Martin van Hecke
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View article: Slit-snapping and multistability in buckled beams with partial cuts
Slit-snapping and multistability in buckled beams with partial cuts Open
Elastic instabilities such as buckling and snapping have evolved into a powerful design principle, enabling memory, sequential shape morphing, and computing in metamaterials and devices. Modifying the post-buckling configurations or their …
View article: Transition graphs of interacting hysterons: structure, design, organization and statistics
Transition graphs of interacting hysterons: structure, design, organization and statistics Open
Transition graphs capture the memory and sequential response of multistable media, by specifying their evolution under external driving. Microscopically, collections of bistable elements, or hysterons, provide a powerful model for these ma…
View article: Roadmap for animate matter
Roadmap for animate matter Open
Humanity has long sought inspiration from nature to innovate materials and devices. As science advances, nature-inspired materials are becoming part of our lives. Animate materials, characterized by their activity, adaptability, and autono…
View article: Dynamic Avalanches: Rate-Controlled Switching and Race Conditions
Dynamic Avalanches: Rate-Controlled Switching and Race Conditions Open
Avalanches are rapid cascades of rearrangements driven by cooperative flipping of hysteretic local elements. Here we show that flipping dynamics and race conditions -- where multiple elements become unstable simultaneously -- give rise to …
View article: Prospecting for pluripotency in metamaterial design
Prospecting for pluripotency in metamaterial design Open
From self-assembly and protein folding to combinatorial metamaterials, a key challenge in material design is finding the right combination of interacting building blocks that yield targeted properties. Such structures are fiendishly diffic…
View article: Aging of amorphous materials under cyclic strain
Aging of amorphous materials under cyclic strain Open
Amorphous materials driven away from equilibrium display a diverse repertoire of complex, history-dependent behaviors. One striking feature is a failure to return to equilibrium after an abrupt change in otherwise static external condition…
View article: Accelerated snapping of slender beams under lateral forcing
Accelerated snapping of slender beams under lateral forcing Open
The hysteretic snapping under lateral forcing of a compressed, buckled beam is fundamental for many devices and mechanical metamaterials. For a single-tip lateral pusher, an important limitation is that snapping requires the pusher to cros…
View article: Transients and multiperiodic responses: a hierarchy of material bits
Transients and multiperiodic responses: a hierarchy of material bits Open
When cyclically driven, certain disordered materials exhibit transient and multiperiodic responses that are difficult to reproduce in synthetic materials. Here, we show that elementary multiperiodic elements with period T=2, togglerons, ca…
View article: Exotic mechanical properties enabled by countersnapping instabilities
Exotic mechanical properties enabled by countersnapping instabilities Open
Mechanical snapping instabilities are leveraged by natural systems, metamaterials, and devices for rapid sensing, actuation, and shape changes, as well as to absorb impact. In all current forms of snapping, shapes deform in the same direct…
View article: Path-dependency and emergent computing under vectorial driving
Path-dependency and emergent computing under vectorial driving Open
The sequential response of frustrated materials - ranging from crumpled sheets and amorphous media to metamaterials - reveals their memory effects and emergent computational potential. Despite their spatial extension, most studies rely on …
View article: Roadmap on embodying mechano-intelligence and computing in functional materials and structures
Roadmap on embodying mechano-intelligence and computing in functional materials and structures Open
This is a roadmap article with multiple contributors on different aspects of embodying intelligence and computing in the mechanical domain of functional materials and structures. Overall, an IOP roadmap article is a broad, multi-author rev…
View article: Dynamic self-loops in networks of passive and active binary elements
Dynamic self-loops in networks of passive and active binary elements Open
Models of coupled binary elements capture memory effects in complex dissipative materials, such as transient responses or sequential computing, when their interactions are chosen appropriately. However, for random interactions, self-loops …
View article: Geometric control and memory in networks of hysteretic elements
Geometric control and memory in networks of hysteretic elements Open
The response of driven frustrated media stems from interacting hysteretic elements. We derive explicit mappings from networks of hysteretic springs to their abstract representation as interacting hysterons. These maps reveal how the physic…
View article: Roadmap for Animate Matter
Roadmap for Animate Matter Open
Humanity has long sought inspiration from nature to innovate materials and devices. As science advances, nature-inspired materials are becoming part of our lives. Animate materials, characterized by their activity, adaptability, and autono…
View article: Prospecting for Pluripotency in Metamaterial Design
Prospecting for Pluripotency in Metamaterial Design Open
