Dynamics of hydrogen guests in ice XVII nanopores
Document Type
Article
Publication Date
11-27-2017
Abstract
© 2017 American Physical Society. The present high-resolution inelastic neutron scattering experiment on ice XVII, containing molecular hydrogen with a different ortho/para ratio, allows one to assign the H2 motion spectral bands to rotational and center-of-mass translational transitions of either para- or ortho-H2. Due to its structure, ice XVII confines H2 molecules to move in spiral channels of molecular size. Reported data demonstrate that H2 molecules rotate almost freely in these nanometric channels, though showing larger perturbation than in clathrate hydrates, and perform a translational motion exhibiting two low-frequency excitations. The agreement between the experimental spectra and the corresponding molecular dynamics results clearly enables one to portray a picture of the confined motions of a hydrophobic guest within a metastable ice framework, i.e., ice XVII.
Publication Title
Physical Review Materials
Recommended Citation
Del Rosso, L.,
Celli, M.,
Colognesi, D.,
Rudić, S.,
English, N.,
Burnham, C.,
&
Ulivi, L.
(2017).
Dynamics of hydrogen guests in ice XVII nanopores.
Physical Review Materials,
1(6).
http://doi.org/10.1103/PhysRevMaterials.1.065602
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/10113