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AIChE Annual Meeting, Conference Proceedings
type: Continuant
type: Proceedings
type: Thing
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type: Book
type: Generically Dependent Continuant
type: Document
publication venue for: On the stability of ordered ultrathin organic films: De wetting and Ostwald ripening
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Generically Dependent Continuant
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RDF description of On the stability of ordered ultrathin organic films: De wetting and Ostwald ripening - http://orbis.uaslp.mx/vivo/individual/scopus7847
rights: termsOfUse
date: 2026-08-25T14:37:36
publisher: vivo
type: Document

On the stability of ordered ultrathin organic films: De wetting and Ostwald ripening
type: Generically Dependent Continuant
type: Continuant
freetext keyword: Atomic force microscopy; Crystalline materials; Fatty acids; Microscopic examination; Molecular dynamics; Wetting; Dewetting rings; Fractal channels; Ostwald ripening; Ultrathin organic films; Ultrathin films
crisid: 7848
type: Document
has publication venue: AIChE Annual Meeting, Conference Proceedings
type: Conference Paper
related by: authorship_50178
most specific type: Document
related by: authorship_50180
related by: authorship_50177
estado: published
most specific type: Conference Paper
origen: scopus
type: Article
type: Thing
related by: authorship_50179
type: Entity
page start: 165
date time value: conference paper date 7848
related by: authorship_50181
type: Information Content Entity
EI dscopus: 2-s2.0-33645568791
abstract: We report observations of dewetting by collapsed Langmuir films of fatty acid transferred onto mica. Observations by Brewster angle microscopy at the collapse pressure indicate the coexistence of the monolayer with crystallite multilayer structures. When the collapsed films are transferred onto mica and analyzed by atomic force microscopy heterogeneous dewetting is observed. However a new mode of dewetting is reported where the crystallites act as nucleation centers. In addition, formation of dewetting rings and fractal channels is observed where the material moves from the edge of the rings or channels towards the nucleation center, in contrast to typical heterogeneous dewetting. In the case of the rings, we measured the growth of the dewetting ring and it radius follows a power law with time, which is consistent with a 2D free diffusion mechanism for the mass transport. Ostwald ripening is also observed where the bigger crystallites continue to grow at the expense of the smaller ones. Differences between dewetting patterns are due to different molecular order of the transferred monolayers.

Article
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Information Content Entity
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Conference Paper
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