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Transforming Human Life with Laser Technology
Laser treatment reduces adhesion: superhydrophobicity, superoleophobicity, and superoleophobicity
A three-layer microstructure was formed on the surface of stainless steel through simple femtosecond laser ablation. The structural surface exhibits superhydrophilicity in air and superhydrophobicity/superhydrophobicity in water. After further modification with stearic acid, the surface becomes superhydrophobic and underwater superoleophilic/superoleophilic. Through this technology, the nozzle of the needle is modified to have super wettability. When the nozzle is used to release liquids and gases, the size of the distributed water, oil droplets, and bubbles is significantly reduced. We have demonstrated that underwater superhydrophobic nozzles can distribute nanoliter volume of bubbles without reducing the nozzle diameter. It also effectively prevents liquid retention at the opening of the needle. Therefore, the reduction in droplet/bubble size and retention rate enables us to significantly improve volume accuracy and resolution during the operation and transportation of aqueous solutions and gases. Femtosecond laser induced ultra humid nozzles can be used for high-resolution liquid transfer, inkjet printing, 3D printing, pipettes, medical equipment, cell engineering, biological detection, microchemical reactors, and reducing industrial gas emissions.
Nov 09,2021
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Main Factory: Zhendong Industrial Park, Bowang Town, Bowang District, Ma'anshan City, Anhui Province, China.
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