English
Related papers

Related papers: Differentiating Three-Dimensional Molecular Struct…

200 papers

Ion Coulomb crystals are currently establishing themselves as a highly controllable test-bed for mesoscopic systems of statistical mechanics. The detailed experimental interrogation of the dynamics of these crystals however remains an…

Quantum Physics · Physics 2015-05-05 A. Lemmer , C. Cormick , C. T. Schmiegelow , F. Schmidt-Kaler , M. B. Plenio

Exact calculation of electronic properties of molecules is a fundamental step for intelligent and rational compounds and materials design. The intrinsically graph-like and non-vectorial nature of molecular data generates a unique and…

Chemical Physics · Physics 2019-10-29 Alain Tchagang , Julio Valdés

We demonstrate that fast removal of many electrons uncovers initial correlations of atoms in a finite sample through a pronounced peak in the kinetic-energy spectrum of the exploding ions. This maximum is the result of an intricate…

Atomic and Molecular Clusters · Physics 2013-03-27 Ulf Saalmann , Alexey Mikaberidze , Jan M. Rost

We consider the Directed Coulomb Explosion regime of ion acceleration from ultra-thin double layer (high Z/low Z) mass limited targets. In this regime the laser pulse evacuated the electrons from the irradiated spot and accelerates the…

Plasma Physics · Physics 2010-07-23 S. S. Bulanov , D. W. Litzenberg , K. Krushelnick , A. Maksimchuk

Under optical excitation, coupled quantum wells are known to reveal fascinating features in the photoluminescence pattern originating from dipole orientated indirect excitons. The appearance of an external ring has been attributed to…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 J. Wilkes , E. A. Muljarov , A. L. Ivanov

Motivation: Cellular Electron CryoTomography (CECT) enables 3D visualization of cellular organization at near-native state and in sub-molecular resolution, making it a powerful tool for analyzing structures of macromolecular complexes and…

Quantitative Methods · Quantitative Biology 2017-04-14 Min Xu , Xiaoqi Chai , Hariank Muthakana , Xiaodan Liang , Ge Yang , Tzviya Zeev-Ben-Mordehai , Eric Xing

We introduce two new approximation methods for the numerical evaluation of the long-range Coulomb potential and the approximation of the resulting high dimensional Two-Electron Integrals tensor (TEI) with long-range interactions arising in…

Numerical Analysis · Mathematics 2022-10-25 Siwar Badreddine , Igor Chollet , Laura Grigori

We present a new method for assessing the intrinsic 3D shape of prestellar cores from molecular column densities. We have employed hydrodynamic simulations of contracting, isothermal cores considering three intrinsic geometries: spherical,…

Astrophysics of Galaxies · Physics 2016-02-17 A. Tritsis , K. Tassis , K. Willacy

Recently, deep learning-based methods achieved promising performance in nuclei detection and classification applications. However, training deep learning-based methods requires a large amount of pixel-wise annotated data, which is…

Image and Video Processing · Electrical Eng. & Systems 2024-01-17 Nazanin Moradinasab , Rebecca A. Deaton , Laura S. Shankman , Gary K. Owens , Donald E. Brown

Cryo-electron microscopy (cryo-EM) has become a major experimental technique to determine the structures of large protein complexes and molecular assemblies, as evidenced by the 2017 Nobel Prize. Although cryo-EM has been drastically…

Biomolecules · Quantitative Biology 2021-06-01 Dong Si , Andrew Nakamura , Runbang Tang , Haowen Guan , Jie Hou , Ammaar Firozi , Renzhi Cao , Kyle Hippe , Minglei Zhao

Electron tomography has become a commonly used tool to investigate the three-dimensional (3D) structure of nanomaterials, including colloidal nanoparticle assemblies. However, electron microscopy is typically carried out under high vacuum…

A proof-of-concept framework for identifying molecules of unknown elemental composition and structure using experimental rotational data and probabilistic deep learning is presented. Using a minimal set of input data determined…

Chemical Physics · Physics 2020-07-01 Michael C. McCarthy , Kin Long Kelvin Lee

The strong influence of the electron dynamics provides the possibility of controlling the expansion of laser-produced plasmas by appropriately shaping the laser pulse. A simple irradiation scheme is proposed to tailor the explosion of large…

Plasma Physics · Physics 2009-11-13 F. Peano , J. L. Martins , R. A. Fonseca , L. O. Silva , G. Coppa , F. Peinetti , R. Mulas

The two-body core+$2n$ cluster structure was implemented to describe the two-neutron halo nucleus $^{\mathrm{14}}\mathrm{Be}$, where the core$^{\mathrm{12}}\mathrm{Be}$ was assumed inert and at ground state and the dineutron was assumed at…

Nuclear Experiment · Physics 2017-08-23 Yu-Shou Song , Ying-Wei Hou , Li-Yuan Hu , Hui-Lan Liu , Hong-Yi Wu

The modeling of non-local-thermodynamic-equilibrium plasmas is crucial for many aspects of high-energy-density physics. It often requires collisional-radiative models coupled with radiative-hydrodynamics simulations. Therefore, there is a…

Atomic Physics · Physics 2024-02-28 Jean-Christophe Pain , Djamel Benredjem

In the Coulomb explosion acceleration regime, an ion bunch with a narrow energy range exhibits a thin shell shape with a certain diameter. The ion cloud has a layered structure of these ion bunches with different energies. The divergences…

Plasma Physics · Physics 2022-05-23 Toshimasa Morita

Proposals to determine biomolecular structures from diffraction experiments using femtosecond X-ray free-electron laser (XFEL) pulses involve a conflict between the incident brightness required to achieve diffraction-limited atomic…

Optics · Physics 2015-05-19 Harry M. Quiney , Keith A. Nugent

Understanding and controlling ultrafast non-equilibrium charge carrier dynamics is of fundamental importance in diverse fields of (quantum) science and technology. Here, we create a three-dimensional hot electron gas through two-photon…

Following the changes in molecular structure throughout the entirety of a chemical reaction with atomic resolution is a long-term goal in femtochemistry. Although the development of a plethora of ultrafast technique has enabled detailed…

‹ Prev 1 3 4 5 6 7 10 Next ›