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Liu X, Gao M, Li B, Liu R, Chong Z, Gu Z, Zhou K. Bioinspired Capillary Transistors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2310797. [PMID: 39139014 DOI: 10.1002/adma.202310797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 05/29/2024] [Indexed: 08/15/2024]
Abstract
Inspired by the unidirectional liquid spreading on Nepenthes peristome, Araucaria leaf, butterfly wings, etc., various microfluidic devices have been developed for water collection, irrigation, physical/chemical reaction, and oil-water separation. Despite extensive progress, most natural and artificial structures fail to enhance the Laplace pressure difference or capillary force, thus suffering from a low unidirectional capillary height (<30 mm). In this work, asymmetric re-entrant structures with long overhangs and connected forward/lateral microchannels are fabricated by 3D printing, resulting in a significantly increased unidirectional capillary height of 102.3 mm for water, which approximately corresponds to the theoretical limit. The overhangs can partially overlap the forward microchannels of the front structures without direct contact, thus enhancing the Laplace pressure difference and capillary force simultaneously. Based on asymmetric and symmetric re-entrant structures, capillary transistors are proposed and realized to programmably adjust the capillary direction, height, and width, which are envisioned to function as switches/valves and amplifiers/attenuators for highly efficient liquid patterning, desalination, and biochemical microreaction in 3D space.
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Affiliation(s)
- Xiaojiang Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
- HP-NTU Digital Manufacturing Corporate Lab, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ming Gao
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Boyuan Li
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ruoyu Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhejun Chong
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhongze Gu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Kun Zhou
- HP-NTU Digital Manufacturing Corporate Lab, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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Sun S, Zhang Y, Wu S, Wang L. In Situ Multi-Directional Liquid Manipulation Enabled by 3D Asymmetric Fang-Structured Surface. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2407034. [PMID: 39054932 DOI: 10.1002/adma.202407034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/01/2024] [Indexed: 07/27/2024]
Abstract
Decorating surfaces with wetting gradients or topological structures is a prevailing strategy to control uni-directional spreading without energy input. However, current methods, limited by fixed design, cannot achieve multi-directional control of liquids, posing challenges to practical applications. Here, a structured surface composed of arrayed three-dimensional asymmetric fang-structured units is reported that enable in situ control of customized multi-directional spreading for different surface tension liquids, exhibiting five novel modes. This is attributed to bottom-up distributed multi-curvature features of surface units, which create varied Laplace pressure gradients to guide the spreading of different-wettability liquids along specific directions. The surface's capability to respond to liquid properties for multimodal control leads to innovative functions that are absent in conventional structured surfaces. Selective multi-path circuits can be constructed by taking advantage of rich liquid behaviors with the surface; surface tensions of wetting liquids can be portably indicated with a resolution scope of 0.3-3.4 mN m-1 using the surface; temperature-mediated change of liquid properties is utilized to smartly manipulate liquid behavior and achieve the spatiotemporal-controllable targeted cooling of the surface at its heated state. These novel applications open new avenues for developing advanced surfaces for liquid manipulation.
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Affiliation(s)
- Siqi Sun
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Yiyuan Zhang
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Shuangmei Wu
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
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3
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Yang L, Li W, Lian J, Zhu H, Deng Q, Zhang Y, Li J, Yin X, Wang L. Selective directional liquid transport on shoot surfaces of Crassula muscosa. Science 2024; 384:1344-1349. [PMID: 38900891 DOI: 10.1126/science.adk4180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 05/13/2024] [Indexed: 06/22/2024]
Abstract
Directional liquid transport has been widely observed in various species including cacti, spiders, lizards, the pitcher plant Nepenthes alata, and Araucaria leaves. However, in all these examples the liquid transport for a specific liquid is completely restricted in a fixed direction. We demonstrate that Crassula muscosa shoot surfaces have the ability to transport a specific liquid unidirectionally in either direction. This is accomplished through the presence of asymmetric reentrant leaves with varying reentrant angles, which yields the variation in liquid meniscus heterogeneity. These findings enable engineered biomimetic structures capable of selective directional liquid transport, with functions such as intelligent flow direction switching, liquid distribution, and mixing.
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Affiliation(s)
- Ling Yang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Wei Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Jiaoyuan Lian
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, P. R. China
| | - Hengjia Zhu
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Qiyu Deng
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Yiyuan Zhang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Jiaqian Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
- School of Energy and Power Engineering, Shandong University, Jinan 250061, P. R. China
| | - Xiaobo Yin
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
- Department of Physics, The University of Hong Kong, Hong Kong SAR 999077, P. R. China
| | - Liqiu Wang
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, P. R. China
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, P. R. China
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4
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Zhang Y, Wu C, Jiao S, Gu H, Song Y, Liu Y, Cheng Z. Enhanced and controlled droplet ejection on magnetic responsive polydimethylsiloxane microarrays. J Colloid Interface Sci 2024; 662:563-571. [PMID: 38367574 DOI: 10.1016/j.jcis.2024.01.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/19/2024]
Abstract
Efficient removal of droplets from solid surfaces is significant in various fields, including fog collection and condensation heat transfer. However, droplets removal on common surfaces with static structures often occurs passively, which limits the possibility of increasing removal efficiency and lacks intelligent controllability. In this paper, an active strategy based on extrusion ejection is proposed and demonstrated on the magnetic responsive polydimethylsiloxane (PDMS) superhydrophobic microplates (MPSM). The MPSM can reversibly transit between the upright and tilted state as the external magnetic field is alternately applied and removed. Under the magnetic field, the direction and trajectories of droplets departure can be intelligently controlled, demonstrating excellent controllability. More importantly, compared with the static structure where the droplet must reach a certain size before departure, droplets can be ejected at smaller sizes as the MPSM is tilted. These advantages are of great significance in many fields, such as a highly efficient fog harvesting system. This strategy of extrusion ejection based on dynamic surface structure control reported in this work may provide fresh ideas for efficient droplet manipulation.
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Affiliation(s)
- Yang Zhang
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
| | - Chao Wu
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
| | - Shouzheng Jiao
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
| | - Haoyu Gu
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
| | - Yingbin Song
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
| | - Yuyan Liu
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
| | - Zhongjun Cheng
- State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
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Gao C, Zhang C, Liu S, Yu C, Jiang L, Dong Z. Pontederia crassipes inspired bottom overflow for fast and stable drainage. SOFT MATTER 2024; 20:2232-2242. [PMID: 37909256 DOI: 10.1039/d3sm01013a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Fast and stable water drainage is essential for living organisms, drainage plane construction, and protection of infrastructure from damage during rainfall. Unlike traditional anti-overflow drainage methods that rely on hydrophobic or sharped edges, this study demonstrates a bottom overflow-induced drainage model inspired by the water path employed by Pontederia crassipes leaves, leading to fast and stable drainage. A superhydrophilic bottom surface guides water to overflow and pin at the bottom of a thin sheet, resulting in dripping at a higher frequency and reduced water retention. This bottom drainage idea assists large-scale thin sheets to function as efficient and stable drainage surfaces in simulated rain environments. The flexible thin sheet can also be feasibly attached to dusty substrates to effectively remove dusty rainwater with slight dust residue. The bioinspired approach presented herein suggests a promising potential for efficient water drainage on outdoor functional photovoltaic surfaces, such as solar panels and radomes, thus ensuring effective energy conversion and stable signal transmission.
