1
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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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2
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Das A, Dey AB, Manna G, Sanyal MK, Mukherjee R. Nanoparticle-Mediated Stabilization of a Thin Polymer Bilayer. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anuja Das
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Arka Bikash Dey
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, West Bengal 700064, India
| | - Gouranga Manna
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka 560064, India
| | - Milan K. Sanyal
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, West Bengal 700064, India
| | - Rabibrata Mukherjee
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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3
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Bhandaru N, Mukherjee R. Ordering in Dewetting of a Thin Polymer Bilayer with a Topographically Patterned Interface. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02559] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nandini Bhandaru
- Department of Chemical Engineering, BITS Pilani, Hyderabad, Telangana 500078, India
| | - Rabibrata Mukherjee
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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4
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Das A, Bolleddu R, Singh AK, Bandyopadhyay D. Physicochemical defect guided dewetting of ultrathin films to fabricate nanoscale patterns. NANOTECHNOLOGY 2021; 32:195303. [PMID: 33535200 DOI: 10.1088/1361-6528/abe2c8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pathways to fabricate self-organized nanostructures have been identified exploiting the instabilities of ultrathin (<100 nm) polystyrene (PS) film on the polydimethylsiloxane (PDMS) substrates loaded with discrete and closely packed gold nanoparticles (AuNPs). The AuNPs were deposited on the PDMS substrates by chemical treatment, and the size and periodicity of the AuNPs were varied before coating the PS films. The study unveils that the physicochemical heterogeneity created by the AuNPs on the PDMS surface could guide the hole-formation, influence the average spacing between the holes formed at the initial dewetting stage, and affects the spacing and periodicity of the droplets formed at the end of the dewetting phase. The size and spacing of the holes and the droplets could be tuned by varying the nanoparticle loading on the PDMS substrate. Interestingly, as compared to the dewetting of PS films on the homogeneous PDMS surfaces, the AuNP guided dewetted patterns show ten-fold miniaturization, leading to the formation of the micro-holes and nanodroplets. The spacing between the droplets could also see a ten-fold reduction resulting in high-density random patterns on the PDMS substrate. Further, the use of a physicochemical substrate with varying density of physicochemical heterogeneities could impose a long-range order to the dewetted patterns to develop a gradient surface. The reported results can be of significance in the fabrication of high-density nanostructures exploiting the self-organized instabilities of thin polymers films.
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Affiliation(s)
- Abhijna Das
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Ravi Bolleddu
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Amit Kumar Singh
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Dipankar Bandyopadhyay
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Assam 781039, India
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5
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Yang Y, Xu LP, Zhang X, Wang S. Bioinspired wettable-nonwettable micropatterns for emerging applications. J Mater Chem B 2021; 8:8101-8115. [PMID: 32785360 DOI: 10.1039/d0tb01382j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Superhydrophilic and superhydrophobic surfaces are prevalent in nature and have received tremendous attention due to their importance in both fundamental research and practical applications. With the high interdisciplinary research and great development of microfabrication techniques, artificial wettable-nonwettable micropatterns inspired by the water-collection behavior of desert beetles have been successfully fabricated. A combination of the two extreme states of superhydrophilicity and superhydrophobicity on the same surface precisely, wettable-nonwettable micropatterns possess unique functionalities, such as controllable superwetting, anisotropic wetting, oriented adhesion, and other properties. In this review, we briefly describe the methods for fabricating wettable-nonwettable patterns, including self-assembly, electrodeposition, inkjet printing, and photolithography. We also highlight some of the emerging applications such as water collection, controllable bioadhesion, cell arrays, microreactors, printing techniques, and biosensors combined with various detection methods. Finally, the current challenges and prospects of this renascent and rapidly developing field are proposed and discussed.
