I spent a lot of my time in graduate school fabricating transmission diffraction...

		gtmitchell on Aug 7, 2023 \| parent \| context \| favorite \| on: Ask HN: What's the coolest physical thing you've m... I spent a lot of my time in graduate school fabricating transmission diffraction gratings using electron beam lithography. Turns out making a bunch of nanometer-scale straight metal lines one a flat surface is a lot harder than you would think.