Microscale Mechanism of Age Dependent Wetting Properties of Prickly Pear Cacti (Opuntia).

  title={Microscale Mechanism of Age Dependent Wetting Properties of Prickly Pear Cacti (Opuntia).},
  author={Konrad Rykaczewski and Jacob S. Jordan and R. Scott Linder and Erik T Woods and Xiaoda Sun and Nicholas Kemme and Kenneth C. Manning and Brian R. Cherry and Jeffery L. Yarger and Lucas C. Majure},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  volume={32 36},
Cacti thrive in xeric environments through specialized water storage and collection tactics such as a shallow, widespread root system that maximizes rainwater absorption and spines adapted for fog droplet collection. However, in many cacti, the epidermis, not the spines, dominates the exterior surface area. Yet, little attention has been dedicated to studying interactions of the cactus epidermis with water drops. Surprisingly, the epidermis of plants in the genus Opuntia, also known as prickly… 

Banana Leaf Surface’s Janus Wettability Transition from the Wenzel State to Cassie–Baxter State and the Underlying Mechanism

Janus wettability plays an important role in certain special occasions. In this study, field emission scanning electron microscopy (FESEM) was used to observe the surface microstructure of banana

Hydraulic Strategy of Cactus Root–Stem Junction for Effective Water Transport

The results suggest that the R–S junction functions as a hydraulic safety valve that can maximize water uptake in axial and radial directions at limited rainfall.

Assessment of Orchid Surfaces Using Top-Down Contact Angle Mapping

Top-down contact angle measurements are used to characterize the green leaves and purple flowers of both old and young the Cattleya warneri orchids, finding young leaves are found to be hydrophobic whilst old leaves become practically hydrophilic across their entirety.

Biomimicking of phyto-based super-hydrophobic surfaces towards prospective applications: a review

The self-cleaning mechanism attribute of organic surfaces is grabbing much attention in most of the commercially available commodities. Among organic surfaces, investigations on hydrophobic surfaces

Controlled Mass Rearing of Cochineal Insect (Hemiptera: Dactylopiidae) Using Two Laboratory-Scale Production Systems in Peru

It is concluded that cochineal production under controlled artificial conditions is feasible and sustainable, removing the need for natural and biological support and overcoming the environmental limitations posed by traditional production methods.

Extraction and thermal characterization of epicuticular wax from Opuntia streptacantha at different stages of maturation

The content of epicuticular waxes on the surface of the cladodes of Opuntia streptacantha and their thermal characteristics based on the stage of maturation of the plant were determined. The moisture



Seasonal changes of leaf surface contamination in beech, oak, and ginkgo in relation to leaf micromorphology and wettability

The leaf surfaces of beech, oak and ginkgo have been investigated with respect to contamination with particles during one growing season. Based on the observation that particles are removed from

Minimum cuticular conductance and cuticle features of Picea abies and Pinus cembra needles along an altitudinal gradient in the Dolomites (NE Italian Alps).

Because desiccation resistance did not decrease with altitude in either species, it is concluded that high-altitude conifers of the Dolomites are not susceptible to winter Desiccation at the tree line.

Chemical composition of the Prunus laurocerasus leaf surface. Dynamic changes of the epicuticular wax film during leaf development.

The seasonal development of adaxial Prunus laurocerasus leaf surfaces was studied using newly developed methods for the mechanical removal of epicuticular waxes, and the first report quantifying the loss of individual compound classes (acetates and alcohols) from the epicUTicular wax mixture is reported.

Chemical Composition and Recrystallization of Epicuticular Waxes: Coiled Rodlets and Tubules

It was demonstrated that coiled rodlets grew exclusively from total waxes of B. sempervirens and C. segetum and L. arenarius wax or pure hentriacontane-14,16-dione.

Dew harvesting efficiency of four species of cacti

All four cacti to harvest dew on their stems and spines were found, while the spines of three of the species were found to be hydrophilic in nature, while F. wislizenii was hydrophobic; the stems of all four species were hydophilic.

Purity of the sacred lotus, or escape from contamination in biological surfaces

It is shown here for the first time that the interdependence between surface roughness, reduced particle adhesion and water repellency is the keystone in the self-cleaning mechanism of many biological surfaces.

Hierarchical Surface Architecture of Plants as an Inspiration for Biomimetic Fog Collectors.

The highly wettable barbed (barb = conical structure) awn is demonstrated as a model to develop optimized fog collectors with a high fog-capturing capability, an effective water transport, and above all an efficient fog collection.

A multi-structural and multi-functional integrated fog collection system in cactus

This unique system is composed of well-distributed clusters of conical spines and trichomes on the cactus stem; each spine contains three integrated parts that have different roles in the fog collection process according to their surface structural features.

Surface and Wetting Properties of Embiopteran (Webspinner) Nanofiber Silk.

The dynamic reorganization of the silk sheets during the droplet movement leads to formation of "super-pinning sites" that give embiopteran silk one of the strongest adhesions to water of any natural hydrophobic surface.