| Affiliation: | 1. Institute of Engineering Thermophysics, Chongqing University, Chongqing, China;2. Institute of Engineering Thermophysics, Chongqing University, Chongqing, China Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China |
| Abstract: | Chemically striped surfaces have a strong ability to control the shape of droplets and even to split a droplet, which can be applied in microfluidic, printing fields and spray cooling fields. The droplet splitting behavior is affected by the number of hydrophobic stripes spanned by the droplet at its maximum spread moment, which is determined by the maximum spreading factor. In this study, an area ratio is adopted to analyze a droplet's spread on the hydrophilic and hydrophobic regions at maximum spread moment. Coupled with an energy conservation equation, an analytical model is presented to predict the maximum spread factor of a droplet on a chemically striped surface. |
