Abstract:
We study the interaction energy between two surfaces, one of them flat, the other describable as the composition of a small-amplitude roughness and a slightly curved, smooth surface. The roughness, represented by a spatially random variable, involves Fourier wavelengths shorter than the (local) curvature radii of the smooth component of the surface. After averaging the interaction energy over the roughness distribution, we obtain an expression which only depends on the smooth component. We then approximate that functional by means of a derivative expansion, calculating explicitly the leading- and next-to-leading-order terms in that approximation scheme. We analyze the resulting interplay between shape and roughness corrections for some specific roughness models in the cases of electrostatic and Casimir interactions. © 2015 American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Effect of concurrent geometry and roughness in interacting surfaces |
Autor: | Fosco, C.D.; Lombardo, F.C.; Mazzitelli, F.D. |
Filiación: | Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, Bariloche, R8402AGP, Argentina Departamento de Física Juan José Giambiagi, FCEyN UBA and IFIBA CONICET-UBA, Ciudad Universitaria, Pabellón I, Buenos Aires, 1428, Argentina
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Palabras clave: | Approximation scheme; Casimir interactions; Curvature radii; Interaction energies; Next-to-leading orders; Roughness distributions; Roughness models; Small amplitude; Surface roughness |
Año: | 2015
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Volumen: | 91
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Número: | 2
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DOI: |
http://dx.doi.org/10.1103/PhysRevA.91.022513 |
Título revista: | Physical Review A - Atomic, Molecular, and Optical Physics
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Título revista abreviado: | Phys Rev A
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ISSN: | 10502947
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CODEN: | PLRAA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v91_n2_p_Fosco |
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Citas:
---------- APA ----------
Fosco, C.D., Lombardo, F.C. & Mazzitelli, F.D.
(2015)
. Effect of concurrent geometry and roughness in interacting surfaces. Physical Review A - Atomic, Molecular, and Optical Physics, 91(2).
http://dx.doi.org/10.1103/PhysRevA.91.022513---------- CHICAGO ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D.
"Effect of concurrent geometry and roughness in interacting surfaces"
. Physical Review A - Atomic, Molecular, and Optical Physics 91, no. 2
(2015).
http://dx.doi.org/10.1103/PhysRevA.91.022513---------- MLA ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D.
"Effect of concurrent geometry and roughness in interacting surfaces"
. Physical Review A - Atomic, Molecular, and Optical Physics, vol. 91, no. 2, 2015.
http://dx.doi.org/10.1103/PhysRevA.91.022513---------- VANCOUVER ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D. Effect of concurrent geometry and roughness in interacting surfaces. Phys Rev A. 2015;91(2).
http://dx.doi.org/10.1103/PhysRevA.91.022513