Anisotropic electric fluctuations in polar liquids under spherical confinement

Joakim Stenhammar; Per Linse; Gunnar Karlström

doi:10.1080/00268976.2010.506693

Anisotropic electric fluctuations in polar liquids under spherical confinement

Joakim Stenhammar, Per Linse, Gunnar Karlström

Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

Sammanfattning

The anisotropic local electric fluctuations within a nanoscopic sphere of a polar fluid surrounded by vacuum are analysed using dielectric theory and molecular simulation. The electric fluctuations are characterized through the mean-square multipole moments (Q(l)(2)), which are related to the dielectric constant of the fluid. The results show that the fluctuations are suppressed close to the fluid boundary, with a stronger effect on the fluctuations perpendicular as compared to those parallel to the surface. Furthermore, the effect becomes weaker and more short-ranged as the order l of the fluctuating multipole moments is increased. The agreement between the results from dielectric theory and those from molecular simulations are satisfactory, in spite of the inhomogeneous density of the molecular system.

Originalspråk	engelska
Titel på värdpublikation	Molecular Physics
Förlag	Taylor & Francis
Sidor	11-20
Volym	109
DOI	https://doi.org/10.1080/00268976.2010.506693
Status	Published - 2011
Evenemang	8th Liblice Conference on the Statistical Mechanics of LIquids - Brno, Tjeckien Varaktighet: 2010 juni 13 → 2010 juni 18

Publikationsserier

Namn
Nummer	1
Volym	109
ISSN (tryckt)	0026-8976
ISSN (elektroniskt)	1362-3028

Konferens

Konferens	8th Liblice Conference on the Statistical Mechanics of LIquids
Land/Territorium	Tjeckien
Ort	Brno
Period	2010/06/13 → 2010/06/18

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Physical Chemistry 1 (S) (011001006), Theoretical Chemistry (S) (011001039)

Ämnesklassifikation (UKÄ)

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Fysikalisk kemi

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10.1080/00268976.2010.506693

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title = "Anisotropic electric fluctuations in polar liquids under spherical confinement",

abstract = "The anisotropic local electric fluctuations within a nanoscopic sphere of a polar fluid surrounded by vacuum are analysed using dielectric theory and molecular simulation. The electric fluctuations are characterized through the mean-square multipole moments (Q(l)(2)), which are related to the dielectric constant of the fluid. The results show that the fluctuations are suppressed close to the fluid boundary, with a stronger effect on the fluctuations perpendicular as compared to those parallel to the surface. Furthermore, the effect becomes weaker and more short-ranged as the order l of the fluctuating multipole moments is increased. The agreement between the results from dielectric theory and those from molecular simulations are satisfactory, in spite of the inhomogeneous density of the molecular system.",

keywords = "polar liquids, confined liquids, dielectric properties",

author = "Joakim Stenhammar and Per Linse and Gunnar Karlstr{\"o}m",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Physical Chemistry 1 (S) (011001006), Theoretical Chemistry (S) (011001039); 8th Liblice Conference on the Statistical Mechanics of LIquids ; Conference date: 13-06-2010 Through 18-06-2010",

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AU - Stenhammar, Joakim

AU - Linse, Per

AU - Karlström, Gunnar

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Physical Chemistry 1 (S) (011001006), Theoretical Chemistry (S) (011001039)

PY - 2011

Y1 - 2011

N2 - The anisotropic local electric fluctuations within a nanoscopic sphere of a polar fluid surrounded by vacuum are analysed using dielectric theory and molecular simulation. The electric fluctuations are characterized through the mean-square multipole moments (Q(l)(2)), which are related to the dielectric constant of the fluid. The results show that the fluctuations are suppressed close to the fluid boundary, with a stronger effect on the fluctuations perpendicular as compared to those parallel to the surface. Furthermore, the effect becomes weaker and more short-ranged as the order l of the fluctuating multipole moments is increased. The agreement between the results from dielectric theory and those from molecular simulations are satisfactory, in spite of the inhomogeneous density of the molecular system.

AB - The anisotropic local electric fluctuations within a nanoscopic sphere of a polar fluid surrounded by vacuum are analysed using dielectric theory and molecular simulation. The electric fluctuations are characterized through the mean-square multipole moments (Q(l)(2)), which are related to the dielectric constant of the fluid. The results show that the fluctuations are suppressed close to the fluid boundary, with a stronger effect on the fluctuations perpendicular as compared to those parallel to the surface. Furthermore, the effect becomes weaker and more short-ranged as the order l of the fluctuating multipole moments is increased. The agreement between the results from dielectric theory and those from molecular simulations are satisfactory, in spite of the inhomogeneous density of the molecular system.

KW - polar liquids

KW - confined liquids

KW - dielectric properties

U2 - 10.1080/00268976.2010.506693

DO - 10.1080/00268976.2010.506693

M3 - Paper in conference proceeding

VL - 109

SP - 11

EP - 20

BT - Molecular Physics

PB - Taylor & Francis

T2 - 8th Liblice Conference on the Statistical Mechanics of LIquids

Y2 - 13 June 2010 through 18 June 2010

ER -

Anisotropic electric fluctuations in polar liquids under spherical confinement

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