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Rotationally resolved infrared spectra are reported for the X-HCN (X = Cl, Br, I) binary complexes solvated in helium nanodroplets. These results are directly compared with that obtained previously for the corresponding X-HF complexes [J.…

Atomic and Molecular Clusters · Physics 2016-07-06 Jeremy M. Merritt , Jochen Küpper , Roger E. Miller

The structures of compressed rubidium polyhydrides, RbHn with n>1, and their evolution under pressure are studied using density functional theory calculations. These phases, which start to stabilize at only P=2 GPa, consist of Rb+ cations…

Materials Science · Physics 2012-07-26 James Hooper , Eva Zurek

We theoretically and numerically studied ordering of "colloidal ionic clusters" on periodic substrate potentials as those generated by optical trapping. Each cluster consists of three charged spherical colloids: two negatively and one…

Soft Condensed Matter · Physics 2015-05-27 Samir El Shawish , Jure Dobnikar , Emmanuel Trizac

Superhalogens are species whose electron affinity (EA) or vertical detachment energy (VDE) exceed to those of halogen. These species typically consist of a central electropositive atom with electronegative ligands. The EA or VDE of species…

Chemical Physics · Physics 2018-01-09 Ambrish Kumar Srivastava , Neeraj Misra

We investigate the adsorption of the nucleic acid bases, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U) on the outer wall of a high curvature semiconducting single-walled boron nitride nanotube (BNNT) by first principles…

Biological Physics · Physics 2014-11-20 Saikat Mukhopadhyay , S. Gowtham , Ralph H. Scheicher , Ravindra Pandey , Shashi P. Karna

In this work, we employ density functional theory (DFT) to explore the structure of boron clusters doped with two aluminium atoms (B$_7$Al$_2$ or Al$_2$B$_7$). The results show that the most stable structure is a bipyramidal configuration…

Materials Science · Physics 2024-09-30 Peter Ludwig Rodríguez-Kessler

The structure and stability of small hydrogen clusters adsorbed on graphene is studied by means of Density Functional Theory (DFT) calculations. Clusters containing up to six H atoms are investigated systematically -- the clusters having…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Zeljko Sljivancanin , Mie Andersen , Liv Hornekaer , Bjork Hammer

Hydrogen is the simplest bipolar element and its valence state can be controlled from +1 to -1. We synthesized the 1111-type CaFeAsH and LnFeAsO1-xHx (Ln = lanthanide) with the ZrCuSiAs type structure by a high-pressure synthesis method.…

Superconductivity · Physics 2017-08-02 Hideo Hosono , Satoru Matsuishi

The formation process and composition of the acrylonitrile/urea inclusion compounds (AN/UIC) with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). It is…

Chemical Physics · Physics 2015-06-11 Jun-Ting Zou , Yu-Song Wang , Wen-Min Pang , Lei Shi , Fei Lu

Rotationally resolved infrared spectra are reported for halogen atom - HF free radical complexes formed in helium nanodroplets. An effusive pyrolysis source is used to dope helium droplets with Cl, Br and I atoms, formed by thermal…

Atomic and Molecular Clusters · Physics 2016-04-13 Jeremy M. Merritt , Jochen Küpper , Roger E. Miller

Anions are formed by electron attachment to helium nanodroplets doped with N$_2$. The most prominent ion series is due to odd-numbered N$_m$$^{-}$ with 3 $\le$ m < 140. Neither N$^{-}$ nor N$_2$$^{-}$ are observed. An appearance energy of…

Atomic and Molecular Clusters · Physics 2018-05-03 Nikolaus Weinberger , Johannes Postler , Paul Scheier , Olof Echt

In this work, the solvation and electronic structure of the aqueous chloride ion solution was investigated using Density Functional Theory (DFT) based \textit{ab initio} molecular dynamics (AIMD). From an analysis of radial distribution…

Adiabatic mixed quantum/classical molecular dynamics simulations were used to generate snapshots of the hydrated electron (e-) in liquid water at 300 K. Water cluster anions that include two complete solvation shells centered on the e- were…

Data Analysis, Statistics and Probability · Physics 2016-09-28 Ilya A. Shkrob , William J. Glover , Ross E. Larsen , Benjamin J. Schwartz

We present a scheme to embed molecular anions in a gas of ultracold rubidium atoms as a route towards the preparation of cold molecular ions by collisional cooling with ultracold atoms. Associative detachment as an important loss process in…

Anion exchange at positively charged interfaces plays an important role in a variety of physical and chemical processes. However, the molecular scale details of these processes, especially with heavy and large anionic complexes, are not…

Soft Condensed Matter · Physics 2017-12-06 Ahmet Uysal , William Rock , Baofu Qiao , Wei Bu , Binhua Lin

We present $^{127}$I nuclear quadrupole resonance spectra and nuclear relaxation of $\alpha$-(BEDT-TTF)$_2$I$_3$ that undergoes a charge-ordering transition. Only one of the two I$_3$ anion sites shows a significant differentiation in the…

Strongly Correlated Electrons · Physics 2025-09-29 T. Kobayashi , Y. Kato , H. Taniguchi , T. Tsumuraya , K. Hiraki , S. Fujiyama

Layered double hydroxides (LDHs) serve a score of applications in catalysis, drug delivery, and environmental remediation. Smarter crystallography, combining X-ray diffraction and NMR spectroscopy revealed how interplay between carbonate…

Carbon materials have a range of properties such as high electrical conductivity, high specific surface area, and mechanical flexibility are relevant for electrochemical applications. Carbon materials are utilised in energy…

Density functional theory $(DFT)$ studies show that doping of $3d TM$ atoms into $Mg_4^{0,+} (TMMg_3^{0,+})$ can alter the endothermic nature of molecular hydrogen adsorption on bare $Mg_4^{0,+}$. $H_2$ adsorption on $TMMg_3^{0,+}$ clusters…

Materials Science · Physics 2021-12-21 Bishwajit Boruah , Bulumoni Kalita

Two-dimensional (2D) crystals, such as graphene, hexagonal boron nitride and transitional metal dichalcogenides, have attracted tremendous amount of attention over the past decade due to their extraordinary thermal, electrical and optical…

Materials Science · Physics 2017-02-16 Y. Zhao , Z. Wan , U. Hetmaniuk , M. P. Anantram