journal article·2020-06-01Open access

Aero-ZnS architectures with dual hydrophilic–hydrophobic properties for microfluidic applications

Irina Plesco, Tudor Braniste, Niklas Wolff, Leonid Gorceac, Viola Duppel, Boris Cinic, Yogendra Kumar Mishra, Andrei Sarua, Rainer Adelung, Lorenz Kienle, Ion Tiginyanu

APL Materials· Volume 8· Issue 6

Abstract

Here, we report on a new aero-material, called aero-ZnS, representing self-organized architectures made of ZnS hollow micro-tetrapod structures with nanoscale thin walls. The fabrication process is based on the hydride vapor phase epitaxy of CdS on sacrificial micro-tetrapods of ZnO with simultaneous or subsequent transformation of CdS into ZnS and removal of the sacrificial ZnO crystals. The nanostructure of the obtained ZnS hollow micro-tetrapods exhibits the polytypic intergrowth of wurtzite- and sphalerite-type phases perpendicular to their close packed planes. The inner surface of the micro-tetrapod walls preserves oxygen sites, as demonstrated by imaging based on electron energy-loss filtering. The self-organized aero-ZnS architecture proves to be hydrophilic under tension and hydrophobic when compressed against water. Self-propelled liquid marbles assembled using ZnS hollow micro-tetrapod structures are demonstrated.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Pickering emulsions and particle stabilization · Micro and Nano Robotics · Surface Modification and Superhydrophobicity

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Center for Materials Study and Testing, Technical University of Moldova 1 , Stefan Cel Mare Ave. 168, MD-2004 Chisinau, Republic of Moldova

Institute for Materials Science, Kiel University 2 , Kaiserstrasse 2, D-24143 Kiel, Germany

Department of Physics and Engineering, State University of Moldova 3 , Alexei Mateevici St. 60, MD-2009 Chisinau, Republic of Moldova

Nanochemistry, Max Planck Institute for Solid State Research 4 , Heisenbergstrasse 1, 70569 Stuttgart, Germany

Mads Clausen Institute, NanoSYD, University of Southern Denmark 5 , Alsion 2, 6400 Sønderborg, Denmark

H. H. Wills Physics Laboratory, School of Physics, University of Bristol 6 , Tyndall Avenue, Bristol BS8 1TL, United Kingdom

Academy of Sciences of Moldova 7 , Stefan Cel Mare Ave. 1, MD-2001 Chisinau, Republic of Moldova

Funding

H2020 European Research Council

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