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Affiliation(s)
- Can Gao
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengqi Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Shijie Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cunlong Yu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Zhang K, Zhao Z, Liu G, Ran T, Cui X, Zhang Y, Wang Y, Gan Y, Liang J, Zhang L, Chen H. High-Efficient Microdroplet Harvesting and Detaching Inspired from Sarracenia Lid Trichome. ACS APPLIED MATERIALS & INTERFACES 2023; 15:59075-59086. [PMID: 38051973 DOI: 10.1021/acsami.3c14749] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Fog harvesting plays a pivotal role in harnessing atmospheric water resources and holds significant promise for alleviating global water scarcity. Nonetheless, enhancing harvesting efficiency remains a persistent challenge, especially concerning the rapid detachment of droplets from surfaces. In this study, we discovered that the trichomes of Sarracenia not only efficiently harvest and transport liquid but also quickly drain harvested liquid. We have elucidated the augmentation mechanism behind effective fog harvesting and drainage within the lid of Sarracenia. The trichomes facing the counterflow can enhance fog harvesting efficiency by 80% through air-flow-assisted spreading of liquid film. The wedge corner generated by the interface between hydrophilic and hydrophobic surfaces, coupled with the reduction of cross-sectional angles, diminishes the adhesive force of liquid droplets, fosters droplet spheroidization, and substantially facilitates droplet detachment. In addition, the quantitative detachment of droplets can be achieved by adjusting the cross-sectional angle and wetting gradient. This integrated structure combining efficient condensation and detachment has diverse applications in cooling towers and seawater desalination.
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Affiliation(s)
- Kaiteng Zhang
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Zehui Zhao
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Guang Liu
- College of Mechanical Engineering, Hebei University of Science & Technology, Hebei 050091, China
| | - Tong Ran
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Xianxian Cui
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Yi Zhang
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Yan Wang
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Yang Gan
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Jing Liang
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Liwen Zhang
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Huawei Chen
- School of Mechanical Engineering and Automation, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
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7
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Hou L, Liu X, Ge X, Hu R, Cui Z, Wang N, Zhao Y. Designing of anisotropic gradient surfaces for directional liquid transport: Fundamentals, construction, and applications. Innovation (N Y) 2023; 4:100508. [PMID: 37753526 PMCID: PMC10518492 DOI: 10.1016/j.xinn.2023.100508] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/01/2023] [Indexed: 09/28/2023] Open
Abstract
Many biological surfaces are capable of transporting liquids in a directional manner without energy consumption. Inspired by nature, constructing asymmetric gradient surfaces to achieve desired droplet transport, such as a liquid diode, brings an incredibly valuable and promising area of research with a wide range of applications. Enabled by advances in nanotechnology and manufacturing techniques, biomimetics has emerged as a promising avenue for engineering various types of anisotropic material system. Over the past few decades, this approach has yielded significant progress in both fundamental understanding and practical applications. Theoretical studies revealed that the heterogeneous composition and topography mainly govern the wetting mechanisms and dynamics behavior of droplets, including the interdisciplinary aspects of materials, chemistry, and physics. In this review, we provide a concise overview of various biological surfaces that exhibit anisotropic droplet transport. We discussed the theoretical foundations and mechanisms of droplet motion on designed surfaces and reviewed recent research advances in droplet directional transport on designed plane surfaces and Janus membranes. Such liquid-diode materials yield diverse promising applications, involving droplet collection, liquid separation and delivery, functional textiles, and biomedical applications. We also discuss the recent challenges and ongoing approaches to enhance the functionality and application performance of anisotropic materials.
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Affiliation(s)
- Lanlan Hou
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
- School of Printing and Packaging Engineer, Beijing Institute of Graphic Communication, Beijing 102600, China
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaofei Liu
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Xinran Ge
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Rongjun Hu
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Zhimin Cui
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Nü Wang
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Yong Zhao
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bioinspired Energy Materials and Devices, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
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Han X, Zhong L, Zhang L, Zhu L, Zhou M, Wang S, Yu D, Chen H, Hou Y, Zheng Y. Efficient Atmospheric Water Harvesting of Superhydrophilic Photothermic Nanocapsule. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303358. [PMID: 37488688 DOI: 10.1002/smll.202303358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/09/2023] [Indexed: 07/26/2023]
Abstract
Drought and water scarcity are two of the world's major problems. Solar-powered sorption-based atmospheric water harvesting technology is a promising solution in this category. The main challenge is to design materials with high water harvesting performance while achieving fast water vapor adsorption/desorption rates. Here, a superhydrophilic photothermic hollow nanocapsule (SPHN) is represented that achieves efficient atmospheric water harvesting in outdoor climates. In SPHN, the hollow mesoporous silica (HMS) is grafted with polypyrrole (PPy) and also loaded with lithium chloride (LiCl). The hollow structure is used to store water while preventing leakage. The hydrophilic spherical nanocapsule and the trapped water produce more free and weakly adsorbed water. Significantly lower the heat of desorption compared to pure LiCl solution. Such SPHN significantly improves the adsorption/desorption kinetics, e.g., absorbs 0.78-2.01 g of water per gram of SPHN at 25 °C, relative humidity (RH) 30-80% within 3 h. In particular, SPHN has excellent photothermal properties to achieve rapid water release under natural sunlight conditions, i.e., 80-90% of water is released in 1 h at 0.7-1.0 kW m-2 solar irradiation, and 50% of water is released even at solar irradiation as low as 0.4 kW m-2 . The water collection capacity can reach 1.2 g g-1 per cycle by using the self-made atmospheric water harvesting (AWH) device. This finding provides a way to design novel materials for efficient water harvesting tasks, e.g., water engineering, freshwater generator, etc.
