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  Morphological Transformation of Surface Femtodroplets upon Dissolution

Peng, S., Pinchasik, B.-E., Hao, H., Möhwald, H., & Zhang, X. (2017). Morphological Transformation of Surface Femtodroplets upon Dissolution. The Journal of Physical Chemistry Letters, 8(3), 584-590. doi:10.1021/acs.jpclett.6b02861.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-4282-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-41EB-D
Genre: Journal Article
Alternative Title : The Journal of Physical Chemistry Letters

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 Creators:
Peng, Shuhua, Author
Pinchasik, Bat-El, Author
Hao, Hao, Author
Möhwald, Helmuth1, Author              
Zhang, Xuehua, Author
Affiliations:
1Grenzflächen, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863287              

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 Abstract: Constructing controllable liquid patterns with high resolution and accuracy is of great importance in droplet depositions for a range of applications. Simple surface chemical micropatterns have been popularly used to regulate the shape of liquid droplets and the final structure of deposited materials. In this work, we study the morphological evolution of a dissolving femtoliter droplet pinned on multiple microdomains. On the basis of minimization of interfacial energy, the numerical simulations predict various symmetric droplet profiles in equilibrium at different liquid volumes. However, our experimental results show both symmetric and asymmetric shapes of droplets due to contact line pinning and symmetry breaking during droplet dissolution. Upon slow volume reduction, the deposited microdroplet arrays on one single type of simple surface prepatterns spontaneously morphed into a series of complex regular 3D shapes. The findings in this work offer insights into design and prepararion of the rich and complex morphology of liquid patterns via simple surface premicropatterns.

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 Dates: 2017-01-122017-02-02
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1021/acs.jpclett.6b02861
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Title: The Journal of Physical Chemistry Letters
  Abbreviation : J. Phys. Chem. Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 8 (3) Sequence Number: - Start / End Page: 584 - 590 Identifier: ISSN: 1948-7185