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Wang X, Wen G, Wei Y. Aerodynamic Noise Simulation of a Super-High-Rise Building Facade with Shark-Like Grooved Skin. Biomimetics (Basel) 2024; 9:570. [PMID: 39329592 PMCID: PMC11430807 DOI: 10.3390/biomimetics9090570] [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: 08/16/2024] [Revised: 09/12/2024] [Accepted: 09/16/2024] [Indexed: 09/28/2024] Open
Abstract
The wind-driven aerodynamic noise of super-high-rise building facades not only affects the experience of use inside the building but also reduces the life cycle of building facade materials to some extent. In this paper, we are inspired by the micro-groove structure of shark skin with damping and noise reduction properties and apply bionic skin to reduce the aerodynamic noise impact of super-high-rise buildings. The aerodynamic noise performance of smooth and super-high-rise building models with bionic grooves is simulated via CFD to investigate the noise reduction performance of different bionic groove patterns, such as I-shape, ∪-shape, V-shape, and ∩-shape patterns, and their corresponding acoustic noise reduction mechanisms. This study showed that the bionic shark groove skin has a certain noise reduction effect, and the I-shaped groove has the best noise reduction effect. By applying bionic skin, the aerodynamic noise of super-high-rise buildings can be effectively reduced to improve the use experience and environmental quality of the buildings and provide a new research idea and application direction for the aerodynamic noise reduction design of building facades.
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Affiliation(s)
| | | | - Yangyang Wei
- Architecture and Design College, Nanchang University, Nanchang 330031, China
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Kumar R, Rezapourian M, Rahmani R, Maurya HS, Kamboj N, Hussainova I. Bioinspired and Multifunctional Tribological Materials for Sliding, Erosive, Machining, and Energy-Absorbing Conditions: A Review. Biomimetics (Basel) 2024; 9:209. [PMID: 38667221 PMCID: PMC11048303 DOI: 10.3390/biomimetics9040209] [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: 02/28/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Friction, wear, and the consequent energy dissipation pose significant challenges in systems with moving components, spanning various domains, including nanoelectromechanical systems (NEMS/MEMS) and bio-MEMS (microrobots), hip prostheses (biomaterials), offshore wind and hydro turbines, space vehicles, solar mirrors for photovoltaics, triboelectric generators, etc. Nature-inspired bionic surfaces offer valuable examples of effective texturing strategies, encompassing various geometric and topological approaches tailored to mitigate frictional effects and related functionalities in various scenarios. By employing biomimetic surface modifications, for example, roughness tailoring, multifunctionality of the system can be generated to efficiently reduce friction and wear, enhance load-bearing capacity, improve self-adaptiveness in different environments, improve chemical interactions, facilitate biological interactions, etc. However, the full potential of bioinspired texturing remains untapped due to the limited mechanistic understanding of functional aspects in tribological/biotribological settings. The current review extends to surface engineering and provides a comprehensive and critical assessment of bioinspired texturing that exhibits sustainable synergy between tribology and biology. The successful evolving examples from nature for surface/tribological solutions that can efficiently solve complex tribological problems in both dry and lubricated contact situations are comprehensively discussed. The review encompasses four major wear conditions: sliding, solid-particle erosion, machining or cutting, and impact (energy absorbing). Furthermore, it explores how topographies and their design parameters can provide tailored responses (multifunctionality) under specified tribological conditions. Additionally, an interdisciplinary perspective on the future potential of bioinspired materials and structures with enhanced wear resistance is presented.
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Affiliation(s)
- Rahul Kumar
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia; (M.R.); (H.S.M.); (N.K.); (I.H.)
| | - Mansoureh Rezapourian
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia; (M.R.); (H.S.M.); (N.K.); (I.H.)
| | - Ramin Rahmani
- CiTin–Centro de Interface Tecnológico Industrial, 4970-786 Arcos de Valdevez, Portugal;
- proMetheus–Instituto Politécnico de Viana do Castelo (IPVC), 4900-347 Viana do Castelo, Portugal
| | - Himanshu S. Maurya
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia; (M.R.); (H.S.M.); (N.K.); (I.H.)
- Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden
| | - Nikhil Kamboj
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia; (M.R.); (H.S.M.); (N.K.); (I.H.)
- Department of Mechanical and Materials Engineering, University of Turku, 20500 Turku, Finland
- TCBC–Turku Clinical Biomaterials Centre, Department of Biomaterials Science, Faculty of Medicine, Institute of Dentistry, University of Turku, 20014 Turku, Finland
| | - Irina Hussainova
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia; (M.R.); (H.S.M.); (N.K.); (I.H.)
