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The aspect ratio is height to width and we would dry etch the glass to get sharp corners since these are needed for our application.

Thank you Demon3 for your reply. I forgot to mention that we did try polydimethylsiloxane, but the posts tended to tear from surface during the durability/scratch tests. Rinsing and sonicating the PU in isopropyl alcohol removed some of the haze. We looked at the PU under a microscope and...

I am interested in etching microposts in glass with an aspect ratio of ~1-2. Can anyone tell me if these structures will be resistant to fracture or if they can be easily broken off the surface when scratched with a fingernail?

I need to mold microstructures in a thin film of material where the microstructures consist of an array of microposts that are 40um in diameter, 40-60um tall, and spaced by 80um. The structured thin film must be transparent (>90% transmission over visible wavelengths), durable, and scratch...