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  Morphological transitions during melting of small cylindrical aggregates

Jin, C., & Riegler, H. (2016). Morphological transitions during melting of small cylindrical aggregates. Journal of Physical Chemistry C, 120(30), 16815-16821. doi:10.1021/acs.jpcc.6b05434.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-85F5-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-85F7-0
Genre: Journal Article

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 Creators:
Jin, Chenyu1, Author              
Riegler, H., Author
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1Group Active soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063307              

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 Abstract: Most studies on melting under confinement focus only on the solid and liquid melt phases. Despite of its ubiquity, contributions from the capillary interface (liquid/vapor interface) are often neglected. In this study the melting behavior of small cylindrical aggregates in vapor attached to planar surfaces is analyzed. For the assumed boundary conditions (cylindrical solid with a non wetting top plane and a wettable side wall) solid and the liquid phases can coexist within a certain temperature range. Due to capillary instability, the liquid phase can form either an axisymmetric rouloid morphology or, above a certain threshold liquid volume fraction, a bulge coexisting with a rouloid-like section. The corresponding melting points are different. The analysis explicitly describes the behavior of a real system of small aggregates of long chain alkanes on planar substrates. It also gives qualitative insights into the melting behavior of small aggregates with anisotropic wetting behaviors in general. It reveals in particular how melting points and melting pathways depend on the energetic respectively morphological pathways leading to complete melting.

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Language(s): eng - English
 Dates: 2016-07-052016-08-04
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1021/acs.jpcc.6b05434
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Title: Journal of Physical Chemistry C
Source Genre: Journal
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Pages: - Volume / Issue: 120 (30) Sequence Number: - Start / End Page: 16815 - 16821 Identifier: -