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Hu X, Yu J, Li Y, Xia Y, Xu X, Zhang R. Minimum Quantity Lubrication Jet Noise: Passive Control. MICROMACHINES 2023; 14:1814. [PMID: 37893251 PMCID: PMC10609281 DOI: 10.3390/mi14101814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/03/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023]
Abstract
Jet noise is a common problem in minimum quantity lubrication (MQL) technology. This should be given great attention because of its serious impacts on the physical and mental health of the operators. In this study, a micro-grooved nozzle is proposed based on the noise reduction concept of biological micro-grooves. The flow field and acoustic characteristics of an original nozzle and a micro-grooved nozzle were investigated numerically to help better understand the noise reduction mechanism. The reasons for noise generation and the effects of the length (L), width (W) and depth (δ) of the micro-grooves on noise reduction were analyzed. It was found that jet noise is generated by the large-scale vortex ring structure and the pressure fluctuations caused by its motion. The overall sound pressure level (OASPL) decreased with the increases in W and δ, and increased with the increase in L. Among of them, δ has the greatest effect on noise reduction. The maximum noise reduction achieved was 6.66 dB, as verified by the OASPL test. Finally, the noise reduction mechanism was discussed in terms of the flow field, vorticity and the frequency characteristics. Micro-grooves can enhance the mixing of airflow inside the nozzle and accelerate the process of large-scale vortices breaking into smaller-scale vortices. It also reduces the sound pressure level (SPL) of middle frequencies, as well as the SPL of high frequencies on specific angles.
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Affiliation(s)
- Xiaodong Hu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Junhao Yu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yuanlong Li
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yu Xia
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Xuefeng Xu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Ruochong Zhang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (X.H.); (J.Y.); (Y.L.); (Y.X.); (X.X.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
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Sharma SK, Grewal HS. Tribological Behavior of Bioinspired Surfaces. Biomimetics (Basel) 2023; 8:biomimetics8010062. [PMID: 36810393 PMCID: PMC9944884 DOI: 10.3390/biomimetics8010062] [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: 12/17/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 02/05/2023] Open
Abstract
Energy losses due to various tribological phenomena pose a significant challenge to sustainable development. These energy losses also contribute toward increased emissions of greenhouse gases. Various attempts have been made to reduce energy consumption through the use of various surface engineering solutions. The bioinspired surfaces can provide a sustainable solution to address these tribological challenges by minimizing friction and wear. The current study majorly focuses on the recent advancements in the tribological behavior of bioinspired surfaces and bio-inspired materials. The miniaturization of technological devices has increased the need to understand micro- and nano-scale tribological behavior, which could significantly reduce energy wastage and material degradation. Integrating advanced research methods is crucial in developing new aspects of structures and characteristics of biological materials. Depending upon the interaction of the species with the surrounding, the present study is divided into segments depicting the tribological behavior of the biological surfaces inspired by animals and plants. The mimicking of bio-inspired surfaces resulted in significant noise, friction, and drag reduction, promoting the development of anti-wear and anti-adhesion surfaces. Along with the reduction in friction through the bioinspired surface, a few studies providing evidence for the enhancement in the frictional properties were also depicted.
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Affiliation(s)
- Sachin Kumar Sharma
- Surface Science and Tribology Lab, Department of Mechanical Engineering, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar 201314, Uttar Pradesh, India
| | - Harpreet Singh Grewal
- Surface Science and Tribology Lab, Department of Mechanical Engineering, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar 201314, Uttar Pradesh, India
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Jo W, Kang HS, Choi J, Jung J, Hyun J, Kwon J, Kim I, Lee H, Kim HT. Light-Designed Shark Skin-Mimetic Surfaces. NANO LETTERS 2021; 21:5500-5507. [PMID: 33913722 DOI: 10.1021/acs.nanolett.1c00436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sharks, marine creatures that swim fast and have an antifouling ability, possess dermal denticle structures of micrometer-size. Because the riblet geometries on the denticles reduce the shear stress by inducing the slip of fluid parallel to the stream-wise direction, shark skin has the distinguished features of low drag and antifouling. Although much attention has been given to low-drag surfaces inspired from shark skin, it remains an important challenge to accurately mimic denticle structures in the micrometer scale and to finely control their structural features. This paper presents a novel method to create shark skin-mimetic denticle structures for low drag by exploiting a photoreconfigurable azopolymer. The light-designed denticle structure exhibits superior hydrophobicity and an antifouling effect as sharks do. This work suggests that our novel photoreconfiguration technology, mimicking shark skin and systematically manipulating various structural parameters, can be used in a reliable manner for diverse applications requiring low-drag surfaces.
