Abstract
Super-hydrophobic materials and coatings have excellent anti-fogging, self-cleaning and antibacterial capabilities, which has been appeared in both industrial manufacture and scientific research. Methods for quantitative measurement of hydrophilicity and hydrophobicity have attracted much attention. However, for the reason droplet evaporation inevitably exists, the method based on the observation of the contact angle and the force curve contacting by a droplet brings the problem of the inability of the contact angle measurement to be maintained for a long time and the measurement error. In this paper, the relationship between droplet evaporation and time in the constant contact radius (CCR) mode is studied, and a scheme of adaptive pressure regulation through the hierarchical cavity structure is proposed. Numerical calculations show that under specific conditions, the height of the droplet is reduced by 10 nm, and the time required is more than 106 s. This method is expected to be used for the measurement of solid-liquid contact mechanics with high stability for a long time.
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Funding
Research supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA16021200), National Natural Science Foundation of China (Grant No. 61925307, 61927805, 61903359, 62127811), Instrument Developing Project of the Chinese Academy of Sciences (Grant No. YJKYYQ20210050), Youth Innovation Promotion Association CAS.
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Shi, H., Shi, J., Wang, K., Tang, S., Su, C., Liu, L. (2022). Theoretical Calculation and Analysis of Microdroplet Evaporation on Micropipette Force Sensor. In: Liu, H., et al. Intelligent Robotics and Applications. ICIRA 2022. Lecture Notes in Computer Science(), vol 13458. Springer, Cham. https://doi.org/10.1007/978-3-031-13841-6_55
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DOI: https://doi.org/10.1007/978-3-031-13841-6_55
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