Chiral and plasmonic hybrid dimer pair: reversal of both near- and far-field optical binding forces

AbstractIn this paper we show analytically and numerically the formation of a near-field stable optical binding between two identical plasmonic particles, induced by an incident plane wave. The equilibrium binding distance is controlled by the angle between the polarization plane of the incoming field and the dimer axis, for which we have calculated an explicit formula. We have found that the condition to achieve stable binding depends on the particle’s dielectric function and happens near the frequency of the dipole plasmonic resonance. The binding stiffness of this stable attaching interaction is four orders of magnitude larger than the usual far-field optical binding and is formed orthogonal to the propagation direction of the incident beam (transverse binding). The binding distance can be further manipulated considering the magneto-optical effect and an equation relating the desired equilibrium distance with the required external magnetic field is obtained. Finally, the effect induced by the proposed binding method is tested using molecular dynamics simulations. Our study paves the way to achieve complete control of near-field binding forces between plasmonic nanoparticles.

Download Full-text

Stable Optical Trapping Based on Optical Binding Forces

Physical Review Letters ◽

10.1103/physrevlett.96.113903 ◽

2006 ◽

Vol 96 (11) ◽

Cited By ~ 70

Author(s):

Tomasz M. Grzegorczyk ◽

Brandon A. Kemp ◽

Jin Au Kong

Keyword(s):

Optical Trapping ◽

Binding Forces ◽

Optical Binding

Download Full-text

Enhanced optical magnetism for reversed optical binding forces between silicon nanoparticles in the visible region

Optics Express ◽

10.1364/oe.25.000431 ◽

2017 ◽

Vol 25 (1) ◽

pp. 431 ◽

Cited By ~ 6

Author(s):

Taka-aki Yano ◽

Yuta Tsuchimoto ◽

Remo Proietti Zaccaria ◽

Andrea Toma ◽

Alejandro Portela ◽

...

Keyword(s):

Silicon Nanoparticles ◽

Visible Region ◽

Binding Forces ◽

Optical Binding

Download Full-text

Optical binding forces between plasmonic nanocubes: A numerical study based on discrete-dipole approximation

Chinese Physics B ◽

10.1088/1674-1056/23/1/017302 ◽

2014 ◽

Vol 23 (1) ◽

pp. 017302 ◽

Cited By ~ 1

Author(s):

Xiao-Ming Zhang ◽

Jun-Jun Xiao ◽

Qiang Zhang

Keyword(s):

Numerical Study ◽

Dipole Approximation ◽

Discrete Dipole Approximation ◽

Binding Forces ◽

Optical Binding

Download Full-text

Decoration of specific sites on freeze-fractured membranes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100081565 ◽

1978 ◽

Vol 36 (2) ◽

pp. 140-141

Author(s):

H. Gross ◽

H. Moor

Keyword(s):

Pure Water ◽

Freeze Fracture ◽

Chemical Properties ◽

Surface Forces ◽

Sulfate Pentahydrate ◽

Copper Sulfate Pentahydrate ◽

Physico Chemical ◽

Water Of Hydration ◽

Small Container ◽

Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Download Full-text

Possible applications of fraunhofer holography in high resolution electron microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100108258 ◽

1978 ◽

Vol 36 (1) ◽

pp. 222-223 ◽

Cited By ~ 1

Author(s):

N. Bonnet ◽

M. Troyon ◽

P. Gallion

Keyword(s):

Electron Microscopy ◽

High Resolution ◽

Transfer Function ◽

Radiation Damage ◽

High Resolution Electron Microscopy ◽

Far Field ◽

Field Region ◽

Crystalline Materials ◽

Resolution Electron ◽

The Ideal

Two main problems in high resolution electron microscopy are first, the existence of gaps in the transfer function, and then the difficulty to find complex amplitude of the diffracted wawe from registered intensity. The solution of this second problem is in most cases only intended by the realization of several micrographs in different conditions (defocusing distance, illuminating angle, complementary objective apertures…) which can lead to severe problems of contamination or radiation damage for certain specimens.Fraunhofer holography can in principle solve both problems stated above (1,2). The microscope objective is strongly defocused (far-field region) so that the two diffracted beams do not interfere. The ideal transfer function after reconstruction is then unity and the twin image do not overlap on the reconstructed one.We show some applications of the method and results of preliminary tests.Possible application to the study of cavitiesSmall voids (or gas-filled bubbles) created by irradiation in crystalline materials can be observed near the Scherzer focus, but it is then difficult to extract other informations than the approximated size.

Download Full-text