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Affiliation(s)
- Wonhee Jo
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hong Suk Kang
- Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jaeho Choi
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jinkwan Jung
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jonghyun Hyun
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jaehyung Kwon
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Ilju Kim
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hongkyung Lee
- Department of Energy Science and Engineering, DGIST, Daegu 42988, Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
- KAIST Institute for the NanoCentury, KAIST, Daejeon 34141, Republic of Korea
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Zhou H, Liu C, Tian G, Feng X, Jia C. Research on the drag reduction property of puffer (Takifugu flavidus) spinal nonsmooth structure surface. Microsc Res Tech 2020; 83:795-803. [PMID: 32144850 DOI: 10.1002/jemt.23470] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/17/2020] [Accepted: 02/25/2020] [Indexed: 01/09/2023]
Abstract
Puffers show good drag reduction performance during migration. It is worth noting that spines which are different from ordinary fish scales are densely distributed on the puffer skin. Here, the special morphological structure of puffer spines was observed using microscopy techniques, accurate contour models were established based on image processing techniques and curve fitting, then feature sizes were obtained. Based on the results, the nonsmooth surface was established by orthogonal test to simulate the flow field. In addition, the influence of spinal structure on boundary layer flow field and the drag reduction property of nonsmooth surface were further analyzed. The nonsmooth surface formed by spinal structure elements can effectively reduce the wall shear stress and Reynolds stress, and there was a special "climbing vortex" phenomenon, so as to reduce the surface viscous friction resistance and achieve drag reduction. Compared with the smooth surface, the drag reduction rate of the nonsmooth surface was 12.94% when the inflow velocity was 5 m/s, which revealed and verified the drag reduction performance of the spines of puffer skin. The results lay a foundation for further research and optimization of drag reduction ability of nonsmooth surface of bionic spines. HIGHLIGHTS: The contour of the spinous process was accurately reflected by the Fourier function. The spines of puffer skin have good drag reduction effect. There was a special "climbing vortex" phenomenon to explain the drag reduction property.
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Affiliation(s)
- Honggen Zhou
- School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China.,Advanced Manufacturing Laboratory of Ships and Marine Machinery and Equipment in Jiangsu Province, Zhenjiang, China
| | - Chenqing Liu
- School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Guizhong Tian
- School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China.,Advanced Manufacturing Laboratory of Ships and Marine Machinery and Equipment in Jiangsu Province, Zhenjiang, China
| | - Xiaoming Feng
- School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China.,Advanced Manufacturing Laboratory of Ships and Marine Machinery and Equipment in Jiangsu Province, Zhenjiang, China
| | - Changfeng Jia
- School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
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Multi-Scale Surface Texturing in Tribology—Current Knowledge and Future Perspectives. LUBRICANTS 2019. [DOI: 10.3390/lubricants7110095] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Surface texturing has been frequently used for tribological purposes in the last three decades due to its great potential to reduce friction and wear. Although biological systems advocate the use of hierarchical, multi-scale surface textures, most of the published experimental and numerical works have mainly addressed effects induced by single-scale surface textures. Therefore, it can be assumed that the potential of multi-scale surface texturing to further optimize friction and wear is underexplored. The aim of this review article is to shed some light on the current knowledge in the field of multi-scale surface textures applied to tribological systems from an experimental and numerical point of view. Initially, fabrication techniques with their respective advantages and disadvantages regarding the ability to create multi-scale surface textures are summarized. Afterwards, the existing state-of-the-art regarding experimental work performed to explore the potential, as well as the underlying effects of multi-scale textures under dry and lubricated conditions, is presented. Subsequently, numerical approaches to predict the behavior of multi-scale surface texturing under lubricated conditions are elucidated. Finally, the existing knowledge and hypotheses about the underlying driven mechanisms responsible for the improved tribological performance of multi-scale textures are summarized, and future trends in this research direction are emphasized.
