X-Message-Number: 20943
From: 
Date: Wed, 22 Jan 2003 13:07:57 EST
Subject: Nano and respirocytes

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Let see if I have understood something about "respirocytes": They are 
micrometer sized spherical diamond tanks able to store gazeous oxygen at high 
pressure with the help of a centrifugal pump using a 10 nanometer rotor...

First, why diamond? graphite sheet are nearly as strong and there is a well 
established technology to make them in the bulk.

Second, What is a submicrometer gas? At that scale, surface effects are 
dominant. What about using capillarity to load a cylindrical bottle made from 
a nanotube?

It seems that has been done for hydrogen, why to build atom by a atom a 
diamond structure? Diamond or not, carbon and high pressure oxygen are a 
noxious mix. Do you really would try to make such a complex, unstable, costly 
thing when fixing an ahemoglobin molecule to a carbon nanotube would do the 
same work at some $/kg?

Yvan Bozzonetti.

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