Fractal Surface Characterization

Implications for Plasmon Polariton Scattering

Sergei I. Bozhevolnyi, Brian Vohnsen, A. V. Zayats, I. I Smolyaninov

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

We compare the scattering of surface plasmon polaritons (SPPs) at relatively smooth and rough surfaces of gold films and relate the difference in the SPP behaviour to the difference in fractality of the studied surfaces. The rough surface, which results in the strong localization of SPPs, is found to have a fractal structure with a normalized fractal dimension D ≈ 2.26 in the spatial range 80–640 nm. It is shown that the smooth surface, which supports well-pronounced propagating SPPs, cannot be viewed as a fractal structure for discretization steps exceeding 80 nm. We conclude that in order for SPPs to be localized by surface roughness, the surface should exhibit a fractal structure in a sufficiently large range of sizes around the SPP wavelength.
OriginalsprogEngelsk
TidsskriftSurface Science
Vol/bind356
Udgave nummer1-3
Sider (fra-til)268-274
ISSN0039-6028
DOI
StatusUdgivet - 1996
Udgivet eksterntJa

Fingeraftryk

Fractals
polaritons
fractals
Scattering
scattering
Fractal dimension
Gold
surface roughness
Surface roughness
gold
Wavelength

Citer dette

Bozhevolnyi, Sergei I. ; Vohnsen, Brian ; Zayats, A. V. ; Smolyaninov, I. I. / Fractal Surface Characterization : Implications for Plasmon Polariton Scattering. I: Surface Science. 1996 ; Bind 356, Nr. 1-3. s. 268-274.
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abstract = "We compare the scattering of surface plasmon polaritons (SPPs) at relatively smooth and rough surfaces of gold films and relate the difference in the SPP behaviour to the difference in fractality of the studied surfaces. The rough surface, which results in the strong localization of SPPs, is found to have a fractal structure with a normalized fractal dimension D ≈ 2.26 in the spatial range 80–640 nm. It is shown that the smooth surface, which supports well-pronounced propagating SPPs, cannot be viewed as a fractal structure for discretization steps exceeding 80 nm. We conclude that in order for SPPs to be localized by surface roughness, the surface should exhibit a fractal structure in a sufficiently large range of sizes around the SPP wavelength.",
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Fractal Surface Characterization : Implications for Plasmon Polariton Scattering. / Bozhevolnyi, Sergei I.; Vohnsen, Brian; Zayats, A. V.; Smolyaninov, I. I.

I: Surface Science, Bind 356, Nr. 1-3, 1996, s. 268-274.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Fractal Surface Characterization

T2 - Implications for Plasmon Polariton Scattering

AU - Bozhevolnyi, Sergei I.

AU - Vohnsen, Brian

AU - Zayats, A. V.

AU - Smolyaninov, I. I

PY - 1996

Y1 - 1996

N2 - We compare the scattering of surface plasmon polaritons (SPPs) at relatively smooth and rough surfaces of gold films and relate the difference in the SPP behaviour to the difference in fractality of the studied surfaces. The rough surface, which results in the strong localization of SPPs, is found to have a fractal structure with a normalized fractal dimension D ≈ 2.26 in the spatial range 80–640 nm. It is shown that the smooth surface, which supports well-pronounced propagating SPPs, cannot be viewed as a fractal structure for discretization steps exceeding 80 nm. We conclude that in order for SPPs to be localized by surface roughness, the surface should exhibit a fractal structure in a sufficiently large range of sizes around the SPP wavelength.

AB - We compare the scattering of surface plasmon polaritons (SPPs) at relatively smooth and rough surfaces of gold films and relate the difference in the SPP behaviour to the difference in fractality of the studied surfaces. The rough surface, which results in the strong localization of SPPs, is found to have a fractal structure with a normalized fractal dimension D ≈ 2.26 in the spatial range 80–640 nm. It is shown that the smooth surface, which supports well-pronounced propagating SPPs, cannot be viewed as a fractal structure for discretization steps exceeding 80 nm. We conclude that in order for SPPs to be localized by surface roughness, the surface should exhibit a fractal structure in a sufficiently large range of sizes around the SPP wavelength.

U2 - 10.1016/0039-6028(96)00012-X

DO - 10.1016/0039-6028(96)00012-X

M3 - Journal article

VL - 356

SP - 268

EP - 274

JO - Surface Science

JF - Surface Science

SN - 0039-6028

IS - 1-3

ER -