Dust Adhesion Suppression Effect by Meta-material Structure

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<p>Techniques have been developed for measuring orbital deviation by image measurement. In this method, the trajectory distortion is measured by measuring the coordinates of the center of gravity of the circle with a digital camera. However, due to the repeated train running, the surface of the recursive target for measurement becomes black due to dirt, and the position of the center of gravity of the circle cannot be accurately measured on the image. When the target becomes black, the center of gravity of the circle cannot be accurately measured on the image, so currently it needs to be cleaned about twice a month. Dirt due to the deposits is an important issue, and a technique for protecting the surface of the target from dirt is desired. In this study, we evaluated the surface effect of hydrophilic, water-repellent and metamaterial sheets on water and muddy water. Prevention is possible due to the oil repellency and dustproof effect, which leads to a reduction in maintenance work. In the near future, it aims to develop an oil-repellent and dust-proof metamaterial sheet for maintenance-free technology.</p>

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