Etching small patterns in Glass

There is an youtube video[1] by the excellent channel Huygens Optics which goes through trying to make a microscopic tesla valve. The valve does not work as a checkvalve (it is sufficiently small that surface tension and all that work differently than in a macroscopic system), but the author argues that it did satisfy the real goal of being a tesla valve -- which is to look sexy and high tech. [1] [VIDEO]

For a fun visual demonstration, check out nighthawkinlight's video where he runs a flamefront through one -- [LINK] Also seconding the Huygen's optics video osamagirl69 already posted below -- [VIDEO]

I read that, then I saw this guys youtube channel: [VIDEO] on the bright side I've found something I have not been desensitized to no matter how many time I've watched it.

[LINK] Seems like it would work beautifully. What would be cool is to make a logic-gate-tesla-valve-micro-hydraulic computer? -- The video on micro etching glass with HF is highly informative on this post... he talks about etching tesla valves at the end... [LINK] <-- 30 microns long with channel width of 4 microns via etched glass... [LINK] [VIDEO] -- So I wonder what resolution would be possible via the 3d version. What would be really interesting to see with this method would be to make a blend of a spiral-screw with the tesla valves to climb or control vertical rates of flow. --- Since this process can print in ceramics, I wonder if the can effectively make a "super-conductive-nano-wire with spiraling interconnected bucky-ball-shaped lattice of particles"