Re: >H FYI:NanoCAD in Java (fwd)

Anders Sandberg (
Sun, 3 Aug 1997 14:26:54 +0200 (MET DST)

On Sat, 2 Aug 1997, Hal Finney wrote:

> This is indeed a very cool program, and the Java interface works great.

Yes, it is a very nice system. Making it easily available as an
applet might be a good way to promote people to start experimenting
with molecular hacking (just as people once began with Game of Life
hacking - and look how far we got! Glider guns, universal computers,
patterns that calculate primes...)

> I entered a couple of simple structures from Nanosystems (the rod in
> figure 9.5a and a modified form of the bond bearing in 10.1). The
> energy minimization functions worked pretty well, but things did not
> come out quite right. I am no chemist, but I could see that some of the
> atomic arrangements were not as symmetric as they should be. So there
> are probably still some bugs in the software.

I have the same problem. It is quite easy to get unphysical
structures, I tried to make a methane molecule but it didn't get
tetrahedral. Maybe I'm missing something obvious with the energy

Anders Sandberg Towards Ascension!
GCS/M/S/O d++ -p+ c++++ !l u+ e++ m++ s+/+ n--- h+/* f+ g+ w++ t+ r+ !y