The naturally occurring micro-condensation surface has been mimicked using random and ordered an array of 0.6 mm glass spheres on a waxy background, and it is seen that an ordered array of spheres provide optimum conditions for micro-condensation. A Namib Desert beetle is often cited as bioinspiration for further advancement, in a narrative which focuses on patterned wettability of its bumpy elytra as a means of transporting accumulated water from its back to its mouth. Furthermore, potential applications of anisotropic wetting micro-/nanostructures in microreactors, biomedical devices, and sensors are presented. Thus, according to the rates of condensation, the order of surface wettability can be characterized as −OH > −CONH. Transport units were easily fabricated via a commercially available 3D printing technique, so that the customized and directional spontaneous directional transport can be realized for liquid distribution, serpentine loop transportation, and speed control. Superwetting surfaces have received increasing attention because of their rich practical applications. Andrew R. Parker and Chris R. Lawrence, “Water Capture by a Desert Beetle,” Nature 414 (November 2001): 33–34, doi:10.1038/35102108. ... 2001 Water capture by a desert beetle. Atmospheric water capture (AWC) is an alternative method of localized water production whereby water vapor is removed from air to produce drinking water. Clothing is intimately linked to human comfort. There is a dimension of meanings attached to the various uses of metaphor, ranging from the ornamental view at one hand to the rational view at the other [1]. The desired spontaneous transportation was successfully obtained even when the supply rate speed was up to 632.5 μl/min and length of platform reached a scale of hundreds of millimeters. Inspired by biological surfaces with anisotropic wetting properties, researchers have made great progress in the design and fabrication of micro-/nanostructures for desired anisotropic wettability. 2c(i)). ... Another bio-inspiration is about water collection by tip of cactus spine or peaks of beetle bump. Both effects arise from droplet-induced deformations of the substrate near the contact line. Essentially it is the process by which most of the ideas come into being. This principle is used by insects [11. Anisotropically wetting substrates enable useful control of droplet behavior across a range of useful wetting applications. Fog harvesting of the Namib desert beetles has inspired many researchers to design artificial fog harvesting hybrid surfaces, which commonly involve flat hydrophilic patterns on hydrophobic surfaces. July 24, 2014. The results indicated that both transport distance and speed varied periodically with time, which was mainly due to the difference in curvature caused by asymmetric structure and capillary force. The understanding of the efficient and well-directed water transport and collection in D. marginata is expected to provide valuable insights to design efficient surfaces for fog-harvesting applications. In the first part, superwettable creatures in nature, namely, superhydrophobic self‐cleaning lotus leaf, high‐adhesion superhydrophobic rose petal, amphiphobic springtail, patterned wetting desert beetles, slippery pitcher plant, were introduced. With the highly interdisciplinary of research and great development of microfabrication techniques, artificial wettable-nonwettable micropatterns inspired by water-collection behavior of desert beetles have been successfully fabricated. Over the past few years, many studies have shown interest in designing surfaces with enhanced water condensation and removal properties. In this work, a novel bamboo-joint-like platform with tapered micro-tubes as transport units is presented, which not only enables the spontaneous transport and extrusion of liquids but also enables customized and optional assembly of transport devices. © 2008-2020 ResearchGate GmbH. Open microgroove is one kind of capillary-driven superwicking surface structure. Metaphors role in the ecological design is essential and necessary. Nature, 414, 33. Background. Numerous examples shall be included, showing experimental and numerical studies of various innovative properties of superhydrophobic structures. Meanwhile micro-reaction with microfluidic chip was realized on the SSPS. The AuthorFazale Rana. ... 