Fabrication of Superhydrophobic Metallic Surface by Wire Electrical Discharge Machining for Seamless Roll-to-Roll Printing

So, Jin-Young; Bae, Won‐Gyu

doi:10.3390/met8040228

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…Average Particle Size Specific Surface Area Volume Density Density Crystal Form Value 20 nm 230 m 2 /g 0.06 g/cm 3 2.4 g/cm 3 Spherical…”

Section: Parametersmentioning

confidence: 99%

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Study on the High-Efficiency Preparation of Superhydrophobic Polymer Thin Films by Continuous Micro/Nano Imprinting

Chen,

Wei,

et al. 2024

Polymers

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In order to improve the preparation efficiency, quality stability, and large-area preparation of superhydrophobic thin films, a roll-to-roll continuous micro–nano imprinting method for the efficient preparation of superhydrophobic polymer films is proposed. A wear-resistant mold roller with hierarchical microstructure is prepared by wire electrical discharge machining (WEDM). The rheological filling model is constructed for revealing the forming mechanism of superhydrophobic polymer films during continuous micro/nano imprinting. The effects of imprinting temperature, rolling speed and the surface texture size of the template on the surface texture formation rate of polymer films are analyzed. The experimental results show that, compared with other process methods, the template processed by WEDM shows excellent wear resistance. Moreover, the optimal micro/nano imprinting parameters are the mold temperature of 190 °C (corresponding film temperature of 85 ± 5 °C), rolling speed of 3 rpm and roller gap of 0.1 mm. The maximum contact angle of the polymer film is 154°. In addition, the superhydrophobic polymer thin film has been proven to have good self-cleaning and anti-icing performance.

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“…Average Particle Size Specific Surface Area Volume Density Density Crystal Form Value 20 nm 230 m 2 /g 0.06 g/cm 3 2.4 g/cm 3 Spherical…”

Section: Parametersmentioning

confidence: 99%

“…The common preparation methods for superhydrophobic polymer films mainly include UV nano imprinting, phase separation, chemical deposition method, etc. [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Study on the High-Efficiency Preparation of Superhydrophobic Polymer Thin Films by Continuous Micro/Nano Imprinting

Chen,

Wei,

et al. 2024

Polymers

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“…Electrical discharge machining (EDM) is an efficient method for micro- and nanopatterning in which the wear of tools is not a concern. For example, wire EDM was performed to fabricate roll molds [ 37 ]. However, because the wire diameter was 250 µm, the main pattern width was not nanoscale.…”

Section: Seamless Roll Mold Fabrication Techniquementioning

confidence: 99%

Thermal Nanoimprint Lithography—A Review of the Process, Mold Fabrication, and Material

Unno

Mäkelä

2023

Nanomaterials

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Micro- and nanopatterns perform unique functions and have attracted attention in various industrial fields, such as electronic devices, microfluidics, biotechnology, optics, sensors, and smart and anti-adhesion surfaces. To put fine-patterned products to practical use, low-cost patterning technology is necessary. Nanoimprint lithography (NIL) is a promising technique for high-throughput nanopattern fabrication. In particular, thermal nanoimprint lithography (T-NIL) has the advantage of employing flexible materials and eliminating chemicals and solvents. Moreover, T-NIL is particularly suitable for compostable and recyclable materials, especially when applying biobased materials for use in optics and electronics. These attributes make T-NIL an eco-friendly process. However, the processing time of normal T-NIL is longer than that of ultraviolet (UV) NIL using a UV-curable resin because the T-NIL process requires heating and cooling time. Therefore, many studies focus on improving the throughput of T-NIL. Specifically, a T-NIL process based on a roll-to-roll web system shows promise for next-generation nanopatterning techniques because it enables large-area applications with the capability to process webs several meters in width. In this review, the T-NIL process, roll mold fabrication techniques, and various materials are introduced. Moreover, metal pattern transfer techniques using a combination of nanotransfer printing, T-NIL, and a reverse offset are introduced.

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“…In particular, the roll-to-roll process, which is a potential process for mass production, was also studied [13,14]. Park et al [14] introduced a roll-to-roll process for a nanotube/ elastomer paste with high viscosity.…”

Section: Introductionmentioning

confidence: 99%

Development of a roll-to-roll hot imprinting process for superhydrophobic polytetrafluoroethylene surfaces

Moon¹,

Lee²,

Oh³

et al. 2019

J. Micromech. Microeng.

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Potential applications of superhydrophobic surfaces have attracted many researchers. Although numerous methods have been suggested to achieve superhydrophobic surfaces on various types of materials, only a few methods are suitable for process simplicity, productivity and large area applicability. In this study, we developed a roll-to-roll hot imprinting process for superhydrophobic surfaces to overcome such limitations. Hierarchical patterns were fabricated on the roll surface through wire electrical discharge machining. Through the roll-to-roll hot imprinting process using the pattern roll, the hierarchical patterns were transferred to the polytetrafluoroethylene surface. As a result, superhydrophobic surfaces with a water contact angle of 150° or more were obtained.

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Fabrication of Superhydrophobic Metallic Surface by Wire Electrical Discharge Machining for Seamless Roll-to-Roll Printing

Cited by 10 publications

References 31 publications

Study on the High-Efficiency Preparation of Superhydrophobic Polymer Thin Films by Continuous Micro/Nano Imprinting

Study on the High-Efficiency Preparation of Superhydrophobic Polymer Thin Films by Continuous Micro/Nano Imprinting

Thermal Nanoimprint Lithography—A Review of the Process, Mold Fabrication, and Material

Development of a roll-to-roll hot imprinting process for superhydrophobic polytetrafluoroethylene surfaces

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