Turning industrial paints superhydrophobic via femtosecond laser surface hierarchical structuring

Martínez-Calderón, Miguel; Haase, Thomas; Novikova, Nina I.; Wells, Frederick S.; Low, Jeffery; Willmott, Geoff R.; Broderick, Neil G. R.; Aguergaray, Claude

doi:10.1016/j.porgcoat.2021.106625

Cited by 12 publications

(6 citation statements)

References 45 publications

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“…This new precision processing technology can achieve nondestructive microprocessing and improve a material's surface properties. For example, Miguel et al [66] used laser cleaning to improve the self-cleaning In the field of optics, optical materials with pyroelectric and piezoelectric symmetry can show a bulk photovoltaic effect; applying laser cleaning technology can inhibit optical damage. For instance, Kösters et al [63] used laser cleaning to clean lithium niobate crystals, which successfully reduced the number of electrons lost and prevented a refractive index change in the crystals.…”

Section: Other Applicationsmentioning

confidence: 99%

“…This new precision processing technology can achieve nondestructive microprocessing and improve a material's surface properties. For example, Miguel et al [66] used laser cleaning to improve the self-cleaning properties of painted surfaces on a galvanized stainless-steel substrate. A femtosecond laser with pulse width of 350 fs, a wavelength of 1032 nm, a pulse frequency of 300 kHz, and a pulse energy of 16 µJ was selected in this work.…”

Section: Other Applicationsmentioning

confidence: 99%

“…After the laser cleaning, particles of a controlled size were applied to the surface and then successfully removed from the surface by adjusting the roll-off angle of the cleaning sample. The surface hydrophobic process at a tilt angle of 5 degrees is shown in Figure 11 [66]. It can be regarded as an indirect cleaning method that changes the surface structure of material and reduces the adhesion force of attachments.…”

Section: Other Applicationsmentioning

confidence: 99%

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The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

Zhou

Sun²,

et al. 2023

Processes

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Laser cleaning is an advanced surface-cleaning technology that can lead to the instant evaporation and stripping of the attachments found on a substrate’s surface, such as contaminants, rust, and coatings; it uses a high-energy laser beam to irradiate the components’ surface. Compared with common surface-cleaning technologies, laser cleaning has the advantages of precision, efficiency, and controllability. In this paper, the fundamental mechanisms of laser cleaning technology are summarized in detail; these include the laser thermal ablation mechanism, the laser thermal stress mechanism, and the plasma shock wave mechanism. The operational principles, characteristics, and application range of each mechanism are discussed. Their typical applications in industry are outlined according to the differences in the substrate materials used, including metallic materials, nonmetallic materials, and semiconductor elements. This study provides a significant reference and guiding basis for researchers to further explore the fundamental mechanisms of laser cleaning, as well as various aspects of the typical industrial applications of laser cleaning.

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Section: Other Applicationsmentioning

confidence: 99%

“…This new precision processing technology can achieve nondestructive microprocessing and improve a material's surface properties. For example, Miguel et al [66] used laser cleaning to improve the self-cleaning properties of painted surfaces on a galvanized stainless-steel substrate. A femtosecond laser with pulse width of 350 fs, a wavelength of 1032 nm, a pulse frequency of 300 kHz, and a pulse energy of 16 µJ was selected in this work.…”

Section: Other Applicationsmentioning

confidence: 99%

Section: Other Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

Zhou

Sun²,

et al. 2023

Processes

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“…In nature, the upper superhydrophobic surface of a lotus leaf prevents the droplet adhesion and reduces the resistance of movement, while the lower superhydrophilic surface makes the liquid spread quickly. Inspired by nature, the artificial wettability gradient can be used to guide the flow of liquid droplets as reported. − Among them, wetting modification by simple and flexible laser processing has developed rapidly. − Here, we fabricate an efficient and environmental-friendly droplet-driven device (DDD) consisting of superhydrophilic channels on a superhydrophobic plate, which is only prepared by the femtosecond laser direct writing. When a water droplet is put on the tip of a triangular channel, it flows into the water and forms a jet to drive the devices to move in the opposite direction.…”

Section: Introductionmentioning

confidence: 99%

Droplet-Driven Self-Propelled Devices Fabricated by a Femtosecond Laser

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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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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“…Femtosecond laser sources can be integrated into CNC machines, allowing for the ablation of complex mold surfaces [30]. Moreover, controlling the laser texturing parameters allows for generating micro-and nano-scale features with the same equipment in a one-step process [31,32]. This allows for significant advantages over other technologies, such as those that rely on masks (i.e., limits on the feature size) or those requiring a clean room environment (e.g., EBM).…”

Section: Introductionmentioning

confidence: 99%

Wetting Characteristics of Laser-Ablated Hierarchical Textures Replicated by Micro Injection Molding

et al. 2023

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Texturing can be used to functionalize the surface of plastic parts and, in particular, to modify the interaction with fluids. Wetting functionalization can be used for microfluidics, medical devices, scaffolds, and more. In this research, hierarchical textures were generated on steel mold inserts using femtosecond laser ablation to transfer on plastic parts surface via injection molding. Different textures were designed to study the effects of various hierarchical geometries on the wetting behavior. The textures are designed to create wetting functionalization while avoiding high aspect ratio features, which are complex to replicate and difficult to manufacture at scale. Nano-scale ripples were generated over the micro-scale texture by creating laser-induced periodic surface structures. The textured molds were then replicated by micro-injection molding using polypropylene and poly(methyl methacrylate). The static wetting behavior was investigated on steel inserts and molded parts and compared to the theoretical values obtained from the Cassie–Baxter and Wenzel models. The experimental results showed correlations between texture design, injection molding replication, and wetting properties. The wetting behavior on the polypropylene parts followed the Cassie–Baxter model, while for PMMA, a composite wetting state of Cassie–Baxter and Wenzel was observed.

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Turning industrial paints superhydrophobic via femtosecond laser surface hierarchical structuring

Cited by 12 publications

References 45 publications

The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

The Fundamental Mechanisms of Laser Cleaning Technology and Its Typical Applications in Industry

Droplet-Driven Self-Propelled Devices Fabricated by a Femtosecond Laser

Wetting Characteristics of Laser-Ablated Hierarchical Textures Replicated by Micro Injection Molding

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