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The level structure of nuclei offers a large amount and variety of information to improve our knowledge of the strong interaction and of mesoscopic quantum systems. Gamma spectroscopy is a powerful tool to perform such studies: modern gamma…

Data Analysis, Statistics and Probability · Physics 2019-05-01 Camille Ducoin , Guillaume Maquart , Olivier Stézowski

Applications of machine learning techniques in materials science are often based on two key ingredients, a set of empirical descriptors and a database of a particular material property of interest. The advent of graph neural networks, such…

Materials Science · Physics 2023-12-18 Xiang Zhang , Zichun Zhou , Chen Ming , Yi-Yang Sun

We explore different strategies to integrate prior domain knowledge into the design of a deep neural network (DNN). We focus on graph neural networks (GNN), with a use case of estimating the potential energy of chemical systems (molecules…

Machine Learning · Computer Science 2022-08-26 Jay Morgan , Adeline Paiement , Christian Klinke

Graphene, a two-dimensional (2D) material with unique electronic properties, appears to be an ideal object for the application of surface-science methods. Among them, a family of scanning probe microscopy methods (STM, AFM, KPFM) and the…

Materials Science · Physics 2015-03-30 Yuriy Dedkov , Elena Voloshina , Mikhail Fonin

Lattice QCD is progressing toward being able to impact our understanding of nuclei and nuclear processes. I discuss areas of nuclear physics that are becoming possible to explore with lattice QCD, the techniques that are currently available…

High Energy Physics - Lattice · Physics 2007-05-23 Martin J. Savage

Defect engineering in two-dimensional (2D) materials is essential for advancing applications such as gas sensing, single-atom catalysis, and guided nanoparticle self-assembly, enabling the creation of materials with tailored…

Theory of nuclear magnetic resonance (NMR) in graphene is presented. The canonical form of the electron-nucleus hyperfine interaction is strongly modified by the linear electronic dispersion. The NMR shift and spin-lattice relaxation time…

Mesoscale and Nanoscale Physics · Physics 2009-05-19 Balázs Dóra , Ferenc Simon

Quantum confinement endows two-dimensional (2D) layered materials with exceptional physics and novel properties compared to their bulk counterparts. Although certain two- and few-layer configurations of graphene have been realized and…

Graphene is a truly two-dimensional atomic crystal with exceptional electronic and mechanical properties. Whereas conventional bulk and thin-film materials have been studied extensively, the key mechanical properties of graphene, such as…

Materials Science · Physics 2010-05-25 Dipanjan Sen , Kostya S. Novoselov , Pedro M. Reis , Markus J. Buehler

I present a concise account concerning the emergence of a research field, which deals with the thermal properties of graphene, covering the refinement of understanding of phonon transport in two-dimensional material systems. The practical…

Mesoscale and Nanoscale Physics · Physics 2022-03-01 Alexander A. Balandin

The discovery of graphene, a single layer of covalently bonded carbon atoms, has attracted intense interests. Initial studies using mechanically exfoliated graphene unveiled its remarkable electronic, mechanical and thermal properties.…

Materials Science · Physics 2013-07-23 Ting Fung Chung , Tian Shen , Helin Cao , Luis A. Jauregui , Wei Wu , Qingkai Yu , David Newell , Yong P. Chen

Owing to its excellent electrical, mechanical, thermal and optical properties, graphene has attracted great interests since it was successfully exfoliated in 2004. Its two dimensional nature and superior properties meet the need of surface…

Materials Science · Physics 2014-07-03 Xiaoguang Luo , Teng Qiu , Weibing Lu , Zhenhua Ni

Graphene is a unique two-dimensional (2D) material that has been extensively investigated owing to its extraordinary photonic, electronic, thermal, and mechanical properties. Excited plasmons along its surface and other unique features are…

Optics · Physics 2022-02-17 Tianjing Guo , Christos Argyropoulos

The interaction between carbon nanostructures like quantum dots and radiation can generate different effects inside the nanomaterial, with the use of computational methods such effects can be predicted and optimize the material allowing a…

Mesoscale and Nanoscale Physics · Physics 2022-05-10 Alexander Leon , Juan E. Gomez , Freddy R. Perez

Based on density functional calculations, optimized structures of graphite oxide are found for various coverage by oxygen and hydroxyl groups, as well as their ratio corresponding to the minimum of total energy. The model proposed describes…

Materials Science · Physics 2008-09-05 Danil W. Boukhvalov , Mikhail I. Katsnelson

Pattern recognition problems in high energy physics are notably different from traditional machine learning applications in computer vision. Reconstruction algorithms identify and measure the kinematic properties of particles produced in…

We report the results of our first-principles investigation on the interaction of the nucleobases adenine (A), cytosine (C), guanine (G), thymine (T), and uracil (U) with graphene, carried out within the density functional theory framework,…

Materials Science · Physics 2007-07-05 S. Gowtham , Ralph H. Scheicher , Rajeev Ahuja , Ravindra Pandey , Shashi P. Karna

The hydrogenation and deuteration of graphite with potassium intercalation compounds (GICs) as starting materials was investigated. Characterization of the reactions products (hydrogenated and deuterated graphene) was carried out by…

Chemical Physics · Physics 2018-05-31 Ricarda A. Schäfer , Daniela Dasler , Udo Mundloch , Frank Hauke , Andreas Hirsch

Various applications of quantum algebraic techniques in nuclear structure physics and molecular physics are briefly reviewed. Contains 81 references.

Nuclear Theory · Physics 2008-02-03 Dennis Bonatsos , C. Daskaloyannis , P. Kolokotronis , D. Lenis

An application of quantum size carbon structures--graphenes as electrodes of supercapacitors is studied. A fundamental limit of energy and power density arising from quantum nature of objects due to singularity in graphene density of states…