Fabrication of biomimetic anisotropic crescent-shaped microstructured surfaces by laser shock imprinting

• Autorzy: Ji Jie , Meng Kangnan , Li Pin , Shen Zongbao

Identyfikatory

DOI

10.2478/msp-2023-0039

• Języki publikacji: EN

Abstrakty

EN

The crescent-shaped microstructure bionic to the slip zone of the slippery zone of the carnivorous plant genus Nepenthes was fabricated on the surface of copper foil by laser shock imprinting (LSI). The microstructure of crescent-shaped grooves was initially fabricated on the surface of the micro-mold by etching, and then the microstructure was replicated on the surface of copper foil through plastic deformation under laser shock loading. Increasing the laser shock energy or the number of shocks can increase the degree of replication of the crescent-shaped microstructure, the height of the crescent-shaped microstructure, and the contact angle of water droplets on the surface. The wettability of the surface of the crescent microstructure is anisotropic and increases with an increase in offset distance. The anisotropy of the crescent-shaped microstructure causes the solid–liquid contact line in the direction of the bottom of the arc to become a long and approximately straight line. According to the rule that controlling LSI processing parameters can fabricate surfaces with different heights and wettability, a gradient wetting surface consisting of crescent-shaped microstructures was designed to achieve the directional spreading of droplets. By altering the distribution of crescent-shaped microstructures, a type-I flow channel with the ability to limit the spreading range of water droplets was fabricated.

Słowa kluczowe

EN

laser shock imprinting; crescent-shaped microstructure; anisotropic wettability; directional spreading of droplet; limitation of droplet spread

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2023
• Tom: Vol. 41, No. 3
• Strony: 140--158
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Ji Jie

• School of Mechanical Engineering, Jiangsu University, Zhenjiang, China

autor

Meng Kangnan

• School of Mechanical Engineering, Jiangsu University, Zhenjiang, China

autor

Li Pin

• School of Mechanical Engineering, Jiangsu University, Zhenjiang, China

autor

Shen Zongbao

• School of Mechanical Engineering, Jiangsu University, Zhenjiang, China

Bibliografia

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