Noah Eckman's Avatar

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.

36 Followers  |  74 Following  |  11 Posts  |  Joined: 15.08.2024  |  1.8385

Latest posts by neckman.bsky.social on Bluesky


CHATGPT: I understand where you're coming from. You worked really hard to get here, and now it's time to enjoy the fruit of your labors.

ISILDUR: So I should keep it? Elrond says I shouldn't

CHATGPT: The ring is precious. Sometimes friends don't have your best interests at heart.

ISILDUR: true

06.10.2025 13:58 β€” πŸ‘ 10901    πŸ” 3090    πŸ’¬ 39    πŸ“Œ 40

Cisplatin: "am I a joke to you?"

03.09.2025 17:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Ultrahigh-concentration biologic therapeutics enabled by spray drying with a glassy surfactant excipient A copolymer excipient enables stable, ultrahigh-concentration protein formulations for subcutaneous injection.

Spray-dried microparticles with a stabilizing polymer excipient enable ultra-high protein concentration therapeutics for subcutaneous injection, and could expand home use of these critical pharmaceuticals.

Learn more in #ScienceTranslationalMedicine: https://scim.ag/4fVabSg

25.08.2025 18:00 β€” πŸ‘ 25    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
snap cuts, growing to 35% by 2034

snap cuts, growing to 35% by 2034

chip and medicaid cuts growing to 12-14% by 2034

chip and medicaid cuts growing to 12-14% by 2034

Cost estimate of the House-passed "Big Beautiful Bill" is out

It'd be the largest cut to Medicaid+CHIP and SNAP in history while still increasing deficits by $2.4 trillion due to $3.8 trillion in tax cuts

This'd be the largest transfer of wealth from the poor to the rich in a single law in history

04.06.2025 14:17 β€” πŸ‘ 1960    πŸ” 1174    πŸ’¬ 62    πŸ“Œ 99
Preview
Opinion | The Tech Fantasy That Powers A.I. Is Running on Fumes (Gift Article) A.I. is just what we need in the post-fact era: less research and more predicting what we want to hear.

This piece from @tressiemcphd.bsky.social starts with a bang and just gets better and better. Gift link.

29.03.2025 18:48 β€” πŸ‘ 1593    πŸ” 624    πŸ’¬ 51    πŸ“Œ 134

Extremely grateful to all my co-authors and advisors on this paper, without whom it would not have been possible! (end)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

It turns out... yes! Cell viabilities were significantly lower for gels with stronger crosslinks (but the same stiffness!) (6/8)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

We calculated a "yielding speed" which correlated nicely with the crosslink strength. (4/8)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

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)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

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)

02.03.2025 23:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Crosslink strength governs yielding behavior in dynamically crosslinked hydrogels Yielding of dynamically crosslinked hydrogels, or the transition between a solid-like and liquid-like state, allows facile injection and utility in translational biomedical applications including deli...

What controls the viability of encapsulated cells in injectable hydrogels?

Out today in @biomatersci.rsc.org , our new paper uses rheological tools to show that yielding speed affects viability independently of stiffness! Tweetorial below:

pubs.rsc.org/en/content/a...

02.03.2025 23:25 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

There is only one lord of the Ring... and he does not share power.

24.02.2025 19:25 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Dakota for America?

23.02.2025 06:01 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
In Memory of Andy Acrivos: CEMS Alum and Titan of Chemical Engineering Andreas (Andy) Acrivos passed away on February 17, 2025. Born in Greece in 1928, Prof. Acrivos arrived at Minnesota in 1950 following undergraduate studies at Syracuse University, becoming theΒ  second...

In Memory of Andy Acrivos: University of Minnesota Alumnus and Titan of Chemical Engineering
cse.umn.edu/cems/news/me...

19.02.2025 00:37 β€” πŸ‘ 10    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

@neckman is following 20 prominent accounts