Secondary electron yield suppression using millimeter-scale pillar array and explanation of the abnormal yield–energy curve
Ye Ming1, 2, †, Feng Peng1, Wang Dan1, Song Bai-Peng3, He Yong-Ning1, ‡, Cui Wan-Zhao4
       

(a) Schematic view of pillar array and (b) photo of the printed pillar array.