51
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Yan S, Li W, Bi H, Wang M, Sun D, Wei Q, Wang S, Wang Z, Zhang M. Wettability control of conjugated polymer films by electric-field polarization technique. Chem Commun (Camb) 2019; 55:3274-3277. [DOI: 10.1039/c8cc09363f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The wettability of conjugated polymer poly(3-hexylthiophene) (P3HT) films was accurately controlled by an electric field polarization technique, and transition of the films from being hydrophobic to hydrophilic was successfully achieved.
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Affiliation(s)
- Su Yan
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - Wei Li
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
| | - Huan Bi
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - Mian Wang
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - De Sun
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
| | - Qi Wei
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - Shiwei Wang
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - Zhe Wang
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
- Advanced Institute of Materials Science
| | - Mingyao Zhang
- School of Chemical Engineering
- Changchun University of Technology
- Changchun
- P. R. China
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52
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Wang L, Tao D, Dong S, Li S, Tian Y. Contributions of lunate cells and wax crystals to the surface anisotropy of Nepenthes slippery zone. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180766. [PMID: 30839679 PMCID: PMC6170553 DOI: 10.1098/rsos.180766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/03/2018] [Indexed: 05/27/2023]
Abstract
Nepenthes slippery zone presents surface anisotropy depending on its specialized structures. Herein, via macro-micro-nano scaled experiments, we analysed the contributions of lunate cells and wax crystals to this anisotropy. Macroscopic climbing of insects showed large displacements (triple body length within 3 s) and high velocities (6.16-20.47 mm s-1) in the inverted-fixed (towards digestive zone) slippery zone, but failed to climb forward in the normal-fixed (towards peristome) one. Friction force of insect claws sliding across inverted-fixed lunate cells was about 2.4 times of that sliding across the normal-fixed ones, whereas showed unobvious differences (1.06-1.11 times) between the inverted- and normal-fixed wax crystals. Innovative results from atomic force microscope scanning and microstructure examination demonstrated the upper layer of wax crystals causes the cantilever tip to generate rather small differences in friction data (1.92-2.72%), and the beneath layer provides slightly higher differences (4.96-7.91%). The study confirms the anisotropic configuration of lunate cells produces most of the anisotropy, whereas both surface topography and structural features of the wax crystals generate a slight contribution. These results are helpful for understanding the surface anisotropy of Nepenthes slippery zone, and guide the design of bioinspired surface with anisotropic properties.
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Affiliation(s)
- Lixin Wang
- School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, People's Republic of China
| | - Dashuai Tao
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People's Republic of China
| | - Shiyun Dong
- National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, People's Republic of China
| | - Shanshan Li
- School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, People's Republic of China
| | - Yu Tian
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People's Republic of China
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53
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Miao D, Huang Z, Wang X, Yu J, Ding B. Continuous, Spontaneous, and Directional Water Transport in the Trilayered Fibrous Membranes for Functional Moisture Wicking Textiles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801527. [PMID: 30004631 DOI: 10.1002/smll.201801527] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/30/2018] [Indexed: 06/08/2023]
Abstract
Directional water transport is a predominant part of functional textiles used for continuous sweat release in daily life. However, it has remained a great challenge to design such textiles which ensure continuous directional water transport and superior prevention of water penetration in the reverse direction. Here, a scalable strategy is reported to create trilayered fibrous membranes with progressive wettability by introducing a transfer layer, which can guide the directional water transport continuously and spontaneously, thus preventing the skin from being rewetted. The resulting trilayered fibrous membranes exhibit a high one-way transport index R (1021%) and a desired breakthrough pressure (16.1 cm H2 O) in the reverse direction, indicating an ultrahigh directional water transport capacity. Moreover, on the basis of water transport behavior, a plausible mechanism is proposed to provide insight into the integrative and cooperative driving forces at the interfaces of trilayered hydrophobic/transfer/superhydrophilic fibrous membranes. The successful synthesis of such fascinating materials would be valuable for the design of functional textiles with directional water transport properties for personal drying applications.
