109 citations · 394 across the 14 of their papers we have counts for
19 papers
Nanoalignment by Critical Casimir Torques
Gan Wang, Piotr Nowakowski, Nima Farahmand Bafi +7
The manipulation of microscopic objects requires precise and controllable forces and torques. Recent advances have led to the use of critical Casimir forces as a powerful tool, whi…
Optically Driven Janus Micro Engine with Full Orbital Motion Control
David Bronte Ciriza, Agnese Callegari, Maria Grazia Donato +11
Microengines have shown promise for a variety of applications in nanotechnology, microfluidics and nanomedicine, including targeted drug delivery, microscale pumping, and environme…
Playing with Active Matter
Angelo Barona Balda, Aykut Argun, Agnese Callegari +1
In the last 20 years, active matter has been a very successful research field, bridging the fundamental physics of nonequilibrium thermodynamics with applications in robotics, biol…
Faster and more accurate geometrical-optics optical force calculation using neural networks
David Bronte Ciriza, Alessandro Magazzù, Agnese Callegari +5
Optical forces are often calculated by discretizing the trapping light beam into a set of rays and using geometrical optics to compute the exchange of momentum. However, the number…
Roadmap for Optical Tweezers
Giovanni Volpe, Onofrio M. Maragò, Halina Rubinzstein-Dunlop +80
Optical tweezers are tools made of light that enable contactless pushing, trapping, and manipulation of objects ranging from atoms to space light sails. Since the pioneering work b…
Effect of colloidal weight at different planar interfaces
Mehdi Shaffei Aporvari, Agnese Callegari, Emine Ulku Saritas
In many physical and biological systems, particles and microorganisms move in the proximity of an interface. Understanding the dynamics of a particle suspended close to an interfac…
Tunable critical Casimir forces counteract Casimir-Lifshitz attraction
Falko Schmidt, Agnese Callegari, Abdallah Daddi-Moussa-Ider +7
Casimir forces in quantum electrodynamics emerge between microscopic metallic objects because of the confinement of the vacuum electromagnetic fluctuations occurring even at zero t…
Optical trapping and critical Casimir forces
Agnese Callegari, Alessandro Magazzù, Andrea Gambassi +1
Critical Casimir forces emerge between objects, such as colloidal particles, whenever their surfaces spatially confine the fluctuations of the order parameter of a critical liquid…
Ordering of Binary Colloidal Crystals by Random Potentials
Andre S. Nunes, Sabareesh K. P. Velu, Iryna Kasianiuk +6
Structural defects are ubiquitous in condensed matter, and not always a nuisance. For example, they underlie phenomena such as Anderson localization and hyperuniformity, and they a…
Clustering of Janus Particles in Optical Potential Driven by Hydrodynamic Fluxes
S. Masoumeh Mousavi, Sabareesh K. P. Velu, Agnese Callegari +2
Self-organisation is driven by the interactions between the individual components of a system mediated by the environment, and is one of the most important strategies used by many…
Controlling the dynamics of colloidal particles by critical Casimir forces
Alessandro Magazzù, Agnese Callegari, Juan Pablo Staforelli +3
Critical Casimir forces can play an important role for applications in nano-science and nanotechnology, owing to their piconewton strength, nanometric action range, fine tunability…
Active Matter Alters the Growth Dynamics of Coffee Rings
Tugba Andac, Pascal Weigmann, Sabareesh K. P. Velu +4
How particles are deposited at the edge of evaporating droplets, i.e. the {\em coffee ring} effect, plays a crucial role in phenomena as diverse as thin-film deposition, self-assem…
Microscopic Engine Powered by Critical Demixing
Falko Schmidt, Alessandro Magazzu, Agnese Callegari +3
By converting energy into mechanical work, engines play a central role in most biological and technological processes. In particular, within the current trend towards the developme…
Nonadditivity of Critical Casimir Forces
Sathyanarayana Paladugu, Agnese Callegari, Yazgan Tuna +4
In soft and condensed matter physics, effective interactions often emerge as a result of the spatial confinement of a fluctuating field. For instance, microscopic particles in a bi…
Speckle Optical Tweezers: Micromanipulation with Random Light Fields
Giorgio Volpe, Lisa Kurz, Agnese Callegari +2
Current optical manipulation techniques rely on carefully engineered setups and samples. Although similar conditions are routinely met in research laboratories, it is still a chall…
Computational toolbox for optical tweezers in geometrical optics
Agnese Callegari, Mite Mijalkov, A. Burak Gököz +1
Optical tweezers have found widespread application in many fields, from physics to biology. Here, we explain in detail how optical forces and torques can be described within the ge…
Repulsion-Sustained Supercurrent and Flux Quantization in Rings of Symmetric Hubbard Clusters
Agnese Callegari, Michele Cini, Enrico Perfetto +1
We test the response to a threading magnetic field of rings of 5-site -symmetric repulsive Hubbard clusters connected by weak intercell links; each 5-site unit has the topo…
Symmetric Hubbard Systems with Superconducting Magnetic Response
Agnese Callegari, Michele Cini, Enrico Perfetto +1
In purely repulsive, -symmetric Hubbard clusters a correlation effect produces an effective two-body attraction and pairing; the key ingredient is the availability of W=0 p…
"Spin-Disentangled" Exact Diagonalization of Repulsive Hubbard Systems: Superconducting Pair Propagation
Michele Cini, Gianluca Stefanucci, Enrico Perfetto +1
By a novel exact diagonalization technique we show that bound pairs propagate between repulsive Hubbard clusters in a superconducting fashion. The size of the matrices that must be…