Fig. 3: Comparison of stamp replication fidelity.
From: A method for large-scale implantation of 3D microdevice ensembles into brain and soft tissue
Images of microfabricated stamps along with the corresponding molded polyethylene glycol constructs depicted for the two different stamp fabrication processes (silicon wet etching on the left, 3D nanoprinted structure on the right). The stamps are displayed in the top two panels, while the corresponding polyethylene glycol needles are displayed in the bottom two panels carrying fluorescent microspheres and mounted onto supporting array structures. The interneedle separation measures 500 µm in each case
