X-Message-Number: 14343
From: "John Clark" <>
Subject: Nanotechnology
Date: Sat, 19 Aug 2000 10:51:06 -0400


In July of 1999 a molecular switch was made for the first time, but the switch 
could
only be thrown once. By November 1999 they had a switch that could be turned

on and off many times but it had to be kept close to absolute zero and stopped 
working

after a few hours. In today's issue of Science James Heath report on a molecular
switch

that works at room temperature and shown no signs of wearing out. Even better, 
you can

throw the switch with electricity or with light. Even better, not only do the 
electrical

characteristics change when the switch is thrown so does its color, from green 
to maroon.
Heath says he thinks can do better.

                   John K Clark        

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