Efficient anti-frosting enabled by femtosecond laser-induced salt-philic and superhydrophobic surface

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED Applied Physics Letters Pub Date : 2024-09-18 DOI:10.1063/5.0232717

Qinwen Deng, Tingni Wu, Kai Yin, Xun Li, Lingxiao Wang, Qiaoqiao Huang, Yin Huang, Christopher J. Arnusch, Ji-An Duan

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Abstract

Frost formation is a normal phase transition phenomenon in cold climates, while it usually brings certain troubles to human lives and production. Therefore, it is of great significance to develop frost resistant materials and key technologies. Here, a salt-philic and superhydrophobic surface is designed on a PDMS substrate by femtosecond laser direct writing technology in combination with salt–ethanol–water mixtures droplet treatment. The laser-treated PDMS embedded salt (LTP-S) surface exhibits superhydrophobicity, which alone is a property that can resist the formation of frost and enables a self-cleaning effect. Meanwhile, the salt coating further enhances the frost resistance of the surface by reducing the freezing point temperature. The LTP-S surface is revealed to perform well in frosting-defrosting cycles, washing resistance, chemical corrosion resistance, heating resistance, and long-term air exposure tests as a highly efficient and stable anti-frosting surface. This work demonstrates a facile strategy to fabricate a salt-philic and superhydrophobic surface for efficient anti-frosting.

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飞秒激光诱导亲盐和超疏水表面实现高效防霜冻

霜冻的形成是寒冷气候下一种正常的相变现象，而它通常会给人类的生活和生产带来一定的困扰。因此，开发抗冻材料和关键技术具有重要意义。本文采用飞秒激光直写技术，结合盐-乙醇-水混合物液滴处理技术，在PDMS基底上设计了一种亲盐超疏水表面。经激光处理的 PDMS 嵌入盐（LTP-S）表面具有超疏水特性，这种特性本身就能防止霜的形成并实现自清洁效果。同时，盐涂层通过降低冰点温度进一步增强了表面的抗冻性。结果表明，LTP-S 表面在结霜-化霜循环、耐洗涤、耐化学腐蚀、耐热和长期暴露于空气中测试中表现良好，是一种高效、稳定的抗霜冻表面。这项工作展示了一种制造亲盐超疏水表面以实现高效防霜冻的简便策略。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.