Liquid Transport due to Light Scattering

Schroll, Robert D.; Wunenburger, Régis; Casner, A.; Zhang, Wendy W.; Delville, Jean‐Pierre

doi:10.1103/physrevlett.98.133601

Cited by 42 publications

(39 citation statements)

References 21 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 The energy necessary to expel the jet can be originated by, for instance, physicochemical processes produced by surfactants 4 or thermal effects induced by the energy of concentrated irradiation. 5 Extensional flows constitute a remarkable class of techniques in which a force is applied on a drop to stretch an interface until a thin fluid ligament is obtained. A variety of driving forces can be used to expel the fluid jet.…”

Section: Introductionmentioning

confidence: 99%

On the validity of a universal solution for viscous capillary jets

et al. 2011

View full text Add to dashboard Cite

In this paper, we assess the validity of a universal solution based on the slenderness approximation to describe the velocity and shape of viscous capillary jets produced by two very different mechanisms: the action of the constant gravity force and the focusing effect of a coflowing gas stream. In the gravitational case, the jet's velocity distribution given by the universal solution is compared with that calculated numerically from the Navier-Stokes equations. The universal solution provides remarkably good predictions for the wide range of parameters considered in this work. Its accuracy generally improves as the Reynolds number increases and/or the Froude number decreases, probably because the jet viscous region decreases in this case. The flow focusing method was examined experimentally by acquiring and processing images of the tapering liquid meniscus formed between the feeding capillary and the discharge orifice. In this case, the universal solution provides satisfactory results for sufficiently slender liquid meniscus (i.e., for sufficiently large liquid viscosities and flow rates and small applied pressure drops), provided that the ratio capillaryto-orifice distance H to orifice diameter D takes sufficiently small values. If these conditions are not satisfied, the universal solution underestimates the jet radius close to the feeding capillary, but it still provides accurate predictions beyond the discharge orifice. For small H/D values, the accuracy of the universal solution is mainly limited by radial momentum effects associated with the sharp contraction of the meniscus shape, which becomes less slender as the liquid viscosity and flow rate decrease, or the pressure drop increases. For large H/D values, the driving force significantly deviates from its assumed constant value in the universal solution, giving rise to larger discrepancies between that solution and the experimental results even for slender shapes.

show abstract

Section: Introductionmentioning

confidence: 99%

On the validity of a universal solution for viscous capillary jets

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Hole et al (2005) trapped and propelled 250 nm diameter gold spheres; individual particle trajectories exhibited velocities up to 500 lm/s, showing promise for high throughput sorting. Recently Schroll et al (2007) have demonstrated bulk transport of liquid with mesoscopic spatial variations in refractive index under radiation pressure.…”

Section: Evanescent Field Trapping and Propulsionmentioning

confidence: 99%

Optofluidic integration for microanalysis

Hunt

Wilkinson

2007

Microfluid Nanofluid

129

View full text Add to dashboard Cite

This review describes recent research in the application of optical techniques to microfluidic systems for chemical and biochemical analysis. The ''lab-on-achip'' presents great benefits in terms of reagent and sample consumption, speed, precision, and automation of analysis, and thus cost and ease of use, resulting in rapidly escalating adoption of microfluidic approaches. The use of light for detection of particles and chemical species within these systems is widespread because of the sensitivity and specificity which can be achieved, and optical trapping, manipulation and sorting of particles show significant benefits in terms of discrimination and reconfigurability. Nonetheless, the full integration of optical functions within microfluidic chips is in its infancy, and this review aims to highlight approaches, which may contribute to further miniaturisation and integration.

show abstract

“…For example, a cylindrical dripping liquid jet was produced by light scattering in a microemulsion and the dripping rate was theoretically predicted [20]. The fluid motion due to the light scattering was also observed in a fluid layer with a flat interface [21], where a toroidal fluid recirculation was produced by a vertically incident laser beam. The scattering force induced an interface deformation that was found to be on the same order of magnitude as the deformation induced by the radiation pressure.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of nonlinear optofluidic processes in microdroplets

et al. 2016

View full text Add to dashboard Cite

Our prior work has shown that high quality (Q) factor whispering gallery modes (WGMs) in liquid microdroplets can potentially induce single-photon-level nonlinear effects through radiation pressure on the interface. However, little is known about the nonlinear effects of other processes involving scattering force and thermocapillarity. In this study, we establish a numerical framework that can calculate the fluid motion and the resultant nonlinearity induced by the optical scattering force and thermocapillarity. Then, we compare the magnitude of various nonlinear optofluidic processes induced by the radiation pressure, the thermocapillary effect, the scattering-induced optical force and the Kerr effect. Using realistic fluid parameters, we show that the radiation pressure due to the WGM produces the strongest nonlinear optofluidic effect.

show abstract

Liquid Transport due to Light Scattering

Cited by 42 publications

References 21 publications

On the validity of a universal solution for viscous capillary jets

On the validity of a universal solution for viscous capillary jets

Optofluidic integration for microanalysis

Comparative analysis of nonlinear optofluidic processes in microdroplets

Contact Info

Product

Resources

About