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Auxetic behaviour in crystals of hard polyhedra
Rinske M. Alkemade, Silvana A. Caipa Cure, Alptuğ Ulugöl +8
Auxetic materials - systems that, when subjected to a compression in one direction, also compress in one or more perpendicular directions - have intrigued researchers for decades d…
Assembly pathways of anisotropic lipid membrane-deforming colloids
Ali Azadbakht, Thomas Weikl, Daniela J. Kraft
Membrane-deformation mediated interactions play an important role in the spatial organization of proteins on the cell membrane. Although interactions between isotropic membrane def…
Self-Generated Electric Fields in Polyelectrolyte Gradients Increase Microparticle Transport
Max Huisman, Ali Azadbakht, Patrick B. Warren +1
There are many situations in nature and industry where small particles are exposed to gradients of charged polymers, such as enzymes in biological gradients of DNA or RNA, virus pa…
3D microprinting anisotropic and deformable active matter -- A perspective
Mengshi Wei, Daniela J. Kraft
Active colloidal particles provide versatile model systems for exploring non-equilibrium physics in motile matter. To date, most experimental realizations have focused on spherical…
Shape-dependent direction reversal in anisotropic catalytic microswimmers
Solenn Riedel, Mengshi Wei, Daniela J. Kraft
The propulsion direction of active particles is a key feature in self-propelled systems and depends on the propulsion mechanism and environmental conditions. Here, using 3D micro-p…
Autonomous life-like behavior emerging in active and flexible microstructures
Mengshi Wei, Daniela J. Kraft
Many organisms leverage an interplay between shape and activity to generate motion and adapt to their environment. Embedding such feedback into synthetic microrobots could eliminat…
Colloidal Pivots Enable Brownian Metamaterials and Machines
Julio Melio, Martin van Hecke, Silke E. Henkes +1
Biological machines harness targeted deformations that can be actuated by Brownian fluctuations. However, while synthetic micromachines can similarly leverage targeted deformations…
Fabrication and characterization of bimetallic silica-based and 3D-printed active colloidal cubes
Silvana A. Caipa Cure, Daniela J. Kraft
Simulations on self-propelling active cubes reveal interesting behaviors at both the individual and the collective level, emphasizing the importance of developing experimental anal…
Repulsion and attraction in the interactions of opposite membrane deformations
Ali Azadbakht, Daniela J. Kraft
Lipid membrane deformations have been predicted to lead to indirect forces between the objects that induce these deformations. Recent experimental measurements have found an attrac…
The motion of catalytically active colloids approaching a surface
Julio Melio, Solenn Riedel, Ali Azadbakht +6
Catalytic microswimmers typically swim close to walls due to hydrodynamic and/or phoretic effects. The walls in turn are known to affect their propulsion, making it difficult to si…