Feichen Yang

6 Questions 7 Answers 0 Followers

Questions related from Feichen Yang

[rheology] What should the normal force be, when I'm running oscillatory tests in rheology?

Hi all, I'm testing the viscoelasticity of some gels with oscillatory tests (oscillation with strain sweep and frequency sweep). I am wondering what the normal force (the force that's compressing...

22 March 2021 3,890 3 View

What are some hydrogels that are stable under high pH (>10)?

Hi all, I've been working on a hydrogel that are used to release something that's only stable in a pH > 10. I'm looking at cyclodextrin-PEG based hydrogels, and I'm wondering if there's other...

04 August 2020 833 4 View

How can i image hydrogel particles?

Hi all, I'm trying to observe the wear particles I get from my hydrogel samples, but they are small and transparent, making it hard to see under microscope. How would you guys do it? Thank you!

07 November 2019 3,619 3 View

Tafel slope, does specific surface area affect it?

Hi all, I'm working on OER. I found that with my material (a high surface area electrode), the Tafel slope is much smaller than a low surface area electrode with the same surface. Is that normal?...

27 September 2018 6,443 3 View

The pressure drop of my porous media keeps increasing, why?

Hi y'all, I was trying to push water through a piece of porous media. I was measuring the pressure drop of it under a constant flow rate, and saw that the pressure drop kept increasing over time....

12 July 2018 1,095 18 View

How do I dissolve the iron from Ni-Fe alloy?

Hi all, I have a nickel-iron alloy wire with about 5% iron. I want to get rid of the iron, at least from the surface, without completely dissolving the alloy. How do I do that? I'm currently...

01 January 1970 3,369 2 View