Stability of Surface-Immobilized Lubricant Interfaces under Flow

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Stability of Surface-Immobilized Lubricant Interfaces under Flow

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Title: Stability of Surface-Immobilized Lubricant Interfaces under Flow
Author: Howell, Caitlin; Vu, Thy L.; Johnson, Christopher; Hou, Xu; Ahanotu, Onyemaechi; Alvarenga, Jack; Leslie, Daniel; Uzun, Oktay; Waterhouse, Anna; Kim, Philseok; Super, Michael; Aizenberg, Michael; Ingber, Donald Elliot; Aizenberg, Joanna

Note: Order does not necessarily reflect citation order of authors.

Citation: Howell, Caitlin, Thy L. Vu, Christopher P. Johnson, Xu Hou, Onye Ahanotu, Jack Alvarenga, Daniel C. Leslie, et al. 2015. Stability of Surface-Immobilized Lubricant Interfaces Under Flow. Chem. Mater. 27, no. 5: 1792–1800. doi:10.1021/cm504652g.
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Abstract: The stability and longevity of surface-stabilized lubricant layers is a critical question in their application as low- and nonfouling slippery surface treatments in both industry and medicine. Here, we investigate lubricant loss from surfaces under flow in water using both quantitative analysis and visualization, testing the effects of underlying surface type (nanostructured versus flat), as well as flow rate in the physiologically relevant range, lubricant type, and time. We find lubricant losses on the order of only ng/cm2 in a closed system, indicating that these interfaces are relatively stable under the flow conditions tested. No notable differences emerged between surface type, flow rate, lubricant type, or time. However, exposure of the lubricant layers to an air/water interface did significantly increase the amount of lubricant removed from the surface, leading to disruption of the layer. These results may help in the development and design of materials using surface-immobilized lubricant interfaces for repellency under flow conditions.
Published Version: doi:10.1021/cm504652g
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27663227
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