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Microchannel and Nanofiber Array Morphology Enhanced Rapid Superspreading on Animals' Corneas
Weining Miao1,2, Shuang Zheng1, Jiajia Zhou3
1Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Advanced Materials (Deerfield Beach, Fla.)
|April 23, 2021
Summary
Researchers discovered a rapid superspreading (RSS) effect on animal corneas using microchannels and nanofibers. This breakthrough accelerates liquid spreading, enabling faster video recording and potential applications in advanced ophthalmic materials for clearer vision.
Area of Science:
- Materials Science
- Fluid Dynamics
- Biomedical Engineering
Background:
- Controlling and accelerating dynamic liquid spreading, crucial for wetting mechanisms and visual applications, remains a significant challenge.
- Existing superamphiphilic surfaces have limitations in speed and efficiency for rapid liquid spreading.
- Animal corneas exhibit a natural superspreading phenomenon that inspires new material designs.
Purpose of the Study:
- To investigate and demonstrate a rapid superspreading (RSS) effect on animal corneas.
- To elucidate the roles of microchannel and nanofiber array morphologies in achieving RSS.
- To develop an artificial RSS surface inspired by biological structures for practical applications.
Main Methods:
- Utilized a unique microchannel and nanofiber array morphology to induce and study the RSS effect.
- Analyzed the contribution of in-/out-of-plane nanocapillary forces from the nanofiber array.
- Investigated the role of the microchannel in accelerating the superspreading process.
Main Results:
- Observed an RSS effect on animal corneas with a superspreading time (ST) of 830 ms.
- Demonstrated that nanocapillary forces from the nanofiber array induce superspreading, while microchannels accelerate it.
- Fabricated an artificial RSS surface with an ST of 450 ms, significantly faster than existing technologies.
Conclusions:
- The combined microchannel and nanofiber array morphology effectively enhances rapid superspreading.
- The developed RSS surface offers a significant speed improvement over conventional superamphiphilic surfaces and natural corneas.
- The RSS effect holds great potential for applications in high-speed video monitoring and advanced ophthalmic materials to improve biocompatibility and visual clarity.
