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Miao J, Tsang ACH. Reconfigurability-Encoded Hierarchical Rectifiers for Versatile 3D Liquid Manipulation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405641. [PMID: 39072942 DOI: 10.1002/advs.202405641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/02/2024] [Indexed: 07/30/2024]
Abstract
Manipulating small-volume liquids is crucial in natural processes and industrial applications. However, most liquid manipulation technologies involve complex energy inputs or non-adjustable wetting gradient surfaces. Here, a simple and adjustable 3D liquid manipulation paradigm is reported to control liquid behaviors by coupling liquid-air-solid interfacial energy with programmable magnetic fields. This paradigm centers around a hierarchical rectifier with magnetized microratchets, using Laplace pressure asymmetry to enable multimodal directional steering of various surface tension liquids (23-72 mN m-1). The scale-dependent effect in microratchet design shows its superiority in handling small-volume liquids across three orders of magnitude (100-103 µL). Under programmed magnetic fields, the rectifier can reconfigure its morphology to harness interfacial energy to exhibit richer liquid behaviors without dynamic real-time control. Reconfigured rectifiers show improved rectification performance in the inertia-dominant fluid regime, i.e., a remarkable 2000-fold increase in the critical Weber number for pure ethanol. Moreover, the rectifier's switchable reconfigurations offer flexible control over liquid transport directions and spatiotemporally controllable 3D liquid manipulation reminiscent of inchworm motions. This scalable liquid manipulation paradigm promotes versatile engineering and biochemistry applications, e.g., portable liquid purity testing (screening resolution <1 mN m-1), logical open-channel microfluidics, and automated chemical reaction platforms.
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Affiliation(s)
- Jiaqi Miao
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, 999077, China
| | - Alan C H Tsang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, 999077, China
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2
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Xuan S, Yin H, Li G, Yang Y, Wang Y, Liu J, Liu S, Li X, Song Y, Wu T, Yin K. Femtosecond laser composite manufactured double-bionic micro-nano structure for efficient photothermal anti-icing/deicing. MATERIALS HORIZONS 2024; 11:3561-3572. [PMID: 38932603 DOI: 10.1039/d4mh00500g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
The solar anti-icing/deicing (SADI) strategy represents an environmentally friendly approach for removing ice efficiently. However, the extensive use of photothermal materials could negatively impact financial performance. Therefore, enhancing light utilization efficiency, especially by optimizing the design of a structure with a low content of photothermal materials, has rapidly become a focal point of research. Drawing inspiration from the antireflective micro-nano structure of compound eyes and the thermal insulating hollow structure of polar bear hair, we proposed a new strategy to design a bionic micro-nano hollow film (MNHF). The MNHF was created using a composite manufacturing process that combines femtosecond laser ablation with template transfer techniques. Both theoretical simulations and empirical tests have confirmed that this structure significantly improves photothermal conversion efficiency and thermal radiation capability. Compared to plane film, the photothermal conversion efficiency of MNHF is increased by 45.85%. Under 1.5 sun, the equilibrium temperature of MNHF can reach 73.8 °C. Moreover, even after 10 icing-deicing cycles, MNHF maintains an ultra-low ice adhesion strength of 1.8 ± 0.3 kPa. Additionally, the exceptional mechanical stability, chemical resistance, and self-cleaning capabilities of the MNHF make its practical application feasible. This innovative structure paves the way for designing cost-effective and robust surfaces for efficient photothermal anti-icing/deicing on airplane wings.
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Affiliation(s)
- Sensen Xuan
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Huan Yin
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Guoqiang Li
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Yi Yang
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Yuan Wang
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Jiasong Liu
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Senyun Liu
- Key Laboratory of Icing and Anti/Deicing, China Aerodynamics Research and Development Center, Mianyang 621000, P. R. China.
| | - Xiaohong Li
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Yuegan Song
- School of Manufacture Science and Engineering, School of Information Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China.
| | - Tingni Wu
- Hunan Key Laboratory of Nano photonics and Devices, School of Physics, Central South University, Changsha 410083, P. R. China.
| | - Kai Yin
- Hunan Key Laboratory of Nano photonics and Devices, School of Physics, Central South University, Changsha 410083, P. R. China.
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Zhu Y, Niu H, Wang Y, Li G, Qiu B, Zhang M, Yan F, Xu Y, Guo C, Xuan S. Janus Flexible Device with Microcone Channels for Sampling and Analysis of Biological Microfluidics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13648-13656. [PMID: 38952282 DOI: 10.1021/acs.langmuir.4c01251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Controlling the spontaneous directional transport of droplets plays an important role in the application of microchemical reactions and microdroplet detection. Although the relevant technologies have been widely studied, the existing spontaneous droplet transport strategies still face problems of complex structure, single function, and poor flexibility. Inspired by the spontaneous droplet transport strategy in nature, an asymmetric wettability surface with microcone channels (AWS-MC) is prepared on a flexible fabric by combining surface modification and femtosecond laser manufacturing technology. On this surface, the capillary force and Laplace pressure induced by the wettability gradient and the geometric structure gradient drive the droplet transport from the hydrophobic surface to the hydrophilic surface. Notably, droplets in adjacent hydrophilic regions do not exchange substances even if the gap in the hydrophilic region is only 1 mm, which provides an ideal platform for numerous detections by a single drop. The droplet transport strategy does not require external energy and can adapt to the manipulation of various droplet types. Application of this surface in the blood of organisms is demonstrated. This work provides an effective method for microdroplet-directed self-transport and microdroplet detection.
