The printer for the smallest details - Miniature components from 3D printer

Based on the provided excerpt, the article highlights UpNano’s 3D printer capability to fabricate miniature components with features so fine they are invisible to the naked eye and even strong optical microscopes, with the smallest structures only visible under a scanning electron microscope—underscoring true micro/nanoscale 3D printing precision.

Which applications do you think will benefit most from parts this small (e.g., microfluidics, medical devices, optics), and what do you see as the biggest hurdles to scaling it (inspection, throughput, or materials)?