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. Author manuscript; available in PMC: 2021 May 27.
Published in final edited form as: Adv Mater. 2020 Jan 16;32(9):e1903862. doi: 10.1002/adma.201903862

Figure 20.

Figure 20

Kim et al.’s flexible nanoneedle patch. A: Inverted silicon nanoneedles can be embedded into an elastomer, before a controlled cracking process is used to remove them from the surface. B: Photograph of fabricated patch (scale bar 1.5 cm). C: Scanning-electron-microscopy micrograph of embedded silicon nanoneedles, scale bar 20 μm (inset scale bar 600 nm). D: Confocal laser scanning micrograph, scale bar 30 μm. Reproduced under terms of CC BY-ND license.[133] Copyright 2018, The Authors.