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Affiliation(s)
- Xuefeng Han
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Lieshuang Zhong
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Lei Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Lingmei Zhu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Maolin Zhou
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Shaomin Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Dongdong Yu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Huan Chen
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Yongping Hou
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Yongmei Zheng
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
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Liu S, Zhang C, Shen T, Zhan Z, Peng J, Yu C, Jiang L, Dong Z. Efficient agricultural drip irrigation inspired by fig leaf morphology. Nat Commun 2023; 14:5934. [PMID: 37741843 PMCID: PMC10518012 DOI: 10.1038/s41467-023-41673-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 09/14/2023] [Indexed: 09/25/2023] Open
Abstract
Irrigation is limited by water scarcity. Here, we show how a drip irrigation system inspired by the leaf of the fig tree Ficus religiosa (also known as the bodhi tree) can improve irrigation efficiency. The reverse curvature of the leaf regulates the convergence process of multiple water streams, while its long-tail apex allows for fast water drainage with the droplet separation centroid beyond the leaf apex. We explain why drip frequency increases after the break-up of contact line pinning at the apex tip by using scaling laws for drip volume and analyzing drainage dynamics. We build a drip irrigation emitter inspired by the bodhi leaf apex and compare the germination efficiency of wheat, cotton, and maize under different irrigation modes. These results show that the proposed bodhi-leaf-apex-mimetic (BLAM) drip irrigation can improve water saving while ensuring germination and seedling growth.
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Affiliation(s)
- Shijie Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, 215123, Suzhou, Jiangsu, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Chengqi Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Tao Shen
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Zidong Zhan
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jia Peng
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Cunlong Yu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, 215123, Suzhou, Jiangsu, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China.
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10
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Yang Y, Liu D, Wang Q, Mahmood A, Lin M. Unveiling the Interactions between Water Molecule Clusters and Conical Structures via Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13028-13037. [PMID: 37671509 DOI: 10.1021/acs.langmuir.3c01228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Water scarcity presents a pressing global challenge, necessitating innovative solutions, such as the collection of water from the air using conical structures. However, current research primarily focuses on mist collection rather than on nanoscale clusters of water molecules. Under standard atmospheric conditions, water vapor predominantly exists as imperceptible clusters. Therefore, it is crucial to investigate the interactions between these water molecule clusters and conical structures, particularly regarding whether the conical shape induces Laplace pressure difference on the adhering cluster formations. To gain deeper insights and determine optimal droplet collection structures, we conducted molecular dynamics simulations to investigate interactions between water molecule clusters and conical structures. Our investigations focused on studying the interactions between conical structures and water molecule clusters with varying densities, as well as the impact of surface energies on the collection of water by these conical structures. Notably, our simulations unveiled the significant roles played by van der Waals forces and Laplace pressure in the process of collecting water molecule clusters. Furthermore, our simulations revealed that Janus conical structures, featuring two distinct surface energy regions, played a crucial role in promoting the aggregation of water molecules, resulting in the formation of larger droplets. This aggregation was driven by surface tension gradients, which arise from the contrasting wetting properties in different regions of the Janus structure. As a consequence, under the influence of gravitational forces, these larger droplets could eventually detach from the structure. Through the combined effects of surface tension gradients and gravitational forces, Janus conical structures offer a promising avenue for enhancing the collection efficiency of water from the air. Our research sheds light on the fundamental mechanisms governing water molecule cluster-based water collection and provides valuable insights for the design of more efficient and effective water collection systems.
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Affiliation(s)
- Yingying Yang
- College of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, China
| | - Dong Liu
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
- College of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, China
| | - Qiuyan Wang
- College of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, China
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China
| | - Awais Mahmood
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Meijia Lin
- College of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, China
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11
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Ji X, Shuai S, Liu S, Weng Y, Zheng F. Silicon-Based Superslippery/Superhydrophilic Striped Surface for Highly Efficient Fog Harvesting. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5423. [PMID: 37570127 PMCID: PMC10419386 DOI: 10.3390/ma16155423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Fog-harvesting performance is influenced by surface wettability, patterned structure and the heat transfer coefficient. In this work, we have prepared different surfaces with a stripe array of superhydrophilic, superslippery and superslippery/superhydrophilic surfaces for fog harvesting on silicon substrates using photolithography and silver-assisted chemical etching. The surface wettability and heat transfer coefficients of the above samples have been investigated. We analyzed the contact angle, sliding angle and transport state of droplets on these surfaces. The fog-harvesting rate of all samples under different voltages of the cooling pad (V = 0, 2.0, 2.5, 3.0, 3.5 V) was measured. Results showed that the superslippery/superhydrophilic striped surface could achieve rapid droplet nucleation, directional transport and efficient collection due to its superhydrophilic striated channels and the Laplace pressure difference between different wettability regions. At a condensation voltage of 3.5 V, the fog-harvesting rate efficiencies of the uniformly striped superhydrophilic and superslippery surface were 1351 mg·cm-2·h-1 and 1265 mg·cm-2·h-1, respectively, while the fog-harvesting rate of the superslippery/superhydrophilic striped surface was 1748 mg·cm-2·h-1. Compared with the original silicon surface, the maximum fog-harvesting rate of the superslippery/superhydrophilic striped surface was improved by 86.9%. This study offers significant insights into the impact of heat transfer and silicon surface wettability on the process of fog collection.
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Affiliation(s)
- Xiang Ji
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China; (X.J.)
| | - Shunxu Shuai
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China; (X.J.)
| | - Shuai Liu
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China; (X.J.)
| | - Yuyan Weng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China; (X.J.)
| | - Fengang Zheng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China; (X.J.)
- SJTU-Pinghu Institute of Intelligent Optoelectronics, Jiaxing 314200, China
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12
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Liu X, Li B, Gu Z, Zhou K. 4D Printing of Butterfly Scale-Inspired Structures for Wide-Angle Directional Liquid Transport. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207640. [PMID: 37078893 DOI: 10.1002/smll.202207640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Indexed: 05/03/2023]
Abstract
Unidirectional liquid transport has been extensively explored for water/fog harvesting, electrochemical sensing, and desalination. However, current research mainly focuses on linear liquid transport (transport angle α = 0°), which exhibits hindered lateral liquid spreading and low unidirectional transport efficiency. Inspired by the wide-angle (0° < α < 180°) liquid transport on butterfly wings, this work successfully achieves linear (α = 0°), wide-angle, and even ultra-wide-angle (α = 180°) liquid transport by four-dimensional (4D) printing of butterfly scale-inspired re-entrant structures. These asymmetric re-entrant structures can achieve unidirectional liquid transport, and their layout can control the Laplace pressure in the forward (structure-tilting) and lateral directions to adjust the transport angle. Specifically, high transport efficiency and programmable forward/lateral transport paths are simultaneously achieved by the ultra-wide-angle transport, where liquid fills the lateral path before being transported forward. Moreover, the ultra-wide-angle transport is also validated in 3D space, which provides an innovative platform for advanced biochemical microreaction, large-area evaporation, and self-propelled oil-water separation.
