Wettability of leaves of a selection of New Zealand plants

Hall, D. M.; Burke, W. D.

doi:10.1080/0028825x.1974.10428872

Cited by 31 publications

(25 citation statements)

References 11 publications

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“…Several data about the surface wettability of leaves of single species exist in literature, but only a few publications present a general overview of a larger number of species (Martin & Juniper 1970;Rentschler 1971;Hall & Burke 1974). investigated the surface structures of over 200 water-repellent plant species, and concluded that most of them showed hierarchical surface structures, formed by convex to papillose epidermal cells and a very dense arrangement of three-dimensional epicuticular waxes of different shapes.…”

Section: Superhydrophobicity Plant Surfaces (A ) Structures For Supermentioning

confidence: 99%

Superhydrophobic and superhydrophilic plant surfaces: an inspiration for biomimetic materials

Koch

Barthlott

2009

Phil. Trans. R. Soc. A.

667

496

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The diversity of plant surface structures, evolved over 460 million years, has led to a large variety of highly adapted functional structures. The plant cuticle provides structural and chemical modifications for surface wetting, ranging from superhydrophilic to superhydrophobic. In this paper, the structural basics of superhydrophobic and superhydrophilic plant surfaces and their biological functions are introduced. Wetting in plants is influenced by the sculptures of the cells and by the fine structure of the surfaces, such as folding of the cuticle, or by epicuticular waxes. Hierarchical structures in plant surfaces are shown and further types of plant surface structuring leading to superhydrophobicity and superhydrophilicity are presented. The existing and potential uses of superhydrophobic and superhydrophilic surfaces for self-cleaning, drag reduction during moving in water, capillary liquid transport and other biomimetic materials are shown.

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Section: Superhydrophobicity Plant Surfaces (A ) Structures For Supermentioning

confidence: 99%

Superhydrophobic and superhydrophilic plant surfaces: an inspiration for biomimetic materials

Koch

Barthlott

2009

Phil. Trans. R. Soc. A.

667

496

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“…Specimens IÁIV are consistent with this description (Table A1.1), while specimens V and VI are not quite as effective. Hall & Burke (1974) identified other hydrophobic New Zealand plants, including two natives (Acama anserinifolia and Chionochloa rubra) with advCA 1508 or greater (Table A1.2). Contact angle data for the lotus and V. albicans are comparable to the values obtained by (1628 and 1658, respectively) and a recent review (Guo et al 2011) also quoted a contact angle of 'around 1628' for the lotus.…”

Section: Discussionmentioning

confidence: 99%

“…In selecting specimens, our aim was to identify particularly water repellent plants. Hall & Burke (1974) measured advancing contact angles and imaged microstructures for c. 50 New Zealand plants (not exclusively natives) and cited relevant earlier work. Notable surveys of exotic water repellent plants include the work of , who catalogued contact angles and microstructures for c. 200 species, and Wagner et al (2003), who quantitatively compared wetting properties with structure for 33 species.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic New Zealand leaves: contact angle and drop impact experiments

Fritsch

Willmott

Taylor

2013

Journal of the Royal Society of New Zealand

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Dynamic wetting of the adaxial leaf surfaces of several New Zealand native plants has been studied using water drops, contact angle measurements and drop impact experiments. Three native plants (Arthropodium bifurcatum, Euphorbia glauca and Veronica albicans) are identified as superhydrophobic, having advancing contact angles !1608, with B128 hysteresis and B108 roll off angle. These data are comparable to leaves of the lotus (Nelumbo nucifera), an international superhydrophobicity benchmark. Scanning electron microscopy reveals a range of epidermal microstructures and submicron epicuticle wax textures on native leaves, including superhydrophobic microstructures that are similar to those found on exotic leaves. Drop impacts on N. nucifera, A. bifurcatum and E. glauca were filmed using a high speed camera at Weber number between 15 and 200. Drops impacting on the two native plants exhibited asymmetry due to vascular bundles on the leaf surfaces. Biomimicry and dynamic wetting are important for development of industrial superhydrophobic surfaces.

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“…Research on plant leaf wettability has been carried out by many authors (Hall and Burke 1974;Barthlott and Neinhuis 1997;Brewer and Smith 1997;Brewer and Nunez 2007;Holder 2007;Fernández et al 2014). Comparing wettability results is not easy, since the leaf wettability (adaxial side) has been proved to change throughout the growing season (Van Wittenberghe et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

Papierowska

Szporak-Wasilewska

Szewińska

et al. 2018

Trees

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Key message Leaf CA measurement should take into account angle variation during measurement time. Leaf wettability of common deciduous forest plants is characterized by wetting contact angles ranging from 60° to 140° with a significant variation between species of the same family. Abstract Leaf wettability is an important phenomenon that has an influence on several processes such as the hydrological cycle, plant pathogen growth, or pollutant and pesticide absorption/deposition. The main objective of this research was to investigate the leaf wettability differences of 19 species (16 trees and 3 shrubs) of deciduous plants commonly occurring in Polish forests (temperate climate). The measurements were gathered as follows: 20 undamaged leaves were selected for each species and the wettability was determined by contact angle measurements with an optical goniometer CAM 100 using the sessile drop method. The contact angle was measured with 1-s intervals during 2 min from droplet deposition on adaxial and abaxial leaf surface. Laboratory analyses were completed during the summer of 2016 during full vegetation growth. A general CA decrease with time was observed on both leaf sides. The contact angle values ranged from 60° to 140° depending on species and leaf side. Differences between contact angle values at the beginning and the end of measurement reached 23.6° and engendered changes of wetting classes for some species. In many cases, no wettability class change was observed despite a CA lowering of 20°. The abaxial side was found to be the more repellent for 14 out of 19 species. Altogether, the leaves were classified from highly wettable to highly non-wettable, probably depending on the plant-survival strategy.

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Wettability of leaves of a selection of New Zealand plants

Cited by 31 publications

References 11 publications

Superhydrophobic and superhydrophilic plant surfaces: an inspiration for biomimetic materials

Superhydrophobic and superhydrophilic plant surfaces: an inspiration for biomimetic materials

Superhydrophobic New Zealand leaves: contact angle and drop impact experiments

Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

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