The boiling performance, represented by the heat transfer coefficient (HTC) and critical heat flux (CHF), must be enhanced because the energy demand of industrial processes that generate a lot of heat increases under extreme conditions. Surface manipulations have been used to improve boiling performance by controlling interfacial characteristics. Specifically, biphilic or superbiphilic patterned surfaces have been widely utilized to enhance HTC and CHF. However, it remains a challenging issue to improve CHF on superbiphilic surfaces with wicking phenomena due to the suppression of liquid supply in hydrophobic regions. In the present work, to investigate the mechanism and experimentally break through the limits of CHF enhancement, artificially patterned superbiphilic (SBPI) surfaces with different superhydrophobic (SHPO) area fractions were produced, and conducted pool boiling heat transfer. By artificially promoting nucleation, all SBPI surfaces demonstrated a higher HTC than homogeneous wettability surfaces. Considering dynamic wicking and bubble behaviors, the SBPI successfully broke through the CHF of homogeneous superhydrophilic surfaces. It is concluded that the non-dimensional liquid supply factor, which reflects both wicking and bubble behaviors, is essential to design structured surfaces during boiling. The results can contribute to a strategy for further improving boiling performance by controlling wettability on nanoscale interfaces.

必须提高以传热系数 (HTC) 和临界热通量 (CHF) 表示的沸腾性能，因为在极端条件下产生大量热量的工业过程的能源需求会增加。表面操作已用于通过控制界面特性来改善沸腾性能。具体而言，双亲或超双亲图案化表面已被广泛用于增强 HTC 和 CHF。然而，由于疏水区域的液体供应受到抑制，在具有芯吸现象的超双亲表面上改善 CHF 仍然是一个具有挑战性的问题。在目前的工作中，为了研究机制并通过实验突破 CHF 增强的限制，制备具有不同超疏水 (SHPO) 面积分数的人工图案化超亲水 (SBPI) 表面，并进行池沸腾传热。通过人为地促进成核，所有 SBPI 表面都表现出比均质润湿性表面更高的 HTC。考虑到动态芯吸和气泡行为，SBPI 成功突破了均匀超亲水表面的 CHF。得出的结论是，反映芯吸和气泡行为的无量纲液体供应因子对于在沸腾过程中设计结构化表面至关重要。该结果有助于通过控制纳米级界面的润湿性进一步提高沸腾性能的策略。所有 SBPI 表面都表现出比均质润湿性表面更高的 HTC。考虑到动态芯吸和气泡行为，SBPI 成功突破了均匀超亲水表面的 CHF。得出的结论是，反映芯吸和气泡行为的无量纲液体供应因子对于在沸腾过程中设计结构化表面至关重要。该结果有助于通过控制纳米级界面的润湿性进一步提高沸腾性能的策略。所有 SBPI 表面都表现出比均质润湿性表面更高的 HTC。考虑到动态芯吸和气泡行为，SBPI 成功突破了均匀超亲水表面的 CHF。得出的结论是，反映芯吸和气泡行为的无量纲液体供应因子对于在沸腾过程中设计结构化表面至关重要。该结果有助于通过控制纳米级界面的润湿性进一步提高沸腾性能的策略。对于在沸腾过程中设计结构化表面至关重要。该结果有助于通过控制纳米级界面的润湿性进一步提高沸腾性能的策略。对于在沸腾过程中设计结构化表面至关重要。该结果有助于通过控制纳米级界面的润湿性进一步提高沸腾性能的策略。