Next Article in Journal
Thermally Sprayed Aluminum Coatings for the Protection of Subsea Risers and Pipelines Carrying Hot Fluids
Next Article in Special Issue
Cylindrical Three-Dimensional Porous Anodic Alumina Networks
Previous Article in Journal
Emulsion Polymerization of Tung Oil-Based Latexes with Asolectin as a Biorenewable Surfactant
Previous Article in Special Issue
Low Energy Atomic Photodesorption from Organic Coatings
Open AccessArticle

Statistical Contact Angle Analyses with the High-Precision Drop Shape Analysis (HPDSA) Approach: Basic Principles and Applications

by *,† and *,†
Department of Physical Chemistry, Saarland University, Saarbrücken 66123, Germany
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Massimo Innocenti
Coatings 2016, 6(4), 57; https://doi.org/10.3390/coatings6040057
Received: 19 September 2016 / Revised: 20 October 2016 / Accepted: 28 October 2016 / Published: 6 November 2016
(This article belongs to the Special Issue Advances in Coatings Characterization)
Surface science, which includes the preparation, development and analysis of surfaces and coatings, is essential in both fundamental and applied as well as in engineering and industrial research. Contact angle measurements using sessile drop techniques are commonly used to characterize coated surfaces or surface modifications. Well-defined surfaces structures at both nanoscopic and microscopic level can be achieved but the reliable characterization by means of contact angle measurements and their interpretation often remains an open question. Thus, we focused our research effort on one main problem of surface science community, which is the determination of correct and valid definitions and measurements of contact angles. In this regard, we developed the high-precision drop shape analysis (HPDSA), which involves a complex transformation of images from sessile drop experiments to Cartesian coordinates and opens up the possibility of a physically meaningful contact angle calculation. To fulfill the dire need for a reproducible contact angle determination/definition, we developed three easily adaptable statistical analyses procedures. In the following, the basic principles of HPDSA will be explained and applications of HPDSA will be illustrated. Thereby, the unique potential of this analysis approach will be illustrated by means of selected examples. View Full-Text
Keywords: contact angle; advancing angle; receding angle; wetting; drop shape; hydrophobic; hydrophilic; superhydrophobic contact angle; advancing angle; receding angle; wetting; drop shape; hydrophobic; hydrophilic; superhydrophobic
Show Figures

Graphical abstract

MDPI and ACS Style

Heib, F.; Schmitt, M. Statistical Contact Angle Analyses with the High-Precision Drop Shape Analysis (HPDSA) Approach: Basic Principles and Applications. Coatings 2016, 6, 57.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop