东南大学学报（自然科学版）2017，Vol.47Issue(2)：259-264,6.DOI:10.3969/j.issn.1001-0505.2017.02.011
猪笼草捕虫笼超滑表面黏附特性测量和抗黏稳定性分析
Measurement of adhesion properties and analysis of anti-adhension stability on super-slippery surfaces of nepenthes pitchers
摘要
Abstract
The micro-topography of nepenthes waxy zone surfaces was acquired by environment scanning electron microscope (ESEM).Colloid probe using hand-operated cantilever moving method was used to behave as a single seta by gluing a 15 μm silica sphere onto the probe cantilever equipped without tips.Adhesion and friction forces of the fresh waxy zone surface were measured under dry and various humid conditions using these colloid probes,and compared with those of smooth glasses and waxy zone surfaces after exposed in hot chloroform.The results show that three-dimensional wax crystals of nepenthes surface play a key role in leading to the insect slipping on these surfaces,because the structure lowers the adhesion and friction forces by reducing the contact area between the tiny sphere/seta and the surfaces.Additionally,these three-dimensional wax crystals can efficiently drive away water vapor around the contact area,thus keeping the waxy zone with an efficient and highly stable anti-adhesion under various humid conditions.The surface architecture of nepenthes waxy zones provides an excellent bionic model for the anti-adhesion design in micro-nano electromechanical systems.关键词
猪笼草/蜡质区/抗黏附/稳定性Key words
nepenthes/waxy zone/anti-adhesion/stabilization分类
机械制造引用本文复制引用
王玉娟,宋小闯,陈云飞..猪笼草捕虫笼超滑表面黏附特性测量和抗黏稳定性分析[J].东南大学学报（自然科学版）,2017,47(2):259-264,6.基金项目
国家自然科学基金资助项目(51345012). （51345012）