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Affiliation(s)
- Yuemeng Yang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China. and School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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6
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Das A, Mukherjee R. Feature Size Modulation in Dewetting of Nanoparticle-Containing Ultrathin Polymer Films. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anuja Das
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Rabibrata Mukherjee
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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7
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Yang X, Liu S, Zhao Z, He Z, Lin T, Zhao Y, Li G, Qu J, Huang L, Peng X, Liu D. A facile, clean construction of biphilic surface on filter paper via atmospheric air plasma for highly efficient separation of water-in-oil emulsions. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117672] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Dhara P, Mukherjee R. Influence of Substrate Surface Properties on Spin Dewetting, Texture, and Phase Transitions of 5CB Liquid-Crystal Thin Films. J Phys Chem B 2020; 124:1293-1300. [DOI: 10.1021/acs.jpcb.9b11569] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Palash Dhara
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rabibrata Mukherjee
- Instability and Soft Patterning Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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9
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Liu W, Fan P, Cai M, Luo X, Chen C, Pan R, Zhang H, Zhong M. An integrative bioinspired venation network with ultra-contrasting wettability for large-scale strongly self-driven and efficient water collection. NANOSCALE 2019; 11:8940-8949. [PMID: 31017128 DOI: 10.1039/c8nr10003a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Collection of water from the atmosphere is a potential route to alleviate the global water shortage. However, it is still difficult to find a strategy to collect sufficient water on a large surface and transport it all off the surface without additional energy input. Inspired by redbud leaves, herein, we proposed a new water-collecting configuration. This configuration utilizes an ultra-contrasting wettability venation network with hierarchical micro-nano structures as the skeleton and integrates the strategies evolved by cacti and beetles. This venation network was fabricated by the technology based on ultra-fast lasers. We achieved a near-unity efficiency in collecting and centralizing the condensed water on the entire surface with a large area. Remarkable water collection and centralization capability were obtained. The venation networks manifested the notable enhancements of ∼166%, ∼352% and ∼644% in water collection efficiency when compared with conventional superhydrophobic surfaces at the tilt angles of 90°, 60° and 30°, respectively. This configuration can work continuously at all tilt angles, even against gravity at a negative tilt angle of 90°. In addition, the venation network can maintain excellent water collecting capability even under very arid conditions. The principle and fabrication technology of this venation network make it possible to scale up a practical network device for mass water collection and may be useful for water desalination, heat transfer, microfluidics, lab-on-a-chip, distillation and many other applications.
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Affiliation(s)
- Weijian Liu
- Laser Materials Processing Research Centre, School of Materials Science and Engineering, Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, PR China.
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10
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Chiu M, Wood JA, Widmer-Cooper A, Neto C. Aligned Droplet Patterns by Dewetting of Polymer Bilayers. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming Chiu
- School of Chemistry and The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Jared A. Wood
- School of Chemistry and The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Asaph Widmer-Cooper
- School of Chemistry and The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Chiara Neto
- School of Chemistry and The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
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11
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12
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Telford AM, Thickett SC, Neto C. Functional patterned coatings by thin polymer film dewetting. J Colloid Interface Sci 2017; 507:453-469. [DOI: 10.1016/j.jcis.2017.07.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/28/2017] [Accepted: 07/02/2017] [Indexed: 01/20/2023]
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13
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Yang X, Song J, Liu J, Liu X, Jin Z. A Twice Electrochemical-Etching Method to Fabricate Superhydrophobic-Superhydrophilic Patterns for Biomimetic Fog Harvest. Sci Rep 2017; 7:8816. [PMID: 28821794 PMCID: PMC5562878 DOI: 10.1038/s41598-017-09108-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/20/2017] [Indexed: 11/25/2022] Open
Abstract
Superhydrophobic-superhydrophilic patterned surfaces have attracted more and more attention due to their great potential applications in the fog harvest process. In this work, we developed a simple and universal electrochemical-etching method to fabricate the superhydrophobic-superhydrophilic patterned surface on metal superhydrophobic substrates. The anti-electrochemical corrosion property of superhydrophobic substrates and the dependence of electrochemical etching potential on the wettability of the fabricated dimples were investigated on Al samples. Results showed that high etching potential was beneficial for efficiently producing a uniform superhydrophilic dimple. Fabrication of long-term superhydrophilic dimples on the Al superhydrophobic substrate was achieved by combining the masked electrochemical etching and boiling-water immersion methods. A long-term wedge-shaped superhydrophilic dimple array was fabricated on a superhydrophobic surface. The fog harvest test showed that the surface with a wedge-shaped pattern array had high water collection efficiency. Condensing water on the pattern was easy to converge and depart due to the internal Laplace pressure gradient of the liquid and the contact angle hysteresis contrast on the surface. The Furmidge equation was applied to explain the droplet departing mechanism and to control the departing volume. The fabrication technique and research of the fog harvest process may guide the design of new water collection devices.
