Here is where we start.

By cmotion


A great glass.

Shame the sample didn't give great signals...

This is a sample of a spin label in a new type of tube we are testing, immersed in liquid nitrogen. I was examining it for cracking after we had run some tests at -220ºC. When you 'flash freeze' samples like this, they do not turn to 'ice' as there is 'no time' for arrangement of the molecules into a crystalline lattice, instead it forms what is known as a supercooled liquid. The stuff that lets you see outside while you're inside is a good example of an everyday supercooled liquid... ;)

Frustrating that it didn't give a nice result, but back to the books to find out why.

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