@article{ISI:000381680000041,
 abstract = {Confinement by walls usually produces a strong modulation in the density
of dense liquids near the walls. Using molecular dynamics simulations,
we examine the effects of the density modulation on the spatially
resolved dynamics of a liquid confined between two parallel walls, using
a resolution of a fraction of the interparticle distance in the liquid.
The local dynamics is quantified by the relaxation time associated with
the temporal autocorrelation function of the local density. We find that
this local relaxation time varies in phase with the density modulation.
The amplitude of the spatial modulation of the relaxation time can be
quite large, depending on the characteristics of the wall and
thermodynamic parameters of the liquid. To disentangle the effects of
confinement and density modulation on the spatially resolved dynamics,
we compare the dynamics of a confined liquid with that of an unconfined
one in which a similar density modulation is induced by an external
potential. We find several differences indicating that density
modulation alone cannot account for all the features seen in the
spatially resolved dynamics of confined liquids. We also examine how the
dynamics near a wall depends on the separation between the two walls and
show that the features seen in our simulations persist in the limit of
large wall separation. Published by AIP Publishing.},
 article-number = {054707},
 author = {Saw, Shibu and Dasgupta, Chandan},
 doi = {10.1063/1.4959942},
 eissn = {1089-7690},
 issn = {0021-9606},
 journal = {JOURNAL OF CHEMICAL PHYSICS},
 month = {AUG 7},
 number = {5},
 orcid-numbers = {Saw, Shibu/0000-0002-6010-2477
Dasgupta, Chandan/0000-0002-0302-1881},
 researcherid-numbers = {Dasgupta, Chandan/R-4852-2019
},
 times-cited = {6},
 title = {Role of density modulation in the spatially resolved dynamics of
strongly confined liquids},
 unique-id = {ISI:000381680000041},
 volume = {145},
 year = {2016}
}