Size fluctuations of near critical and Gibbs free energy for nucleation of BDA on Cu(001)

Daniel Schwarz, Raoul van Gastel, Henricus J.W. Zandvliet, Bene Poelsema

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Abstract

We present a low-energy electron microscopy study of nucleation and growth of BDA on Cu(001) at low supersaturation. At sufficiently high coverage, a dilute BDA phase coexists with c(8×8) crystallites. The real-time microscopic information allows a direct visualization of near-critical nuclei, determination of the supersaturation and the line tension of the crystallites, and, thus, derivation of the Gibbs free energy for nucleation. The resulting critical nucleus size nicely agrees with the measured value. Nuclei up to 4-6 times larger still decay with finite probability, urging reconsideration of the classic perception of a critical nucleus.
Original languageEnglish
Article number016101
Pages (from-to)016101-
Number of pages5
JournalPhysical review letters
Volume109
Issue number1
DOIs
Publication statusPublished - 2012

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Gibbs free energy
nucleation
nuclei
supersaturation
crystallites
electron microscopy
derivation
decay
energy

Keywords

  • METIS-287266
  • IR-81096

Cite this

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abstract = "We present a low-energy electron microscopy study of nucleation and growth of BDA on Cu(001) at low supersaturation. At sufficiently high coverage, a dilute BDA phase coexists with c(8×8) crystallites. The real-time microscopic information allows a direct visualization of near-critical nuclei, determination of the supersaturation and the line tension of the crystallites, and, thus, derivation of the Gibbs free energy for nucleation. The resulting critical nucleus size nicely agrees with the measured value. Nuclei up to 4-6 times larger still decay with finite probability, urging reconsideration of the classic perception of a critical nucleus.",
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Size fluctuations of near critical and Gibbs free energy for nucleation of BDA on Cu(001). / Schwarz, Daniel; van Gastel, Raoul; Zandvliet, Henricus J.W.; Poelsema, Bene.

In: Physical review letters, Vol. 109, No. 1, 016101, 2012, p. 016101-.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Size fluctuations of near critical and Gibbs free energy for nucleation of BDA on Cu(001)

AU - Schwarz, Daniel

AU - van Gastel, Raoul

AU - Zandvliet, Henricus J.W.

AU - Poelsema, Bene

PY - 2012

Y1 - 2012

N2 - We present a low-energy electron microscopy study of nucleation and growth of BDA on Cu(001) at low supersaturation. At sufficiently high coverage, a dilute BDA phase coexists with c(8×8) crystallites. The real-time microscopic information allows a direct visualization of near-critical nuclei, determination of the supersaturation and the line tension of the crystallites, and, thus, derivation of the Gibbs free energy for nucleation. The resulting critical nucleus size nicely agrees with the measured value. Nuclei up to 4-6 times larger still decay with finite probability, urging reconsideration of the classic perception of a critical nucleus.

AB - We present a low-energy electron microscopy study of nucleation and growth of BDA on Cu(001) at low supersaturation. At sufficiently high coverage, a dilute BDA phase coexists with c(8×8) crystallites. The real-time microscopic information allows a direct visualization of near-critical nuclei, determination of the supersaturation and the line tension of the crystallites, and, thus, derivation of the Gibbs free energy for nucleation. The resulting critical nucleus size nicely agrees with the measured value. Nuclei up to 4-6 times larger still decay with finite probability, urging reconsideration of the classic perception of a critical nucleus.

KW - METIS-287266

KW - IR-81096

U2 - 10.1103/PhysRevLett.109.016101

DO - 10.1103/PhysRevLett.109.016101

M3 - Article

VL - 109

SP - 016101-

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

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M1 - 016101

ER -