(186a) Stooped Nanohairs with Randomized Configuration By Flood Electron Beam Under Ambient Pressure

Research Interests: Current fabrication process for high aspect ratio nanostructures has limitations; realization of randomly stooping feature, and lack of applicability of organic materials, although they possess attractive applications, Here, we present a new fabrication process of randomly bended polymeric nanohair structure by irradiating the polymeric vertical nanohair structure with flood electron beam under ambient pressure. Also, the bending degree was controlled by increasing irradiation time. This behavior can be explained by scattering of flood electron beam. Due to air molecules, electrons are severly scattered, and collided with the hairs from random direction. These electrons causes the oxygen-assisted radiolysis of PUA which result in outgas of carbon dioxides and water and new hydrogen bonds, hence mass loss and volum shrinkage occurs. These facts are verified by fourier transform infrared spectroscopy and monte carlo simulation of electron trajectories. This noble, and simple method has promissing applicability of fabrication of nanostructured surface with random feature for diverse applications, such as antireflection and dry adhesion.

Teaching Interests: N/A