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Li T, Qin D, Li M, Zhang J. Aerodynamic Drag Reduction of a High-Speed Train Nose With Bionic Round Pits. Comput Sci Eng 2019. [DOI: 10.1109/mcse.2019.2902474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tian Li
- Southwest Jiatong University
| | | | - Ming Li
- CRRC Tangshan Company Limited
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Wu L, Jiao Z, Song Y, Liu C, Wang H, Yan Y. Experimental investigations on drag-reduction characteristics of bionic surface with water-trapping microstructures of fish scales. Sci Rep 2018; 8:12186. [PMID: 30111771 PMCID: PMC6093923 DOI: 10.1038/s41598-018-30490-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 07/25/2018] [Indexed: 11/29/2022] Open
Abstract
Biological surfaces with unique wettability in nature have provided an enormous innovation for scientists and engineers. More specifically, materials possessing various wetting properties have drawn considerable attention owing to their promising application prospects. Recently, great efforts have been concentrated on the researches on wetting-induced drag-reduction materials inspired by biology because of their ability to save energy. In this work, the drag-reduction characteristics of the bionic surface with delicate water-trapping microstructures of fish Ctenopharyngodon idellus scales were explored by experimental method. Firstly, the resistance of smooth surface and bionic surface experimental sample at different speeds was carefully tested through the testing system for operation resistance. Then, the contact angle (CA) of fish scale surface was measured by means of the contact angle measuring instrument. It was discovered that the bionic surface created a rewarding drag-reduction effect at a low speed, and the drag-reduction rate significantly displayed a downward trend with the increase in flow speed. Thus, when the rate was 0.66 m/s, the drag-reduction effect was at the optimum level, and the maximum drag reduction rate was 2.805%, which was in concordance with the simulated one. Furthermore, a contact angle (CA) of 11.5° appeared on the fish scale surface, exhibiting fine hydrophilic property. It further manifested the spreading-wetting phenomenon and the higher surface energy for the area of apical of fish scales, which played an important role in drag-reduction performance. This work will have a great potential in the engineering and transportation field.
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Affiliation(s)
- Liyan Wu
- College of Engineering, Shenyang Agricultural University, Shenyang, 110161, P.R. China
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Zhibin Jiao
- College of Engineering, Shenyang Agricultural University, Shenyang, 110161, P.R. China
| | - Yuqiu Song
- College of Engineering, Shenyang Agricultural University, Shenyang, 110161, P.R. China
| | - Cuihong Liu
- College of Engineering, Shenyang Agricultural University, Shenyang, 110161, P.R. China
| | - Huan Wang
- College of Engineering, Shenyang Agricultural University, Shenyang, 110161, P.R. China
| | - Yuying Yan
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK.
- Centre for Fluids & Thermal Engineering Research, University of Nottingham Ningbo China, Ningbo, China.
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Fu Y, Yuan C, Bai X. Marine drag reduction of shark skin inspired riblet surfaces. BIOSURFACE AND BIOTRIBOLOGY 2017. [DOI: 10.1016/j.bsbt.2017.02.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Müller FA, Kunz C, Gräf S. Bio-Inspired Functional Surfaces Based on Laser-Induced Periodic Surface Structures. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E476. [PMID: 28773596 PMCID: PMC5456748 DOI: 10.3390/ma9060476] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/06/2016] [Accepted: 06/07/2016] [Indexed: 12/26/2022]
Abstract
Nature developed numerous solutions to solve various technical problems related to material surfaces by combining the physico-chemical properties of a material with periodically aligned micro/nanostructures in a sophisticated manner. The utilization of ultra-short pulsed lasers allows mimicking numerous of these features by generating laser-induced periodic surface structures (LIPSS). In this review paper, we describe the physical background of LIPSS generation as well as the physical principles of surface related phenomena like wettability, reflectivity, and friction. Then we introduce several biological examples including e.g., lotus leafs, springtails, dessert beetles, moth eyes, butterfly wings, weevils, sharks, pangolins, and snakes to illustrate how nature solves technical problems, and we give a comprehensive overview of recent achievements related to the utilization of LIPSS to generate superhydrophobic, anti-reflective, colored, and drag resistant surfaces. Finally, we conclude with some future developments and perspectives related to forthcoming applications of LIPSS-based surfaces.
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Affiliation(s)
- Frank A Müller
- Otto Schott Institute of Materials Research (OSIM), Löbdergraben 32, Jena 07743, Germany.
| | - Clemens Kunz
- Otto Schott Institute of Materials Research (OSIM), Löbdergraben 32, Jena 07743, Germany.
| | - Stephan Gräf
- Otto Schott Institute of Materials Research (OSIM), Löbdergraben 32, Jena 07743, Germany.
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