- 學位論文
氧化锌介面之水液珠光驅動研究
Light actuated water droplet motions on ZnO nanorods
摘要
在一個開放的系統，通過使用低溫水熱法ZnO納米棒陣列的製備。 ZnO納米棒的形態的籽晶層的厚度和pH值的強烈影響。 ZnO納米棒陣列具有不同的形態和大小進行了研究，通過掃描電子顯微鏡（SEM），和接觸角測量（CAM）。它們的表面潤濕性進行了研究就其表面形貌。 ZnO納米棒與硬脂酸（SA，碳18）反應得到的超疏水性表面。然而，ZnO納米棒的表面成為親水性後通過UV光照射。表面潤濕性的變化將導致接觸角的變化，它可以驅動液滴運動。 有兩個運動發生在這個過程中，推進運動和拉運動。拉運動發生時的液滴部分的一半UV光曝光，的霧滴會走向UV光模式。推進運動時發生的液滴分別為曝光由UV光圖案的邊緣。霧滴會遠離UV光模式。這兩項議案是受兩個因素影響：接觸角的影響和加熱。液滴的操縱來實現，通過使用這兩個因素。
並列摘要
ZnO nanorods arrays were prepared in an open system by using a low temperature hydrothermal method. The morphology of the ZnO nanorods is strongly influenced by the thickness of seed layer and pH value. ZnO nanorod arrays with different morphology and size were studied by scanning electron microscopy (SEM), and contact angle measurement (CAM). Their surface wettability were studied in relation to their surface morphologies. The superhydrophobic surface was obtained by reacting stearic acid (SA, Carbon 18) with ZnO nanorod. However, the surface of ZnO nanorod became Hydrophilic after being irradiated by UV light. The change of surface wettability will led to contact angle change which can drive droplet movement. There are two motion that occurred in this process, Pushing motion and Pulling motion. Pulling motion occurred when half of the droplet part were exposured by UV light, the droplet will move towards UV light pattern. Pushing motion occurred when the droplet were exposure by the edge of UV light pattern. The droplet will moving away from UV light pattern. These two motion were affected by two factors: contact angle effect and heating. The manipulation of droplet is achieved by using these two factors.