Multifunctional superhydrophobic surface with dynamically controllable micro/nanostructures for droplet manipulation and friction control

Wang, Hujun; Zhang, Zhihui; Zheng, Jing; Zhao, Jie; Liang, Yunhong; Li, Xiujuan; Ren, Luquan

doi:10.1016/j.cej.2020.127944

Cited by 31 publications

(32 citation statements)

References 52 publications

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“…In contrast, the same volume of water droplet leaves the syringe and stays on the F surface. The surface of superhydrophobic materials with different wettabilities has a wide range of potential applications in droplet manipulation . The schematic representation of the surface structure is shown in Figure b.…”

Section: Resultsmentioning

confidence: 99%

“…The surface of superhydrophobic materials with different wettabilities has a wide range of potential applications in droplet manipulation. 47 The schematic representation of the surface structure is shown in Figure 3b. Due to the presence of larger micron particles on the F surface, the F surface has a larger contact area with the droplets, resulting in strong adhesion to the droplets.…”

Section: Resultsmentioning

confidence: 99%

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Asymmetric Superhydrophobic Textiles for Electromagnetic Interference Shielding, Photothermal Conversion, and Solar Water Evaporation

Pan

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Flexible and multifunctional textiles have potential applications in self-cleaning and portable electronic product applications, but the current problem that needs to be solved is to maintain their inherent breathability and flexibility while expanding other functional applications. Herein, we adopt the layer-by-layer assembly method to develop a multifunctional textile with superior asymmetric superhydrophobicity, excellent electromagnetic interference (EMI) shielding, outstanding photothermal conversion, and solar water evaporation. The synergistic effect of SiO 2 nanoparticles/poly(dimethylsiloxane) (PDMS) and 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) endows the textile with a water contact angle of 160°. MXene provides high conductivity (1200 S/m) and EMI shielding effects (36 dB) for multifunctional textiles. In addition, the multifunctional textile exhibits excellent photothermal conversion, and satisfactory solar water evaporation efficiency (80%) and rate (1.22 kg/(m 2 h)) under 1 sun. Therefore, the prepared multifunctional textile has great potential in multiscene applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Asymmetric Superhydrophobic Textiles for Electromagnetic Interference Shielding, Photothermal Conversion, and Solar Water Evaporation

Pan

Wang

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

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“…Light fields, electric fields and magnetic fields, as well as other external stimuli such as thermal fields, 34,78,107,122 pH value gradients 33,123 and mechanical vibrations 111 have been used to manipulate droplets. Banuprasad et al 124 reported on a method for rapid droplet transport over a poly (N-isopropyl acrylamide) (ii) droplet carrying on climbing movement on the bridge-like magnetic droplet microfluidic platform (MDMP), under the control of magnetic probe.…”

Section: Droplet Manipulation Strategies Under Other External Stimulimentioning

confidence: 99%

Bioinspired materials for droplet manipulation: Principles, methods and applications

Xiu

Lian

et al. 2022

Droplet

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Droplet manipulation techniques such as transport and merging have been widely used in many fields including biology, chemistry, material and energy applications. Moreover, droplet manipulation strategies have been extensively investigated and reviewed in terms of droplet placement on solid surfaces. However, less attention has been paid to the practice of droplet manipulation technology in other environments, limiting our understanding and the broadening of technology application. In this article, we provided an overview of the recent progress in controlling droplets in various situations, including droplet manipulation on a surface mediated by the passive strategy (Laplace pressure and wettability gradients) and active strategy (electric field, magnetic field, light and heat). We also presented the principle of droplet manipulation and detailed the application of bionic surfaces in droplet manipulation, and the applications and prospects of droplet manipulation technology were summarized.

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“…Even containers such as droppers, tubes, pipette guns, and so forth leave some liquid behind that must be cleaned after . Controllable and lossless droplet handling, − such as pick-up, transfer, release, and repeated use, is a basic technique for miniaturized diagnostic, , drug delivery, , microfluidic devices, , and so on, with its advantages being that it is contamination-free, has high throughput, and exhibits reduced sample/reagent consumption . Therefore, a feasible and efficient strategy to fabricate handling devices for controlled droplet manipulation is of growing importance.…”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Fast Assembly of Wettability-Finely-Tunable Superhydrophobic Surfaces for Lossless Droplet Transfer

Fan

Yan

Qian

et al. 2022

ACS Appl. Mater. Interfaces

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Rose-petal-like superhydrophobic surfaces with strong water adhesion are promising for microdroplet manipulation and lossless droplet transfer. Assembly of self-grown micropillars on shape-memory polymer sheets with their surface adhesion finely tunable was enabled using a picosecond laser microprocessing system in a simple, fast, and large-scale manner. The processing speed of the wettability-finely-tunable superhydrophobic surfaces is up to 0.5 cm2/min, around 50–100 times faster than the conventional lithography methods. By adjusting the micropillar height, diameter, and bending angle, as well as superhydrophobic chemical treatment, the contact angle and adhesive force of water droplets on the micropillar-textured surfaces can be tuned from 117.1° up to 165° and 15.4 up to 200.6 μN, respectively. Theoretical analysis suggests a well-defined wetting-state transition with respect to the micropillar size and provides a clear guideline for microstructure design for achieving a stabilized superhydrophobic region. Droplet handling devices, including liquid handling tweezers and gloves, were fabricated from the micropillar-textured surfaces, and lossless liquid transfer of various liquids among various surfaces was demonstrated using these devices. The superhydrophobic surfaces serve as a microreactor platform to perform and reveal the chemical reaction process under a space-constrained condition. The superhydrophobic surfaces with self-assembled micropillars promise great potential in the fields of lossless droplet transfer, biomedical detection, chemical engineering, and microfluidics.

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Multifunctional superhydrophobic surface with dynamically controllable micro/nanostructures for droplet manipulation and friction control

Cited by 31 publications

References 52 publications

Asymmetric Superhydrophobic Textiles for Electromagnetic Interference Shielding, Photothermal Conversion, and Solar Water Evaporation

Asymmetric Superhydrophobic Textiles for Electromagnetic Interference Shielding, Photothermal Conversion, and Solar Water Evaporation

Bioinspired materials for droplet manipulation: Principles, methods and applications

Laser-Induced Fast Assembly of Wettability-Finely-Tunable Superhydrophobic Surfaces for Lossless Droplet Transfer

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