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Affiliation(s)
- Xiaojiang Liu
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- HP-NTU Digital Manufacturing Corporate Lab, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Boyuan Li
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Kun Zhou
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- HP-NTU Digital Manufacturing Corporate Lab, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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13
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Liu Z, Zhan Z, Shen T, Li N, Zhang C, Yu C, Li C, Si Y, Jiang L, Dong Z. Dual-bionic superwetting gears with liquid directional steering for oil-water separation. Nat Commun 2023; 14:4128. [PMID: 37438400 DOI: 10.1038/s41467-023-39851-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 06/30/2023] [Indexed: 07/14/2023] Open
Abstract
Developing an effective and sustainable method for separating and purifying oily wastewater is a significant challenge. Conventional separation membrane and sponge systems are limited in their long-term usage due to weak antifouling abilities and poor processing capacity for systems with multiple oils. In this study, we present a dual-bionic superwetting gears overflow system with liquid steering abilities, which enables the separation of oil-in-water emulsions into pure phases. This is achieved through the synergistic effect of surface superwettability and complementary topological structures. By applying the surface energy matching principle, water and oil in the mixture rapidly and continuously spread on preferential gear surfaces, forming distinct liquid films that repel each other. The topological structures of the gears facilitate the overflow and rapid transfer of the liquid films, resulting in a high separation flux with the assistance of rotational motion. Importantly, this separation model mitigates the decrease in separation flux caused by fouling and maintains a consistently high separation efficiency for multiple oils with varying densities and surface tensions.
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Affiliation(s)
- Zhuoxing Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Zidong Zhan
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Tao Shen
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, 100191, Beijing, China
| | - Ning Li
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Chengqi Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, 100191, Beijing, China
| | - Cunlong Yu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Chuxin Li
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, 215123, Jiangsu, China
| | - Yifan Si
- Department of Biomedical Engineering, City University of Hong Kong, 999077, Hong Kong SAR, China.
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
- School of Future Technology, University of Chinese Academy of Sciences, 100049, Beijing, China.
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14
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Zhou S, Jiang L, Dong Z. Overflow Control for Sustainable Development by Superwetting Surface with Biomimetic Structure. Chem Rev 2023; 123:2276-2310. [PMID: 35522923 DOI: 10.1021/acs.chemrev.1c00976] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Liquid flowing around a solid edge, i.e., overflow, is a commonly observed flow behavior. Recent research into surface wetting properties and microstructure-controlled overflow behavior has attracted much attention. Achieving controllable macroscale liquid dynamics by manipulating the micro-nanoscale liquid overflow has stimulated diverse scientific interest and fostered widespread use in practical applications. In this review, we outline the evolution of overflow and present a critical survey of the mechanism of surface wetting properties and microstructure-controlled liquid overflow in multilength scales ranging from centimeter to micro and even nanoscale. We summarize the latest progress in utilizing the mechanisms to manipulate liquid overflow and achieve macroscale liquid dynamics and in emerging applications to manipulate overflow for sustainable development in various fields, along with challenges and perspectives.
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Affiliation(s)
- Shan Zhou
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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15
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Xie D, Sun Y, Wu Y, Wang K, Wang G, Zang F, Ding G. Engineered Switchable-Wettability Surfaces for Multi-Path Directional Transportation of Droplets and Subaqueous Bubbles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208645. [PMID: 36423901 DOI: 10.1002/adma.202208645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/07/2022] [Indexed: 06/16/2023]
Abstract
Conventional engineered surfaces for fluid manipulation are hindered by the set wettability, and thus they can only achieve spontaneous transport of single-phase fluid, namely liquid or gas. Moreover, fluid transport systems that are robust to path defects have yet to be fully explored. Here, unprecedentedly, a universal wettability switching strategy is developed for achieving programmable directional transport of both droplets and subaqueous bubbles on a dumbbell-patterned functional surface (DPFS), featuring in strong robustness, high efficiency, and effective cost. By tuning the superwettability of DPFS through octadecyltrichlorosilane treatment and ultraviolet-C selective irradiation, the transport fluid can alternate between liquid and gas. The material's switchable superwettability regulates the fluid directed dynamics within the confined pattern, in which the sustaining fluid propelling relies on the surface energy difference between the starting and terminal sites. This enables the construction of multiple channels, which works synergistically with ultralow-volume-loss transport to impart the fluidic system with strong robustness against path defects. Underlying the completion of complex microfluidics tasks, spatially-selective cooling devices and subaqueous gas microreactors are successfully demonstrated. This energy-consumption-free fluid transport system opens a new avenue for on-chip programmable fluid manipulation, promoting innovative applications requiring rational control of two-phase fluid transport.
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Affiliation(s)
- Dongdong Xie
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yunna Sun
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yongjin Wu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kai Wang
- School of Internet of Things, Nanjing University of Posts and Telecommunications, No.9, Wenyuan Road, Nanjing, 210023, China
| | - Guilian Wang
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Faheng Zang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guifu Ding
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
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16
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Wang F, Wu Y, Nestler B. Wetting Effect on Patterned Substrates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210745. [PMID: 36779433 DOI: 10.1002/adma.202210745] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/01/2023] [Indexed: 05/10/2023]
Abstract
A droplet deposited on a solid substrate leads to the wetting phenomenon. A natural observation is the lotus effect, known for its superhydrophobicity. This special feature is engendered by the structured microstructure of the lotus leaf, namely, surface heterogeneity, as explained by the quintessential Cassie-Wenzel theory (CWT). In this work, recent designs of functional substrates are overviewed based on the CWT via manipulating the contact area between the liquid and the solid substrate as well as the intrinsic Young's contact angle. Moreover, the limitation of the CWT is discussed. When the droplet size is comparable to the surface heterogeneity, anisotropic wetting morphology often appears, which is beyond the scope of the Cassie-Wenzel work. In this case, several recent studies addressing the anisotropic wetting effect on chemically and mechanically patterned substrates are elucidated. Surface designs for anisotropic wetting morphologies are summarized with respect to the shape and the arrangement of the surface heterogeneity, the droplet volume, the deposition position of the droplet, as well as the mean curvature of the surface heterogeneity. A thermodynamic interpretation for the wetting effect and the corresponding open questions are presented at the end.