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Affiliation(s)
- Xiaolong Yang
- Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Jinlong Song
- Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, P. R. China.
- Collaborative Innovation Center of Major Machine Manufacturing in Liaoning, Dalian University of Technology, Dalian, 116024, P. R. China.
| | - Junkai Liu
- Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Xin Liu
- Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Zhuji Jin
- Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian, 116024, P. R. China
- Collaborative Innovation Center of Major Machine Manufacturing in Liaoning, Dalian University of Technology, Dalian, 116024, P. R. China
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14
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Wang WX, Liu Y, Wang YX, Chen H, Bai LJ. A novel and convenient preparation of antibacterial polyacrylonitrile nanofibers via post-modification using nitrile click chemistry and electrospinning. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0270-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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15
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Al-Khayat O, Hong JK, Beck DM, Minett AI, Neto C. Patterned Polymer Coatings Increase the Efficiency of Dew Harvesting. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13676-13684. [PMID: 28224792 DOI: 10.1021/acsami.6b16248] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Micropatterned polymer surfaces, possessing both topographical and chemical characteristics, were prepared on three-dimensional copper tubes and used to capture atmospheric water. The micropatterns mimic the structure on the back of a desert beetle that condenses water from the air in a very dry environment. The patterned coatings were prepared by the dewetting of thin films of poly-4-vinylpyridine (P4VP) on top of polystyrene films (PS) films, upon solvent annealing, and consist of raised hydrophilic bumps on a hydrophobic background. The size and density distribution of the hydrophilic bumps could be tuned widely by adjusting the initial thickness of the P4VP films: the diameter of the produced bumps and their height could be varied by almost 2 orders of magnitude (1-80 μm and 40-9000 nm, respectively), and their distribution density could be varied by 5 orders of magnitude. Under low subcooling conditions (3 °C), the highest rate of water condensation was measured on the largest (80 μm diameter) hydrophilic bumps and was found to be 57% higher than that on flat hydrophobic films. These subcooling conditions are achieved spontaneously in dew formation, by passive radiative cooling of a surface exposed to the night sky. In effect, the pattern would result in a larger number of dewy nights than a flat hydrophobic surface and therefore increases water capture efficiency. Our approach is suited to fabrication on a large scale, to enable the use of the patterned coatings for water collection with no external input of energy.
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Affiliation(s)
- Omar Al-Khayat
- School of Chemistry and ‡School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Jun Ki Hong
- School of Chemistry and ‡School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - David M Beck
- School of Chemistry and ‡School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Andrew I Minett
- School of Chemistry and ‡School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Chiara Neto
- School of Chemistry and ‡School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
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16
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Xu C, Yu H, Peng S, Lu Z, Lei L, Lohse D, Zhang X. Collective interactions in the nucleation and growth of surface droplets. SOFT MATTER 2017; 13:937-944. [PMID: 28009910 DOI: 10.1039/c6sm02352e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the process of solvent exchange, oil droplets nucleate and grow on a solid substrate in response to the oversaturation generated through the displacement of a good oil solvent by a poor one. The mean size of the droplets depends on flow rate, flow geometry and solution conditions. In this work, we investigate the surface coverage of the droplets and the correlation between the base area of the droplets and of the bare zone surrounding the droplets for various flow and solution conditions during the solvent exchange. The surface coverage increases with the increase in the flow rate, channel height and the oil concentration, and reaches a plateau between 35% and 50%. The spatial correlation is analysed with the help of the radial distribution function g(r) and a Voronoi tessellation. When the surface coverage reaches ∼25-30%, the number density of the droplets starts to drop, reflecting the mutual interaction and merging of the droplets. With further decrease in the droplet spacing and increase in surface coverage, the Voronoi analysis shows that the base area of the droplets increases linearly with the area size of the depleted zone. The collective interaction in the growth of surface nanodroplets is universal, independent of the specific conditions that control the droplet growth.
