Andreas Goralczyk
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View article: 3D printed elastic fluoropolymer with high stretchability and enhanced chemical resistance for microfluidic applications
3D printed elastic fluoropolymer with high stretchability and enhanced chemical resistance for microfluidic applications Open
Elastomeric materials, most prominently polydimethylsiloxane, are of great importance for microfluidic systems. Unfortunately, most elastomeric materials used in these systems so far show poor chemical resistance. Fluorinated elastomers ar…
View article: Controllable Wetting Transitions on Photoswitchable Physical Gels
Controllable Wetting Transitions on Photoswitchable Physical Gels Open
Softness plays a key role in the deformation of soft elastic substrates at the three-phase contact line, and the acting forces lead to the formation of a wetting ridge due to elastocapillarity. The change in wetting ridge and surface profi…
View article: <i>In Situ</i> Actuators with Gallium Liquid Metal Alloys and Polypyrrole-Coated Electrodes
<i>In Situ</i> Actuators with Gallium Liquid Metal Alloys and Polypyrrole-Coated Electrodes Open
Gallium liquid metal alloys (GLMAs) such as Galinstan and gallium-indium eutectic (EGaIn) are interesting materials due to their high surface tensions, low viscosities, and electrical conductivities comparable to classical solid metals. Th…
View article: Superrepellent Porous Polymer Surfaces by Replication from Wrinkled Polydimethylsiloxane/Parylene F
Superrepellent Porous Polymer Surfaces by Replication from Wrinkled Polydimethylsiloxane/Parylene F Open
Superrepellent surfaces, such as micro/nanostructured surfaces, are of key importance in both academia and industry for emerging applications in areas such as self-cleaning, drag reduction, and oil repellence. Engineering these surfaces is…
View article: Spray‐Coating of Superhydrophobic Coatings for Advanced Applications
Spray‐Coating of Superhydrophobic Coatings for Advanced Applications Open
Superhydrophobic coatings are widely applicable, e.g., as self‐cleaning surfaces or water–oil separation membranes, yet their wider usage is impeded due to costs of fabrication, size, or substrate limitation. Spray‐coating is a versatile c…
View article: Smooth Transparent Omniphobic Coatings with Remarkable Liquid Repellence
Smooth Transparent Omniphobic Coatings with Remarkable Liquid Repellence Open
Liquid repellent surfaces are of high interest in various fields like protective coatings and droplet manipulation due to their outstanding properties from self‐cleaning to anti‐fouling. Most reported surfaces rely on the fabrication of mi…
View article: A Real‐Time Capacitive Sensor to Detect the Stability of <i>Salvinia</i> Layers on Porous Superhydrophobic Polymers Under Shear
A Real‐Time Capacitive Sensor to Detect the Stability of <i>Salvinia</i> Layers on Porous Superhydrophobic Polymers Under Shear Open
Superhydrophobicity can be achieved by combining sufficiently low surface energy with a suitable surface roughness. Repellency in such surfaces is the result of the so‐called Salvinia layer, a small layer of air trapped between the superhy…
View article: Application of Micro/Nanoporous Fluoropolymers with Reduced Bioadhesion in Digital Microfluidics
Application of Micro/Nanoporous Fluoropolymers with Reduced Bioadhesion in Digital Microfluidics Open
Digital microfluidics (DMF) is a versatile platform for conducting a variety of biological and chemical assays. The most commonly used set-up for the actuation of microliter droplets is electrowetting on dielectric (EWOD), where the liquid…
View article: A Polystyrene Photoresin for Direct Lithography of Microfluidic Chips
A Polystyrene Photoresin for Direct Lithography of Microfluidic Chips Open
Polystyrene (PS) is the material of choice for many medical, biological, and biomedical applications given its advantageous properties such as high biocompatibility, optical transparency, and the possibility to shape PS using high‐throughp…
View article: On‐Chip Chemical Synthesis Using One‐Step 3D Printed Polyperfluoropolyether
On‐Chip Chemical Synthesis Using One‐Step 3D Printed Polyperfluoropolyether Open
Three‐dimensional (3D) printing has already shown its high relevance for the fabrication of microfluidic devices in terms of precision manufacturing cycles and a wider range of materials. 3D‐printable transparent fluoropolymers are highly …
View article: High Resolution Patterning of an Organic–Inorganic Photoresin for the Fabrication of Platinum Microstructures
High Resolution Patterning of an Organic–Inorganic Photoresin for the Fabrication of Platinum Microstructures Open
Platinum (Pt) is an interesting material for many applications due to its high chemical resilience, outstanding catalytic activity, high electrical conductivity, and high melting point. However, microstructuring and especially 3D microstru…
View article: Facile fabrication of micro-/nanostructured, superhydrophobic membranes with adjustable porosity by 3D printing
Facile fabrication of micro-/nanostructured, superhydrophobic membranes with adjustable porosity by 3D printing Open
3D printed micro/-nanostructured thin membranes with inherent adjustable porosity in the submicron range for the use as water–oil separators.