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Affiliation(s)
- Fei Wang
- Institute for Applied Materials - Microstructure Modelling and Simulation (IAM-MMS), Karlsruhe Institute of Technology (KIT), Strasse am Forum 7, 76131, Karlsruhe, Germany
| | - Yanchen Wu
- Institute for Applied Materials - Microstructure Modelling and Simulation (IAM-MMS), Karlsruhe Institute of Technology (KIT), Strasse am Forum 7, 76131, Karlsruhe, Germany
| | - Britta Nestler
- Institute for Applied Materials - Microstructure Modelling and Simulation (IAM-MMS), Karlsruhe Institute of Technology (KIT), Strasse am Forum 7, 76131, Karlsruhe, Germany
- Institute of Digital Materials Science, Karlsruhe University of Applied Sciences, Moltkestrasse 30, 76133, Karlsruhe, Germany
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17
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Ortega Del Rosario MDLÁ, Beermann K, Chen Austin M. Environmentally Responsive Materials for Building Envelopes: A Review on Manufacturing and Biomimicry-Based Approaches. Biomimetics (Basel) 2023; 8:biomimetics8010052. [PMID: 36810383 PMCID: PMC9944834 DOI: 10.3390/biomimetics8010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 01/28/2023] Open
Abstract
Buildings must adapt and respond dynamically to their environment to reduce their energy loads and mitigate environmental impacts. Several approaches have addressed responsive behavior in buildings, such as adaptive and biomimetic envelopes. However, biomimetic approaches lack sustainability consideration, as conducted in biomimicry approaches. This study provides a comprehensive review of biomimicry approaches to develop responsive envelopes, aiming to understand the connection between material selection and manufacturing. This review of the last five years of building construction and architecture-related studies consisted of a two-phase search query, including keywords that answered three research questions relating to the biomimicry and biomimetic-based building envelopes and their materials and manufacturing and excluding other non-related industrial sectors. The first phase focused on understanding biomimicry approaches implemented in building envelopes by reviewing the mechanisms, species, functions, strategies, materials, and morphology. The second concerned the case studies relating to biomimicry approaches and envelopes. Results highlighted that most of the existing responsive envelope characteristics are achievable with complex materials requiring manufacturing processes with no environmentally friendly techniques. Additive and controlled subtractive manufacturing processes may improve sustainability, but there is still some challenge to developing materials that fully adapt to large-scale and sustainability needs, leaving a significant gap in this field.
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Affiliation(s)
- Maria De Los Ángeles Ortega Del Rosario
- Faculty of Mechanical Engineering, Universidad Tecnológica de Panamá, Panama City 0819, Panama
- Sistema Nacional de Investigación (SNI), Clayton City of Knowledge Edf. 205, Panama City 0819, Panama
| | - Kimberly Beermann
- Geography Department, Birkbeck, University of London, London WC1E 6BT, UK
- International Association for Hydro-Environment Engineering and Research (IAHR), Panama Young Professionals Network (YPN), Panama City 0801, Panama
| | - Miguel Chen Austin
- Faculty of Mechanical Engineering, Universidad Tecnológica de Panamá, Panama City 0819, Panama
- Sistema Nacional de Investigación (SNI), Clayton City of Knowledge Edf. 205, Panama City 0819, Panama
- Centro de Estudios Multidisciplinarios en Ciencias, Ingeniería y Tecnología (CEMCIT-AIP), Panama City 0819, Panama
- Correspondence:
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18
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Balachandran A, Parayilkalapurackal H, Rajpoot S, Lone S. Bioinspired Green Fabricating Design of Multidimensional Surfaces for Atmospheric Water Harvesting. ACS APPLIED BIO MATERIALS 2023; 6:44-63. [PMID: 36580351 DOI: 10.1021/acsabm.2c00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Across the globe, the quest for clean water is escalating for both households as well as agricultural exigencies. With the industrial revolution and swift population growth, the contamination of natural water bodies has impacted the lives of more than two billion people around the world. A spectrum of water-saving solutions has been examined. Nonetheless, most of them are either energy-inefficient or limited to only a particular region. Thus, the pursuit of clean and potable drinking water is an assignment that invites collective discourse from scientists, policymakers, and innovators. In this connection, the presence of moisture in the atmosphere is considered one of the major sources of potential freshwater. Thus, fishing in atmospheric water is a mammoth opportunity. Atmospheric water harvesting (AWH) by some plants and animals in nature (particularly in deserts or arid regions) at low humidity serves as an inspiration for crafting state-of-the-art water harvesting structures and surfaces to buffer the menace of acute water scarcity. Though a lot of research articles and reviews have been reported on bioinspired structures with applications in water and energy harvesting, the area is still open for significant improvisation. This work will address the multidimensional-based AWH ability of natural surfaces or fabricated structures without the involvement of toxic chemicals. Moreover, the review will discuss the availability of clean technologies for emulating fascinating natural surfaces on an industrial scale. In the end, the current challenges and the future scope of bioinspired water harvesters will be discussed for pushing greener technologies to confront climate change.
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Affiliation(s)
- Akshay Balachandran
- Department of Chemistry, National Institute of Technology (NIT), Srinagar 190006, India.,iDREAM (Interdisciplinary Division for Renewable Energy & Advanced Materials), National Institute of Technology (NIT), Srinagar 190006, India
| | - Hariprasad Parayilkalapurackal
- iDREAM (Interdisciplinary Division for Renewable Energy & Advanced Materials), National Institute of Technology (NIT), Srinagar 190006, India.,Department of Physics, National Institute of Technology (NIT), Srinagar 190006, India
| | - Surbhi Rajpoot
- Department of Physics, National Institute of Technology (NIT), Srinagar 190006, India
| | - Saifullah Lone
- Department of Chemistry, National Institute of Technology (NIT), Srinagar 190006, India.,iDREAM (Interdisciplinary Division for Renewable Energy & Advanced Materials), National Institute of Technology (NIT), Srinagar 190006, India
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19
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He G, Zhang C, Dong Z. Survival in desert: Extreme water adaptations and bioinspired structural designs. iScience 2022; 26:105819. [PMID: 36636349 PMCID: PMC9830228 DOI: 10.1016/j.isci.2022.105819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Deserts are the driest places in the world, desert creatures have evolved special adaptations to survive in this extreme water shortage environment. The collection and transport of condensed water have been of particular interest regarding the potential transfer of the underlying mechanisms to technical applications. In this review, the mechanisms of water capture and transport were first summarized. Secondly, an introduction of four typical desert creatures including cactus, desert beetles, lizards, and snakes which have special adaptations to manage water was elaborated. Thirdly, the recent progress of biomimetic water-collecting structures including cactus, desert beetles, and lizards inspired designs and the influence of overflow on water collection was demonstrated. Finally, the conclusions were drawn, and future issues were pointed out. The present study will further promote research on bioinspired water management strategies.
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Affiliation(s)
- Guandi He
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengqi Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China,Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China,Corresponding author
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China,Corresponding author
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20
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Xie D, Zhang BY, Wang G, Sun Y, Wu C, Ding G. High-Performance Directional Water Transport Using a Two-Dimensional Periodic Janus Gradient Structure. SMALL METHODS 2022; 6:e2200812. [PMID: 36310112 DOI: 10.1002/smtd.202200812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/11/2022] [Indexed: 06/16/2023]
Abstract
Numerous materials in micro- or nanoscale hierarchical structures with surface gradients serve as the enablers in directional liquid transportation. However, concurrent high-speed and long-range liquid transport is yet to be fully realized so far. Here, an overall-improved approach is achieved in both water transport distance and velocity aspects using a 2D periodic Janus gradient structure, which is inspired by the Janus-wettable desert beetle back, tapered asymmetric cacti spine, and periodic Nepenthes alata microcavity. This 2D channel can efficiently regulate the kinetics of liquid transport within its confined structure, in which the terminal potential well and periodic Janus topological structure enable sustaining water propelling through a long distance. In addition, the rapidly formed aqueous film facilitates a high initial momentum and fast transport of liquid droplets along the channel, achieving an averaged velocity of over 400 mm s-1 and a maximum normalized transport distance of 23.4 for a 3 µL droplet, as well as an ultralow liquid volume loss of 6.02% upon high-flux water transport. This scalable, controllable, and easy-fabricable 2D water transport system provides an insightful pathway in realizing high-performance water manipulation and possibly facilitates substantial innovative applications in multidisciplinary fields.
