Results 91 to 100 of about 242,463 (306)

Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance [PDF]

open access: yes, 2014
We report the experimental realization of a single-species atomic four-wave mixing process with BEC collisions for which the angular distribution of scattered atom pairs is not isotropic, despite the collisions being in the $s$-wave regime.
Boiron, Denis   +6 more
core   +7 more sources

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Ferromagnetic resonance linewidth and two-magnon scattering in Fe1-xGdx thin films

open access: yesAIP Advances, 2017
Magnetization dynamics of Fe1-xGdx thin films (0 ≤ x ≤ 22%) has been investigated by ferromagnetic resonance (FMR). Out-of-plane magnetic field orientation dependence of resonance field and linewidth has been measured.
Sheng Jiang   +6 more
doaj   +1 more source

Laser induced diffuse reflectance imaging – Monte Carlo simulation of backscattering measured on the surface

open access: yesMethodsX, 2020
The Monte Carlo simulation algorithm of photon trajectory computation is implemented in object oriented R code. Diffuse reflectance, also called backscattering, is modeled in semi-infinite homogeneous media. Spatial photon flux leaving the surface of the
László Baranyai
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum   +5 more
wiley   +1 more source

Effect of molecular anisotropy on the intensity and degree of polarization of light scattered from model atmospheres [PDF]

open access: yes
Computations of the intensity, flux, degree of polarization, and the positions of neutral points are presented for models of the terrestrial gaseous and hazy atmospheres by incorporating the molecular anisotropy due to air in the Rayleigh scattering ...
Bahethi, O. P., Fraser, R. S.
core   +1 more source

Acoustic impedance and interface phonon scattering in Bi$_2$Te$_3$ and other semiconducting materials

open access: yes, 2012
We present first principles calculations of the phonon dispersions of Bi2Te3 and discuss these in relation to the acoustic phonon interface scattering in ceramics.
Chen, Xin   +2 more
core   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Asymmetrical bonding in liquid Bi disentangled by inelastic X-ray scattering

open access: yesEPJ Web of Conferences, 2017
The structure of liquid Bi has been debated in relationship with the Peierls distortion, as crystalline Bi takes A7 structure. A recent ab initio molec- ular dynamics simulation for liquid Bi predicted a flat-topped profile of the acoustic dispersion ...
Inui Masanori   +7 more
doaj   +1 more source

Peak positions and shapes in neutron pair correlation functions from powders of highly anisotropic crystals

open access: yes, 2000
The effect of the powder average on the peak shapes and positions in neutron pair distribution functions of polycrystalline materials is examined. It is shown that for highly anisotropic crystals, the powder average leads to shifts in peak positions and ...
A. R. Bishop   +29 more
core   +1 more source

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