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Affiliation(s)
- Yuying Zhu
- Center for Biomedical Imaging, University of Science and Technology of China, Hefei 230027, Anhui, P. R. China
| | - Hanhan Niu
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Yuan Wang
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Guoqiang Li
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Bensheng Qiu
- Center for Biomedical Imaging, University of Science and Technology of China, Hefei 230027, Anhui, P. R. China
| | - Miaoqi Zhang
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Fei Yan
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Yuanchong Xu
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Chenghong Guo
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Sensen Xuan
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, P. R. China
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4
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Chen R, Zhang H, Du Y, Ma H, Ma X, Ji J, Wang X, Xue M. Photothermal Conversion of the Oleophilic PVDF/Ti 3C 2T x Porous Foam Enables Non-Aqueous Liquid System Applicable Actuator. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309130. [PMID: 38247181 DOI: 10.1002/smll.202309130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/20/2023] [Indexed: 01/23/2024]
Abstract
Various physical and chemical reaction processes occur in non-aqueous liquid systems, particularly in oil phase systems. Therefore, achieving efficient, accurate, controllable, and cost-effective movement and transfer of substances in the oil phase is crucial. Liquid-phase photothermal actuators (LPAs) are commonly used for material transport in liquid-phase systems due to their remote operability and precise control. However, existing LPAs typically rely on materials like hydrogels and flexible polymers, commonly unsuitable for non-aqueous liquids. Herein, a 3D porous poly(vinylidene fluoride) (PVDF)/Ti3C2Tx actuator is developed using a solvent displacement method. It demonstrates directional movement and controlled material transport in non-aqueous liquid systems. When subject to infrared light irradiation (2.0 W cm-2), the actuator achieves motion velocities of 7.3 and 6 mm s-1 vertically and horizontally, respectively. The actuator's controllable motion capability is primarily attributed to the foam's oil-wettable properties, 3D porous oil transport network, and the excellent photothermal conversion performance of Ti3C2Tx, facilitating thermal diffusion and the Marangoni effect. Apart from multidimensional directions, the actuator enables material delivery and obstacle avoidance by transporting and releasing target objects to a predetermined position. Hence, the developed controllable actuator offers a viable solution for effective motion control and material handling in non-aqueous liquid environments.
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Affiliation(s)
- Ruoqi Chen
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huanrong Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuhang Du
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hui Ma
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xinlei Ma
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Junhui Ji
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xusheng Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Mianqi Xue
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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5
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Zuo P, Liu T, Li F, Wang G, Zhang K, Li X, Han W, Tian H, Hu L, Huang H, Zhu D, Jiang L. Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser. ACS OMEGA 2024; 9:20988-20996. [PMID: 38764673 PMCID: PMC11097191 DOI: 10.1021/acsomega.4c00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/21/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
Carbon fiber reinforced polymer (CFRP), a highly engineered lightweight material with superior properties, is widely used in industrial fields, such as aerospace, automobile, and railway transportation, as well as medical implants and supercapacitor. This work presents an effective surface treatment method for the controllable fabrication of hydrophilic surface micro/nanostructures of CFRP through femtosecond laser processing. Selective removal of the epoxy resin and leaving the carbon fibers exposed are achieved when CFRP is weakly ablated by a femtosecond laser. The diameters and structures of the carbon fibers can be controlled by adjusting the laser processing parameters. Three-dimensional surface micro/nanostructures are processed when CFRP is strongly ablated by a femtosecond laser. Meanwhile, the transformation of the sp2 orbitals to sp3 orbitals of graphitic carbons of carbon fibers is induced by a femtosecond laser. Moreover, the investigation of surface roughness and wettability of femtosecond laser-processed CFRP indicates increased roughness and excellent hydrophilicity (a contact angle of 28.1°). This work reveals the effect of femtosecond laser processing on the regulation of the physicochemical properties of CFRP, which can be applicable to surface treatment and performance control of other fiber-resin composites. The excellent hydrophilicity will be conducive to the combination of CFRP with other materials or to reducing the friction resistance of CFRP used in medical implants.
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Affiliation(s)
- Pei Zuo
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Tongfeng Liu
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Fang Li
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Guoyan Wang
- Beijing
Institute of Space Mechanics & Electricity, China Academy of Space Technology, Beijing 100094, China
| | - Kaihu Zhang
- Beijing
Spacecrafts, China Academy of Space Technology, Beijing 100094, China
| | - Xin Li
- Laser
Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Weina Han
- Laser
Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Hong Tian
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Lifei Hu
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Helang Huang
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Di Zhu
- School
of Mechanical and Electrical Engineering, Hubei Provincial Key Laboratory
of Chemical Equipment Intensification and Intrinsic Safety, School
of Optical Information and Energy Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Lan Jiang
- Laser
Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
- Beijing
Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
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6
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Yan D, Yin K, He Y, Liu Y, Wang L, Deng Q, He J, Awan SU, Khalil ASG. Recent advances in functional micro/nanomaterials for removal of crude oil via thermal effects. NANOSCALE 2024; 16:7341-7362. [PMID: 38511991 DOI: 10.1039/d4nr00501e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Crude oil is one of the most widely used energy and industrial raw materials that is crucial to the world economy, and is used to produce various petroleum products. However, crude oil often spills during extraction, transportation and use, causing negative impacts on the environment. Thus, there is a high demand for products to remediate leaked crude oil. Among them, oleophilic and hydrophobic adsorbents can absorb crude oil through thermal effects and are research hotspots. In this review, we first present an overview of wettability theory, the heating principles of various thermal effects, and the theory of reducing crude oil viscosity by heating. Then we discuss adsorbents based on different heating methods including the photothermal effect, Joule heating effect, alternating magnetic field heating effect, and composite heating effect. Preparation methods and oil adsorption performance of adsorbents are summarized. Finally, the advantages and disadvantages of various heating methods are briefly summarized, as well as the prospects for future research.
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Affiliation(s)
- Duanhong Yan
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Kai Yin
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Yuchun He
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Yao Liu
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Lingxiao Wang
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Qinwen Deng
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Jun He
- Hunan Key Laboratory of Nanophotonic and Devices, School of Physics, Central South University, Changsha, 410083, China.
| | - Saif Ullah Awan
- Department of Electrical Engineering, NUST College of Electrical and Mechanical Engineering, National University of Sciences and Technology (NUST), Islamabad 54000, Pakistan
| | - Ahmed S G Khalil
- Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology (E-JUST), 179 New Borg El-Arab City, Alexandria, Egypt
- Environmental and Smart Technology Group, Faculty of Science, Fayoum University, Fayoum 63514, Egypt
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7
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Yang P, Yin K, Song X, Wang L, Deng Q, Pei J, He Y, Arnusch CJ. Airflow Triggered Water Film Self-Sculpturing on Femtosecond Laser-Induced Heterogeneously Wetted Micro/Nanostructured Surfaces. NANO LETTERS 2024; 24:3133-3141. [PMID: 38477056 DOI: 10.1021/acs.nanolett.3c05042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Liquid manipulation is essential for daily life and modern industry, and it is widely used in various fields, including seawater desalination, microfluidic robots, and biomedical engineering. Nevertheless, the current research focuses on the manipulation of individual droplets. There are a few projects for water film management. Here, we proposed a facile method of wind-triggered water film self-sculpturing based on a heterogeneous wettability surface, which is achieved by the femtosecond laser direct writing technology and femtosecond laser deposition. Under the conditions of various airflow velocities and water film thicknesses, three distinct behaviors of the water film were analyzed. As a result, when the water film thickness is lower than 4.9 mm, the self-sculpture process will occur until the whole superhydrophobic surface dewetting. Four potential applications are demonstrated, including encryption, oil containers, reconfigurable patterning, and self-splitting devices. This work provides a new approach for manipulating a water film of fluid control engineering.