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Affiliation(s)
- Dongdong Xie
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Bao Yue Zhang
- School of Engineering, STEM College, RMIT University, Melbourne, VIC, 3000, Australia
| | - Guilian Wang
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Yunna Sun
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chaofeng Wu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guifu Ding
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
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21
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Bioinspired Slippery Asymmetric Bumps of Candle Soot Coating for Condensation and Directional Transport of Water. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Tenjimbayashi M, Manabe K. A review on control of droplet motion based on wettability modulation: principles, design strategies, recent progress, and applications. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2022; 23:473-497. [PMID: 36105915 PMCID: PMC9467603 DOI: 10.1080/14686996.2022.2116293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/09/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
The transport of liquid droplets plays an essential role in various applications. Modulating the wettability of the material surface is crucial in transporting droplets without external energy, adhesion loss, or intense controllability requirements. Although several studies have investigated droplet manipulation, its design principles have not been categorized considering the mechanical perspective. This review categorizes liquid droplet transport strategies based on wettability modulation into those involving (i) application of driving force to a droplet on non-sticking surfaces, (ii) formation of gradient surface chemistry/structure, and (iii) formation of anisotropic surface chemistry/structure. Accordingly, reported biological and artificial examples, cutting-edge applications, and future perspectives are summarized.
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Affiliation(s)
- Mizuki Tenjimbayashi
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan
| | - Kengo Manabe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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23
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Liu Z, Peng J, Yu C, Dong Z. Introduction to the biomimetic design of interfacial materials for water overflow control. Chem Commun (Camb) 2022; 58:9051-9059. [PMID: 35880658 DOI: 10.1039/d2cc03224d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The overflow behavior of liquid at a curved surface or a surface border is a common phenomenon in many circumstances of daily life and industry. Accurate control of overflow is beneficial for improving the convenience of our daily life and efficiency of production, thus has great importance not only for enhancing existing applications but for creating new products. The effect of surface wettability on overflow has not been paid enough attention in the past, however, as the development of construction techniques, especially 3D printing, of superwettable surfaces and the understanding of the dynamic interfacial wetting properties, the potential of surface wettability and structure on the overflow control has gained great recognition in the recent decade. On this basis, the feature article will outline the understanding evolution of the overflow phenomenon, and summarise the current research on the control of overflow behavior from aspects including the bioinspired idea, the fabrication of superwettable surfaces, the development of control techniques, the exploration of control mechanisms, etc., and provide an outlook for the accurate control of overflow by surfactant and additives, along with challenges and perspectives.
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Affiliation(s)
- Zhuoxing Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Future Technology College, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jia Peng
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Future Technology College, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Cunlong Yu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Future Technology College, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Future Technology College, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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Xu P, Zhang Y, Li L, Lin Z, Zhu B, Chen W, Li G, Liu H, Xiao K, Xiong Y, Yang S, Lei Y, Xue L. Adhesion behaviors of water droplets on bioinspired superhydrophobic surfaces. BIOINSPIRATION & BIOMIMETICS 2022; 17:041003. [PMID: 35561670 DOI: 10.1088/1748-3190/ac6fa5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
The adhesion behaviors of droplets on surfaces are attracting increasing attention due to their various applications. Many bioinspired superhydrophobic surfaces with different adhesion states have been constructed in order to mimic the functions of natural surfaces such as a lotus leaf, a rose petal, butterfly wings, etc. In this review, we first present a brief introduction to the fundamental theories of the adhesion behaviors of droplets on various surfaces, including low adhesion, high adhesion and anisotropic adhesion states. Then, different techniques to characterize droplet adhesion on these surfaces, including the rotating disk technique, the atomic force microscope cantilever technique, and capillary sensor-based techniques, are described. Wetting behaviors, and the switching between different adhesion states on bioinspired surfaces, are also summarized and discussed. Subsequently, the diverse applications of bioinspired surfaces, including water collection, liquid transport, drag reduction, and oil/water separation, are discussed. Finally, the challenges of using liquid adhesion behaviors on various surfaces, and future applications of these surfaces, are discussed.
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Affiliation(s)
- Peng Xu
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Yurong Zhang
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Lijun Li
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Zhen Lin
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Bo Zhu
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Wenhui Chen
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Gang Li
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Hongtao Liu
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Kangjian Xiao
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Yunhe Xiong
- Urology Department, Renmin Hospital of Wuhan University, Zhangzhidong Road 99, 430060, Wuhan, Hubei Province, People's Republic of China
| | - Sixing Yang
- Urology Department, Renmin Hospital of Wuhan University, Zhangzhidong Road 99, 430060, Wuhan, Hubei Province, People's Republic of China
| | - Yifeng Lei
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
| | - Longjian Xue
- School of Power and Mechanical Engineering, The Institute of Technological Science, Wuhan University, South Donghu Road 8, 430072, Wuhan, Hubei Province, People's Republic of China
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25
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Majhy B, Sen A. Autonomous droplet transport on a chemically homogenous superhydrophilic surface. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Conroy G, Plackett B. Leading lights in strongest science nations make their mark. Nature 2022; 603:S16-S19. [PMID: 35264750 DOI: 10.1038/d41586-022-00572-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Three-Dimensional Graphene with Preserved Channeling as a Binder Additive for Zeolite 13X for Enhanced Thermal Conductivity, Vapor Transport, and Vapor Adsorption Loading Kinetics. Catalysts 2022. [DOI: 10.3390/catal12030292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Atmospheric water vapor extraction through adsorption to highly porous materials holds promise for its incorporation into broader technologies, including potable water generation. These technologies require breakthroughs in synthesis and design. Here, we demonstrate a composite of zeolite 13X sorbent for high adsorption capacity infiltrated with a light-weight three-dimensional graphene binder, which effectively networks a substrate structure into the sorbent. The composites described maintained fidelity when passing through the pore structure. This was accomplished by the utilization of a sacrificial polymer for safeguarding channel networking during sorbent infiltration of the binder for the extension of substrate networking. The performance measures for adsorbate loadings and thermal flux are evaluated with additional measurements taken for considering compactions of sorbent/substrates. Graphene/Zeolite 13X with preserved channeling demonstrated specific heat flux at 7664 W/kg, while samples without preserved channeling measured 4206 W/kg. A 0.6 g/cm3 compaction resulted in a 412% and a 368% improvement in mass transport while compaction at 1.2 g/cm3 resulted in a 333% and a 290% improvement in mass transport.
