Nanoporous artificial proboscis for probing minute amount of liquids

Tsai, Chen-Chih; Mikeš, P.; Andrukh, Taras; White, Edgar; Monaenkova, Daria; Burtovyy, Oleksandr; Burtovyy, Ruslan; Rubin, Binyamin; Lukáš, David; Luzinov, Igor; Owens, Jeffery R.; Kornev, Konstantin G.

doi:10.1039/c1nr10773a

Cited by 38 publications

(54 citation statements)

References 50 publications

(76 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the asymptotic limit, as the b/a ratio tends to 1, the meniscus height approaches that on a cylinder, z 0 % ad lnð ffiffi ffi 1 p e g =2Þ; which coincides with the Lo solution [28] when u % p/2. The observation that greater ellipticity results in a higher meniscus has not been discussed in the engineering literature, yet is important for the design of probes and other microfluidic devices [29]. The meniscus profile is also obtained analytically and is given in §6.…”

Section: ð4:4þmentioning

confidence: 99%

See 1 more Smart Citation

Hydrophobic–hydrophilic dichotomy of the butterfly proboscis

Lehnert

Monaenkova

Andrukh

et al. 2013

J. R. Soc. Interface.

Self Cite

102

View full text Add to dashboard Cite

Mouthparts of fluid-feeding insects have unique material properties with no human-engineered analogue: the feeding devices acquire sticky and viscous liquids while remaining clean. We discovered that the external surface of the butterfly proboscis has a sharp boundary separating a hydrophilic drinking region and a hydrophobic non-drinking region. The structural arrangement of the proboscis provides the basis for the wetting dichotomy. Theoretical and experimental analyses show that fluid uptake is associated with enlargement of hydrophilic cuticular structures, the legulae, which link the two halves of the proboscis together. We also show that an elliptical proboscis produces a higher external meniscus than does a cylindrical proboscis of the same circumference. Fluid uptake is additionally facilitated in sap-feeding butterflies that have a proboscis with enlarged chemosensory structures forming a brush near the tip. This structural modification of the proboscis enables sap feeders to exploit films of liquid more efficiently. Structural changes along the proboscis, including increased legular width and presence of a brush-like tip, occur in a wide range of species, suggesting that a wetting dichotomy is widespread in the Lepidoptera.

show abstract

Section: ð4:4þmentioning

confidence: 99%

“…Variations in these characters could have facilitated diversification of feeding habits and influenced the adaptive radiation of fluid-feeding insects. The wetting properties of the butterfly proboscis can provide similar strategies for the development of micro-and nanofluidic probes [29].…”

Section: Conclusion Reconciling Drinking and Cleaningmentioning

confidence: 99%

Hydrophobic–hydrophilic dichotomy of the butterfly proboscis

Lehnert

Monaenkova

Andrukh

et al. 2013

J. R. Soc. Interface.

Self Cite

102

View full text Add to dashboard Cite

show abstract

“…Despite this unique ability, the natural design is limited by the lower hydrophilic segments of the proboscis, with water contact angles (CA) of 45°, and can be easily contaminated by the extracted fluids . Current advances in nanofabrication approaches have since been used to reproduce the hydrophilic nature of the butterfly's proboscis, with the fabrication of oleophilic‐wicking fibrous tubes that decreases the energy required for fluid extraction and transport . These oleophilic tubes are, however, also very prone to fluid contamination, due to the adhesion of liquid residue upon droplet release .…”

Section: Introductionmentioning

confidence: 99%

Superamphiphobic Bionic Proboscis for Contamination‐Free Manipulation of Nano and Core–Shell Droplets

Wong

Liu

Tricoli

2017

Small

View full text Add to dashboard Cite

Manipulation of nanoliter droplets is a key step for many emerging technologies including ultracompact microfluidics devices, 3D and flexible electronic printing. Despite progress, contamination-free generation and release of nanoliter droplets by compact low-cost devices remains elusive. In the present study, inspired by butterflies' minute manipulation of fluids, the authors have engineered a superamphiphobic bionic proboscis (SAP) layout that surpasses synthetic and natural designs. The authors demonstrate the scalable fabrication of SAPs with tunable inner diameters down to 50 µm by the rapid gas-phase nanotexturing of the outer and inner surfaces of readily available hypodermic needles. Optimized SAPs achieve contamination-free manipulation of water and oil droplets down to a liquid surface tension of 26.56 mN m and a volume of 10 nL. The unique potential of this layout is showcased by the rapid and carefully controlled in-air synthesis of core-shell droplets with well-controlled compositions. These findings provide a new low-cost tool for high-precision manipulation of nanoliter droplets, offering a powerful alternative to established thermal- and electrodynamic-based devices.

show abstract

“…The drinking region plays a critical role in fluid acquisition, especially for Lepidoptera that feed from porous materials such as rotten fruit. Submicrometer pores (interlegular spaces) in the proboscis, which is initially air filled, provide strong capillary action favoring the uptake of fluid droplets and films, and facilitating fluid withdrawal from substrate pores (Tsai et al, 2011;Monaenkova et al, 2012). The proboscises of Lepidoptera that feed on porous materials, such as rotten fruit, typically have a brush-like lateral series of chemosensilla that aid fluid uptake (Knopp and Krenn, 2003;Monaenkova et al, 2012;Lehnert et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Paradox of the drinking-straw model of the butterfly proboscis

Tsai

Monaenkova

beard

et al. 2014

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

There was an error published in J. Exp. Biol. 217, 2130-2138. Eqns A12 and A13 in the Appendix were cropped. The online pdf and fulltext versions (but not the print version) of the article have been corrected. The correct versions of the equations also appear below.We apologise to the authors and readers for this error. ABSTRACT Fluid-feeding Lepidoptera use an elongated proboscis, conventionally modeled as a drinking straw, to feed from pools and films of liquid. Using the monarch butterfly, Danaus plexippus (Linnaeus), we show that the inherent structural features of the lepidopteran proboscis contradict the basic assumptions of the drinking-straw model. By experimentally characterizing permeability and flow in the proboscis, we show that tapering of the food canal in the drinking region increases resistance, significantly hindering the flow of fluid. The calculated pressure differential required for a suction pump to support flow along the entire proboscis is greater than 1 atm (~101 kPa) when the butterfly feeds from a pool of liquid. We suggest that behavioral strategies employed by butterflies and moths can resolve this paradoxical pressure anomaly. Butterflies can alter the taper, the interlegular spacing and the terminal opening of the food canal, thereby controlling fluid entry and flow, by splaying the galeal tips apart, sliding the galeae along one another, pulsing hemolymph into each galeal lumen, and pressing the proboscis against a substrate. Thus, although physical construction of the proboscis limits its mechanical capabilities, its functionality can be modified and enhanced by behavioral strategies.

show abstract

Nanoporous artificial proboscis for probing minute amount of liquids

Cited by 38 publications

References 50 publications

Hydrophobic–hydrophilic dichotomy of the butterfly proboscis

Hydrophobic–hydrophilic dichotomy of the butterfly proboscis

Superamphiphobic Bionic Proboscis for Contamination‐Free Manipulation of Nano and Core–Shell Droplets

Paradox of the drinking-straw model of the butterfly proboscis

Contact Info

Product

Resources

About