One-Dimensional Optically Bound Arrays of Microscopic Particles

Tatarkova, Svetlana A.; Carruthers, A. E.; Dholakia, Kishan

doi:10.1103/physrevlett.89.283901

Cited by 250 publications

(195 citation statements)

References 22 publications

(27 reference statements)

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“…The diagrams on the right elucidate how the particles fill up the approximately harmonic potential well created by the two counterpropagating beams. From Tatarkova et al, 2002. cording to this theory, the range of the electrostatic interaction is limited due to the particle charge screening in the presence of ions in the immersion medium. For the experimental parameters of Tatarkova et al the characteristic screening length is short ͑ Ӷ 100 nm͒ and the electrostatic interactions are restricted to a length scale of much less than a micron, an order of magnitude lower than the interparticle spacing observed in the bound particle arrays.…”

Section: B Longitudinal Optical Bindingmentioning

confidence: 99%

Colloquium: Gripped by light: Optical binding

2010

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͑Published 3 June 2010͒The light-matter interaction has been at the heart of major advances from the atomic scale right to the microscopic scale over the past four decades. Confinement by light, embodied by the area of optical trapping, has had a major influence across all of the natural sciences. However, an emergent and powerful topic within this field that has steadily merged but not gained much recognition is optical binding: the importance of exploring the optically mediated interaction between assembled objects that can cause attractive and repulsive forces and dramatically influence the way they assemble and organize themselves. This offers routes for colloidal self-assembly, crystallization, and organization of templates for biological and colloidal sciences. In this Colloquium, this emergent area is reviewed looking at the pioneering experiments in the field and the various theoretical approaches that aim to describe this behavior. The latest experimental studies in the field are reviewed and theoretical approaches are now beginning to converge to describe the binding behavior seen. Recent links between optical binding and nonlinearity are explored as well as future themes and challenges.

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Section: B Longitudinal Optical Bindingmentioning

confidence: 99%

Colloquium: Gripped by light: Optical binding

2010

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“…This interaction is also called optical binding 7 and modifies the particles' equilibrium positions or can even create self-arranged structures of the particles. [8][9][10][11][12][13] In the case where multiple illuminated particles are in motion within the fluid, the hydrodynamic interactions take place which make the inter-particle interactions even more complex. 14 The hydrodynamic interactions between multiple particles have been also studied with the optical manipulation techniques for particles arranged into linear chains, 15,16 ring-like structures, [17][18][19][20] or two-dimensional matrix structures.…”

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confidence: 99%

Speed enhancement of multi-particle chain in a traveling standing wave

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2012

Applied Physics Letters

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A moving array of optical traps created by interference of two counter-propagating evanescent waves has been used for delivery of particle chains up to 18 micro-particles long immersed in water. The particles were optically self-arranged into a linear chain with well-separated distances between them. We observed a significant increase in the delivery speed of the whole structure as the number of particles in the chain increased. This could provide faster sample delivery in microfluidic systems. We quantified the contributions to the speed enhancement caused by the optical and hydrodynamic interactions between the particles.

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“…Whilst longitudinal binding (i.e. binding along the propagation axis) has been well characterized in a number of trapping geometries [23,24], the origin of lateral binding is still not well established. A non-linear systems approach may provide further insights into the observed pattern formation for such lateral binding, although in this case the granularity of the system would become increasingly important.…”

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confidence: 99%

Experimental Observation of Modulation Instability and Optical Spatial Soliton Arrays in Soft Condensed Matter

2007

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In this Letter we report observations of optically induced self-organization of colloidal arrays in the presence of un-patterned counter-propagating evanescent waves. The colloidal arrays formed along the laser propagation-axis are shown to be linked to the break-up of the incident field into optical spatial solitons, the lateral spacing of the arrays being related to modulation instability of the soft condensed matter system.

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One-Dimensional Optically Bound Arrays of Microscopic Particles

Cited by 250 publications

References 22 publications

Colloquium: Gripped by light: Optical binding

Colloquium: Gripped by light: Optical binding

Speed enhancement of multi-particle chain in a traveling standing wave

Experimental Observation of Modulation Instability and Optical Spatial Soliton Arrays in Soft Condensed Matter

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