Formation of periodic superhydrophilic microstructures by infrared nanosecond laser processing of single-crystal silicon

Starinskiy, S. V.; Родионов, А. А.; Shukhov, Yuri G.; Сафонов, А. И.; Maximovskiy, Eugene; Sulyaeva, V. S.; Bulgakov, Alexander V.

doi:10.1016/j.apsusc.2020.145753

Cited by 34 publications

(7 citation statements)

References 55 publications

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“…Figure 2 c–g depict the presence of hillock and hollow structures characterized by shallow depressions surrounded by narrow protrusions. These micro-structures were a result of laser scan overlapping, which can be estimated by laser focal spot diameter, line spacing, scan speed, and repetition rate and the spot to spot seperation was listed in Table 1 [ 48 , 49 ]. The light colour regions in 2D images were non-overlapping regions.…”

Section: Resultsmentioning

confidence: 99%

Durable anti-fog micro-nano structures fabricated by laser ablation of aluminum film on resin/glass

Cui,

Teng,

Xie

et al. 2024

Discover Nano

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This study presents a technique for processing transparent glass and resin substrates using a low-cost laser marker to create a micro-nano-structured surface with exceptional anti-fog properties. The approach involved depositing an aluminum (Al) film on the transparent substrates as an absorbing layer, followed by rapid laser marker ablation. This ablation process effectively removed the majority of the Al film, resulting in the formation of hierarchical hillock-hollow micro-structures and the dispersion of Al-based nano-particles throughout the surface. The resulting structure on resin glasses demonstrated anti-fog performance even after 629 days storage in the laboratory, which marked the longest antifog record. It exhibited impressive antifog property without visible degradation for the first 9 months, which though degraded substantially afterwards. Furthermore, the micro-nano structure played a key role in reducing the contact angle of the surface. The contact angle experienced a significant reduction from a value of 64° for the control resin to 6.9° for the treated resin, while it was reduced from 44° for the control glass to 0° for the treated glass, indicating superhydrophilicity. This 0° superhydrophilic state persisted for a period of 25 days.

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Section: Resultsmentioning

confidence: 99%

Durable anti-fog micro-nano structures fabricated by laser ablation of aluminum film on resin/glass

Cui,

Teng,

Xie

et al. 2024

Discover Nano

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“…It is important to note, that advanced industrial laser systems provide currently processing rates up to 1 m 2 s −1 , thus enabling mass production of multifunctional metal, semiconductors, glasses, and polymer materials [ 32 ]. Although there is a general consensus that femtosecond lasers outperform other lasers in terms of nanostructuring capability and controllability [ 31 , 39 , 40 , 76 ], less expensive picosecond and nanosecond lasers can be also used for surface nano/microstructuring [ 77 , 78 , 79 ]. Low-cost mass production of nano/microstructured polymer and other soft materials for low-temperature HMXs can be also implemented using nanoimprinting technology, where a femtosecond laser is utilized for producing a mold and then the nano/microstructures fabricated on the mold are replicated on a soft material [ 80 , 81 ].…”

Section: Resultsmentioning

confidence: 99%

Evaporative and Wicking Functionalities at Hot Airflows of Laser Nano-/Microstructured Ti-6Al-4V Material

et al. 2023

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A novel multifunctional material with efficient wicking and evaporative functionalities was fabricated using hierarchical surface nano-/microstructuring by femtosecond laser micromachining. The created material exhibits excellent multifunctional performance. Our experiments in a wind tunnel demonstrate its good wicking and evaporative functionalities under the conditions of high-temperature airflows. An important finding of this work is the significantly enhanced evaporation rate of the created material compared with the free water surface. The obtained results provide a platform for the practical implementation of Maisotsenko-cycle cooling technologies for substantially increasing efficiency in power generation, thermal management, and other evaporation-based technologies. The developed multifunctional material demonstrates long-lasting wicking and evaporative functionalities that are resistant to degradation under high-temperature airflows, indicating its suitability for practical applications.

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“…A material chemical composition and surface micro/nanostructure affect surface wettability. Therefore, laser processing has been widely applied to prepare various surface wettability properties, including superhydrophobic, superhydrophilic, and superamphiphobic [47][48][49]. Recently, many researchers have fabricated wettability gradient surface fabric to reach directional water transfer through the laser method with low-energy-surface modification [50,51].…”

Section: Laser Processingmentioning

confidence: 99%

Review on the Development and Application of Directional Water Transport Textile Materials

Xiao

Kan

2022

Coatings

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Moisture (sweat) management in textile products is crucial to regulate human thermo-physiological comfort. Traditional hydrophilic textiles, such as cotton, can absorb sweat, but they retain it, leading to undesired wet adhesion sensation and even excessive cooling. To address such issues, the development of functional textiles with directional water transport (DWT) has garnered great deal of interest. DWT textile materials can realize directional water transport and prevent water penetration in the reverse direction, which is a great application for sweat release in daily life. In this review article, the mechanism of directional water transport is analyzed. Then, three key methods to achieve DWT performance are reviewed, including the design of the fabric structure, surface modification and electrospinning. In addition, the applications of DWT textile materials in functional clothing, electronic textiles, and wound dressing are introduced. Finally, the challenges and future development trends of DWT textile materials in the textile field are discussed.

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Formation of periodic superhydrophilic microstructures by infrared nanosecond laser processing of single-crystal silicon

Cited by 34 publications

References 55 publications

Durable anti-fog micro-nano structures fabricated by laser ablation of aluminum film on resin/glass

Durable anti-fog micro-nano structures fabricated by laser ablation of aluminum film on resin/glass

Evaporative and Wicking Functionalities at Hot Airflows of Laser Nano-/Microstructured Ti-6Al-4V Material

Review on the Development and Application of Directional Water Transport Textile Materials

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