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Affiliation(s)
- Pengyu Yang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Kai Yin
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
- The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Xinghao Song
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Lingxiao Wang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Qinwen Deng
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Jiaqing Pei
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Yuchun He
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China
| | - Christopher J Arnusch
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel
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8
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Li M, Guo Q, Wen J, Zhan F, Shi M, Zhou N, Huang C, Wang L, Mao H. Oriented bouncing of droplets with a small Weber number on inclined one-dimensional nanoforests. NANOSCALE 2024; 16:5343-5351. [PMID: 38375552 DOI: 10.1039/d3nr05449g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Asymmetric superhydrophobic structures with anisotropic wettability can achieve directional bouncing of droplets and thus can have applications in directional self-cleaning, liquid transportation, and heat transfer. To achieve convenient large-scale preparation of asymmetric superhydrophobic surfaces, inclined nanoforests are prepared in this work using a technique of competitive ablation polymerization, which allows the control of the inclined angles, diameters, and heights of the nanostructures. In this study, such asymmetric structures with the smallest dimension (230 nm diameter) known are achieved by a simple etching method to guide droplet unidirectional bouncing. With such nanoforests, the mechanism of droplet bouncing on their surface is investigated, and controllable droplet bouncing over a long distance is achieved using droplets with a low Weber number. The proposed structure has a promising future in directional self-cleaning, liquid transportation and heat transfer.
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Affiliation(s)
- Mao Li
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Qiming Guo
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jing Wen
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fei Zhan
- Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing, 100083, China.
| | - Meng Shi
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Na Zhou
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chengjun Huang
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Lei Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing, 100083, China.
| | - Haiyang Mao
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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9
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Li D, Li C, Zhang M, Xiao M, Li J, Yang Z, Fu Q, Wang P, Yu K, Pan Y. Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10984-10995. [PMID: 38364209 DOI: 10.1021/acsami.3c17348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Harvesting fog is a potential and effective way to alleviate the crisis of water resource shortage. A highly efficient and economical fog harvesting method has always been a global and common goal. Here, a promising fog harvesting method by coupling plasma and micro/nano materials is proposed, which can achieve 93% fog collection efficiency with consuming power of only 0.76 W/0.04 m2. The basic method is to utilize nanoparticles to decorate both the discharge electrode and the collecting electrode of the micro/nano electrostatic fog collector. For the discharge electrode, the nanoparticles can achieve an order of magnitude higher electric field strength and a 28.6% decrease in the operating voltage (14 kV decreases to 10 kV). For the collecting electrode, a novel composite structure of hydrophobic/hydrophilic (HB/HL) is proposed. The core advantage is the directional droplet transport at the junction of HB and HL caused by surface tension can adjust the accumulated droplets on the two sides, which avoids the droplet residue and mesh blockage in the general structure. This technology provides an innovative approach for the collection of microdroplets and a new design idea for the fog collector to deal with the water crisis.
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Affiliation(s)
- Dingchen Li
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chuan Li
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ming Zhang
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Menghan Xiao
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiawei Li
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhiwen Yang
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qixiong Fu
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Pengyu Wang
- Digital Grid Research Institute, China Southern Power Grid, Guangzhou 510670, China
| | - Kexun Yu
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuan Pan
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan 430074, China
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10
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Wang Z, Liu X, Guo Y, Tong B, Zhang G, Liu K, Jiao Y. Armored Superhydrophobic Surfaces with Excellent Drag Reduction in Complex Environmental Conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38335533 DOI: 10.1021/acs.langmuir.3c03544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Superhydrophobic surfaces (SHSs) have possibilities for achieving significantly reduced solid-liquid frictional drag in the marine sector due to their excellent water-repelling properties. Although the stability of SHSs plays a key role in drag reduction, little consideration was given to the effect of extreme environments on the ability of SHSs to achieve drag reduction underwater, particularly when subjected to acidic conditions. Here, we propose interconnected microstructures to protect superhydrophobic coatings with the aim of enhancing the stability of SHSs in extreme environments. The stability of armored SHSs (ASHSs) was demonstrated by the contact angle and bounce time of droplets on superhydrophobic surfaces treated by various methods, resulting in an ASHS surface with excellent stability under extreme environmental conditions. Additionally, inspired by microstructures protecting superhydrophobic nanomaterials from frictional wear, the armored superhydrophobic spheres (ASSPs) were designed to explain from theoretical and experimental perspectives why ASSPs can achieve sustainable drag reduction and demonstrate that the ASSPs can achieve drag reduction of over 90.4% at a Reynolds number of 6.25 × 104 by conducting water entry experiments on spheres treated in various solutions. These studies promote a fundamental understanding of what drives the application of SHSs under extreme environmental conditions and provide practical strategies to maximize frictional drag reduction.
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Affiliation(s)
- Zhaochang Wang
- School of Mechanical Engineering, Anhui University of Technology, Maanshan 243032, China
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Xiaojun Liu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Yuhang Guo
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Baohong Tong
- School of Mechanical Engineering, Anhui University of Technology, Maanshan 243032, China
| | - Guotao Zhang
- School of Mechanical Engineering, Anhui University of Technology, Maanshan 243032, China
| | - Kun Liu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Yunlong Jiao
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
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11
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Lin Y, Liu X, Babar AA, Wang X, Yu J, Ding B. Sweat Gland-Inspired Skin-like Fabric with Directional Water Transport and Durability for Efficient Personal Moisture Management. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37910634 DOI: 10.1021/acsami.3c11006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Directional water transport textiles are an energy-free approach to improving the comfort of the human body. However, existing strategies mainly focus on enhancing the capacity of directional water transport, complicating the preparation process and limiting the long-term durability of textiles. Herein, a skin-like fabric inspired by sweat glands was prepared in one step by patterning printed hydrophobic paste on the fabric. This skin-like fabric has achieved the desired one-way water transport index (R, 721%), air permeability of 104 mm s-1, and water vapor transmission rate (298 g m-2 h-1). More significantly, due to the strong chemical bonds between the fabric and the coating, the skin-like fabric exhibited a high weight retention of 99.4% after 400 abrasion cycles and stable performance (R, 658%) after 25 h of washing. This work proposes a reliable way to prepare high-performance fabrics with durability, which show great potential for applications in functional textiles for personal moisture management.
