Spreading of a mercury droplet on thin gold films

Avraham Be'er; Yossi Lereah; Aviad Frydman; Haim Taitelbaum

doi:10.1016/s0378-4371(02)01192-5

Spreading of a mercury droplet on thin gold films

Avraham Be'er
, Yossi Lereah
, Aviad Frydman
, Haim Taitelbaum

Department of Physics - at Bar-Ilan University

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

21 Scopus citations

Abstract

The spreading of a small mercury droplet (150 μm) on thin gold films is studied, using an optical microscope enhanced with a differential interference contrast system. The growing interfaces are analyzed in order to determine the roughness (α) and growth (β) exponents. For gold film thickness of 1500 Å we find that α = 0.88 ± 0.03 and β = 0.76 ± 0.03, while for gold thickness of 3000 Å, α = 0.96 ± 0.04 and β = 1.00 ± 0.04. Both sets of exponents satisfy the scaling relation α + α/β = 2. In both systems the roughness exponent α crosses over to a value close to 0.5 in the final stages of the experiment and for relatively long length scales (order of a few microns).

Original language	English
Pages (from-to)	325-330
Number of pages	6
Journal	Physica A: Statistical Mechanics and its Applications
Volume	314
Issue number	1-4
DOIs	https://doi.org/10.1016/s0378-4371(02)01192-5
State	Published - 2002

Bibliographical note

Funding Information:
This research was supported by The Israel Science Foundation (HT 580/98, AF 9041/99), and is part of the Ph.D. thesis of A. Be'er.

Funding

This research was supported by The Israel Science Foundation (HT 580/98, AF 9041/99), and is part of the Ph.D. thesis of A. Be'er.

Funders	Funder number
Israel Science Foundation	HT 580/98, AF 9041/99

Keywords

Diffusion
Reaction
Surface growth
Thin films

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10.1016/s0378-4371(02)01192-5

Cite this

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title = "Spreading of a mercury droplet on thin gold films",

abstract = "The spreading of a small mercury droplet (150 μm) on thin gold films is studied, using an optical microscope enhanced with a differential interference contrast system. The growing interfaces are analyzed in order to determine the roughness (α) and growth (β) exponents. For gold film thickness of 1500 {\AA} we find that α = 0.88 ± 0.03 and β = 0.76 ± 0.03, while for gold thickness of 3000 {\AA}, α = 0.96 ± 0.04 and β = 1.00 ± 0.04. Both sets of exponents satisfy the scaling relation α + α/β = 2. In both systems the roughness exponent α crosses over to a value close to 0.5 in the final stages of the experiment and for relatively long length scales (order of a few microns).",

keywords = "Diffusion, Reaction, Surface growth, Thin films",

author = "Avraham Be'er and Yossi Lereah and Aviad Frydman and Haim Taitelbaum",

note = "Funding Information: This research was supported by The Israel Science Foundation (HT 580/98, AF 9041/99), and is part of the Ph.D. thesis of A. Be'er.",

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doi = "10.1016/s0378-4371(02)01192-5",

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T1 - Spreading of a mercury droplet on thin gold films

AU - Be'er, Avraham

AU - Lereah, Yossi

AU - Frydman, Aviad

AU - Taitelbaum, Haim

N1 - Funding Information: This research was supported by The Israel Science Foundation (HT 580/98, AF 9041/99), and is part of the Ph.D. thesis of A. Be'er.

PY - 2002

Y1 - 2002

N2 - The spreading of a small mercury droplet (150 μm) on thin gold films is studied, using an optical microscope enhanced with a differential interference contrast system. The growing interfaces are analyzed in order to determine the roughness (α) and growth (β) exponents. For gold film thickness of 1500 Å we find that α = 0.88 ± 0.03 and β = 0.76 ± 0.03, while for gold thickness of 3000 Å, α = 0.96 ± 0.04 and β = 1.00 ± 0.04. Both sets of exponents satisfy the scaling relation α + α/β = 2. In both systems the roughness exponent α crosses over to a value close to 0.5 in the final stages of the experiment and for relatively long length scales (order of a few microns).

AB - The spreading of a small mercury droplet (150 μm) on thin gold films is studied, using an optical microscope enhanced with a differential interference contrast system. The growing interfaces are analyzed in order to determine the roughness (α) and growth (β) exponents. For gold film thickness of 1500 Å we find that α = 0.88 ± 0.03 and β = 0.76 ± 0.03, while for gold thickness of 3000 Å, α = 0.96 ± 0.04 and β = 1.00 ± 0.04. Both sets of exponents satisfy the scaling relation α + α/β = 2. In both systems the roughness exponent α crosses over to a value close to 0.5 in the final stages of the experiment and for relatively long length scales (order of a few microns).

KW - Diffusion

KW - Reaction

KW - Surface growth

KW - Thin films

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JO - Physica A: Statistical Mechanics and its Applications

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IS - 1-4

ER -

Spreading of a mercury droplet on thin gold films

Abstract

Bibliographical note

Funding

Keywords

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