Optical Binding Phenomena: Observations and Mechanisms

Abstract

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Implementation of the electrohydrodynamics’ perfect dielectric model in OpenFOAM

“…( 6) or of Eq. ( 11) did not affect the final drop deformation (equal to 0.132) when the MPLIC scheme and ϕ w1 =174.3 V were used, in accordance with Taylor (2011), where it is stated that the electrostrictive force does not affect the incompressible droplet shape. The obtained final drop deformation did not change even in cases in which either of the parameters c els1 or c els2 was set to be equal to 1.5 (this value was used previously in Shneider and Pekker (2013)).…”

“…Based on the comparison of Eqs. ( 26) and ( 5), and the statement in Taylor (2011) that the electrostrictive force is exactly balanced by a pressure increase in the incompressible drop, it could be expected that inclusion of an expression for the electrostrictive force would result just in a pressure increase. Axially symmetric geometries, as in Figure 2, were made.…”

Highly efficient photoelectrochemical response by sea-urchin shaped ZnO/TiO2 nano/micro hybrid heterostructures co-sensitized with CdS/CdSe

“…The size of TiO 2 microspheres suitable for scattering light over the entire visible range was calculated using Mie scattering theory, which predicts the effective electric and/or magnetic polarizability densities of scattering objects. 19,20 Light scattering by a spherical particle much smaller than the incident light wavelength can be accurately determined by the Mie solution. The scattered eld of a single dielectric sphere with radius r 0 and relative refractive index n can be decomposed into a multipole series.…”

Nanoscale Tunable Optical Binding Mediated by Hyperbolic Metamaterials

“…However, those methods rely on either high field intensities or specific particles' materials, which may limit their generality. Increasing optical trap stiffness without a need to use high-intensity illumination, flexible control over interparticle distances as well as anisotropic optical binding in different directions are among the long-standing challenges, valuable from both fundamental and practical standpoints 33 . Parameters of optical binding can be significantly influenced by introducing a nearby interface.…”

“…Increasing optical trap stiffness without a need to use high-intensity illumination, flexible control over interparticle distances, and anisotropic optical binding in different directions are among the long-standing challenges, valuable from both fundamental and practical standpoints. 33 Parameters of optical binding can be significantly influenced by introducing a nearby interface. It modifies both the incident field due to Fresnel reflection and effective particle polarizabilities owing to nearfield interactions, qualitatively understood with the help of the image theory.…”