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Affiliation(s)
- Yanyan Lin
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaoyi Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Xianfeng Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, 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
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
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12
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Pei J, Yin K, Wu T, Wang L, Deng Q, Huang Y, Wang K, Arnusch CJ. Multifunctional polyimide-based femtosecond laser micro/nanostructured films with triple Janus properties. NANOSCALE 2023; 15:15708-15716. [PMID: 37728408 DOI: 10.1039/d3nr03701k] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Flexible multifunctional composite films in which opposing surfaces have two or more distinct physical properties are highly applicable for wearable electronic devices, electrical power systems and biomedical engineering. However, fabrication of such "Janus" films can be time consuming, complex or economically not feasible. In this work, Janus polyimide (PI) films were prepared by femtosecond laser direct writing technology, which generated a honeycomb porous structure (HPS) on one side and a lawn-like structure (LLS) on the other. Deposition of silver nanowires (AGNWs) by drop coating on the LLS side (AGNWs@LLS) resulted in a film in which each face possessed highly distinct triple properties. The HPS side was superhydrophobic with a water contact angle (WCA) of ∼153.3° and electrically non-conductive, while the AGNWs@LLS side was superhydrophilic (WCA ∼7.8°) and highly conductive (∼3.8 Ω). Moreover, the AGNWs@LLS face showed ultra-low thermal radiation performance, almost reaching saturation. On a heating table at ∼100 °C, the temperature of the AGNWs@LLS side remained at ∼44.5 °C, while the HPS side exhibited a temperature of ∼93.9 °C. This "triple Janus film" and lasing techniques developed might be useful for designing new materials for the integration and miniaturization of multifunctional electronic equipment.
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Affiliation(s)
- Jiaqing Pei
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
| | - Kai Yin
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Tingni Wu
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
| | - Lingxiao Wang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
| | - Qinwen Deng
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
| | - Yin Huang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, China.
| | - Kai Wang
- School of Electrical Engineering, Weihai Innovation Research Institute, Qingdao University, Qingdao 266000, China
| | - Christopher J Arnusch
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 84990, Israel
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13
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Liang Z, Wang Q, Chu D, Naqvi MJ, Qu S, Huang J, Yao P. Aluminum-Based Heterogeneous Surface for Efficient Solar Desalination and Fog Harvesting Processed by a Picosecond Laser. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46195-46204. [PMID: 37747803 DOI: 10.1021/acsami.3c08121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Solar desalination and fog harvesting are two common ways to obtain fresh water, and both are promising methods to solve the water shortage problem. However, through either the fabrication of interfacial evaporators for solar desalination or the preparation of superwetting surfaces for fog harvesting, current methods suffer from long preparation times, high costs, and low efficiency. Herein, we report an efficient and simple method to process heterogeneous surfaces (HSs) on aluminum (Al) by picosecond laser processing combined with chemical treatment used for fog harvesting and seawater desalination. The as-prepared HS simultaneously consists of regular periodic stripe structures with superhydrophilicity and superhydrophobicity. The spacing of the superhydrophilic and superhydrophobic regions can be adjusted through the processing path. This surface has a 44% improvement in fog harvesting efficiency compared to a pristine Al sheet, which is 0.53 kg·m-2·h-1. Furthermore, it shows a high evaporation rate of 2.35 kg·m-2·h-1 under one sun irradiation with an energy efficiency of 52.39%. Such functional surfaces can be applied to obtain fresh water resources in both coastal regions and arid areas, where water mist is relatively abundant, providing reference and guidance for fresh water collection, and being a promising way to solve the water shortage problem.
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Affiliation(s)
- Zihang Liang
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- University of Michigan─Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
- Global Institute of Future Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qingwei Wang
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
| | - Dongkai Chu
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
| | - M Jahanzaib Naqvi
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
| | - Shuoshuo Qu
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
| | - Jun Huang
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
| | - Peng Yao
- Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, China
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Jinan 250061, China
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14
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Qi C, Ma X, Zhong J, Fang J, Huang Y, Deng X, Kong T, Liu Z. Facile and Programmable Capillary-Induced Assembly of Prototissues via Hanging Drop Arrays. ACS NANO 2023; 17:16787-16797. [PMID: 37639562 DOI: 10.1021/acsnano.3c03516] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
An important goal for bottom-up synthetic biology is to construct tissue-like structures from artificial cells. The key is the ability to control the assembly of the individual artificial cells. Unlike most methods resorting to external fields or sophisticated devices, inspired by the hanging drop method used for culturing spheroids of biological cells, we employ a capillary-driven approach to assemble giant unilamellar vesicles (GUVs)-based protocells into colonized prototissue arrays by means of a coverslip with patterned wettability. By spatially confining and controllably merging a mixed population of lipid-coated double-emulsion droplets that hang on a water/oil interface, an array of synthetic tissue-like constructs can be obtained. Each prototissue module in the array comprises multiple tightly packed droplet compartments where interfacial lipid bilayers are self-assembled at the interfaces both between two neighboring droplets and between the droplet and the external aqueous environment. The number, shape, and composition of the interconnected droplet compartments can be precisely controlled. Each prototissue module functions as a processer, in which fast signal transports of molecules via cell-cell and cell-environment communications have been demonstrated by molecular diffusions and cascade enzyme reactions, exhibiting the ability to be used as biochemical sensing and microreactor arrays. Our work provides a simple yet scalable and programmable method to form arrays of prototissues for synthetic biology, tissue engineering, and high-throughput assays.
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Affiliation(s)
- Cheng Qi
- Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Xudong Ma
- Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Junfeng Zhong
- Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Jiangyu Fang
- Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Yuanding Huang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Xiaokang Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
| | - Tiantian Kong
- Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, Guangdong 518000, China
- Department of Urology, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong 518000, China
| | - Zhou Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518000, China
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15
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Deng Q, Yin K, Wang L, Zhang H, Huang Q, Luo Z, He J, Duan JA. One Droplet toward Efficient Alcohol Detection Using Femtosecond Laser Textured Micro/Nanostructured Surface with Superwettability. SMALL METHODS 2023; 7:e2300290. [PMID: 37140085 DOI: 10.1002/smtd.202300290] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/19/2023] [Indexed: 05/05/2023]
Abstract
Alcohol with different concentrations is commonly used in food, industry, and medicine fields all over the world. However, current methods for detecting alcohol concentration are restricted to large sample consumption, additional senergy consuming, or complex operations. Here, inspired by superwettability of lotus leaves, a superhydrophobic and superorganophilic surface is designed on the polydimethylsiloxane (PDMS) for one droplet efficient alcohol detection, which is prepared via femtosecond laser direct writing technology. Meanwhile, the contact angles of droplets with various alcohol concentrations on the laser-treated PDMS (LTP) surface are different. Based on the above characteristic, alcohol concentration through contact angle measurement without any external energy is directly detected, which is simple and efficient. Furthermore, it is worth noting that the LTP surface remains stable wettability after 1000 water-ethanol cycles and 300 days tests in air, indicating strong surface repeatability and stability. Significantly, the LTP surface has a broad potential application in one droplet detecting alcohol concentration, fake or genuine wine, and alcohol molecules. This work provides a new strategy to fabricate a superwetting surface for efficient one droplet alcohol detection.
