for use as a protection layer, they can also be helpful to tailor the local properties or activate new sites for particular adsorbates. Here, carbon vacancy defects…

Materials Science · Physics 2018-05-23 Tianbai Li , Jory A. Yarmoff

The electronic structure of pentacene decorated with dipole groups (d-pentacene) and adsorbed onto a graphene substrate has been studied within the density functional theory. Three reference configurations have been considered, namely the…

Materials Science · Physics 2017-01-02 M. Wawrzyniak-Adamczewska , M. Wierzbowska , J. J. Melendez

We report on hydrogen adsorption and desorption on titanium-covered graphene in order to test theoretical proposals to use of graphene functionalized with metal atoms for hydrogen storage. At room temperature titanium islands grow with an…

Chemical Physics · Physics 2013-12-06 Torge Mashoff , Makoto Takamura , Shinichi Tanabe , Hiroki Hibino , Fabio Beltram , Stefan Heun

The study of the adsorption phenomenon of helium began many decades ago with the discovery of graphite as a homogeneous substrate for investigation of physically adsorbed monolayer films. In particular, helium monoatomic layers on graphite…

Materials Science · Physics 2016-02-17 R. Burganova , Y. Lysogorskiy , O. Nedopekin , D. Tayurskii

With the technology of artificial defects creating, we can tune the band structure and transport properties of many two-dimensional (2D) layered materials. One prototype materials system is the antidoted graphene sheet, where periodical…

Materials Science · Physics 2022-01-19 Shuang Tang , Andy Juan , David Drysdale , Joseph Duarte Menjivar , Jason Guzman

Graphene nanostructures that support surface plasmons have been utilized to create a variety of dynamically tunable light modulators, motivated by theoretical predictions of the potential for unity absorption in resonantly-excited monolayer…

Since two-dimensional boron sheet (borophene) synthesized on Ag substrates in 2015, research on borophene has grown fast in the fields of condensed matter physics, chemistry, material science, and nanotechnology. Due to the unique physical…

Materials Science · Physics 2019-04-03 Zhi-Qiang Wang , Tie-Yu Lü , Hui-Qiong Wang , Yuan Ping Feng , Jin-Cheng Zheng

We propose a theory of optical absorption in monolayer graphene-hexagonal boron nitride (hBN) heterostructures. In highly oriented heterostructures, the hBN underlay produces a long-range moir\'e superlattice potential for the graphene…

Mesoscale and Nanoscale Physics · Physics 2013-12-10 D. S. L. Abergel , J. R. Wallbank , Xi Chen , M. Mucha-Kruczyński , Vladimir I. Fal'ko