Polymeric Nanoneedle Arrays In article number 2104828, Yaping Chen, Nicolas H. Voelcker, Roey Elnathan, and co-workers demonstrate the fabrication of relatively low-cost high throughput polymeric nanoneedles from cell culture polystyrene. The with precise geometry are imprinted directly on polystyrene petri dish via nanoimprint lithography. arrays can precisely manipulate cellular processes med...