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Affiliation(s)
- Dongyang Miao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Zhan Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xianfeng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
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54
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He W, Liu P, Zhang J, Yao X. Emerging Applications of Bioinspired Slippery Surfaces in Biomedical Fields. Chemistry 2018; 24:14864-14877. [DOI: 10.1002/chem.201801368] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/24/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Wenqing He
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Peng Liu
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Jianqiang Zhang
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Xi Yao
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
- City University of Hong Kong Shenzhen Research Institute; Shenzhen 518075 P.R. China
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55
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Zhu H, Duan R, Wang X, Yang J, Wang J, Huang Y, Xia F. Prewetting dichloromethane induced aqueous solution adhered on Cassie superhydrophobic substrates to fabricate efficient fog-harvesting materials inspired by Namib Desert beetles and mussels. NANOSCALE 2018; 10:13045-13054. [PMID: 29952391 DOI: 10.1039/c8nr03277g] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Namib Desert beetles harvest water from harsh environments by using their hydrophilic-hydrophobic dorsal surfaces. Generally, Cassie-state superhydrophobic materials are chosen as substrates to prepare bioinspired (super)hydrophilic/(super)hydrophobic patterned surfaces. However, due to the low adhesion and strong repellency, aqueous solution cannot be directly set on Cassie superhydrophobic materials until the dropping volume is larger than 6.5 μL. Therefore, arranging a (super)hydrophilic substance on Cassie superhydrophobic substrates to construct (super)hydrophilic/superhydrophobic patterned surfaces still remains a challenge. In this work, by prewetting with dichloromethane (DCM), the mussel-inspired hydrophilic and bio-adhesive dopamine solution (DA) could be dripped onto a Cassie superhydrophobic Cu surface with an ultralow volume of 0.1 μL, whereby low surface tension DCM would "cloak" the high surface tension DA. Along with DCM volatility, DA was adhered on the Cassie superhydrophobic surface and would then self-polymerize into hydrophilic polydopamine domains, thus hydrophilic/superhydrophobic patterned surfaces with efficient water collection could be successfully developed inspired by Namib Desert beetles and mussels. The bioinspired materials show the potential for real-world industrialization in a large scale, which is of great significance for providing living security for those living in areas with no access to fresh water.
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Affiliation(s)
- Hai Zhu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China.
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56
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Tenjimbayashi M, Park JY, Muto J, Kobayashi Y, Yoshikawa R, Monnai Y, Shiratori S. In Situ Formation of Slippery-Liquid-Infused Nanofibrous Surface for a Transparent Antifouling Endoscope Lens. ACS Biomater Sci Eng 2018; 4:1871-1879. [PMID: 33445342 DOI: 10.1021/acsbiomaterials.8b00134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Slippery-liquid-infused porous surfaces (SLIPS) are state-of-the-art materials owing to their excellent properties derived from their fluidity (e.g., dynamic omniphobicity and self-healing function). Although SLIPS have been multifunctionalized and developed for various applications, the fabrication process is not well advanced because it is time-consuming and requires multiple steps. Here, a versatile method is reported for the instant formation of slippery surfaces in situ. A lubricated fiber-filled porous sheet was designed, and a coating was formed simply by sticking a surface to the sheet. This sheet can be used as a "disposable instant coating kit" and be made available for instant and repeated coating of SLIPS. The technique is applied to a transparent antifouling endoscope lens as a proof-of-concept. This work improves the fabrication process of SLIPS and contributes to the practical use of SLIPS.
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Affiliation(s)
- Mizuki Tenjimbayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Jun-Yong Park
- Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Jun Muto
- Department of Neurosurgical Surgery, School of Medicine, Keio University, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yuta Kobayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Ryohei Yoshikawa
- Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Yasuaki Monnai
- Center for Applied Physics and Physico-Informatics, School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Seimei Shiratori
- Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan.,Center for Applied Physics and Physico-Informatics, School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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57
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Su X, Li H, Lai X, Chen Z, Zeng X. Highly Stretchable and Conductive Superhydrophobic Coating for Flexible Electronics. ACS APPLIED MATERIALS & INTERFACES 2018; 10:10587-10597. [PMID: 29508997 DOI: 10.1021/acsami.8b01382] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Superhydrophobic materials integrating stretchability with conductivity have huge potential in the emerging application horizons such as wearable electronic sensors, flexible power storage apparatus, and corrosion-resistant circuits. Herein, a facile spraying method is reported to fabricate a durable superhydrophobic coating with excellent stretchable and electrical performance by combing 1-octadecanethiol-modified silver nanoparticles (M-AgNPs) with polystyrene- b-poly(ethylene- co-butylene)- b-polystyrene (SEBS) on a prestretched natural rubber (NR) substrate. The embedding of M-AgNPs in elastic SEBS matrix and relaxation of prestretched NR substrate construct hierarchical rough architecture and endow the coating with dense charge-transport pathways. The fabricated coating exhibits superhydrophobicity with water contact angle larger than 160° and a high conductivity with resistance of about 10 Ω. The coating not only maintains superhydrophobicity at low/high stretch ratio for the newly generated small/large protuberances but also responds to stretching and bending with good sensitivity, broad sensing range, and stable response cycles. Moreover, the coating exhibits excellent durability to heat and strong acid/alkali and mechanical forces including droplet impact, kneading, torsion, and repetitive stretching-relaxation. The findings conceivably stand out as a new tool to fabricate multifunctional superhydrophobic materials with excellent stretchability and conductivity for flexible electronics under wet or corrosive environments.
