374 citations · 1.4k across the 22 of their papers we have counts for
17 papers · 1 filter
Mechanochemical feedback drives complex inertial dynamics in active solids
Siddhartha Sarkar, Biswarup Ash, Yueyang Wu +3
Active solids combine internal active driving with elasticity to realize states with nonequilibrium mechanics and autonomous motion. They are often studied in overdamped settings,…
Design rules for controlling active topological defects
Suraj Shankar, Luca V. D. Scharrer, Mark J. Bowick +1
Topological defects play a central role in the physics of many materials, including magnets, superconductors and liquid crystals. In active fluids, defects become autonomous partic…
Boundaries control active channel flows
Paarth Gulati, Suraj Shankar, M. Cristina Marchetti
Boundary conditions dictate how fluids, including liquid crystals, flow when pumped through a channel. Can boundary conditions also be used to control internally driven active flui…
Optimal transport and control of active drops
Suraj Shankar, Vidya Raju, L. Mahadevan
Understanding the complex patterns in space-time exhibited by active systems has been the subject of much interest in recent times. Complementing this forward problem is the invers…
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…
Topological active matter
Suraj Shankar, Anton Souslov, Mark J. Bowick +2
Active matter encompasses different nonequilibrium systems in which individual constituents convert energy into non-conservative forces or motion at the microscale. This review pro…
Viscoelastic control of spatiotemporal order in bacterial active matter
Song Liu, Suraj Shankar, M. Cristina Marchetti +1
Active matter consists of units that generate mechanical work by consuming energy. Examples include living systems, such as assemblies of bacteria and biological tissues, biopolyme…
Emergence of dynamic vortex glasses in disordered polar active fluids
Amélie Chardac, Suraj Shankar, M. Cristina Marchetti +1
In equilibrium, disorder conspires with topological defects to redefine the ordered states of matter in systems as diverse as crystals, superconductors and liquid crystals. Far fro…
Shape and size changes of adherent elastic epithelia
Benjamin Loewe, Francesco Serafin, Suraj Shankar +2
Epithelial tissues play a fundamental role in various morphogenetic events during development and early embryogenesis. Although epithelial monolayers are often modeled as two-dimen…
Hydrodynamics of Active Defects: from order to chaos to defect ordering
Suraj Shankar, M. Cristina Marchetti
Topological defects play a prominent role in the physics of two-dimensional materials. When driven out of equilibrium in active nematics, disclinations can acquire spontaneous self…
Kirigami mechanics as stress relief by elastic charges
Michael Moshe, Edward Esposito, Suraj Shankar +4
We develop a geometric approach to understand the mechanics of perforated thin elastic sheets, using the method of strain-dependent image elastic charges. This technique recognizes…
Defect unbinding in active nematics
Suraj Shankar, Sriram Ramaswamy, M. Cristina Marchetti +1
We formulate the statistical dynamics of topological defects in the active nematic phase, formed in two dimensions by a collection of self-driven particles on a substrate. An impor…
Hidden entropy production and work fluctuations in an ideal active gas
Suraj Shankar, M. Cristina Marchetti
Collections of self-propelled particles that move persistently by continuously consuming free energy are a paradigmatic example of active matter. In these systems, unlike Brownian…
Nonlinear mechanics of thin frames
Michael Moshe, Edward Esposito, Suraj Shankar +4
The dramatic effect kirigami, such as hole cutting, has on the elastic properties of thin sheets invites a study of the mechanics of thin elastic frames under an external load. Suc…
The low noise phase of a 2d active nematic
Suraj Shankar, Sriram Ramaswamy, M. Cristina Marchetti
We consider a collection of self-driven apolar particles on a substrate that organize into an active nematic phase at sufficiently high density or low noise. Using the dynamical re…
Topological Sound and Flocking on Curved Surfaces
Suraj Shankar, Mark J. Bowick, M. Cristina Marchetti
Active systems on curved geometries are ubiquitous in the living world. In the presence of curvature orientationally ordered polar flocks are forced to be inhomogeneous, often requ…
Probing the shear viscosity of an active nematic
Pau Guillamat, Jordi Ignés-Mullol, Suraj Shankar +2
In vitro reconstituted active systems, such as the ATP-driven microtubule bundle suspension developed by the Dogic group, provide a fertile testing ground for elucidating the pheno…