Elastocapillarity-based transport of liquids
in flexible confinements and over soft substrates

Samy, R. A.; Suthanthiraraj, Pearlson P. A.; George, Dileep; Iqbal, Razia; Sen, A. K.

doi:10.1007/s10404-019-2266-2

Cited by 15 publications

(11 citation statements)

References 172 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Honeyeaters have brushed-tipped tongues that may trap liquid among the bristles using surface tension (e.g. Samy et al, 2019), which could be drawn close together to effectively create an enclosed capsule of liquid at the tongue tip (Paton and Collins, 1989). Honeyeaters also have lingual grooves, which could use capillary filling to draw the nectar into the rest of the tongue body (Fig.…”

Section: How Do Other Nectarivorous Birds Drink Nectar?mentioning

confidence: 99%

See 1 more Smart Citation

On the feeding biomechanics of nectarivorous birds

Cuban

Hewes

Sargent

et al. 2022

Journal of Experimental Biology

View full text Add to dashboard Cite

Nectar-feeding birds employ unique mechanisms to collect minute liquid rewards hidden within floral structures. In recent years, techniques developed to study drinking mechanisms in hummingbirds have prepared the groundwork for investigating nectar feeding across birds. In most avian nectarivores, fluid intake mechanisms are understudied or simply unknown beyond hypotheses based on their morphological traits, such as their tongues, which are semi-tubular in sunbirds, frayed-tipped in honeyeaters and brush-tipped in lorikeets. Here, we use hummingbirds as a case study to identify and describe the proposed drinking mechanisms to examine the role of those peculiar traits, which will help to disentangle nectar-drinking hypotheses for other groups. We divide nectar drinking into three stages: (1) liquid collection, (2) offloading of aliquots into the mouth and (3) intraoral transport to where the fluid can be swallowed. Investigating the entire drinking process is crucial to fully understand how avian nectarivores feed; nectar-feeding not only involves the collection of nectar with the tongue, but also includes the mechanisms necessary to transfer and move the liquid through the bill and into the throat. We highlight the potential for modern technologies in comparative anatomy [such as microcomputed tomography (μCT) scanning] and biomechanics (such as tracking BaSO4-stained nectar via high-speed fluoroscopy) to elucidate how disparate clades have solved this biophysical puzzle through parallel, convergent or alternative solutions.

show abstract

Section: How Do Other Nectarivorous Birds Drink Nectar?mentioning

confidence: 99%

“…These morphological characteristics determine the range of biomechanical possibilities for liquid collection and transport (e.g. Samy et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

On the feeding biomechanics of nectarivorous birds

Cuban

Hewes

Sargent

et al. 2022

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…In short, during bendotaxis, the liquid droplet always moves toward the free end. More details about elastocapillary-based liquid transport on flexible membranes and capillary tubes can be found elsewhere …”

Section: Passive Liquid-transport Mechanismsmentioning

confidence: 99%

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

et al. 2022

View full text Add to dashboard Cite

Effective manipulation of liquids on open surfaces without external energy input is indispensable for the advancement of point-of-care diagnostic devices. Open-surface microfluidics has the potential to benefit health care, especially in the developing world. This review highlights the prospects for harnessing capillary forces on surface-microfluidic platforms, chiefly by inducing smooth gradients or sharp steps of wettability on substrates, to elicit passive liquid transport and higher-order fluidic manipulations without off-the-chip energy sources. A broad spectrum of the recent progress in the emerging field of passive surface microfluidics is highlighted, and its promise for developing facile, low-cost, easy-to-operate microfluidic devices is discussed in light of recent applications, not only in the domain of biomedical microfluidics but also in the general areas of energy and water conservation.

show abstract

“…In microfluidic calculations, the hydrodynamic resistance R hyd [32] to fluid flow in a channel of rectangular cross-section of height h and width w is given by: R hyd = 12µL…”

Section: Analysis Of the Wax Plug Advancement In The Channelmentioning

confidence: 99%

“…where µ is the viscosity of the fluid and L is the wetted length of the channel. For capillary flow, the flow rate (Q) [32] is obtained by taking the time derivative of the volume whL (with only L changing with time as the wax flows):…”

Section: Analysis Of the Wax Plug Advancement In The Channelmentioning

confidence: 99%

Capillary Flow-Driven and Magnetically Actuated Multi-Use Wax Valves for Controlled Sealing and Releasing of Fluids on Centrifugal Microfluidic Platforms

et al. 2022

View full text Add to dashboard Cite

Compact disc (CD)-based centrifugal microfluidics is an increasingly popular choice for academic and commercial applications as it enables a portable platform for biological and chemical assays. By rationally designing microfluidic conduits and programming the disc’s rotational speeds and accelerations, one can reliably control propulsion, metering, and valving operations. Valves that either stop fluid flow or allow it to proceed are critical components of a CD platform. Among the valves on a CD, wax valves that liquify at elevated temperatures to open channels and that solidify at room temperature to close them have been previously implemented on CD platforms. However, typical wax valves on the CD fluidic platforms can be actuated only once (to open or to close) and require complex fabrication steps. Here, we present two new multiple-use wax valve designs, driven by capillary or magnetic forces. One wax valve design utilizes a combination of capillary-driven flow of molten wax and centrifugal force to toggle between open and closed configurations. The phase change of the wax is enabled by heat application (e.g., a 500-mW laser). The second wax valve design employs a magnet to move a molten ferroparticle-laden wax in and out of a channel to enable reversible operation. A multi-phase numerical simulation study of the capillary-driven wax valve was carried out and compared with experimental results. The capillary wax valve parameters including response time, angle made by the sidewall of the wax reservoir with the direction of a valve channel, wax solidification time, minimum spin rate of the CD for opening a valve, and the time for melting a wax plug are measured and analyzed theoretically. Additionally, the motion of the molten wax in a valve channel is compared to its theoretical capillary advance with respect to time and are found to be within 18.75% of the error margin.

show abstract

Elastocapillarity-based transport of liquids in flexible confinements and over soft substrates

Cited by 15 publications

References 172 publications

On the feeding biomechanics of nectarivorous birds

On the feeding biomechanics of nectarivorous birds

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

Capillary Flow-Driven and Magnetically Actuated Multi-Use Wax Valves for Controlled Sealing and Releasing of Fluids on Centrifugal Microfluidic Platforms

Contact Info

Product

Resources

About