4 citations · 4 across the 12 of their papers we have counts for
12 papers
Variational Openness: An Open Formulation of Hamilton's Principle
Francisco Monroy
Since its classical origin, Hamilton's principle has been formulated under an exact closure condition: admissible variations vanish at the boundaries of the variational domain. Thi…
Mass Generation from Embedding Geometry in Surface Nematics
J. A. Santiago, F. Monroy
We show that a nematic field constrained to a curved embedded surface develops an emergent geometric mass in its leading isotropic interaction sector. An auxiliary embedding-space…
Variational Boundary Fluctuations as a First-Principles Origin of Langevin Noise
Francisco Monroy
Stochastic forces are usually postulated or obtained by eliminating environmental degrees of freedom. Here we identify a variational origin: fluctuating endpoint data in Hamilton's…
Variational Openness
Francisco Monroy
Variational principles in mechanics, field theory and geometric analysis are usually formulated on closed admissible classes, where boundary variations are either fixed or independ…
Wilson-Fisher renormalization of discrete gravity-capillary wave turbulence in viscous fluids
José A. Santiago, Mikheil Kharbedia, Basilio J. García +1
We report an experimental realization of Wilson-Fisher renormalization in driven surface-wave turbulence across Newtonian fluids spanning nearly six decades in Raynolds number. Dis…
Active Force Dynamics in Red Blood Cells Under Non-Invasive Optical Tweezers
Arnau Dorn, Clara Luque-Rioja, Macarena Calero +3
Red blood cells (RBCs) sustain mechanical stresses associated with microcirculatory flow through ATP-driven plasma membrane flickering. This is an active phenomenon driven by motor…
Active Extensile Hydrogels Actuated by Living Polymers of the Bacterial Cytokinetic Protein FtsZ
Mikheil Kharbedia, Diego Herráez-Aguilar, Macarena Calero +6
Active materials capable of autonomously modulating their mechanical properties are foundational to the development of next-generation soft technologies. Here, we introduce a novel…
Stochastic motility energetics reveals cooperative bacterial swarming in optical tweezers
Clara Luque-Rioja, Horacio López-Menéndez, Macarena Calero +4
Bacterial flagellar swarming enables dense microbial populations to migrate collectively across surfaces, often resulting in emergent, coordinated behaviors. However, probing the u…
Collective lattice excitations in the dynamic route for melting hydrodynamic 2D-crystals
Mikheil Kharbedia, Niccolò Caselli, Macarena Calero +5
Surface stiffnesses engender steady patterns of Faraday waves (FWs), so called hydrodynamic crystals as correspond to ordered wave lattices made of discrete subharmonics under mono…
Optical control of spatially localized red blood cell activity by holographic tweezing
Niccolò Caselli, Mario García-Verdugo, Macarena Calero +4
Red blood cells possess unique biomechanical ability to squeeze through capillaries smaller than their size to enable gas and ion exchange. A key signature of their active biomecha…
Rheology of Pseudomonas fluorescens biofilms: from experiments to DPD mesoscopic modelling
Jose Martin Roca, Valentino Bianco, Francisco Alarcon +6
The presence of bacterial biofilms in clinical and industrial settings is a major issue worldwide. A biofilm is a viscoelastic matrix, composed of bacteria producing a network of E…
Mechanics of nematic membranes: Euler-Lagrange equations, Noether charges, stress, torque and boundary conditions of the surface Frank nematic field
J. A. Santiago, F. Monroy
The mechanics of a flexible membrane decorated with a nematic liquid-crystal texture is considered in a variational framework. The variations on the splay, twist and the bend energ…