130 citations · 340 across the 24 of their papers we have counts for
17 papers · 1 filter
Structural Dynamics of Contractile Injection Systems
Noah Toyonaga, L Mahadevan
The dynamics of many macromolecular machines is characterized by chemically-mediated structural changes that achieve large scale functional deployment through local rearrangements…
Statics and diffusive dynamics of surfaces driven by -atic topological defects
Farzan Vafa, L. Mahadevan
Inspired by epithelial morphogenesis, we consider a minimal model for the shaping of a surface driven by -atic topological defects. We show that a positive (negative) defect can…
Localization in musical steelpans
Petur Bryde, L. Mahadevan
The steelpan is a pitched percussion instrument that takes the form of a concave bowl with several localized dimpled regions of varying curvature. Each of these localized zones, ca…
Explosive rigidity percolation in kirigami
Gary P. T. Choi, Lucy Liu, L. Mahadevan
Controlling the connectivity and rigidity of kirigami, i.e. the process of cutting paper to deploy it into an articulated system, is critical in the manifestations of kirigami in a…
Contractility-induced phase separation in active solids
Sifan Yin, L Mahadevan
A combination of cellular contractility and active phase separation in cell-matrix composites is thought to be an enabler of spatiotemporal patterning in multicellular tissues acro…
An additive framework for kirigami design
Levi H. Dudte, Gary P. T. Choi, Kaitlyn P. Becker +1
We present an additive approach for the inverse design of kirigami-based mechanical metamaterials by focusing on the empty (negative) spaces instead of the solid tiles. By consider…
How to grow a flat leaf
Salem al-Mosleh, L. Mahadevan
Growing a flat lamina such as a leaf is almost impossible without some feedback to stabilize long wavelength modes that are easy to trigger since they are energetically cheap. Here…
Active entanglement enables stochastic, topological grasping
Kaitlyn Becker, Clark Teeple, Nicholas Charles +5
Grasping, in both biological and engineered mechanisms, can be highly sensitive to the gripper and object morphology, as well as perception, and motion planning. Here we circumvent…
Geometric control of topological dynamics in a singing saw
Suraj Shankar, Petur Bryde, L. Mahadevan
The common handsaw can be converted into a bowed musical instrument capable of producing exquisitely sustained notes when its blade is appropriately bent. Acoustic modes localized…
Geometrical dynamics of edge-driven surface growth
C. Nadir Kaplan, L. Mahadevan
Accretion of mineralized thin wall-like structures via localized growth along their edges is observed in a range of physical and biological systems ranging from molluscan and brach…
Active nematic defects and epithelial morphogenesis
Farzan Vafa, L. Mahadevan
Inspired by recent experiments that highlight the role of nematic defects in the morphogenesis of epithelial tissues, we develop a minimal framework to study the dynamics of an act…
Defect-mediated dynamics of coherent structures in active nematics
Mattia Serra, Linnea Lemma, Luca Giomi +2
Active fluids, such as cytoskeletal filaments, bacterial colonies and epithelial cell layers, exhibit distinctive orientational coherence, often characterized by nematic order and…
Combing a double helix
Thomas Bolton Plumb-Reyes, Nicholas Charles, L. Mahadevan
Combing hair involves brushing away the topological tangles in a collective curl. Using a combination of experiment and computation, we study this problem that naturally links topo…
Wallpaper group kirigami
Lucy Liu, Gary P. T. Choi, L. Mahadevan
Kirigami, the art of paper cutting, has become a paradigm for mechanical metamaterials in recent years. The basic building blocks of any kirigami structures are repetitive deployab…
Control of connectivity and rigidity in prismatic assemblies
Gary P. T. Choi, Siheng Chen, L. Mahadevan
How can we manipulate the topological connectivity of a three-dimensional prismatic assembly to control the number of internal degrees of freedom and the number of connected compon…
An additive algorithm for origami design
Levi H. Dudte, Gary P. T. Choi, L. Mahadevan
Inspired by the allure of additive fabrication, we pose the problem of origami design from a new perspective: how can we grow a folded surface in three dimensions from a seed so th…
Rotation of a submerged finite cylinder moving down a soft incline
Baudouin Saintyves, Bhargav Rallabandi, Theo Jules +5
A submerged finite cylinder moving under its own weight along a soft incline lifts off and slides at a steady velocity while also spinning. Here, we experimentally quantify the ste…