5 papers
Speckle Tweezers for Simultaneous Controlling of Low and High Refractive Index Micro-particles
Ramin Jamali, Farzaneh Nazari, Azadeh Ghaffari +2
Manipulation of micro and nanoscale particles suspended in a fluidic medium is one among the defining goals of modern nanotechnology. Speckle tweezers (ST) by incorporating randoml…
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…
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…
Near Field Speckles The Optical Theorem Revisited
Sabareesh K. P. Velu
The zero angle scattered wave plays an essential role in the celebrated Optical Theorem that relates the total extinction cross section (including both scattering and absorption) t…