24,25 For Stenocara, on the macroscopic scale, the elytra of the beetle are covered by a bumpy array (Fig. Additionally, the film shows good antibacterial behavior, which can improve the water safety. Metaphor plays a central role in changing the architectural process. Thermal stability properties of an antifreeze protein from the desert beetle Microdera punctipennis. ... airborne moisture) (Henschel and Seely, 2008;Malik et al., 2014). This led to a so-called hybrid structure to mimic the Namib desert beetle, which utilizes its bumpy back with hydrophilic and hydrophobic patches to condense and collect water droplets. We also found superhydrophilic mesh more efficient than any other mesh samples with different wettability. Solar-driven interfacial evaporators are very promising for obtaining clean water, but suffer from serious performance degradation by salt-fouling, low evaporation rate under weak illumination and low clean water collection rate. A biomimetic surface for water collection was successfully engineered using three-dimensional (3D) printing technology. Some beetles (e.g., Stenocara) situated in the Namib Desert use fog as an alternative water source due to low rainfall [89,101]. Lyophobic membrane has the potential to separate immiscible liquids. However, when the scanning step size drops to 25 µm, the surface will form irregular rough structures that result in the isotropic flow characteristics. In recent years, anisotropic wetting surfaces have attracted wide scientific attention for both fundamental research and practical applications. Their wing surface consists of combined hydrophilic and hydrophobic bumps which allow them to coalesce small droplets into the bigger ones inside the fog to obtain drinking water. Moreover, the photocatalytic degradation properties of PDVB were utilized to prepare Janus fabric with asymmetric-wettability. The wing covers of the Namib desert beetle gather water from the air using nanoscale bumps. Bio-inspired cooling technologies focus on the fundamental mechanisms of heat transfer used by animals or plants which are considered as the keys to create a harmony between buildings and the nature, whereby IEQ can be enhanced while achieving energy efficiency. Therefore, this simple strategy to achieve controllable gradient wettability by adjusting the surface structure and chemical composition of the fabric shows great potential in the filtrating purification of oily sewage and the efficient condensed collection of water. You can request the full-text of this article directly from the authors on ResearchGate. It is revealed that a gradient wetting behavior from hydrophilicity (the Wenzel state) to hydrophobicity and further to superhydrophobicity (the Cassie-Baxter state) appears from the foot to apex of the wing. Nature-inspired fabrication of surfaces with special wettability or wetta-bility contrast is rapidly emerging as an area of intense research activity in materials research. The Namib Desert beetle photographed by University of Oxford researcher Andrew Parker, whose team first worked out in 2001 how the beetle captures water … Besides, many researchers have studied droplet motion in nature which they have become later inspiration for the design of new materials or structures [16], [17], [18], [19], [20]: for instance, Namib Desert beetles harvest droplets from the fog-laden by tilting their body towards the wind. This paper is structured according to building elements, in which technologies regarding HVAC system, building materials, opaque building envelope and transparent building envelope are reviewed. Here, we report experimental measurements of deposition efficiency of targets with identical surface chemistry but varying surface morphology. In nature, numerous biological surfaces, such as Nepenthes alata's peristome/Sarracenia trichome's trichome [37,38], lotus leaf [39], desert beetle's back, ... sharks, which present self-cleaning, anti-biofouling, hydrodynamic and drag reduction properties [5]. Superhydrophilic and superhydrophobic surfaces are prevalent in nature and have received tremendous attention due to its importance in both fundamental research and practical applications. In addition, the applications of desert beetle inspired wettability contrast surfaces for fog/water harvesting and other applications of surfaces with contrast wettability in the areas of microarrays, biomedical applications, and other emerging fields are reviewed in detail. On average, the fog harps collected about three times more water than the mesh netting. In arid yet foggy regions, fog harvesting is emerging as a promising approach to combat water scarcity. The higher surface roughness caused by the microsheets allows the as‐prepared materials to exhibit superlyophobicity. By designing next-generation fog harps to be anti-tangling, we expect that even larger performance multipliers will be possible compared to the current mesh harvesters. Then adhesion and deposition of water droplet were studied on the SSPS with the different wetting ability on the surface. Water condensation plays a major role in a wide range of industrial applications. Since heterogeneous nucleation initiates on a surface at a small scale, it is highly desirable to characterize water-surface interactions at the molecular level. It consists of a 2-d array of hydrophilic patches/spots on a macroscopically hydrophobic surface. (2005) Comparison of the setae between the dung beetle Copris ochus Motschulsky and the gecko Gecko gecko and the effects of deformation on their functions. Recently, focus is on the fabrication of wettability contrast surfaces that control properties and functionalities. ... Wherein, many organisms have evolved special surface