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Volumn 26, Issue 9, 2010, Pages 6394-6399

Phase transition broadening due to interfacial premelting: A new quantitative access to intermolecular interactions within submonolayer films at solid/vapor interfaces

Author keywords

[No Author keywords available]

Indexed keywords

ALCOHOL MOLECULES; EXPERIMENTAL OBSERVATION; INTERMOLECULAR INTERACTIONS; LONG CHAIN ALKANE; MOLECULAR ORGANIZATION; MOLECULARLY THIN FILMS; OH GROUP; ORDERS OF MAGNITUDE; PRE-MELTING; QUANTITATIVE DATA; SILICA SURFACE; SUBMONOLAYER FILMS; SURFACE COVERAGES; VAN DER WAALS;

EID: 77951699488     PISSN: 07437463     EISSN: 15205827     Source Type: Journal    
DOI: 10.1021/la903184c     Document Type: Article
Times cited : (12)

References (33)
  • 11
    • 77951671769 scopus 로고    scopus 로고
    • This might play a role in sintering processes. Sintering typically involves small particles, but often they may not be small enough to directly affect the melting behavior due to the "usual" Gibbs-Thompson effect. In powders of heterogeneous composition, for instance, interfacial premelting might induce that one component wets the adjacent particle of the other component even without any curvature effect, leading to some mechanical cohesion between the two particles
    • This might play a role in sintering processes. Sintering typically involves small particles, but often they may not be small enough to directly affect the melting behavior due to the "usual" Gibbs-Thompson effect. In powders of heterogeneous composition, for instance, interfacial premelting might induce that one component wets the adjacent particle of the other component even without any curvature effect, leading to some mechanical cohesion between the two particles.
  • 15
    • 77951683892 scopus 로고    scopus 로고
    • -3 mol/L leads to a coverage equivalent to one closed monolayer. A closed monolayer means a closed layer with all molecules densely packed (as a solid). In the case of alkanes, in a closed monolayer all the molecules are oriented normal to the interface and the thickness of the monolayer is roughly equal to the all-trans length of the molecules (see ref (13)). The alcohol molecules are tilted in a closed monolayer. Accordingly, the monolayer thickness is somewhat less than the alcohol all-trans length
    • -3 mol/L leads to a coverage equivalent to one closed monolayer. A closed monolayer means a closed layer with all molecules densely packed (as a solid). In the case of alkanes, in a closed monolayer all the molecules are oriented normal to the interface and the thickness of the monolayer is roughly equal to the all-trans length of the molecules (see ref (13)). The alcohol molecules are tilted in a closed monolayer. Accordingly, the monolayer thickness is somewhat less than the alcohol all-trans length.
  • 16
  • 18
    • 77951697099 scopus 로고    scopus 로고
    • This is valid even for fractal shaped domains because the fractality breaks down below the micrometer scale. The domain edges are smooth in the submicron range
    • This is valid even for fractal shaped domains because the fractality breaks down below the micrometer scale. The domain edges are smooth in the submicron range.
  • 21
    • 77951694699 scopus 로고    scopus 로고
    • According to recent X-ray reflectivity and AFM measurements from us, to be published
    • According to recent X-ray reflectivity and AFM measurements from us, to be published.
  • 22
    • 77951672750 scopus 로고    scopus 로고
    • See movie in Supporting Information
    • See movie in Supporting Information.
  • 23
    • 77951688565 scopus 로고    scopus 로고
    • For alcohols this relaxation is orders of magnitude slower than for the alkanes. Typically it takes minutes instead of seconds to establish equilibrium
    • For alcohols this relaxation is orders of magnitude slower than for the alkanes. Typically it takes minutes instead of seconds to establish equilibrium.
  • 24
    • 77951688729 scopus 로고    scopus 로고
    • The term "non-solid" is used here to express the state of the molecules which form the film between the solid domains. The molecules can be in a liquid-like or a gaseous-like state depending on the overall coverage and temperature (see below)
    • The term "non-solid" is used here to express the state of the molecules which form the film between the solid domains. The molecules can be in a liquid-like or a gaseous-like state depending on the overall coverage and temperature (see below).
  • 29
    • 77951671421 scopus 로고    scopus 로고
    • A 2d gas behavior in this range of coverages has been suggested before already for the alkanes (see ref (1)). However, the data presented here corroborate this assumption quantitatively
    • A 2d gas behavior in this range of coverages has been suggested before already for the alkanes (see ref (1)). However, the data presented here corroborate this assumption quantitatively.
  • 32


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.