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Affiliation(s)
- Xiaojing Su
- College of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Hongqiang Li
- College of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Key Lab of Guangdong Province for High Property and Functional Polymer Materials , Guangzhou 510640 , China
| | - Xuejun Lai
- College of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Key Lab of Guangdong Province for High Property and Functional Polymer Materials , Guangzhou 510640 , China
| | - Zhonghua Chen
- College of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Xingrong Zeng
- College of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Key Lab of Guangdong Province for High Property and Functional Polymer Materials , Guangzhou 510640 , China
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58
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Dai X, Sun N, Nielsen SO, Stogin BB, Wang J, Yang S, Wong TS. Hydrophilic directional slippery rough surfaces for water harvesting. SCIENCE ADVANCES 2018; 4:eaaq0919. [PMID: 29670942 PMCID: PMC5903897 DOI: 10.1126/sciadv.aaq0919] [Citation(s) in RCA: 206] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 02/12/2018] [Indexed: 05/21/2023]
Abstract
Multifunctional surfaces that are favorable for both droplet nucleation and removal are highly desirable for water harvesting applications but are rare. Inspired by the unique functions of pitcher plants and rice leaves, we present a hydrophilic directional slippery rough surface (SRS) that is capable of rapidly nucleating and removing water droplets. Our surfaces consist of nanotextured directional microgrooves in which the nanotextures alone are infused with hydrophilic liquid lubricant. We have shown through molecular dynamics simulations that the physical origin of the efficient droplet nucleation is attributed to the hydrophilic surface functional groups, whereas the rapid droplet removal is due to the significantly reduced droplet pinning of the directional surface structures and slippery interface. We have further demonstrated that the SRS, owing to its large surface area, hydrophilic slippery interface, and directional liquid repellency, outperforms conventional liquid-repellent surfaces in water harvesting applications.
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Affiliation(s)
- Xianming Dai
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA
- Corresponding author. (X.D.); (T.-S.W.)
| | - Nan Sun
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Steven O. Nielsen
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Birgitt Boschitsch Stogin
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Jing Wang
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Shikuan Yang
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
| | - Tak-Sing Wong
- Department of Mechanical and Nuclear Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
- Corresponding author. (X.D.); (T.-S.W.)
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59
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Wang BL, Heng L, Jiang L. Temperature-Responsive Anisotropic Slippery Surface for Smart Control of the Droplet Motion. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7442-7450. [PMID: 29392931 DOI: 10.1021/acsami.7b16818] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Development of stimulus-responsive anisotropic slippery surfaces is important because of the high demand for such materials in the field of liquid directional-driven systems. However, current studies in the field of slippery surfaces are mainly conducted to prepare isotropic slippery surfaces. Although we have developed electric-responsive anisotropic slippery surfaces that enable smart control of the droplet motion, there remain challenges for designing temperature-responsive anisotropic slippery surfaces to control the liquid droplet motion on the surface and in the tube. In this work, temperature-responsive anisotropic slippery surfaces have been prepared by using paraffin, a thermo-responsive phase-transition material, as a lubricating fluid and directional porous polystyrene (PS) films as the substrate. The smart regulation of the droplet motion of several liquids on this surface was accomplished by tuning the substrate temperature. The uniqueness of this surface lies in the use of an anisotropic structure and temperature-responsive lubricating fluids to achieve temperature-driven smart control of the anisotropic motion of the droplets. Furthermore, this surface was used to design temperature-driven anisotropic microreactors and to manipulate liquid transfer in tubes. This work advances the understanding of the principles underlying anisotropic slippery surfaces and provides a promising material for applications in the biochip and microreactor system.