wettability. Exists many conclusions which demonstrate that metaphors plays an important role shaping the design creativity. Complementary chemical analyzes by micro-Raman spectroscopy and attenuated total reflection Fourier-transform infrared spectroscopy provided in-depth information on the chemical and structural material modifications and material degradation imposed by the laser processing. The relationships between the flowing time and flowing distance were investigated and compared with theoretical results. Hierarchical micro/-nanostructures were produced on polycarbonate polymer surfaces by employing a two-step UV-laser processing strategy based on the combination of Direct Laser Interference Patterning (DLIP) of gratings and pillars on the microscale (3 ns, 266 nm, 2 kHz) and subsequently superimposing Laser-induced Periodic Surface Structures (LIPSS; 7-10 ps, 350 nm, 100 kHz) which adds nanoscale surface features. But their water-collecting tricks just might help engineers design surfaces that can stay free of ice and frost in colder places. Several flora and fauna species found in arid areas have adapted themselves to collect water by developing unique structures and to intake the collected moisture. Here, we report a strategy comprising solution exchange and lyophilization for integrating a lithium chloride hygroscopic agent, a nanofibrillated cellulose hydrophilic skeleton and a graphene solar absorber, to exploit a solar-powered nanostructured biopolymer hygroscopic aerogel (NBHA) for AWH. In this regards rigorous research has been conducted on finding best technique and their application method to mimic the nature so that superhydrophobic textile could be developed according to the demands of the da. Combining these two extreme states of superhydrophilicity and superhydrophobicity on the same surface precisely, wettable-nonwettable micropatterns possess unique functionalities, such as controllable superwetting, anisotropic wetting, oriented adhesion, and other properties. However, various potential plants and. We show that rational design of grooves enables flexible control of droplet-jumping velocity, direction, and size via tailoring of local pinning and Laplace pressure differences. A surface is said to be isotropic in wettability when contact angles measured in any direction is identical. In the optimal use-case scenario, 5wt% carbon black coated SiO2 could cycle through >10 adsorption-desorption phases per day to produce 0.47 gH2O/g desiccant/12 hours (2 L/m2) at 40% RH. The long-term shortage for freshwater resource has drawn increasingly research attention of water purification and collection. However, the development of a universal spontaneous transport platform for liquids remains a challenge. Water capture by a desert beetle. We show here that these large droplets form by virtue of the insect's bumpy surface, which consists of alternating hydrophobic, wax-coated and hydrophilic, non-waxy regions. Liquid water was successfully harvested outdoors in natural sunlight of 0.10–0.56 kW m⁻² using a facile device based on the NBHA. Here, we switch to cylindrical geometry in order to maintain a consistent pattern of bumps.4 Physosterna cribripes was reportedly misidentified in ref. We show that in this kind of system, there is not a relevant humidity sink, but the scale and the closeness of the different patches/spots affect the mechanisms which are important during the experiment. Superhydrophobic surface (SHS) possesses excellent water repellency, and the energy conversion based on SHS has opened up a new venue for efficient collecting and utilizing of water energy. These results may provide clues to obtain higher dew yields in arid or semi-arid regions as a way to obtain potable water. On the contrary, once a surface shows distinct contact angles in “specific” but not random directions, the surface is considered anisotropic wetting, accompanied by anisotropic droplet spreading (in a more wetting case) or anisotropic droplet movement (in a more anti-wetting case). In this work, we applied solar-light active photothermal nanomaterials (gold cubes and rods, carbon black) on SiO2 desiccant surfaces with the aim of providing localized heat sources, thereby rapidly increasing desiccant surface temperature, improving kinetics and totality of water vapor desorption, and allowing additional AWC cycles per day. In this paper, an overview of arid desert conditions and water collection from fog, and lessons from living nature for water collection are provided. Some beetles in the Namib Desert collect drinking water from fog-laden wind on their backs1. Drops of water collect on wax-free, water-repellant bumps on a beetle’s back, then slide toward the beetle’s mouth on the flat surface between the bumps. Additionally, these black MXene nanosheets can enhance the contrast of structural color. However, the multistep fabrication and limited option of materials have created major challenges for their practical application. Thermal and water relations of desert beetles. In this perspective, we first