Results 1 to 10 of about 1,035,293 (328)
Enhancing Optical Gradient Forces with Metamaterials [PDF]
Physical Review Letters, 2013 We demonstrate how the optical gradient force between two waveguides can be enhanced using transformation optics. A thin layer of double-negative or single-negative metamaterial can shrink the interwaveguide distance perceived by light, resulting in a ...
Ginis, Vincent +3 more
core +7 more sources
Force-insensitive optical cavity [PDF]
Optics Letters, 2011 We describe a rigidly-mounted optical cavity which is insensitive to inertial forces acting in any direction and to the compressive force used to constrain it.
Chou +14 more
core +5 more sources
Optical forces in nanowire pairs and metamaterials [PDF]
Optics Express, 2010 We study the optical force arising when isolated gold nanowire pairs and metamaterials with a gold nanowire pair in the unit cell are illuminated with laser radiation.
Chu +35 more
core +6 more sources
Completely Chiral Optical Force for Enantioseparation. [PDF]
Sci Rep, 2016 AbstractFast and reliable separation of enantiomers of chiral nanoparticles requires elimination of all the forces that are independent of the nanoparticle handedness and creation of a sufficiently strong force that either pushes different enantiomers in opposite directions or delays the diffusion of one of them with respect to the other.
Rukhlenko ID +6 more
europepmc +6 more sources
Optical Bernoulli forces [PDF]
Physical Review A, 2013 By Bernoulli's law, an increase in the relative speed of a fluid around a body is accompanies by a decrease in the pressure. Therefore, a rotating body in a fluid stream experiences a force perpendicular to the motion of the fluid because of the unequal relative speed of the fluid across its surface.
Movassagh, Ramis, Johnson, Steven G.
openaire +3 more sources
Tailoring Optical Gradient Force and Optical Scattering and Absorption Force [PDF]
Scientific Reports, 2017 AbstractThe introduction of the concept of gradient force and scattering and absorption force is an important milestone in optical trapping. However the profiles of these forces are usually unknown, even for standard setups. Here, we successfully calculated them analytically via multipole expansion and numerically via Mie theory and fast Fourier ...
Du, Junjie +7 more
openaire +4 more sources
Optical forces in nanorod metamaterial [PDF]
Scientific Reports, 2015 AbstractOptomechanical manipulation of micro and nano-scale objects with laser beams finds use in a large span of multidisciplinary applications. Auxiliary nanostructuring could substantially improve performances of classical optical tweezers by means of spatial localization of objects and intensity required for trapping.
Pavel Ginzburg +2 more
openaire +4 more sources
Nature Photonics, 2011 Theoretical analysis suggests that there exists an optical attractive force capable of “pulling” microparticles towards a light source. This backwards force is generated by using interference to optimize the scattering of light in the forwards direction.
Chen, Jun +3 more
openaire +3 more sources
Optical trapping and critical Casimir forces [PDF]
Optical Manipulation and Structured Materials Conference, 2021 AbstractCritical Casimir forces emerge between objects, such as colloidal particles, whenever their surfaces spatially confine the fluctuations of the order parameter of a critical liquid used as a solvent. These forces act at short but microscopically large distances between these objects, reaching often hundreds of nanometers.
Agnese Callegari +3 more
openaire +4 more sources
Optical Force Stamping Lithography [PDF]
Nano Letters, 2011 Here we introduce a new paradigm of far-field optical lithography, optical force stamping lithography. The approach employs optical forces exerted by a spatially modulated light field on colloidal nanoparticles to rapidly stamp large arbitrary patterns comprised of single nanoparticles onto a substrate with a single-nanoparticle positioning accuracy ...
Spas Nedev +3 more
openaire +3 more sources