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Affiliation(s)
- Qinwen Deng
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Kai Yin
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Lingxiao Wang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Hao Zhang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Qiaoqiao Huang
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Zhi Luo
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Jun He
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Ji-An Duan
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, P. R. China
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16
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Wu M, Jiang L, Li X, Xiang Z, Yi P, Liu Y, Zhang L, Li X, Wang Z, Zhang X. Microheater-Integrated Microlens Array for Robust Rapid Fog Removal. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41092-41100. [PMID: 37599436 DOI: 10.1021/acsami.3c07262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
In extreme environments, fog formation on a microlens array (MLA) surface results in a device failure. One reliable solution for fog removal is to heat the surface using a microheater. However, due to the surface interference, the combination of these two microdevices remains elusive. In this study, we introduce lift-off and electroless plating into femtosecond laser processing to fabricate a microheater integrated MLA (μH-MLA) on the same substrate with high light transmittance, durability, and fog removal efficiency. Laser-induced micro-nano grooves enable the microheater to be tightly coupled with the MLA and have high heating performance, thus maintaining a stable performance for over 24 h during continuous operation as well as under long time ultrasonic vibration and mechanical friction. With a rapid response time (τ0.5) of 17 s and a high working temperature of 188 °C, the μH-MLA removed fog that covers the entire face within 14 s. Finally, we prove the use of this fabrication method in large areas and curved surface environments. This study provides a flexible, stable, and economical method to integrate micro-optical and microelectrical devices.
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Affiliation(s)
- Mengnan Wu
- School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Lan Jiang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaowei Li
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhikun Xiang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Peng Yi
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yang Liu
- Institute of Micro-Nano Optoelectronics and Terahertz Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Leyi Zhang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xibiao Li
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhi Wang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xiangyu Zhang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
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17
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Jiao Y, Hu X, Zhu Y, Guo Y, Ji J, Du Y, Wang J, Liu X, Wang W, Liu K. Dynamic Behavior of Droplet Impact on Laminar Superheated Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11925-11933. [PMID: 37566515 DOI: 10.1021/acs.langmuir.3c01905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2023]
Abstract
The impact of droplets on particles involves a wide range of complex phenomena and mechanisms, including bubble nucleation, crater formation, fluidization, and more intricate changes in the boiling regime when impacting superheated particles. In this study, we focus on droplet impact behavior on superheated laminar particles at various temperatures and define six typical characteristic patterns of a single droplet impact on superheated laminar particles, including film evaporation, bubbly boiling, immersion boiling, sputter boiling, transition boiling, and film boiling. It is worth noting that the variations of inertial force FI caused by gravity, the capillary force FC generated by the pores of the droplets, and the dewetting force by the vapor phase FV are the main contributors to different evaporation regimes. Interestingly, we find that the Leidenfrost point (LFP) of droplets on the laminar superheated particles decreases with particle size, which is related to the effect of the pore space generated between the laminar particles. Finally, the effect of temperature, particle size, and Weber number (We) on the dynamic behavior of droplet impact is revealed. Experimental results show that the instantaneous diameter of droplets is inversely proportional to the change of height, with different patterns of maximum spreading diameter and maximum bounce height at different particle sizes, while the maximum spreading velocity and maximum bounce velocity are independent of particle size. We believe the present work would provide a broader knowledge and comprehension of the droplet impact on heated particles and promote the development of the safety and productivity of industrial processes such as fluid catalytic cracking, spray drying, and spray cooling.
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Affiliation(s)
- Yunlong Jiao
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Xidong Hu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Yongqing Zhu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Yuhang Guo
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Jiawei Ji
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Yu Du
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Jiaxiang Wang
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Xiaojun Liu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Wei Wang
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
| | - Kun Liu
- Institute of Tribology, Hefei University of Technology, Hefei 230009, China
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18
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Yang S, Li M, Li C, Yan L, Li Q, Gong Q, Li Y. Droplet-Driven Self-Propelled Devices Fabricated by a Femtosecond Laser. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37469253 PMCID: PMC10401497 DOI: 10.1021/acsami.3c04339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Self-propelled autonomous devices have broad application prospects in energy conservation, environmental protection, and biomedical engineering. Nevertheless, the driving force always consumes external energy or special chemicals. Here, a novel and green droplet-driven device (DDD) consisting of superhydrophilic triangles on a superhydrophobic plate is processed only by a femtosecond laser. The water droplet flows into water along the superhydrophilic channel and forms a jet to provide driving force for the DDD, whose strength can be manipulated by changing the point angle of the triangle and the volume of the droplet. By fabricating multiple or special channels, the DDD can translate and rotate along the designed track and even carry objects. This provides a new route for the fabrication of green self-propelled autonomous devices and their applications in the fields of intelligent systems and environmental protection.
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Affiliation(s)
- Shuai Yang
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
| | - Meng Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
| | - Chu Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
| | - Linyu Yan
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
| | - Qiang Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
| | - Qihuang Gong
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- Hefei National Laboratory, Hefei 230088, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China
| | - Yan Li
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Frontiers Science Center for Nano-Optoelectronics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- Hefei National Laboratory, Hefei 230088, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China
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19
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Chomcharoen N, Muangnapoh T, Traipattanakul B, Surawathanawises K. Improvement of optical properties of AISI 304 as a solar absorber using a pulsed fiber laser. RSC Adv 2023; 13:22281-22286. [PMID: 37492503 PMCID: PMC10363960 DOI: 10.1039/d3ra03873d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/18/2023] [Indexed: 07/27/2023] Open
Abstract
Solar energy is an environmentally friendly and inexhaustible natural resource. It can be converted into thermal energy by using concentrated solar power (CSP) methods. One of the key components of CSP is a solar absorber, which absorbs concentrated solar radiation and converts it into heat. Recently, there have been many studies on enhancing the solar-to-thermal conversion efficiency of solar absorbers. In this work, a pulsed fiber laser was used to modify the surface of AISI 304 stainless steel as a solar absorbing material. By varying the energy density, surface roughness and oxide films can be formed, which affect the solar absorptance and thermal emittance of the substrate. The surface characteristics and corresponding optical properties were investigated. The surface roughness was measured to be in the range of 9-158 nm. Due to heat generated during engraving, metal surface oxidation occurs on the AISI 304 substrate, resulting in different values of solar absorptance and thermal emittance. Compared with the unmodified surface, the modified AISI 304 surfaces resulted in solar absorptance ranging from 58.57% to 91.78%, and the thermal emittance ranged from 10.56% to 32.90%. Consequently, the solar-to-thermal conversion efficiency was improved from 50.09% to 81.69%, and the technique can be used for solar absorbing applications.
