X-Message-Number: 13131 Date: Sun, 23 Jan 2000 14:34:27 -0800 From: "Tim Ventura" <> Subject: Anti-Freeze Question Dear Cryonics List: Here's just a general idea that I had, hope it's not out of place (I'm a newbie)... In theory, the reason that we want "anti-freeze" in the blood isn't so much to prevent freezing as to prevent the water in our blood from taking on the customary crystalline lattice structure of ice. My idea for this week is that maybe adding an "anti-freeze" isn't really the solution--especially since nearly everything will be in some sort of solid form at the temperatures of liquid nitrogen. I know that one possibility is flash-freezing (ala' Demolition Man), which hypothetically could super-cool the blood fast enough the prevent the lattice structure from forming--although at the rate of heat transfer there may not be a cold enough substance to freeze a person that quickly. What about using ultrasound (from a generator immersed in the tank) to ensure that ice-crystals don't form in the blood? You would only need the generator during the freezing process itself, and then you could just leave it in the tank after that. Tim Ventura Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=13131