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Affiliation(s)
- Chenglong Xu
- Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville, VIC 3010, Australia
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17
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Zeng X, Qian L, Yuan X, Zhou C, Li Z, Cheng J, Xu S, Wang S, Pi P, Wen X. Inspired by Stenocara Beetles: From Water Collection to High-Efficiency Water-in-Oil Emulsion Separation. ACS NANO 2017; 11:760-769. [PMID: 27936586 DOI: 10.1021/acsnano.6b07182] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Inspired by the water-collecting mechanism of the Stenocara beetle's back structure, we prepared a superhydrophilic bumps-superhydrophobic/superoleophilic stainless steel mesh (SBS-SSM) filter via a facile and environmentally friendly method. Specifically, hydrophilic silica microparticles are assembled on the as-cleaned stainless steel mesh surface, followed by further spin-coating with a fluoropolymer/SiO2 nanoparticle solution. On the special surface of SBS-SSM, attributed to the steep surface energy gradient, the superhydrophilic bumps (hydrophilic silica microparticles) are able to capture emulsified water droplets and collect water from the emulsion even when their size is smaller than the pore size of the stainless steel mesh. The oil portion of the water-in-oil emulsion therefore permeates through pores of the superhydrophobic/superoleophilic mesh coating freely and gets purified. We demonstrated an oil recovery purity up to 99.95 wt % for surfactant-stabilized water-in-oil emulsions on the biomimetic SBS-SSM filter, which is superior to that of the traditional superhydrophobic/superoleophilic stainless steel mesh (S-SSM) filter lacking the superhydrophilic bump structure. Together with a facile and environmentally friendly coating strategy, this tool shows great application potential for water-in-oil emulsion separation and oil purification.
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Affiliation(s)
- Xinjuan Zeng
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Long Qian
- Department of Biology and Center for Genomics and Systems Biology, New York University , New York, New York 10003, United States
| | - Xianxia Yuan
- Department of Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P.R. China
| | - Cailong Zhou
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Zhaowen Li
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Jiang Cheng
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Shouping Xu
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Shuangfeng Wang
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Pihui Pi
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
| | - Xiufang Wen
- School of Chemical and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China
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Peyre J, Hamraoui A, Faustini M, Humblot V, Baccile N. Surface-induced assembly of sophorolipids. Phys Chem Chem Phys 2017; 19:15227-15238. [DOI: 10.1039/c7cp01339f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The surface self-assembly properties of acidic sophorolipids, a bolaform microbial glycolipid with pH-responsive properties, were studied based on the chemical nature of the support and pH of the solution.
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Affiliation(s)
- Jessie Peyre
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France UMR 7574
- Chimie de la Matière Condensée de Paris
| | - Ahmed Hamraoui
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France UMR 7574
- Chimie de la Matière Condensée de Paris
| | - Marco Faustini
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France UMR 7574
- Chimie de la Matière Condensée de Paris
| | - Vincent Humblot
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire de Réactivité de Surface
- UMR 7197
| | - Niki Baccile
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France UMR 7574
- Chimie de la Matière Condensée de Paris
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19
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Zhang H, Xu L, Xu Y, Huang G, Zhao X, Lai Y, Shi T. Enhanced Self-Organized Dewetting of Ultrathin Polymer Blend Film for Large-Area Fabrication of SERS Substrate. Sci Rep 2016; 6:38337. [PMID: 27922062 PMCID: PMC5138605 DOI: 10.1038/srep38337] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/08/2016] [Indexed: 01/10/2023] Open
Abstract
We study the enhanced dewetting of ultrathin Polystyrene (PS)/Poly (methyl methacrylate) (PMMA) blend films in a mixed solution, and reveal the dewetting can act as a simple and effective method to fabricate large-area surface-enhanced Raman scattering (SERS) substrate. A bilayer structure consisting of under PMMA layer and upper PS layer forms due to vertical phase separation of immiscible PS/PMMA during the spin-coating process. The thicker layer of the bilayer structure dominates the dewetting structures of PS/PMMA blend films. The diameter and diameter distribution of droplets, and the average separation spacing between the droplets can be precisely controlled via the change of blend ratio and film thickness. The dewetting structure of 8 nm PS/PMMA (1:1 wt%) blend film is proved to successfully fabricate large-area (3.5 cm × 3.5 cm) universal SERS substrate via deposited a silver layer on the dewetting structure. The SERS substrate shows good SERS-signal reproducibility (RSD < 7.2%) and high enhancement factor (2.5 × 107). The enhanced dewetting of polymer blend films broadens the application of dewetting of polymer films, especially in the nanotechnology, and may open a new approach for the fabrication of large-area SERS substrate to promote the application of SERS substrate in the rapid sensitive detection of trace molecules.