illustrate the sorption mechanism, including absorption and adsorption for moisture harvesting materials and summarize fundamental requirements as well as design principles of moisture harvesters. Well-known examples include dew harvesting by New- and Old World desert lizards(1−3)and fog-droplet collection by several beetle species in the Namib Desert. On the other hand, the superwicking surfaces show an anisotropic flow characteristic due to the parallel microgrooves structure. Fog harvesting of the Namib desert beetles has inspired many researchers to design artificial fog harvesting hybrid surfaces, which commonly involve flat hydrophilic patterns on hydrophobic surfaces. Nature 414, 33–34. This was used to cast waveform microstructures on a hydrophobic polymer surface, which was induced by using stacked filaments. Furthermore, the evaporators show high clean water collection rates of 21.92 kg m-2 d-1 (1 sun-9 h/0 sun-15 h + 5 V, indoor) and 9.65 kg m-2 d-1 (natural sun light + 5 V, outdoor). This review focuses on recently developed strategies for passively and directionally transporting LST liquids. 48. Controllable directional liquid transportation, as a promising and important form of intelligent liquid manipulation, plays important roles in lots of fields. ... Due to a heterogenous mix of hydrophilic (peaks) and superhydrophobic regions (valleys) (see Fig. Some beetles in the Namib Desert collect drinking water from fog-laden wind on their backs. The glochids are covered with cone-shaped barbs and have dense mats of hygroscopic trichomes at the base. Furthermore, the hydrophobic/hydrophilic patterned fabrics were prepared by using the lithographic masks with different apertures under UV light irradiation. The authors attempt to motivate the future research and development in energy efficient buildings. Results on the manipulation of the wetting properties of stainless steel alloy surface by ultrashort pulse laser texturing are presented. However, relatively less interest has been shown in the bumpy topography of the Namib desert beetle’s dorsal surface as well as its curved body shape when designing artificial hybrid surfaces. ... During this process, assisted by the Laplace pressure difference, contact angle hysteresis drives the drop motion directionally. In 2001, A. R. Parker et al. by Michael Keller As a result, the fabricated biomimetic surface exhibited the highest water-collecting performance (average 0.77 g for 10 min) compared with the other four different surfaces. This work directs the design and fabrication of surfaces with gradient wetting behavior by mimicking the nanopillars on cicada wing surface. 5/2020), Atmospheric Water Harvesting: A Review of Material and Structural Designs, Highly Efficient Fog Harvester of Electrospun Permanent Superhydrophobic-Hydrophilic Polymeric Nanocomposite Fiber Mats, Glochids microstructure and dew harvesting ability in Opuntia stricta (Cactaceae), Industrial applications of superhydrophobic coatings: Challenges and prospects, Film coating by directional droplet spreading on fibers, Anisotropy-induced directional self-transportation of low surface tension liquids: A review, Relationship and Interconversion Between Superhydrophilicity, Underwater Superoleophilicity, Underwater Superaerophilicity, Superhydrophobicity, Underwater Superoleophobicity, and Underwater Superaerophobicity: A Mini-Review, Fog-Harvesting Properties of Dryopteris marginata: Role of Interscalar Microchannels in Water-Channeling, IZMIR KATIP CELEBI UNIVERSITY GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES PINNING AND DEPINNING OF DROPLETS AROUND STEP, Laplace Pressure Driven Single-Droplet Jumping on Structured Surfaces, Energy Conversion Based on Superhydrophobic Surfaces, Implementing Superhydrophobic Surfaces within Various Condensation Environments: A Review, Harps under Heavy Fog Conditions: Superior to Meshes but Prone to Tangling, Atmosphere‐Mediated Scalable and Durable Biphilicity on Rationally Designed Structured Surfaces, Bamboo-joint-like platforms for fast, long-distance, directional, and spontaneous transport of fluids, Controlling the wettability of stainless steel from highly-hydrophilic to super-hydrophobic by femtosecond laser-induced ripples and nanospikes, Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surface for Fog Harvesting, Simple Fabrication of Water Harvesting Surfaces Using Three-Dimensional Printing Technology, Bioinspired wettable-nonwettable micropatterns for emerging applications, Sunlight-driven atmospheric water capture capacity is enhanced by nano-enabled photothermal desiccants, Bioinspired MXene-integrated colloidal crystal arrays for multichannel bioinformation coding, Designing Nature-Inspired Liquid-Repellent Surfaces, Polydopamine‐Mediated Superlyophobic Polysiloxane Coating of Porous Substrates for Efficient Separation of Immiscible Liquids, The role of advective fog in the water economy of certain Namib Desert animals, The Tenebrionidae of southern Africa. 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