Design of Lubricant Infused Surfaces

作者：Preston Daniel J.; Song Youngsup; Lu Zhengmao; Antao Dion S.; Wang Evelyn N.^*

来源：ACS Applied Materials & Interfaces, 2017, 9(48): 42383-42392.

DOI：10.1021/acsami.7b14311

• surface engineering
• slippery materials
• bioinspired surfaces
• interfacial phenomena
• soft materials
• surface energy
• fluid repellency

Lubricant infused surfaces (LIS) are a recently developed and promising approach to fluid repellency for applications in biology, microfluidics, thermal management, lab-on-a-chip, and beyond. The design of LIS has been explored in past work in terms of surface energies, which need to be determined empirically for each interface in a given system. Here, we developed an approach that predicts a priori whether an arbitrary combination of solid and lubricant will repel a given impinging fluid. This model was validated with experiments performed in our work as well as in literature and was subsequently used to develop a new framework for LIS with distinct design guidelines. Furthermore, insights gained from the model led to the experimental demonstration of LIS using uncoated high-surface-energy solids, thereby eliminating the need for unreliable low-surface-energy coatings and resulting in LIS repelling the lowest surface tension impinging fluid (butane, gamma approximate to 13 mN/m) reported to date.

• 出版日期2017-12-6
• 单位MIT