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Affiliation(s)
- Huanhuan Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,Laboratory of Surface Physics and Chemistry, Guizhou Education University, Guiyang 550018, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Lin Xu
- Laboratory of Surface Physics and Chemistry, Guizhou Education University, Guiyang 550018, P. R. China
| | - Yabo Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Gang Huang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xueyu Zhao
- School of Chemistry and Life Sciences, Guizhou Education University, Guiyang 550018, P. R. China
| | - Yuqing Lai
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Tongfei Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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20
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Al-Khayat O, Hong JK, Geraghty K, Neto C. “The Good, the Bad, and the Slippery”: A Tale of Three Solvents in Polymer Film Dewetting. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01579] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Omar Al-Khayat
- Schools
of Chemistry and ‡Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006 Australia
| | - Jun Ki Hong
- Schools
of Chemistry and ‡Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006 Australia
| | - Kieran Geraghty
- Schools
of Chemistry and ‡Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006 Australia
| | - Chiara Neto
- Schools
of Chemistry and ‡Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006 Australia
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21
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Brown PS, Bhushan B. Bioinspired materials for water supply and management: water collection, water purification and separation of water from oil. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2016; 374:rsta.2016.0135. [PMID: 27354732 DOI: 10.1098/rsta.2016.0135] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/21/2016] [Indexed: 05/25/2023]
Abstract
Access to a safe supply of water is a human right. However, with growing populations, global warming and contamination due to human activity, it is one that is increasingly under threat. It is hoped that nature can inspire the creation of materials to aid in the supply and management of water, from water collection and purification to water source clean-up and rehabilitation from oil contamination. Many species thrive in even the driest places, with some surviving on water harvested from fog. By studying these species, new materials can be developed to provide a source of fresh water from fog for communities across the globe. The vast majority of water on the Earth is in the oceans. However, current desalination processes are energy-intensive. Systems in our own bodies have evolved to transport water efficiently while blocking other molecules and ions. Inspiration can be taken from such to improve the efficiency of desalination and help purify water containing other contaminants. Finally, oil contamination of water from spills or the fracking technique can be a devastating environmental disaster. By studying how natural surfaces interact with liquids, new techniques can be developed to clean up oil spills and further protect our most precious resource.This article is part of the themed issue 'Bioinspired hierarchically structured surfaces for green science'.
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Affiliation(s)
- Philip S Brown
- Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics (NLBB), The Ohio State University, 201 W. 19th Avenue, Columbus, OH 43210-1142, USA
| | - Bharat Bhushan
- Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics (NLBB), The Ohio State University, 201 W. 19th Avenue, Columbus, OH 43210-1142, USA
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22
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Zhu H, Yang F, Li J, Guo Z. High-efficiency water collection on biomimetic material with superwettable patterns. Chem Commun (Camb) 2016; 52:12415-12417. [DOI: 10.1039/c6cc05857d] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A superhydrophilic surface with two superhydrophobic circular patterns was successfully prepared, which showed outstanding fog-harvesting efficiency with a water collection rate (WCR) of 1316.9 mg h−1 cm−2. The water collection process can be repeated 10 times without obvious variation in the WCR.
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Affiliation(s)
- Hai Zhu
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials
- Hubei University
- Wuhan
- People's Republic of China
- State Key Laboratory of Solid Lubrication
| | - Fuchao Yang
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials
- Hubei University
- Wuhan
- People's Republic of China
| | - Jing Li
- State Key Laboratory of Solid Lubrication
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials
- Hubei University
- Wuhan
- People's Republic of China
- State Key Laboratory of Solid Lubrication
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