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Affiliation(s)
- Narin Chomcharoen
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University Bangkok 10900 Thailand
| | - Tanyakorn Muangnapoh
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) Pathum Thani 12120 Thailand
| | - Bhawat Traipattanakul
- School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University Thailand
| | - Krissada Surawathanawises
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University Bangkok 10900 Thailand
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Yan D, Lu Y, Liu J, Chen Y, Sun J, Song J. Enhanced water transportation on a superhydrophilic serial cycloid-shaped pattern. NANOSCALE 2023. [PMID: 37387274 DOI: 10.1039/d3nr02180g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Spontaneous and directional water transportation (SDWT) is considered as an ideal water transportation method and has a great prospect in the aerospace and ship fields. Nonetheless, the existing SDWT has the limitation of a slow water transportation velocity because of its geometry structure configuration, which hinders the practical application of the SDWT. To overcome this limitation, we developed a new superhydrophilic serial cycloid-shaped pattern (SSCP) which was inspired by the micro-cavity shape of the Nepenthes. First, we experimentally found that the water transportation velocity on the SSCP was faster than that on the superhydrophilic serial wedge-shaped pattern (SSWP) and analyzed the faster water transportation mechanism. Then, the influence of the SSCP parameters on the transportation velocity was investigated by a single-factor experiment. In addition, the water transportation velocity on the SSCP was enhanced to 289 mm s-1 by combining the single-factor experiment, orthogonal optimization design, streamline junction transition optimization, and pre-wet pattern, which was the fastest in the SDWT. Moreover, the SSCP demonstrated its superior capability in long-distance water transportation, gravity resistant water transportation, heat transfer, and fog collection. This finding shows remarkable application prospects in the high-performance fluid transportation system.
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Affiliation(s)
- Defeng Yan
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Yi Lu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jinming Liu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Yang Chen
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jing Sun
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jinlong Song
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
- Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China
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21
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Song L, Chen Z, Guo J, Tao H, Lin J. Directional Drop Rebound on Adhesive-Gradient Micro-Nanostructured Surfaces Formed by a Femtosecond Laser. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37190946 DOI: 10.1021/acs.langmuir.3c00066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The dynamic behavior of droplets hitting a solid surface has received extensive attention due to its broad application prospects. Additionally, controlling the rebound behavior of impacting droplets is an important research topic. Current methods for investigating this behavior focus on the construction of a differentiated wettability surface, which is characterized by contact angle measurements, or a differentiated topography surface, which is represented by geometric height. This information allows one to obtain the nonuniform kinetic energy distribution of rebounding droplets and to realize control of rebounding droplet behavior. In this paper, femtosecond laser processing is proposed for the fabrication of an anisotropic surface with differences in adhesion, which allows for the control of impacting droplet rebound behavior. The experimental results show that the micro-nanostructure of the surface affects its adhesion. By changing the micro-nanostructure of the solid surface, the difference in surface adhesion can be controlled, thereby realizing precise control of impacting droplet rebound behavior. This study demonstrates that the micro-nanostructured surface formed by a femtosecond laser can be used to control a droplet rebound direction and landing site, which is of great significance to the development of liquid transport, microfluidic devices, and other fields.
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Affiliation(s)
- Lin Song
- School of Physics, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Zelin Chen
- School of Physics, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Jia Guo
- School of Physics, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Haiyan Tao
- School of Physics, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
- Zhongshan Institute of Changchun University of Science and Technology, Zhongshan 528637, People's Republic of China
| | - Jingquan Lin
- School of Physics, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
- Zhongshan Institute of Changchun University of Science and Technology, Zhongshan 528637, People's Republic of China
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22
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Guo S, Liu X, Guo C, Ning Y, Yang K, Yu C, Liu K, Jiang L. Bioinspired Underwater Superoleophilic Two-Dimensional Surface with Asymmetric Oleophobic Barriers for Unidirectional and Long-Distance Oil Transport. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22684-22691. [PMID: 37099287 DOI: 10.1021/acsami.3c01454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Unidirectional and long-distance liquid transport is critically important to a range of practical applications, e.g., water harvesting, microfluidics, and chemical reactions. Great efforts have been made on liquid manipulation; most of which, however, are limited in the air environment. It is still a great challenge to achieve unidirectional and long-distance oil transport in an aqueous environment. Herein, we have successfully fabricated an underwater superoleophilic two-dimensional surface (USTS) with asymmetric oleophobic barriers to arbitrarily manipulate oil in aqueous medium. The behavior of oil on USTS was carefully investigated, of which the unidirectional spreading capability was originated from the anisotropic spreading resistance resulted from the asymmetric oleophobic barriers. Accordingly, an underwater oil/water separation device has been developed, which can achieve continuous and efficient oil/water separation and further prevent the secondary pollution caused by oil volatilization.
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Affiliation(s)
- Shihao Guo
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
| | - Xixi Liu
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
| | - Changqing Guo
- China National Chemical Engineering Sixth Construction Co., Ltd, Xiang Yang 441100, P. R. China
| | - Yuzhen Ning
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
| | - Kaiyi Yang
- School of Transportation Science and Engineering, Beihang University, Beijing 102206, P. R. China
| | - Cunming Yu
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
| | - Kesong Liu
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University, Beijing 102206, P. R. China
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23
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Peng Y, Li C, Jiao Y, Zhu S, Hu Y, Xiong W, Cao Y, Li J, Wu D. Active Droplet Transport Induced by Moving Meniscus on a Slippery Magnetic Responsive Micropillar Array. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5901-5910. [PMID: 37040610 DOI: 10.1021/acs.langmuir.3c00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Intelligent droplet manipulation plays a crucial role in both scientific research and industrial technology. Inspired by nature, meniscus driving is an ingenious way to spontaneously transport droplets. However, the shortages of short-range transport and droplet coalescence limit its application. Here, an active droplet manipulation strategy based on the slippery magnetic responsive micropillar array (SMRMA) is reported. With the aid of a magnetic field, the micropillar array bends and induces the infusing oil to form a moving meniscus, which can attract nearby droplets and transport them for a long range. Significantly, clustered droplets on SMRMA can be isolated by micropillars, avoiding droplet coalescence. Moreover, through adjusting the arrangement of the micropillars of SMRMA, multi-functional droplet manipulation such as unidirectional droplet transport, multi-droplet transport, droplet mixing, and droplet screening can be achieved. This work provides a promising approach for intelligent droplet manipulation and unfolds broad application prospects in microfluidics, microchemical reaction, biomedical engineering, and other fields.