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28
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Lu H, Shi W, Guo Y, Guan W, Lei C, Yu G. Materials Engineering for Atmospheric Water Harvesting: Progress and Perspectives. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110079. [PMID: 35122451 DOI: 10.1002/adma.202110079] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Atmospheric water harvesting (AWH) is emerging as a promising strategy to produce fresh water from abundant airborne moisture to overcome the global clean water shortage. The ubiquitous moisture resources allow AWH to be free from geographical restrictions and potentially realize decentralized applications, making it a vital parallel or supplementary freshwater production approach to liquid water resource-based technologies. Recent advances in regulating chemical properties and micro/nanostructures of moisture-harvesting materials have demonstrated new possibilities to promote enhanced device performance and new understandings. This perspective aims to provide a timely overview on the state-of-the-art materials design and how they serve as the active components in AWH. First, the key processes of AWH, including vapor condensation, droplet nucleation, growth, and departure are outlined, and the desired material properties based on the fundamental mechanisms are discussed. Then, how tailoring materials-water interactions at the molecular level play a vital role in realizing high water uptake and low energy consumption is shown. Last, the challenges and outlook on further improving AWH from material designs and system engineering aspects are highlighted.
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Affiliation(s)
- Hengyi Lu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Wen Shi
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Youhong Guo
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Weixin Guan
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Chuxin Lei
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Guihua Yu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
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29
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Wang Y, Zhao W, Han M, Guan L, Han L, Hemraj A, Tam KC. Sustainable Superhydrophobic Surface with Tunable Nanoscale Hydrophilicity for Water Harvesting Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi Wang
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
| | - Weinan Zhao
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
| | - Mei Han
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
| | - Lu Guan
- State Key Laboratory of Heavy Oil Processing Institute of New Energy College of Chemical Engineering China University of Petroleum (East China) Qingdao 266580 China
| | - Lian Han
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
| | - Afraz Hemraj
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
| | - Kam Chiu Tam
- Department of Chemical Engineering Waterloo Institute for Nanotechnology University of Waterloo 200 University Avenue West Waterloo Ontario, N2L 3G1 Canada
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30
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Park H, Haechler I, Schnoering G, Ponte MD, Schutzius TM, Poulikakos D. Enhanced Atmospheric Water Harvesting with Sunlight-Activated Sorption Ratcheting. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2237-2245. [PMID: 34974699 DOI: 10.1021/acsami.1c18852] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The global challenge of clean water scarcity needs to be confronted with novel sustainable, climate neutral solutions, over the entire spectrum of possible clean water availability. Atmospheric moisture represents a major untapped resource that can be harvested by sorbents, enabling water production in dry inland regions where it is needed. While benefiting from the utilization of an important renewable energy source, solar-driven, sorbent-based atmospheric water harvesting systems are inseparably based on a single water harvesting cycle per day, which severely limits the daily water productivity and the competitiveness of this very promising technology. Here, we rationally design an atmospheric water harvesting strategy, using durable hydrogel sorbents, that operates with sorption "ratcheting"─a large sequence of rapid adsorption and subsequent desorption steps─activated by direct sunlight. Employing theoretical considerations, we tailor the ratcheting timescales to the inherent sorption properties of the hydrogels, optimally exploiting their natural harvesting capabilities, while maintaining the sustainable utility of the daily cycle. Amplified by the favorable sorption properties and ratcheting stability of the sorbent, this strategy demonstrates an impressive ∼80% increase in water harvesting yield over the daily cycle systems. The generic nature of the ratcheting concept shows great potential to advance the water harvesting capabilities of a range of related systems.
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Affiliation(s)
- Hyunchul Park
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Iwan Haechler
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Gabriel Schnoering
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Marco D Ponte
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Thomas M Schutzius
- Laboratory for Multiphase Thermofluidics and Surface Nanoengineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
- Energy Science Center, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
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31
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Wang Y, Zhao W, Han M, Guan L, Han L, Hemraj A, Tam KC. Sustainable Superhydrophobic Surface with Tunable Nanoscale Hydrophilicity for Water Harvesting. Angew Chem Int Ed Engl 2021; 61:e202115238. [PMID: 34936181 DOI: 10.1002/anie.202115238] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Indexed: 11/07/2022]
Abstract
Fog collection can be a sustainable solution to water scarcity in many regions around the world. Recently, great efforts have been undertaken to develop low-cost and highly efficient water collectors to address water shortages, especially in arid regions. However, the design of a scalable water harvesting surface remains elusive to the trade-off between water deposition and transport. Herein, we developed a hydrophilic/superhydrophobic surface using a "one-pot" facile approach to enable an efficient water deposition and transport process. Preferential exposure of hydrophilic cellulose nanocrystal outer surface could be used to accelerate droplet deposition, coupled with wax microspheres with distinct wetting features for the manipulation of the droplet mobility. Appropriate tuning of the wetting characteristics of the surfaces, optimizing the hydrophobicity and density of the water affinity nanodomains allowed us to enhance the water deposition rate without the sacrifice of water transport. An optimal hydrophilic/superhydrophobic topography through the control of nanoscale hydrophilic and hydrophobic domains yielded a water harvesting flux of 3.402 L/m 2 /h for a plate and 5.02 L/m 2 /h for a mesh. This strategy of decorating a superhydrophobic surface with moderately hydrophilic nanodomains allows the manipulation of droplet nucleation and removal to enhance the water collection efficiency.
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Affiliation(s)
- Yi Wang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Weinan Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Mei Han
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Lu Guan
- State Key Laboratory of Heavy Oil Processing, Institute of New Energy, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, China
| | - Lian Han
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Afraz Hemraj
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Kam Chiu Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
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32
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Han X, Tang X, Zhao H, Li W, Li J, Wang L. Spatio-temporal maneuvering of impacting drops. MATERIALS HORIZONS 2021; 8:3133-3140. [PMID: 34570140 DOI: 10.1039/d1mh00836f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Controlling impacting drops on nonwetting surfaces is desired in multifarious processes. Efforts have been made to solely spatially control the drop movement after the impact or solely temporally reduce liquid-solid contact via surface design. We present a fin-stripe nonwetting surface that enables spatial offset maximization and temporal contact minimization simultaneously, just via structure design without the need for external energies. The wetting stripe provides a large wettability gradient for lateral movement, while the macroscale nonwetting fin restricts the drop movement direction and confines drop spreading for contact time reduction. The fin-stripe surface can decrease the contact time by roughly 30% and provide a normalized lateral distance of roughly 20, an order of magnitude larger than the reported values. Our surface enables effective spatio-temporal maneuvering of impacting drops, essential for various applications that involve liquid transport.
