Results 41 to 50 of about 1,503 (138)

Diffusive Motion in Stage-1 and Stage-2 Li-Graphite Intercalation Compounds: Results of β-NMR and Quasielastic Neutron Scattering [PDF]

open access: yes, 1995
Investigations of Li diffusion in stage-1 and stage-2 Li graphite intercalation compounds with neutron time-of-flight and backscattering techniques and β-radiation detected nuclear magnetic resonance/relaxation (β-NMR) with the nucleus 8Li(T1/2 = 0.8 s ...
Heitjans, Paul, Schirmei, A.
core   +2 more sources

Diffusion and migration in polymer electrolytes [PDF]

open access: yes, 2020
Mixtures of neutral polymers and lithium salts have the potential to serve as electrolytes in next-generation rechargeable Li-ion batteries. The purpose of this review is to expose the delicate interplay between polymer-salt interactions at the segmental
Balsara, NP   +4 more
core  

Hydration Water Dynamics and Instigation of Protein Structural Relaxation [PDF]

open access: yes, 2003
The molecular mechanism of the solvent motion that is required to instigate the protein structural relaxation above a critical hydration level or transition temperature has yet to be determined. In this work we use quasi-elastic neutron scattering (QENS)
Head-Gordon, Teresa   +2 more
core   +2 more sources

Ultrafast Molecular Transport on Carbon Surfaces: The Diffusion of Ammonia on Graphite [PDF]

open access: yes, 2017
We present a combined experimental and theoretical study of the self-diffusion of ammonia on exfoliated graphite. Using neutron time-of-flight spectroscopy we are able to resolve the ultrafast diffusion process of adsorbed ammonia, NH$_3$, on graphite ...
Calvo-Almazán, Irene   +6 more
core   +2 more sources

Proton diffusivity in the BaZr0.9Y0.1O3−δ proton conductor [PDF]

open access: yes, 2018
The thermally activated proton diffusion in BaZr0.9Y0.1O3−δ was studied with electrochemical impedance spectroscopy (IS) and quasi-elastic neutron scattering (QENS) in the temperature range 300-900K.
Braun, Artur   +9 more
core  

The dynamics of methylammonium ions in hybrid organic-inorganic perovskite solar cells

open access: yes, 2015
Methylammonium lead iodide perovskite can make high-efficiency solar cells, which also show an unexplained photocurrent hysteresis dependent on the device-poling history.
Barnes, PRF   +12 more
core   +1 more source

Introduction to Quasielastic Neutron Scattering [PDF]

open access: yes, 2017
This tutorial introduction has been written for people who are not specialized in neutron scattering or in other scattering methods but who are interested and would like to get an impression and learn about the method of Quasielastic Neutron Scattering ...
Embs, Jan Peter   +2 more
core  

Picosecond Dynamic Heterogeneity, Hopping and Johari-Goldstein Relaxation in Glassforming Liquids

open access: yes, 2014
We show that incoherent quasi-elastic neutron scattering (QENS) from molecular liquids reveals a two-state dynamic heterogeneity on a 1 ps timescale, where molecules are either highly confined or are free to undergo relatively large excursions.
Cicerone, Marcus T.   +2 more
core   +1 more source

Elastic Recoil Detection Analysis [PDF]

open access: yes, 2016
International audienceAmong the family of Ion Beam Analysis techniques for material characterization, Elastic Recoil Detection Analysis (ERDA) exploits the spectroscopy of recoil nuclei moving under the impact of the ions of the beam.
Berger, Pascal   +2 more
core   +3 more sources

Refined Structure of Metastable Ice XVII from Neutron Diffraction Measurements

open access: yes, 2016
The structure of the recently identified metastable ice XVII, obtained by release of hydrogen from the C$_0$ D$_2$O-H$_2$ compound (filled ice), has been accurately measured by neutron powder diffraction.
Celli, Milva   +5 more
core   +2 more sources

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