Institute for Technology Research and Innovation, Geelong Technology Precinct, Deakin University, Waurn Ponds, Victoria, 3217, Australia.
Langmuir. 2010 Apr 6;26(7):5135-40. doi: 10.1021/la903604w.
Superhydrophobicity is highly desirable for numerous applications. Here, we report that a semierect but nonaligned boron nitride nanotube (BNNT) film showed superhydrophobicity with contact angle above 170 degrees and a small contact angle hysteresis. This superhydrophobicity was stable over a large range of drop sizes, and the measured critical transition pressure was about 10 kPa. However, the prostrate BNNT films only showed hydrophobicity. The drop retraction behavior during evaporation, the pressure effect on contact angle, the critical transition pressure, the drop impact behavior, and the self-cleaning efficiency between these two kinds of films were systematically investigated and compared.
超疏水性在许多应用中是非常理想的。在这里，我们报告说，半直立但未对齐的氮化硼纳米管（BNNT）薄膜表现出超疏水性，接触角大于 170 度，接触角滞后小。这种超疏水性在较大的液滴尺寸范围内稳定，测量的临界转变压力约为 10 kPa。然而，平卧的 BNNT 薄膜仅表现出疏水性。在蒸发过程中液滴的回缩行为、接触角对压力的影响、临界转变压力、液滴冲击行为以及这两种薄膜之间的自清洁效率都进行了系统的研究和比较。
