Noah Eckman
neckman.bsky.social
Noah Eckman
@neckman.bsky.social
Hydrogels, immunotherapy, and rheology in the Appel Group at Stanford. engineer/musician/humanist. bluesky-ing from both sides of my brain.
Cisplatin: "am I a joke to you?"
September 3, 2025 at 5:58 PM
Extremely grateful to all my co-authors and advisors on this paper, without whom it would not have been possible! (end)
March 2, 2025 at 11:25 PM
This result adds a key new parameter to the design space for cell delivery technologies (in direct injection, or 3D-printing). Crosslink dynamics matter! (7/8)
March 2, 2025 at 11:25 PM
It turns out... yes! Cell viabilities were significantly lower for gels with stronger crosslinks (but the same stiffness!) (6/8)
March 2, 2025 at 11:25 PM
It was then natural to ask, does more sudden yielding affect encapsulated cells as they are being injected? More brittle yielding might introduce heterogeneities in the flow which disrupt cell membranes. (5/8)
March 2, 2025 at 11:25 PM
We calculated a "yielding speed" which correlated nicely with the crosslink strength. (4/8)
March 2, 2025 at 11:25 PM
We used techniques to extract data about the speed of the yielding transition from rheological measurements. From these, we could see that the less dynamic materials have a more brittle, or sudden transition, versus a more smooth one. (3/8)
March 2, 2025 at 11:25 PM
Dynamic hydrogels allow flexible delivery of cells, due to the ability of crosslinks to break and re-form. We analyzed three clinically relevant, dynamic gels with similar stiffness to see how changing crosslink dynamics would change the physics of the yielding transition (2/8)
March 2, 2025 at 11:25 PM
There is only one lord of the Ring... and he does not share power.
February 24, 2025 at 7:25 PM
Dakota for America?
February 23, 2025 at 6:01 AM