Yeah I hear you about these big conferences. But unfortunately, people at my level gotta network...

too real!

It’s a 3D printer with 150nm resolution!

Very cool work @k-ehrmann.bsky.social !

I used to get that when I was active on Twitter. Can't win them all!

Me too! Our technology is accessible (by research lab and chemistry standards) but not thatttt accessible. Work in progress!

This tremendous effort was led by Yiming Ji, a PhD student in my group. Incredible persistence and great mastery of materials characterization. Truly a tour de force. The work was also supported by Ying Hong, a former postdoc, and Dhruv Bhandari, a summer intern who is now at Cornell.

Fin! (7/7)

There's a lot more in there so do check it out! The SI is a whopping 65 pages, the bulk of which are calculations of our part densities and also that from the literature. Density is vastly underreported in our field, so we hope that this will encourage others to report it moving forward (6/7).

To show the material, size, and geometric versatility of this technology, we made a variety of metal parts and even hard magnets! (5/7)

Some numbers to put this in context:

Average shrinkage values today: ~80%
Average density values today: ~50%

Our work:
Shrinkage values: ~20-40%
Density values: ~90%

(4/7)

With such high metal loadings, we were able to reduce the polymer-to-metal shrinkage while simultaneously increasing part density. These materials now significantly outperform the state of the art (including our previous work!) (3/7)