マイクロ構造表面における凝縮挙動のESEMによる観察

（ピラー形状，サイズ，濡れ性が及ぼす影響）

抄録

Condensation phase change has received increasing attention in the past decades due to its importance implications in applications such as: electricity generation, air conditioning or water desalination, among others. The size, shape and wettability of the micro- and nano-structures present underneath the condensate have been found paramount for the effective design of condensing surfaces with enhanced heat transfer performance. More specifically, in this work we have carried out a systematic study to address the effect of micro-structure shape and wettability on the dynamics and steady state during condensation phase change at the micro-scale by making use of an Environmental Scanning Electron Microscopy. The distinctive condensation behavior when comparing square and cylindrical micro-pillars is then reported for the first time. We conclude on the importance of the micro-structure shape and wettability for the effective design of enhanced heat transfer condensation surfaces.