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Affiliation(s)
- Yubin Peng
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Chuanzong Li
- School of Computer and Information Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Yunlong Jiao
- Institute of Tribology, School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Suwan Zhu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Yanlei Hu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Wei Xiong
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yaoyu Cao
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Jiawen Li
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Dong Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
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24
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Li Y, Zhang Q, Wei X, Li K, Tian D, Jiang L. Curvature Adjustable Liquid Transport on Anisotropic Microstructured Elastic Film. ACS NANO 2023; 17:6036-6044. [PMID: 36920037 DOI: 10.1021/acsnano.3c00555] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Directional liquid transport is expected via adjusting chemical components, surface morphology, and external stimuli and is critical for practical applications. Although many studies have been conducted, there are still challenges to achieving real-time transformation of liquid transport direction on the material surface. Herein, we demonstrate a strategy to achieve curvature responsive anisotropic wetting on the elastic film with V-shaped prism microarray (VPM) microstructure, which can be used to control the direction of liquid transport. The results reveal that the curvature change of an elastic film can adjust the arrangement of V-shaped prisms on the elastic film. Correspondingly, the liquid wetting trend will change and even the moving direction reverses with varying arrangements of the V-shaped prisms on the elastic film. Meanwhile, surface hydrophobicity of the VPM elastic film also affects the liquid wetting trend and even shows the opposite transport direction of the liquid, which is up to the water wetting state on the VPM elastic film. Based on these results, the VPM elastic film can serve as a valve to control the liquid transport direction and is promising in the application of liquid directional harvest, chemical reaction, microfluidic, etc.
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Affiliation(s)
- Yan Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Qiuya Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Xinyu Wei
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Ke Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Dongliang Tian
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100191, P. R. China
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25
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Zhan B, Aliabadi M, Wang G, Chen ZB, Zhou WT, Stegmaier T, Konrad W, Gresser G, Kaya C, Liu Y, Han Z, Ren L. Underwater Oleophobic Electrospun Membrane with Spindle-Knotted Structured Fibers for Oil-in-Water Emulsion Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2301-2311. [PMID: 36719318 DOI: 10.1021/acs.langmuir.2c02943] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The potential of spider silk as an intriguing biological prototype for collecting water from a humid environment has attracted wide attention, and various materials with suitable structures have been engineered. Here, inspired by this phenomenon, a kind of superwetting poly(vinylidene fluoride) (PVDF) membrane with spindle-knotted structured fibers was prepared by the electrospinning method followed by oxygen plasma etching treatment. The prepared membrane presented a satisfactory separation efficiency for various oil-in-water emulsions. The cooperative effect of the special wettability property and the spindle-knot structure stimulated the emulsified oil droplets to accumulate quickly on the membrane surface. A model that explains the accumulation of emulsified oil droplets has also been developed. Furthermore, an artificial fiber comprising a micron-sized spindle-knot structure was prepared by the dip-coating method to clearly illustrate the aggregation process of the emulsified oil droplets and to verify the theoretical explanation. We hope that this study will provide new inspiration for oil/water emulsion separation techniques.
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Affiliation(s)
- Bin Zhan
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
- Weihai Institute for Bionics-Jilin University, Weihai264402, Shandong, P. R. China
| | - Maryam Aliabadi
- Competence Center Textile Chemistry, Environment & Energy, German Institutes of Textile and Fiber Research, Denkendorf73770, Germany
| | - Guoyong Wang
- Key Laboratory of Automobile Materials, Department of Materials Science and Engineering, Jilin University, Changchun130012, P. R. China
| | - Zhi-Biao Chen
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
| | - Wen-Ting Zhou
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
| | - Thomas Stegmaier
- Competence Center Textile Chemistry, Environment & Energy, German Institutes of Textile and Fiber Research, Denkendorf73770, Germany
| | - Wilfried Konrad
- Department of Geosciences, University of Tübingen, Tübingen72076, Germany
- Germany and Institute of Botany, Technical University of Dresden, Dresden01062, Germany
| | - Goetz Gresser
- Competence Center Textile Chemistry, Environment & Energy, German Institutes of Textile and Fiber Research, Denkendorf73770, Germany
| | - Cigdem Kaya
- Competence Center Textile Chemistry, Environment & Energy, German Institutes of Textile and Fiber Research, Denkendorf73770, Germany
| | - Yan Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
- Weihai Institute for Bionics-Jilin University, Weihai264402, Shandong, P. R. China
| | - Zhiwu Han
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
| | - Luquan Ren
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun130012, P. R. China
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26
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Han XC, Wang Q, Chen ZD, Zhou H, Cai Q, Han DD. Laser-reduced graphene oxide for a flexible liquid sliding sensing surface. OPTICS LETTERS 2023; 48:839-842. [PMID: 36723602 DOI: 10.1364/ol.482397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 12/29/2022] [Indexed: 06/18/2023]
Abstract
Flexible electronic skin is a flexible sensor system that imitates human skin. Recently, flexible sensors have been successfully developed. However, the droplet sliding sensing technology on a flexible electronic skin surface is still challenging. In this Letter, a flexible droplet sliding sensing surface is proposed and fabricated by laser-reduced graphene oxide (LRGO). The LRGO shows porous structures and low surface energy, which are beneficial for infusing lubricants and fabricating stable slippery surfaces. The slippery surface guarantees free sliding of droplets. The droplet sliding sensing mechanism is a combination of triboelectricity and electrostatic induction. After a NaCl droplet slides from lubricant-infused LRGO, a potential difference (∼0.2 mV) can be measured between two Ag electrodes. This study reveals considerable potential applications in intelligent robots and the medical field.
