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Metal-organic frameworks (MOFs) incorporating open metal sites (OMS) have been identified as promising sorbents for many societally relevant-adsorption applications including CO$_2$ capture, natural gas purification and H$_2$ storage. It is…

In this study, we present a sophisticated hybrid machine-learning framework that significantly improves the accuracy of predicting hydrogen storage capacities in metal hydrides. This is a critical challenge due to the scarcity of…

Materials Science · Physics 2024-08-29 Satadeep Bhattacharjee , Pritam Das , Swetarekha Ram , Seung-Cheol Lee

The Self-Assembly of Nano-Objects (SANO) code we implemented demonstrates the ability to predict the molecular self-assembly of different structural motifs by tuning the molecular building blocks as well as the metallic substrate. It…

Computational Physics · Physics 2012-11-26 Thomas Roussel , Lourdes F. Vega

We measure the adsorption height of hydrogen-intercalated quasi-free-standing monolayer graphene on the (0001) face of 6H silicon carbide by the normal incidence x-ray standing wave technique. A density functional calculation for the full…

The adsorption of metal atoms on nanostructures, such as graphene and nanotubes, plays an important role in catalysis, electronic doping, and tuning material properties. Quantum chemical calculations permit the investigation of this process…

Mesoscale and Nanoscale Physics · Physics 2020-02-18 Christoph Rohmann , Maicol A. Ochoa , Michael Zwolak

The metal line profiles of different ions observed in high HI column density systems [N(HI) > 10^{16} cm^{-2}] in quasar spectra can be used to constrain the ionization structure and kinematic characteristics of the absorbers. For these…

Astrophysics · Physics 2009-11-07 S. A. Levshakov , I. I. Agafonova , M. Centurion , I. E. Mazets

We demonstrate trapping in a surface-electrode ion trap fabricated in a 90-nm CMOS (complementary metal-oxide-semiconductor) foundry process utilizing the top metal layer of the process for the trap electrodes. The process includes doped…

Quantum Physics · Physics 2014-09-17 K. K. Mehta , A. M. Eltony , C. D. Bruzewicz , I. L. Chuang , R. J. Ram , J. M. Sage , J. Chiaverini

A two-scale model is presented to simulate the dynamic ion transport and adsorption processes in porous electrodes used for capacitive deionization (CDI). At the pore scale, the Stokes equation governing water flow in porous CDI electrodes…

Fluid Dynamics · Physics 2022-01-14 Min Liu , John Waugh , Siddharth Komini Babu , Jacob S. Spendelow , Qinjun Kang

There is an urgent need to increase the global data storage capacity, as current approaches lag behind the exponential growth of data generation driven by the Internet, social media and cloud technologies. In addition to increasing storage…

Advancement of solid state electrolytes (SSEs) for all solid state batteries typically focuses on modification of a parent structural framework for improved conductivity, \textit{e.g.} cation substitution for an immobile ion or varying the…

Efficient and high capacity storage materials are indispensable for a hydrogen-based economy. In silico tools can accelerate the process of discovery of new adsorbent materials with optimal hydrogen adsorption enthalpies. Density functional…

Chemical Physics · Physics 2020-06-26 Srimukh Prasad Veccham , Martin Head-Gordon

Analytical low-current and numerical high--current models for the impedance of a hydrogen--fed anode of an anode--supported button SOFC are developed. The models use the dusty gas transport model for the binary H$_2$--H$_2$O mixture. We…

Chemical Physics · Physics 2025-01-15 Andrei Kulikovsky

We use ab initio density functional calculations to study the stability, elastic properties and electronic structure of sp2 carbon minimal surfaces with negative Gaussian curvature, called schwarzites. We focus on two systems with cubic…

Mesoscale and Nanoscale Physics · Physics 2010-09-03 Sora Park , Kritsada Kittimanapun , Jeung-Sun Ahn , Young-Kyun Kwon , David Tomanek

The abundance ratios between isomers of a COM observed in the ISM provides valuable information about the chemistry and physics of the gas and eventually, the history of molecular clouds. In this context, the origin of an abundance of…

On the basis of density functional calculations and using Bader's atom in molecule theory, this article presents quantitative microscopic analyses on the bonding properties of amorphous silicon (a-Si) which could reflect in the observable…

Materials Science · Physics 2019-04-11 Zahra Nourbakhsh , Hadi Akbarzadeh

To assess the degree of equilibration of the matter created in heavy-ion reactions at low to intermediate beam energies, a hadronic transport approach (SMASH) is employed. By using a coarse-graining method, we compute the energy momentum…

High Energy Physics - Phenomenology · Physics 2022-09-12 Gabriele Inghirami , Hannah Elfner

We have used calculations based on density functional theory to investigate the energetics of hydrogen absorption in calcium-intercalated graphites. We focus particularly on the absorption energy and the stability of the hydrogenated…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Charles R. Wood , Neal T. Skipper , Michael J. Gillan

The capacity of carbon atomic chains with different terminations for hydrogen storage is studied using first-principles density functional theory calculations. Unlike the physisorption of H2 on the H-terminated chain, we show that two Li…

Mesoscale and Nanoscale Physics · Physics 2010-07-23 Chun-Sheng Liu , Hui An , Zhi Zeng

Additive manufacturing (AM; 3D printing) in aluminium using laser powder bed fusion provides a new design space for lightweight mirror production. Printing layer-by-layer enables the use of intricate lattices for mass reduction, as well as…

Polymer electrolytes present a promising solution to the challenges posed by aqueous electrolytes in energy storage systems, offering the flexibility needed for wearable electronics. Despite the increasing interest in polymer…

Materials Science · Physics 2025-05-06 Roya Rajabi , Shichen Sun , Booker Wu , Jamil Khan , Kevin Huang