Via #OPG_Optica: High-aspect-ratio, ultratall silica meta-optics for high-intensity structured light opg.optica.org/optica/fullt... #StructuredLight #UltrafastLasers #Nanopillars

A scanning electron microscope image of a nanopillar array.

Remember the #nanohole array from yesterday? Well sometimes, #nanoholes are a first step into creating #nanopillars using a classic #nanofabrication trick, image conversation.