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27
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Li D, Xu C, Huang J, Guo Z. Janus Fabric with Asymmetric Wettability for Switchable Emulsion Separation and Controllable Droplets with Low Friction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1320-1329. [PMID: 36626239 DOI: 10.1021/acs.langmuir.2c03157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Superwetting surfaces have recently attracted extensive attention in oil-water emulsion separation and droplet manipulations, which are widely used in various situations ranging from wastewater treatment, to flexible electronics, to biochemical diagnosis. However, it still remains challenging to obtain asymmetric materials with high efficiency during oil-water separation. Meanwhile, excellent robustness of the superhydrophobic surface is of significance but retards the mobility of droplets due to increased lateral adhesion of small spacing between solid protrusions. Herein, a facile approach is demonstrated to obtain the excellent robustness of Janus fabrics with asymmetric wettability. As for one side of water-in-oil emulsion separation, mimicking the soft earthworm with periodically wrinkled skin, an adaptive superhydrophobic fabric was fabricated by wrapping soft wrinkled poly(dimethylsiloxane) (PDMS) polymer with a cross-linking structure on woven fabric fibers induced by Ar plasma treatment. In addition, inspired by the desert beetle's structure but with reversed wettability, the other side of the Janus fabric was constructed for treating emulsion of oil-in-water. In addition, the underwater superoleophobic surface consisting of magnetically responsive PDMS microcilia with slippery heads, which shows robustness against pH, improved water drop mobility and lowered the resistance of fluid friction similar to the intrinsic hydrophobic Salvinia molesta with additional slippery performance. Hence, we propose a novel and easy approach that optimizes enhanced emulsion separation and reduced fluid drag properties simultaneously, which actively broadens their widespread applications.
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Affiliation(s)
- Deke Li
- School of Materials Engineering, Lanzhou Institute of Technology, Lanzhou730050, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, People's Republic of China
| | - Chenggong Xu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, People's Republic of China
- University of Chinese Academy of Sciences, Beijing100049, People's Republic of China
| | - Jinxia Huang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, People's Republic of China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan430062, People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, People's Republic of China
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28
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Király N, Capková D, Gyepes R, Vargová N, Kazda T, Bednarčík J, Yudina D, Zelenka T, Čudek P, Zeleňák V, Sharma A, Meynen V, Hornebecq V, Straková Fedorková A, Almáši M. Sr(II) and Ba(II) Alkaline Earth Metal-Organic Frameworks (AE-MOFs) for Selective Gas Adsorption, Energy Storage, and Environmental Application. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:234. [PMID: 36677987 PMCID: PMC9866501 DOI: 10.3390/nano13020234] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/30/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
Two new alkaline earth metal-organic frameworks (AE-MOFs) containing Sr(II) (UPJS-15) or Ba(II) (UPJS-16) cations and extended tetrahedral linker (MTA) were synthesized and characterized in detail (UPJS stands for University of Pavol Jozef Safarik). Single-crystal X-ray analysis (SC-XRD) revealed that the materials are isostructural and, in their frameworks, one-dimensional channels are present with the size of ~11 × 10 Å2. The activation process of the compounds was studied by the combination of in situ heating infrared spectroscopy (IR), thermal analysis (TA) and in situ high-energy powder X-ray diffraction (HE-PXRD), which confirmed the stability of compounds after desolvation. The prepared compounds were investigated as adsorbents of different gases (Ar, N2, CO2, and H2). Nitrogen and argon adsorption measurements showed that UPJS-15 has SBET area of 1321 m2 g-1 (Ar) / 1250 m2 g-1 (N2), and UPJS-16 does not adsorb mentioned gases. From the environmental application, the materials were studied as CO2 adsorbents, and both compounds adsorb CO2 with a maximum capacity of 22.4 wt.% @ 0 °C; 14.7 wt.% @ 20 °C and 101 kPa for UPJS-15 and 11.5 wt.% @ 0°C; 8.4 wt.% @ 20 °C and 101 kPa for UPJS-16. According to IAST calculations, UPJS-16 shows high selectivity (50 for CO2/N2 10:90 mixture and 455 for CO2/N2 50:50 mixture) and can be applied as CO2 adsorbent from the atmosphere even at low pressures. The increased affinity of materials for CO2 was also studied by DFT modelling, which revealed that the primary adsorption sites are coordinatively unsaturated sites on metal ions, azo bonds, and phenyl rings within the MTA linker. Regarding energy storage, the materials were studied as hydrogen adsorbents, but the materials showed low H2 adsorption properties: 0.19 wt.% for UPJS-15 and 0.04 wt.% for UPJS-16 @ -196 °C and 101 kPa. The enhanced CO2/H2 selectivity could be used to scavenge carbon dioxide from hydrogen in WGS and DSR reactions. The second method of applying samples in the area of energy storage was the use of UPJS-15 as an additive in a lithium-sulfur battery. Cyclic performance at a cycling rate of 0.2 C showed an initial discharge capacity of 337 mAh g-1, which decreased smoothly to 235 mAh g-1 after 100 charge/discharge cycles.
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Affiliation(s)
- Nikolas Király
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
| | - Dominika Capková
- Department of Physical Chemistry, Faculty of Sciences, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Albertov 8, CZ-128 43 Prague, Czech Republic
| | - Nikola Vargová
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
| | - Tomáš Kazda
- Department of Electrical and Electronic Technology, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 10, CZ-616 00 Brno, Czech Republic
| | - Jozef Bednarčík
- Department of Physics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, SK-041 01 Košice, Slovakia
- Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, SK-040 01 Košice, Slovakia
| | - Daria Yudina
- Department of Physics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, SK-041 01 Košice, Slovakia
| | - Tomáš Zelenka
- Department of Chemistry, Faculty of Science, University of Ostrava, 30. Dubna 22, CZ-702 00 Ostrava, Czech Republic
| | - Pavel Čudek
- Department of Electrical and Electronic Technology, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 10, CZ-616 00 Brno, Czech Republic
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
| | - Anshu Sharma
- Department of Physics, School of Engineering & Technology, Central University of Haryana, Mahendergarh 123031, India
| | - Vera Meynen
- Laboratory of Adsorption and Catalysis, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Virginie Hornebecq
- Centre National de la Recherche Scientifique (CNRS), Matériaux Divisé, Interfaces, Réactivité, Electrochimie (MADIREL), Centre de Saint Jérôme, Aix-Marseille University, Avenue Escadrille-Normandie-Niemen, F-133 97 Marseille, France
| | - Andrea Straková Fedorková
- Department of Physical Chemistry, Faculty of Sciences, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
| | - Miroslav Almáši
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, SK-041 54 Košice, Slovakia
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29
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Liu B, Liu P, Deng K, Chen Y, Lv X, Wang C, Tian W, Tan S, Ji J. In Situ Transformation of Hierarchical FeOOH/CuO Arrays with Electro-Cleaning Capability for Oil-in-Water Emulsion Separation and Electro-Fenton Degradation of Organic Dye. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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30
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Polydopamine modified ZIF-L/sodium alginate composites as the highly efficient photothermal membrane for solar steam generation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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