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The rate of nuclear muon capture by the proton has been measured using a new experimental technique based on a time projection chamber operating in ultra-clean, deuterium-depleted hydrogen gas at 1 MPa pressure. The capture rate was…

In the Halo21 absorption modeling challenge we generated synthetic absorption spectra of the circumgalactic medium (CGM), and attempted to estimate the metallicity, temperature, and density (Z, T, and nH) of the underlying gas using…

The hydrogen dimer, (H2)2, is among the most weakly bound van der Waals complexes and a prototype species for first principles ab initio studies. The detection of the (H2)2 infrared absorption spectrum was reported more than thirty years…

Chemical Physics · Physics 2024-07-29 H. Fleurbaey , S. Kassi , A. Campargue

Water (H2O) ice is an important solid constituent of many astrophysical environments. To comprehend the role of such ices in the chemistry and evolution of dense molecular clouds and comets, it is necessary to understand the freeze-out,…

From first-principles calculations, we predict that a single ethylene molecule can form a stable complex with two transition metals (TM) such as Ti. The resulting TM-ethylene complex then absorbs up to ten hydrogen molecules, reaching to…

Other Condensed Matter · Physics 2009-11-11 Engin Durgun , Salim Ciraci , W. Zhou , Taner Yildirim

In their article, Wang et al. [1] report a new scheme for THz heterodyne detection using a laser-driven LTG-GaAs photomixer [2, 3] and make the impressive claim of achieving near quantum-limited sensitivity at room temperature.…

Instrumentation and Methods for Astrophysics · Physics 2019-08-01 J. Zmuidzinas , B. Karasik , A. R. Kerr , M. Pospieszalski

The principal Hugoniot for liquid hydrogen was obtained up to 55 GPa under laser-driven shock loading. Pressure and density of compressed hydrogen were determined by impedance-matching to a quartz standard. The shock temperature was…

Hydrogen arranges at dislocations in palladium to form nanoscale hydrides, changing the vibrational spectra. An ab initio hydrogen potential energy model versus Pd neighbor distances allows us to predict the vibrational excitations for H…

Materials Science · Physics 2011-06-01 Dallas R. Trinkle , Hyunsu Ju , Brent J. Heuser , Terrence J. Udovic

As high-average power ultrafast lasers become increasingly available for nonlinear conversion, the temperature dependence of the material properties of nonlinear crystals becomes increasingly relevant. Here, we present temperature-dependent…

Optics · Physics 2023-08-29 Samira Mansourzadeh , Tim Vogel , Mostafa Shalaby , Clara J. Saraceno

In order to realize applications of hydrogen-adsorbed graphene, a main issue is how to control hydrogen adsorption/desorption at room temperature. In this study, we demonstrate the possibility to tune hydrogen adsorption on graphene by…

Mesoscale and Nanoscale Physics · Physics 2019-05-07 Yuya Murata , Arrigo Calzolari , Stefan Heun

Using first-principles density functional theory simulations, we have observed that the scandium decorated C$_{24}$ fullerene can adsorb up to six hydrogen molecules with an average adsorption energy of -0.35 eV per H$_2$ and average…

Materials Science · Physics 2021-11-05 Vikram Mahamiya , Alok Shukla , Brahmananda Chakraborty

We study the low temperature properties of a single layer of parahydrogen adsorbed on graphene, by means of Quantum Monte Carlo simulations. The computed phase diagram is very similar to that of helium on the same substrate, featuring…

Mesoscale and Nanoscale Physics · Physics 2018-05-02 Marisa Dusseault , Massimo Boninsegni

Recently, Liu et al. reported that Ti2CTx MXene have ultra-high hydrogen storage capacity (8.8 wt.%) at room temperature. For the purpose to clearly understand the hydrogen storage (H-storage), the composition of studied samples should be…

Materials Science · Physics 2021-04-28 Sen Jin , Qianku Hu , Aiguo Zhou

We produce YbF molecules with a density of 10^18 m^-3 using laser ablation inside a cryogenically-cooled cell filled with a helium buffer gas. Using absorption imaging and absorption spectroscopy we study the formation, diffusion,…

The technique of laser ablation in liquids is applied to produce of Boron-containing nanoparticles from ablation of a Fe$_2$B bulk target enriched in 10B isotope. Laser ablation of the target in liquid isopropanol results in partial…

This study investigates into the adsorption sensing capabilities of single-walled (5,5) boron nitride nanotubes (BNNTs) towards environmental pollutant gas molecules, including CH2, SO2, NH3, H2Se, CO2 and CS2. Employing a linear…

Computational Physics · Physics 2025-11-07 Chaithanya Purushottam Bhat , Joy Mukherjee , Antara Banerjee , Debashis Bandyopadhyay

Hydrocarbon tribopolymer, a type of polymer formed due to friction between surfaces, is a major impediment to the development of micro- and nanoelectromechanical systems (MEMS/NEMS) devices for industrial application. Tribopolymer buildup…

Materials Science · Physics 2016-12-12 Hyeong-Seok D. Kim , Jing Yang , Yubo Qi , Andrew M. Rappe

Thermal conductivity measurement techniques for materials with nanoscale dimensions require fabrication of very complicated devices or their applicability is limited to a class of materials. Discovery of new methods with high thermal…

Thermal properties have an outsized impact on efficiency and sensitivity of devices with nanoscale structures, such as in integrated electronic circuits. A number of thermal conductivity measurements for semiconductor nanostructures exist,…

We report on a new optical implementation of primary gas thermometry based on laser absorption spectrometry in the near infrared. The method consists in retrieving the Doppler broadening from highly accurate observations of the line shape…

Statistical Mechanics · Physics 2009-11-13 G. Casa , A. Castrillo , G. Galzerano , R. Wehr , A. Merlone , D. Di Serafino , P. Laporta , L. Gianfrani
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