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Related papers: Hydrogen Absorption at Room Temperature in Nanosca…

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In recent years, metal hydride research has become one of the driving forces of the high-pressure community, as it is believed to hold the key to superconductivity close to ambient temperature. While numerous novel metal hydride compounds…

Hot methane is found in many "cool" sub-stellar astronomical sources including brown dwarfs and exoplanets, as well as in combustion environments on Earth. We report on the first high-resolution laboratory absorption spectra of hot methane…

Solar and Stellar Astrophysics · Physics 2015-10-26 Robert J. Hargreaves , Peter F. Bernath , Jeremy Bailey , Michael Dulick

We study the adsorption behavior of Ga on (0001) GaN surfaces combining experimental specular reflection high-energy electron diffraction with theoretical investigations in the framework of a kinetic model for adsorption and ab initio…

Materials Science · Physics 2009-11-10 C. Adelmann , J. Brault , G. Mula , B. Daudin , L. Lymperakis , J. Neugebauer

We present a method for the measurement of small optical absorption coefficients. The method exploits the deformation of cavity Airy peaks that occur if the cavity contains an absorbing material with a non-zero thermo-refractive coefficient…

The adsorption structure of the molecular switch azobenzene on Ag(111) is investigated by a combination of normal incidence x-ray standing waves and dispersion-corrected density functional theory. The inclusion of non-local collective…

We have investigated the adsorption and desorption of helium near its liquid-vapor critical point in silica aerogels with porosities between 95% and 98%. We used a capacitive measurement technique which allowed us to probe the helium…

Soft Condensed Matter · Physics 2009-11-11 Tobias Herman , James Day , John Beamish

Molecular dynamics simulations have been performed for CO2 capture and separation from CO2/N2/H2O gaseous mixtures in bilayer graphtriyne. The gas uptake capacity, permeability as well as selectivity of the layers were simulated based on an…

Chemical Physics · Physics 2020-08-06 Noelia Faginas-Lago , Yusuf Bramastya Apriliyanto , Andrea Lombardi

The anomalous 21 cm absorption feature reported by EDGES has galvanized the study of scenarios in which dark matter (DM) siphons off thermal energy from the Standard Model (SM) gas. In a departure from the much-discussed models that achieve…

High Energy Physics - Phenomenology · Physics 2020-12-15 Lucas Johns , Seth Koren

Bolometers are a powerful and vital means of detecting light in the IR to THz frequencies, and they have been adopted for a range of uses from astronomical observation to thermal imaging. As uses diversify, there is an increasing demand for…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Andrew Blaikie , David Miller , Benjamín J. Alemán

Nanocomposites comprising of high surface area adsorption materials and nanosized transition metals have emerged as a promising strategy for hydrogen storage application due to their inherent ability to store atomic and molecular forms of…

Materials Science · Physics 2024-05-29 A Flamina , R M Raghavendra , Anandh Subramaniam , Raghupathy Yuvaraj

Sensitive detection of terahertz (THz) radiation is fundamental to progress in spectroscopy, advanced wireless communication, and the realization of emerging quantum technologies. However, the intrinsically low photon energies in the THz…

Short gas pulses introduced in a vacuum chamber have long been utilized to showcase the ultra-low mass resolutions achievable with nanomechanical resonators. The resonance frequency shifts are used as evidence of gas adsorption. However,…

The temperature dependence of hydrogen (H) desorption from Si(100) H-terminated surfaces by a scanning tunneling microscope (STM) is reported for negative sample bias. It is found that the STM induced H desorption rate ($R$) decreases…

Materials Science · Physics 2009-10-31 C. Thirstrup , M. Sakurai , T. Nakayama , K. Stokbro

In a series of papers (i.e., Part I--III), we presented our systematic study on nitrogen gas propagation in an evacuated copper tube cooled by liquid helium. This research aims to gain insights into the coupled heat and mass transfer…

Accelerator Physics · Physics 2023-06-21 Shiran Baoa , Yuan Tang , Qutadah Rababahb , Wei Guo

Using density functional theory we show that an applied electric field substantially improves the hydrogen storage properties of a BN sheet by polarizing the hydrogen molecules as well as the substrate. The adsorption energy of a single H2…

Materials Science · Physics 2016-12-28 J. Zhou , Q. Wang , Q. Sun , P. Jena , X. S. Chen

We report on the magnetic hyperthermia properties of chemically synthesized ferromagnetic 11 and 16 nm Fe(0) nanoparticles of cubic shape displaying the saturation magnetization of bulk iron. The specific absorption rate measured on 16 nm…

Materials Science · Physics 2015-05-13 B. Mehdaoui , A. Meffre , L. -M. Lacroix , J. Carrey , S. Lachaize , M. Respaud , M. Gougeon , B. Chaudret

In this paper we provide a highly accurate value for the binding energy of benzene to proton-ordered crystalline water ice (XIh), as a model for interstellar ices. We compare our computed value to the latest experimental data available from…

Earth and Planetary Astrophysics · Physics 2024-06-28 Victoria H. J. Clark , David M. Benoit , Marie Van de Sande , Catherine Walsh

We have investigated the hydrogen storage capabilities of scandium decorated holey graphyne, a recently synthesized carbon allotrope, by applying density functional theory and molecular dynamics simulations. We have observed that one unit…

Materials Science · Physics 2022-02-11 Vikram Mahamiya , Alok Shukla , Nandini Garg , Brahmananda Chakraborty

Photothermal heterodyne detection is used to record the first room-temperature absorption spectra of single CdSe/ZnS semiconductor nanocrystals. These spectra are recorded in the high cw excitation regime, and the observed bands are…

Optics · Physics 2007-05-23 Stéphane Berciaud , Laurent Cognet , Brahim Lounis

We report on the hydrogen sorption investigation of the mixed alkali cluster intercalated fulleride series NaxLi6-xC60. These compounds are isostructural to Na6C60 and Li6C60 while the cubic lattice parameter is linearly dependent on x. The…

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