Paul Dalton

Cell Culture Research Engineer
Great opportunity for melt electrowriting scaffold users. In one of the most beautiful regions of the world.
www.linkedin.com/jobs/view/43...
www.VivoTex.com

Recently, we published a very nice paper with the team of @daltonlab.bsky.social on volumetric 3D printing. Check out the videos too! Now I brewed the corresponding paperbeer. A Westcoast IPA called Volumetric Vision. It turned out quite alright!

advanced.onlinelibrary.wiley.com/doi/abs/10.1...

New publication from the @daltonlab.bsky.social lab, led by Patrick Hall optimizes a unique 3-D manufacturing technique, called volumetric additive manufacturing (VAM) – which has potential applications for implants, hydrogels, and more.

Read more: knightcampus.uoregon.edu/printing-fut...

Great to work with @luxenhoferlab.bsky.social again and the Lindberg Lab at Knight Campus, who are always great partners.

an VAM hydrogel chain that was printed and then manipulated onto some hooks.

a model of the classic DNA structure

a dodecahedron lattice structure

A "hot air balloon" filled with air and at the water/air interface

..with some extra figures. Check out the Supporting Videos, as there are several interesting ones there!

Have been a fanboy of volumetric additive manufacturing (VAM), so it is great to develop and publish this paper doi.org/10.1002/admt.... Since VAM can burn through bioresins, we wanted to develop a low-cost, easy to make formulation with good resolutions and visualization. Enjoy!

....importantly, this discovery of geometric design would not have been possible without Ievgenii Liashenko and Andrei Hrynevich.

...there is much more to this - it allows self correction of inherent defects for sinusoidal fiber printing and gives control to make new shapes for many applications.

..it also allows branching and recombination of MEW fiber walls which also effects the mechanics.....you might see a boat, but I also see a hinge...

..so this subtle control of fiber-on-fiber placement can have a substantial effect on its mechanical properties. For instance this candy-cane colored image shows three types of walls - vertical, inwards tilting and outwards tilting so it stretches differently in each direction..

...there is resistance to doing this due to an "auto-focusing" effect by the electric field, but layer-by-layer shifts in the printing path lets you tilt the fiber walls...

With a bluesky account, here is a blast from the past and a test of threads. doi.org/10.1002/adma... changes a fundamental which unlocks geometric freedom for melt electrowriting (MEW). Instead of direct-writing fibers directly on top of each other, the fiber-on-fiber position can be controlled....

Thanks for setting this up - could you please add me?

A classic melt electrowriting (MEW) video. With a nozzle-collector gap of 3.5 mm, a polycaprolactone melt is extruded to a 5.75kV charged 22G nozzle, thinning out into a fine microfiber. The jet speed is 260mm/min and although the collector speed increases, it never breaks. doi.org/10.1002/admt...

Towards industry-ready additive manufacturing: AI-enabled closed-loop control for 3D melt electrowriting - Communications Engineering Pawel Mieszczanek and colleagues design a machine learning-based approach to improve 3D printing processes based on melt electrowriting. They present a closed-loop control framework that is based on d...

We worked on "taming the jet" for some years, and here is an important milestone in MEW development. Now shown proof of principle, how can we adopt this across all systems, especially the low-cost #MEWron to make them even more powerful!
techxplore.com/news/2024-11...
www.nature.com/articles/s44...

This is an artifical full-thickness skin that was made in partnership with L'Oreal, published in 2024 here: doi.org/10.1002/adfm...
With MEW fibers providing a scaffold for the fibroblasts + an electrospun membrane as an artificial basement membrane, a high quality full-thickness model was created.

I wanted to thank my friends and hopefully interested colleagues who I nominated for the MEW group, to get things up and running. Thank you!🙏

My first share comes from alumni Dr Moatazbellah Youssef, who beautifully shows the printing resolutions of MEW. Corbion PC-12, 2.5 micron fibers, 50 micron spacing. I love this image as it shows the difference in scale - the 100 micron scale bar is about as small as one can get from melt extrusion.

go.bsky.app/LNu5ydu

Thanks! Could you please add me to the 3D printing and polymer group?

Let's start this account with some science from a fanboy - we try to increase volumetric printing resolution AND improve the cost. We did both and now have some PEGDA resins that cost 2c/print. In revision but hopefully soon to be published!

one more self nomination :-) - thanks for organizing this group!