Casimir-Lifshitz interaction between ZnO and SiO 2 nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects

Mathias Boström; Bo E. Sernelius; Gustavo Baldissera; Clas Persson; Barry W. Ninham

doi:10.1103/PhysRevA.85.044702

Casimir-Lifshitz interaction between ZnO and SiO ₂ nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects

Mathias Boström^*, Bo E. Sernelius, Gustavo Baldissera, Clas Persson, Barry W. Ninham

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We consider the interaction between a ZnO nanorod and a SiO ₂ nanorod in bromobenzene. Using optical data for the interacting objects and ambient we calculate the force (from short-range attractive van der Waals force to intermediate-range repulsive Casimir-Lifshitz force to long-range entropically driven attraction). The nonretarded van der Waals interaction is attractive at all separations. We demonstrate a retardation-driven repulsion at intermediate separations. At short separations (in the nonretarded limit) and at large separations (in the classical limit) the interaction is attractive. These effects can be understood from an analysis of multiple crossings of the dielectric functions of the three media as functions of imaginary frequencies.

Original language	English
Article number	044702
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	85
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.85.044702
Publication status	Published - 11 Apr 2012

Access to Document

10.1103/PhysRevA.85.044702

Cite this

@article{a2453d50adca4e858030d285888ee68b,

title = "Casimir-Lifshitz interaction between ZnO and SiO 2 nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects",

abstract = "We consider the interaction between a ZnO nanorod and a SiO 2 nanorod in bromobenzene. Using optical data for the interacting objects and ambient we calculate the force (from short-range attractive van der Waals force to intermediate-range repulsive Casimir-Lifshitz force to long-range entropically driven attraction). The nonretarded van der Waals interaction is attractive at all separations. We demonstrate a retardation-driven repulsion at intermediate separations. At short separations (in the nonretarded limit) and at large separations (in the classical limit) the interaction is attractive. These effects can be understood from an analysis of multiple crossings of the dielectric functions of the three media as functions of imaginary frequencies.",

author = "Mathias Bostr{\"o}m and Sernelius, {Bo E.} and Gustavo Baldissera and Clas Persson and Ninham, {Barry W.}",

year = "2012",

month = apr,

day = "11",

doi = "10.1103/PhysRevA.85.044702",

language = "English",

volume = "85",

journal = "Physical Review A - Atomic, Molecular, and Optical Physics",

issn = "1050-2947",

publisher = "American Physical Society",

number = "4",

}

Casimir-Lifshitz interaction between ZnO and SiO ₂ nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects. / Boström, Mathias; Sernelius, Bo E.; Baldissera, Gustavo et al.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 85, No. 4, 044702, 11.04.2012.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Casimir-Lifshitz interaction between ZnO and SiO 2 nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects

AU - Boström, Mathias

AU - Sernelius, Bo E.

AU - Baldissera, Gustavo

AU - Persson, Clas

AU - Ninham, Barry W.

PY - 2012/4/11

Y1 - 2012/4/11

N2 - We consider the interaction between a ZnO nanorod and a SiO 2 nanorod in bromobenzene. Using optical data for the interacting objects and ambient we calculate the force (from short-range attractive van der Waals force to intermediate-range repulsive Casimir-Lifshitz force to long-range entropically driven attraction). The nonretarded van der Waals interaction is attractive at all separations. We demonstrate a retardation-driven repulsion at intermediate separations. At short separations (in the nonretarded limit) and at large separations (in the classical limit) the interaction is attractive. These effects can be understood from an analysis of multiple crossings of the dielectric functions of the three media as functions of imaginary frequencies.

AB - We consider the interaction between a ZnO nanorod and a SiO 2 nanorod in bromobenzene. Using optical data for the interacting objects and ambient we calculate the force (from short-range attractive van der Waals force to intermediate-range repulsive Casimir-Lifshitz force to long-range entropically driven attraction). The nonretarded van der Waals interaction is attractive at all separations. We demonstrate a retardation-driven repulsion at intermediate separations. At short separations (in the nonretarded limit) and at large separations (in the classical limit) the interaction is attractive. These effects can be understood from an analysis of multiple crossings of the dielectric functions of the three media as functions of imaginary frequencies.

UR - http://www.scopus.com/inward/record.url?scp=84859797432&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.85.044702

DO - 10.1103/PhysRevA.85.044702

M3 - Article

SN - 1050-2947

VL - 85

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 4

M1 - 044702

ER -

Casimir-Lifshitz interaction between ZnO and SiO ₂ nanorods in bromobenzene turns repulsive at intermediate separations due to retardation effects

Abstract

Access to Document

Other files and links

Fingerprint

Cite this