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Affiliation(s)
- Xing Han
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
| | - Xin Tang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
| | - Haibo Zhao
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
- Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, 518055 Shenzhen, Guangdong, China
| | - Wei Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
| | - Jiaqian Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong.
- Zhejiang Institute of Research and Innovation, The University of Hong Kong, 311300 Hangzhou, Zhejiang, China
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33
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Nioras D, Ellinas K, Constantoudis V, Gogolides E. How Different Are Fog Collection and Dew Water Harvesting on Surfaces with Different Wetting Behaviors? ACS APPLIED MATERIALS & INTERFACES 2021; 13:48322-48332. [PMID: 34590815 DOI: 10.1021/acsami.1c16609] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As the clean water shortage becomes a serious problem for mankind, atmospheric water harvesting has emerged as a viable solution. Two main approaches to collect water from the atmosphere exist: the first is to capture it from fog, whereas the second is through condensation of vapor on surfaces with a temperature below the dew point. The water collection mechanism in these two modes is completely different. In this work, we develop a deeper understanding of the effect of surface wettability on gravity-assisted atmospheric water harvesting and a comparative study of the two collection modes (fog and dew). First, we present theoretical estimates for the maximum water mass available in each mode and introduce an efficiency factor η which enables the direct comparison among surfaces in different setups and modes. Then we fabricate a series of micronanostructured surfaces with different surface wetting properties from hydrophilic to superhydrophobic. Our results demonstrate that drop mobility, derived from the surface superhydrophobic properties and micronanotopography, is the most important factor affecting fog collection: superhydrophobic surfaces show 40-65% higher fog collection rates compared to flat hydrophilic surfaces, with the more mobile among superhydrophobic surfaces (hysteresis 2°, and air-liquid fraction fA-L > 0.9) showing higher water collection. On the other hand, dew harvesting efficiency depends on the combination of drop mobility and nucleation rate, with superhydrophobic surfaces exhibiting 40% higher water collection rate compared to the flat hydrophilic or hydrophobic surfaces due to their low hysteresis as well as high surface area available for nucleation.
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Affiliation(s)
- Dimitrios Nioras
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, Greece 15341
- Physics Department, National Technical University of Athens, Zografou Campus, Athens, Greece 15780
| | - Kosmas Ellinas
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, Greece 15341
| | - Vassilios Constantoudis
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, Greece 15341
| | - Evangelos Gogolides
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, Greece 15341
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34
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Wang Q, He Y, Geng X, Hou Y, Zheng Y. Enhanced Fog Harvesting through Capillary-Assisted Rapid Transport of Droplet Confined in the Given Microchannel. ACS APPLIED MATERIALS & INTERFACES 2021; 13:48292-48300. [PMID: 34607429 DOI: 10.1021/acsami.1c14696] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A novel integrated bioinspired surface is fabricated by using an innovative capillarity-induced selective oxidation method, to achieve the combination of the fog-collecting characteristics of a variety of creatures, i.e., the micronanostructures of spider silk, the wettable patterns of desert beetle, the conical structure of cactus spine, and the hierarchical microchannel of Sarracenia trichome. The fog is captured effectively via multistructures on the cone tips, and captured droplet is collected and confined in the microchannel to realize rapid transport via the formation of wettable pattern on the surface and the introduction of wettable gradient in the microchannel. Consequently, the fog harvest efficiency reaches 2.48 g/h, increasing to nearly 320% compared to the normal surface. More interestingly, similar to Sarracenia trichome, the surface also presents two transport modes, namely, Mode I (water transport along dry microchannel) and Mode II (succeeding water slippage on the water film). In Mode II, the velocity of 34.10 mm/s is about three times faster than that on the Sarracenia trichome. Such a design of integrated bioinspired surface may present potential applications in high-efficiency water collection systems, microfluidic devices, and others.
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Affiliation(s)
- Qianqian Wang
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University (BUAA), Beijing 100191, P. R. China
| | - Yi He
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University (BUAA), Beijing 100191, P. R. China
| | - Xinxin Geng
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University (BUAA), Beijing 100191, P. R. China
| | - Yongping Hou
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University (BUAA), Beijing 100191, P. R. China
| | - Yongmei Zheng
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University (BUAA), Beijing 100191, P. R. China
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35
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Aerodynamics-assisted, efficient and scalable kirigami fog collectors. Nat Commun 2021; 12:5484. [PMID: 34531392 PMCID: PMC8445985 DOI: 10.1038/s41467-021-25764-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 08/13/2021] [Indexed: 11/29/2022] Open
Abstract
To address the global water shortage crisis, one of the promising solutions is to collect freshwater from the environmental resources such as fog. However, the efficiency of conventional fog collectors remains low due to the viscous drag of fog-laden wind deflected around the collecting surface. Here, we show that the three-dimensional and centimetric kirigami structures can control the wind flow, forming quasi-stable counter-rotating vortices. The vortices regulate the trajectories of incoming fog clusters and eject extensive droplets to the substrate. As the characteristic structural length is increased to the size of vortices, we greatly reduce the dependence of fog collection on the structural delicacy. Together with gravity-directed gathering by the folds, the kirigami fog collector yields a collection efficiency of 16.1% at a low wind speed of 0.8 m/s and is robust against surface characteristics. The collection efficiency is maintained even on a 1 m2 collector in an outdoor setting. Water shortage not only occurs in arid regions, but also in humid area with little precipitation, despite abundant fog. Authors develop robust and scalable 3D centimetric kirigami structures to control wind flow and regulate the trajectories of incoming fog, yielding high fog collection efficiency.
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36
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Soltani M, Golovin K. Anisotropy-induced directional self-transportation of low surface tension liquids: a review. RSC Adv 2020; 10:40569-40581. [PMID: 35520851 PMCID: PMC9057580 DOI: 10.1039/d0ra08627d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/02/2020] [Indexed: 11/29/2022] Open
Abstract
Inspired by natural surfaces such as butterfly wings, cactus leaves, or the Nepenthes alata plant, synthetic materials may be engineered to directionally transport liquids on their surface without external energy input. This advantageous feature has been adopted for various mechanical and chemical processes, e.g. fog harvesting, lubrication, lossless chemical reactions, etc. Many studies have focused on the manipulation and transport of water or aqueous droplets, but significantly fewer have extended their work to low surface tension (LST) liquids, although these fluids are involved in numerous industrial and everyday processes. LST liquids completely wet most surfaces which makes spontaneous transportation an active challenge. This review focuses on recently developed strategies for passively and directionally transporting LST liquids.
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Affiliation(s)
- Mohammad Soltani
- Okanagan Polymer Engineering Research & Applications Laboratory, Faculty of Applied Science, University of British Columbia Canada
| | - Kevin Golovin
- Okanagan Polymer Engineering Research & Applications Laboratory, Faculty of Applied Science, University of British Columbia Canada
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