1,474 search results for “mechanisms metamaterials” in the Public website
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Strategies for Mechanical Metamaterial Design
On a structural level, the properties featured by a majority of mechanical metamaterials can be ascribed to the finite number of soft internal degrees-of freedom allowing for low-energy deformations.
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Hysterons and pathways in mechanical metamaterials
Mechanical metamaterials are carefully engineered materials whose properties are controlled by their structure, not by their composition, which allows using metamaterials to study and control physical effects in detail.
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Martin van Hecke Lab - Mechanical Metamaterials
We investigate the physics and design of mechanical metamaterial, intricately sculpted materials with properties set by their architecture.
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Mechanical metamaterials: nonlinear beams and excess zero modes
Mechanical metamaterials are man-made materials which derive their unusual properties from their structure rather than their composition.
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'Bigger is different' - the unusual physics of mechanical metamaterials
Mechanical metamaterials have been found to display surprising features, on top of their unusual properties such as shape morphing and programmability. When the materials are a step in size larger, new rules seem to apply. This was discovered by researchers at AMOLF and the universities of Leiden and…
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Non-Abelian metamaterials: emergent computing and memory
In the traditional theory of linear elasticity, superposition dictates that the response of a material does not depend on the sequence of the applied mechanical actuations.
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Origami metamaterials : design, symmetries, and combinatorics
In the first part of this thesis we study the geometry of folding patterns.
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Imperfections: using defects to program designer matter
Errors are everywhere, and mechanical failures are especially common: buckled grain silos and cracked support columns are, justly, seen as an issue to be avoided.
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Metamaterial undermines 250-year-old construction principles
Researchers from FOM Institute AMOLF, Leiden University and Harvard University made a rubber beam that bends faster when subjected to less pressure. They published their work on 21 July online in Physical Review Letters.
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Self-folding metamaterial
The more complex the object, the harder it is to fold up. Space satellites often need many small motors to fold up an instrument, and people have difficulty simply folding up a roadmap. Physicists from Leiden and Amsterdam have now designed a structure that folds itself up in several steps. Publication…
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Single cell mechanics for disease biology and pharmacology
In this thesis, we describe the potential of cell mechanical phenotyping for immune cell characterization, diagnosis, drug testing, as well as treatment of disease.
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Anisotropy in cell mechanics
Mechanical interactions between cells and their environment play an important role in many biological processes.
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Unravelling cancer drug resistance mechanisms
Mechanisms fro drug resistance
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Causing a stir: Radiative and mechanical feedback in starburst galaxies
Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf
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Biological, Soft and Complex Systems
We study the physics of a broad range of biological and soft materials
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The Mechanical Sky
In what ways can a photographic practice act as a means to confront, or even undo, the various material properties of atmospheric enclosure that so clearly put our relationship with our environment under pressure? Is it possible to devise a set of critical and artistic strategies to comprehend the ways…
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Fine Mechanical Department
What is the Fine Mechanical Department?
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Seeking the boundaries of quantum mechanics
Bouwmeester
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Diagnostics for mechanical heating in star-forming galaxies
Promotor: F.P. Israel, Co-Promoter: R. Meijerink
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The mechanical genome : inquiries into the mechanical function of genetic information
The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.
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Luca Giomi Group - Soft and Bio Mechanics
We are interested in understanding the mechanics of soft materials, of which biological materials are prominent examples.
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Insights into the mechanism of electrocatalytic CO2 reduction and concomitant catalyst degradation pathways
This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…
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Unspinning chromatin: molecular mechanisms of chromatin remodeling
How do you fit two meters of DNA in a tiny compartment and at the same time are able to access the right parts of it at the right times?
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Distracted consumption and compensatory mechanisms
A research into the consumption experience and consumption behaviour.
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Solvent tolerance mechanisms in Pseudomonas putida
Bacterial biocatalysis constitutes a sustainable alternative for high-value chemicals production by enabling the utilization of renewable feedstocks.
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Buckling on demand
Researchers from Leiden University, the Netherlands, designed a novel metamaterial that buckles on demand. Small structural variations in the material single out regions that buckle selectively under external stress, whereas other regions remain unchanged. The research is published in this week’s Early…
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Mechanical and genetics basis of cellularization and serosal window closure in Tribolium castaneum
The applications of studying the early development of insects range from agriculture to material science.