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Affiliation(s)
- By Lili Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry, Beihang University , Beijing 100191, China
| | - Liping Heng
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry, Beihang University , Beijing 100191, China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry, Beihang University , Beijing 100191, China
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60
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Wu S, Li L, Xue H, Liu K, Fan Q, Bai G, Wang J. Size Controllable, Transparent, and Flexible 2D Silver Meshes Using Recrystallized Ice Crystals as Templates. ACS NANO 2017; 11:9898-9905. [PMID: 28837316 DOI: 10.1021/acsnano.7b03821] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ice templates have been widely utilized for the preparation of porous materials due to the obvious advantages, such as environmentally benign and applicable to a wide range of materials. However, it remains a challenge to have controlled pore size as well as dimension of the prepared porous materials with the conventional ice template, since it often employs the kinetically not-stable growing ice crystals as the template. For example, there is no report so far for the preparation of 2D metal meshes with tunable pore size based on the ice template, although facile and eco-friendly prepared metal meshes are highly desirable for wearable electronics. Here, we report the preparation of 2D silver meshes with tunable mesh size employing recrystallized ice crystals as templates. Ice recrystallization is a kinetically stable process; therefore, the grain size of recrystallized ice crystals can be easily tuned, e.g., by adding different salts and changing the annealing temperature. Consequently, the size and line width of silver meshes obtained after freeze-drying can be easily adjusted, which in turn varied the conductivity of the obtained 2D silver film. Moreover, the silver meshes are transparent and display stable conductivity after the repeated stretching and bending. It can be envisioned that this approach for the preparation of 2D conducting films is of practical importance for wearable electronics. Moreover, this study provides a generic approach for the fabrication of 2D meshes with a controllable pore size.
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Affiliation(s)
- Shuwang Wu
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Linhai Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Han Xue
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Kai Liu
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Qingrui Fan
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Guoying Bai
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Jianjun Wang
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
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61
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Tenjimbayashi M, Higashi M, Yamazaki T, Takenaka I, Matsubayashi T, Moriya T, Komine M, Yoshikawa R, Manabe K, Shiratori S. Droplet Motion Control on Dynamically Hydrophobic Patterned Surfaces as Multifunctional Liquid Manipulators. ACS APPLIED MATERIALS & INTERFACES 2017; 9:10371-10377. [PMID: 28291325 DOI: 10.1021/acsami.7b01641] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this letter, we introduce a novel liquid manipulation strategy to design dynamically hydrophobic and statically hydrophobic/hydrophilic patterned surfaces using an "omniphobicity"-based technique. The surfaces guide the sliding direction of a droplet in the presence of a statically hydrophilic area where the droplet does not stick on the transport path significantly enhancing the fluidic system transport efficiency. The concept of dynamically hydrophobic and statically hydrophobic/hydrophilic patterned surfaces in conjunction with omniphobic patterning techniques having surface multifunctionality, we believe, has potential not only for fluidic applications but also for future material engineering development.
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Affiliation(s)
- Mizuki Tenjimbayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Masaki Higashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Taku Yamazaki
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Issei Takenaka
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Takeshi Matsubayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Takeo Moriya
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Masatsugu Komine
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Ryohei Yoshikawa
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Kengo Manabe
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
| | - Seimei Shiratori
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
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62
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Cha J, Shin H, Kim P. Crack/Fold Hybrid Structure-Based Fluidic Networks Inspired by the Epidermis of Desert Lizards. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28418-28423. [PMID: 27704760 DOI: 10.1021/acsami.6b10862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A bioinspired fluidic system with cracks and folds was introduced to emulate the structures and functions of desert lizards' integuments, which show marked ability of water management. Because there was a structural analogy between scales and interscalar channels of lizard's skin and cracks and folds of a bilayer elastic material, we can mimic lizard's skin by controlling the stress distribution on patterned elastomers. Our system showed not only capillary-driven water retention within confined fluidic network, but also stretching-driven biaxial water transport. Observed features of our system may enhance understanding of water management in relation to morphogenetic aspects of lizards.
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Affiliation(s)
- Junghwa Cha
- Department of Bio and Brain Engineering, KAIST , Daejeon 34141, Korea
| | - Hyunjae Shin
- Department of Bio and Brain Engineering, KAIST , Daejeon 34141, Korea
| | - Pilnam Kim
- Department of Bio and Brain Engineering, KAIST , Daejeon 34141, Korea
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63
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Heng L, Liu J, Hu R, Han KY, Guo LL, Liu Y, Li MY, Nie Q. Wettability and permeation of ethanol/water mixture on porous mesh surface. RSC Adv 2016. [DOI: 10.1039/c6ra19737j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A serial of copper meshes with different chemical composition and roughness was prepared by modifying different mixed thiols, which showed different wetting behavior and permeation behavior for different ethanol/water mixed solution.
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Affiliation(s)
- Liping Heng
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
- School of Chemistry and Environment
| | - Jie Liu
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
| | - Ruixiang Hu
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
| | - Ke-Yu Han
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
- School of Chemistry and Environment
| | - Lian-Lian Guo
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
| | - Ye Liu
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
| | - Meng-Ying Li
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
| | - Qiao Nie
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha
- China
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