Abstract
Direct Laser Writing In article number 2201641, Ryan D. Sochol and co-workers present a hybrid additive manufacturing strategy for 3D nanoprinting arrays of hollow, high-aspect-ratio microneedles at unprecedented scales. Microneedle array-mediated injections of microfluidic cargo into mouse brains yield distributed delivery over a large coverage area, holding unique promise for emerging biomedical microinjection applications such as treatments of neurological conditions.
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