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Articles by Marcel Rey
Photo-guided azopolymer hydrogel actuators
Abstract Amorphous azopolymers are fascinating materials that can be deformed in arbitrary directions by light. However, they are so far used mostly for microfabrication, to anisotropically reshape dry polymer structures – essentially as a post-processing fabrication step.
Directional flows using capillary assembly of photo-deformable colloidal particles at water-air interfaces - Nature Communications
Abstract Colloidal particles at liquid interfaces experience long-ranged capillary interactions, whose magnitude and directionality depend on the particle shapes. When particle shapes are determined by fabrication or synthesis, the resulting shape-mediated interactions are predefined and often lead to the formation of persistent interfacial structures.
Acoustic neural networks: Identifying design principles and exploring physical feasibility
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Microscopic geared metamachines - Nature Communications
Abstract The miniaturization of mechanical machines is critical for advancing nanotechnology and reducing device footprints. Traditional efforts to downsize gears and micromotors have faced limitations at around 0.1 mm for over thirty years due to the complexities of constructing drives and coupling systems at such scales.
Emulsionströpfchen kontrolliert stabilisieren und aufbrechen
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Interactions between interfaces dictate stimuli-responsive emulsion behaviour - Nature Communications
Abstract Stimuli-responsive emulsions offer a dual advantage, combining long-term storage with controlled release triggered by external cues such as pH or temperature changes. This study establishes that thermo-responsive emulsion behaviour is primarily determined by interactions between, rather than within, interfaces.
Collapse-induced phase transitions in binary interfacial microgel monolayers
Collapse-induced phase transitions in binary interfacial microgel monolayers† Johannes Harrer,‡a Simone Ciarella,‡b Marcel Rey, a Hartmut Löwen,c Liesbeth M. C.
Morphology-Graded Silicon Nanowire Arrays via Chemical Etching: Engineering Optical Properties at the Nanoscale and Macroscale
Introduction Silicon is an earth-abundant, nontoxic element and has a band gap nearly matching the solar spectrum, which makes it a crucial component for micro- and optoelectronic devices.
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