Stable optical trapping and manipulation of high-index particles in low-index host media is often impossible due to the dominance of scattering forces over gradient forces. Here we explore optical manipulation in liquid crystalline structured hosts and show that robust optical manipulation of high-index particles, such as GaN nanowires, is enabled by laser-induced distortions in long-range molecular alignment, via coupling of translational and rotational motions due to helicoidal molecular arrangement, or due to elastic repulsive interactions with confining substrates. Anisotropy of the viscoelastic liquid crystal medium and particle shape give rise to a number of robust unconventional trapping capabilities, which we use to characterize def...
The new mechanism of writing stable particle molecular architectures in a chiral-nematic liquid crys...
Realization of technologies for the mechanical manipulation (trapping, transportation, positioning, ...
We describe and analyze experiments, where optical manipulation of small colloidal particles in the ...
Optical trapping in anisotropic fluids such as liquid crystals shows inherently different behavior c...
Colloidal systems find important applications ranging from fabrication of photonic crystals to direc...
We investigated composite films of gold nanoparticles (NPs)/liquid crystal (LC) defects as a model s...
The high sensitivity of liquid crystals to external fields, especially electromagnetic fields, confe...
We report two viable strategies to assemble and manipulate arrays of nano- and micro-particles by me...
Laser manipulation of trapped radial 4'-n-pentyl-4-cyanobiphenyl (5CB) nematic liquid-crystal drople...
We use nanowires with faceted sidewalls for mapping of the patterns of three-dimensional orientation...
Smart materials adapt to, rather than resist, changes to their environment. In Nature, a variety of ...
Microparticles of arbitrary shapes immersed in the bulk of nematic fluids are known to produce dipol...
The interactions between different types of colloidal particles are measured and analyzed. We use th...
By confining soft materials within tailored boundaries it is possible to design energy landscapes to...
We demonstrate optical trapping and manipulation of defects and transparent microspheres in nematic ...
The new mechanism of writing stable particle molecular architectures in a chiral-nematic liquid crys...
Realization of technologies for the mechanical manipulation (trapping, transportation, positioning, ...
We describe and analyze experiments, where optical manipulation of small colloidal particles in the ...
Optical trapping in anisotropic fluids such as liquid crystals shows inherently different behavior c...
Colloidal systems find important applications ranging from fabrication of photonic crystals to direc...
We investigated composite films of gold nanoparticles (NPs)/liquid crystal (LC) defects as a model s...
The high sensitivity of liquid crystals to external fields, especially electromagnetic fields, confe...
We report two viable strategies to assemble and manipulate arrays of nano- and micro-particles by me...
Laser manipulation of trapped radial 4'-n-pentyl-4-cyanobiphenyl (5CB) nematic liquid-crystal drople...
We use nanowires with faceted sidewalls for mapping of the patterns of three-dimensional orientation...
Smart materials adapt to, rather than resist, changes to their environment. In Nature, a variety of ...
Microparticles of arbitrary shapes immersed in the bulk of nematic fluids are known to produce dipol...
The interactions between different types of colloidal particles are measured and analyzed. We use th...
By confining soft materials within tailored boundaries it is possible to design energy landscapes to...
We demonstrate optical trapping and manipulation of defects and transparent microspheres in nematic ...
The new mechanism of writing stable particle molecular architectures in a chiral-nematic liquid crys...
Realization of technologies for the mechanical manipulation (trapping, transportation, positioning, ...
We describe and analyze experiments, where optical manipulation of small colloidal particles in the ...