376 citations · 996 across the 8 of their papers we have counts for
8 papers
Manipulation and assembly of nanowires with holographic optical traps
Ritesh Agarwal, Kosta Ladavac, Yael Roichman +3
We demonstrate that semiconductor nanowires measuring just a few nanometers in diameter can be translated, rotated, cut, fused and organized into nontrivial structures using hologr…
Optimized holographic optical traps
Marco Polin, Kosta Ladavac, Sang-Hyuk Lee +2
Holographic optical traps use the forces exerted by computer-generated holograms to trap, move and otherwise transform mesoscopically textured materials. This article introduces me…
Colloidal hydrodynamic coupling in concentric optical vortices
Kosta Ladavac, David G. Grier
Optical vortex traps created from helical modes of light can drive fluid-borne colloidal particles in circular trajectories. Concentric circulating rings of particles formed by coa…
Observation of Flux Reversal in a Symmetric Optical Thermal Ratchet
Sang-Hyuk Lee, Kosta Ladavac, Marco Polin +1
We demonstrate that a cycle of three holographic optical trapping patterns can implement a thermal ratchet for diffusing colloidal spheres, and that the ratchet-driven transport di…
Transport and Fractionation in Periodic Potential-Energy Landscapes
Kosta Ladavac, Matthew Pelton, David G. Grier
Objects driven through periodically modulated potential-energy landscapes in two dimensions can become locked in to symmetry-selected directions that are independent of the driving…
Microoptomechanical pumps assembled and driven by holographic optical vortex arrays
Kosta Ladavac, David G. Grier
Beams of light with helical wavefronts can be focused into ring-like optical traps known as optical vortices. The orbital angular momentum carried by photons in helical modes can b…