Evaporating droplets on inclined plant leaves and synthetic surfaces: Experiments and mathematical models

Tredenick, Eloise C.; Forster, W. A.; Pethiyagoda, Ravindra; Leeuwen, R.M. van; McCue, Scott W.

doi:10.1016/j.jcis.2021.01.070

Cited by 30 publications

(19 citation statements)

References 61 publications

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“…However, we can reasonably speculate that this contribution will vary depending on the plant species, environmental conditions and growth conditions. The contribution of each pathway may also be governed by the method of cuticle isolation and chemical treatments, and in the context of agrochemical penetration, pre-treatments and applied droplet chemical composition, including surfactants 4 , 11 , 18 , 29 . One study 5 found that water transport was 2.8 times higher in the aqueous pathway than the lipophilic pathway of astomatous isolated cuticles, with significant variation between species.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of moisture diffusion and adsorption in plant cuticles including the role of cellulose

Tredenick

Farquhar

2021

Nat Commun

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Food production must increase significantly to sustain a growing global population. Reducing plant water loss may help achieve this goal and is especially relevant in a time of climate change. The plant cuticle defends leaves against drought, and so understanding water movement through the cuticle could help future proof our crops and better understand native ecology. Here, via mathematical modelling, we identify mechanistic properties of water movement in cuticles. We model water sorption in astomatous isolated cuticles, utilising three separate pathways of cellulose, aqueous pores and lipophilic. The model compares well to data both over time and humidity gradients. Sensitivity analysis shows that the grouping of parameters influencing plant species variations has the largest effect on sorption, those influencing cellulose are very influential, and aqueous pores less so but still relevant. Cellulose plays a significant role in diffusion and adsorption in the cuticle and the cuticle surfaces.

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Section: Introductionmentioning

confidence: 99%

Dynamics of moisture diffusion and adsorption in plant cuticles including the role of cellulose

Tredenick

Farquhar

2021

Nat Commun

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“…Hygroscopic wetting can prolong droplet evaporation and penetration. Experimental and theoretical results show that at 50-70%RH and 20°C, a 1µL droplet of pure water will evaporate in 0.5-0.7 hours on a leaf [6,33], and with the inclusion of CaCl 2 in the droplet, the mechanistic model shows droplet evaporation is prolonged to 9.4 hours [6].…”

Section: Hygroscopicity and Point Of Deliquescencementioning

confidence: 99%

Materials on Plant Leaf Surfaces are Deliquescent in a Range of Environments

Tredenick

Stuart‐Williams²,

Enge

2021

Preprint

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Many materials on plant leaf surfaces are hygroscopic, and they impact foliar applied agrochemicals, foliar water uptake, gas exchange and stomatal density. Few studies are available on the nature of these substances, and we quantify how hygroscopic these materials are. Water vapor sorption experiments on twelve leaf washes were conducted and analyzed with inductively coupled plasma-optical emission spectroscopy and X-ray diffraction. Oils were found in all Eucalyptus samples studied. The leaf materials can deliquesce and form an aqueous solution in a variety of environments where plants grow, including glasshouses and by the ocean. All plant materials studied were hygroscopic. For mangroves that excrete salt to the leaf surfaces, significant sorption occurred at high humidity of a total of 316 mg (∼0.3 mL) over 6–10 leaves. These fitted a Guggenheim, Anderson, and de Böer isotherm; mostly due to sodium chloride, though other more hygroscopic materials were also present.

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“…Not only is this problem directly relevant to the industrial manufacture of OLED displays, but it is also of interest in its own right as a fundamental scientific problem that is key to understanding the many other situations in which evaporating droplets on non-planar substrates occur (such as, for example, the agrochemical spraying of plants that motivated the work of Tredenick et al. 2021).…”

Section: Introductionmentioning

confidence: 99%

Evaporation of a thin droplet in a shallow well: theory and experiment

D’Ambrosio¹,

Colosimo

Duffy³

et al. 2021

J. Fluid Mech.

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Motivated by the industrial manufacture of organic light-emitting-diode displays, we formulate and analyse a mathematical model for the evolution of a thin droplet in a shallow axisymmetric well of rather general shape both before and after touchdown that accounts for the spatially non-uniform evaporation of the fluid, perform physical experiments using three cylindrical wells with different small aspect ratios, and validate the mathematical model by comparing the present experimental results with the corresponding theoretical predictions for a cylindrical well.

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Evaporating droplets on inclined plant leaves and synthetic surfaces: Experiments and mathematical models

Cited by 30 publications

References 61 publications

Dynamics of moisture diffusion and adsorption in plant cuticles including the role of cellulose

Dynamics of moisture diffusion and adsorption in plant cuticles including the role of cellulose

Materials on Plant Leaf Surfaces are Deliquescent in a Range of Environments

Evaporation of a thin droplet in a shallow well: theory and experiment

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