From self-assembly and protein folding to combinatorial metamaterials, a key challenge in material design is finding the right combination of interacting building blocks that yield targeted properties. Such structures are fiendishly diffic…
View article: Controlled pathways and sequential information processing in serially coupled mechanical hysterons
Controlled pathways and sequential information processing in serially coupled mechanical hysterons Open
The complex sequential response of frustrated materials results from the interactions between material bits called hysterons. Hence, a central challenge is to understand and control these interactions, so that materials with targeted pathw…
View article: The collective snapping of a pair of bumping buckled beams
The collective snapping of a pair of bumping buckled beams Open
When a pair of parallel buckling beams of unequal thickness make lateral contact under increasing compression, eventually either the thin or the thick beam will snap, leading to collective motion of the beam pair. Using experiments and FEM…
View article: Transition Graphs of Interacting Hysterons: Structure, Design, Organization and Statistics
Transition Graphs of Interacting Hysterons: Structure, Design, Organization and Statistics Open
Transition graphs capture the memory and sequential response of multistable media, by specifying their evolution under external driving. Microscopically, collections of bistable elements, or hysterons, provide a powerful model for these ma…
View article: The Collective Snapping of a Pair of Bumping Buckled Beams
The Collective Snapping of a Pair of Bumping Buckled Beams Open
When a pair of parallel buckling beams of unequal width make lateral contact under increasing compression, eventually either the thin or the thick beam will snap, leading to collective motion of the beam pair. Using experiments and FEM sim…
View article: Patterning Complex Line Motifs in Thin Films Using Immersion‐Controlled Reaction‐Diffusion
Patterning Complex Line Motifs in Thin Films Using Immersion‐Controlled Reaction‐Diffusion Open
The discovery of self‐organization principles that enable scalable routes toward complex functional materials has proven to be a persistent challenge. Here, reaction‐diffusion driven, immersion‐controlled patterning (R‐DIP) is introduced, …
View article: Counting and Sequential Information Processing in Mechanical Metamaterials
Counting and Sequential Information Processing in Mechanical Metamaterials Open
This dataset contains images and driving protocols used in the paper: "Counting and Sequential Information Processing in Mechanical Metamaterials", published in Physical Review Letters. In this paper we demonstrate "beam counters"; metamat…
View article: Counting and Sequential Information Processing in Mechanical Metamaterials
Counting and Sequential Information Processing in Mechanical Metamaterials Open
This dataset contains images and driving protocols used in the paper: "Counting and Sequential Information Processing in Mechanical Metamaterials", published in Physical Review Letters. In this paper we demonstrate "beam counters"; metamat…
View article: Emergent Nonlocal Combinatorial Design Rules for Multimodal Metamaterials
Emergent Nonlocal Combinatorial Design Rules for Multimodal Metamaterials Open
Combinatorial mechanical metamaterials feature spatially textured soft modes that yield exotic and useful mechanical properties. While a single soft mode often can be rationally designed by following a set of tiling rules for the building …
View article: Counting and Sequential Information Processing in Mechanical Metamaterials
Counting and Sequential Information Processing in Mechanical Metamaterials Open
Materials with an irreversible response to cyclic driving exhibit an evolving internal state which, in principle, encodes information on the driving history. Here we realize irreversible metamaterials that count mechanical driving cycles a…
View article: Multi-Frequency Acoustic Steering in Rationally Pruned Disordered Networks
Multi-Frequency Acoustic Steering in Rationally Pruned Disordered Networks Open
The frequency of a wave is a crucial parameter to understanding its propagation to a structured medium. While metamaterials can be designed to focus or steer deformations or waves toward a specific location, wave steering toward multiple t…
View article: Machine Learning of Implicit Combinatorial Rules in Mechanical Metamaterials
Machine Learning of Implicit Combinatorial Rules in Mechanical Metamaterials Open
Combinatorial problems arising in puzzles, origami, and (meta)material design have rare sets of solutions, which define complex and sharply delineated boundaries in configuration space. These boundaries are difficult to capture with conven…
View article: Rapid formation of uniformly layered materials by coupling reaction–diffusion processes with mechanical responsiveness
Rapid formation of uniformly layered materials by coupling reaction–diffusion processes with mechanical responsiveness Open
Straightforward manufacturing pathways toward large-scale, uniformly layered composites may enable the next generation of materials with advanced optical, thermal, and mechanical properties. Reaction–diffusion systems are attractive candid…
View article: Convolutional Neural Networks for Classifying Combinatorial Metamaterials
Convolutional Neural Networks for Classifying Combinatorial Metamaterials Open
This dataset contains the training and test data, as well as the trained neural networks as used for the paper 'Machine Learning of Implicit Combinatorial Rules in Mechanical Metamaterials', as published in Physical Review Letters. In this…