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Mechanisms of Ewing sarcoma metastasis: biochemistry and biophysics
Promotor: T. Schmidt, Co-Promotor: B.E. Snaar-Jagalska
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Molecular mechanisms of adverse outcome and translational biomarkers
Adverse drug reactions (ADRs) remain one of the major reasons for patient mortality and (early) drug withdrawal. Currently, different in vivo and in vitro models are used to assess the toxic potential of drugs in the pre-clinical phase. Unfortunately, the predictive value of this model does not fit…
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Fundamental research: Underlying mechanisms of disease and health
To make the right clinical decisions or develop effective diagnostic tests and treatments, it is important to understand the underlying mechanisms of a condition or behavior.
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Tjerk Oosterkamp Lab - Microscopy and Quantum Mechanics at milliKelvin temperatures
We explore the possibilities to combine magnetic resonance techniques with atomic force microscopy together in a single microscope: the MRI-AFM, also called Magnetic Resonance Force Microscopy (MRFM).
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The mechanism of Agrobacterium-mediated transformation of eukaryotic cells
We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.
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Regulation of autophagy-related mechanisms during bacterial infection
Autophagy is a fundamental degradative process, maintaining cellular homeostasis and functions in host defense against intracellular pathogens, including mycobacteria and Salmonella.
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Search for mechanisms to control massless electrons in graphene
Beenakker
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Exploring the mechanisms of metastatic onset for novel treatment strategies
This thesis represents a comprehensive investigation into the control of cancer stemness and metastatic initiation using a combination of advanced zebrafish xenograft models and in vitro assays.
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One-way traffic for motion in new material
Scientists have developed a material that breaks one of the fundamental principles governing many physical systems. Ordinary materials transmit external forces equally, no matter where the pressure comes from. The newly developed material breaks this rule and could potentially be of interest in soft-robotics…
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Biological and Soft Matter Physics
Research groups in the Biological & Soft Matter Programme unravel mechanisms in biological processes and develop novel bio-inspired soft materials.
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Mechanism-based inhibitors and probes for neuraminidases
Neuraminidases are enzymes that cleave glycosidic linkages of sialic acid. These enzymes are involved in influenza infections as well as in many cellular processes in mammals and micro-organisms.
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Mechanical Response of Foams: Elasticity, Plasticity, and Rearrangements
Promotor: M.L. van Hecke
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Segments and rules: a comparative study into the computational mechanisms underlying language acquisition
In this project we study the properties of statistical- and rule-learning mechanisms in relation to the acquisition and evolution of language. We ask to what extent these mechanisms are unique to humans - or to human language - by comparing the acquisition of vocal structure in two species: humans (infants)…
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Geometric phases in soft materials
Geometric phases lead to a nontrivial interference result when an electron's different quantum mechanical paths choices encircle a magnetic coil in an Aharonov-Bohm experiment.
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the Process of Bacterial Cell Death: Novel Antimicrobials and Their Mechanisms of Action
This thesis describes the antimicrobial discovery strategy developed in our group, the den Hertog Group at the Hubrecht Institute. It includes a cultivation-based screening approach for novel antimicrobial agents from the source of fungi, and a bacterial time-lapse imaging approach for antimicrobial…
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Segments and rules: a comparative study on linguistic rule learning mechanisms
A central and much debated topic in the study of language acquisition concerns the nature of the learning mechanisms that are required. Are the computational and learning mechanisms that guide learning about language structure special and specific to language or humans?
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Capacity to Health Emergencies: Insights from EU Crisis Management Mechanisms
Despite an increased EU role in the preparedness, monitoring and coordination of health emergencies over the past two decades, Member States’ responses to the first wave of COVID-19 were surprisingly uncoordinated. In light of calls to improve cooperation regarding future health emergencies, this article…
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A time-space translation mechanism for patterning the vertebrate anteroposterior axis
My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.
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Freedom of additional signals on genes: on the combination of DNA mechanics, genetics and translation speed
DNA carries various forms of information. Out of these forms of information the most well-known is classical genetic information.
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Physicists find way to control fractures
Rigid materials break more easily than floppy ones. This simple observation allows to predict and control the width of cracks. Theoretical understanding of how materials break is useful in for example the production of cars or screens. Publication in PNAS.
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PhD: Modeling the mechanical regulation of plant development and regeneration (1.0 FTE)
Science, Mathematical Institute (MI)
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Unraveling the auxin mechanism in 2,4-D induced somatic embryogenesis in Arabidopsis thaliana
Promotor: P. J. J. Hooykaas, Co-promotor: R. Offringa
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Do fungi differ? Understanding the mechanisms of mycorrhizal fungal impacts on soil C sequestration
How presence, abundance and enzymatic activities of AM and EM fungi differently affect soil carbon sequestration processes?