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DMSE-Tetrapod

by mechadense, published

DMSE-Tetrapod by mechadense Nov 20, 2011

Featured Thing!

Description

This is a tetrapod out of sp3-carbon (which itself has tetrahedral symmetry).
The surfaces are passivated mainly with Hydrogen.

Some sorts of productive nanosystems like
nanofactories, molecular-assemblers or something in-between
will be needed to produce/"print" objects like this.

The abbreviation stands for:
-- Diamondoid Molecular Structural Element (DMSE)
which translates to:
-- very stiff and crystalline -- very small -- non active non moving -- building block

This one is meant to be used in bigger frameworks like nano-housings etc.
The strut ends are unsaturated Surface-Interfaces (Sinterface is nice).
The seven open bonds can be put together in two different ways =>
diamond structure, lonsdaleit structure & many more.


You can find more technical informations about
Mechanosynthesis & Molecular Nanotechnology in general on my website:
apm.bplaced.net/
or in the book "Nanosystems" written by Eric Drexler.


Titlepicture made with:
QuteMolX, v.0.5.1, Nanorex, Inc., nanorex.com, 2010.
qutemol.sourceforge.net/
Structure generated with:
NanoEngineer-1, Nanorex, Inc., nanorex.com, 2010.

And the paper that presented QuteMol:
Marco Tarini, Paolo Cignoni, Claudio Montani: Ambient Occlusion and Edge Cueing for Enhancing Real Time Molecular Visualization, IEEE Transactions on Visualization and Computer Graphics, Volume 12, Issue 5, Pages 1237-1244, 2006, ISSN: 1077-2626

ps:
Somewhat related to this is one of the simplest possible structurally usable 2D fractals: thingiverse.com/thing:14023 .
Extruded this would form some spongy hexagonal tube structure.

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License

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Instructions

Quick: shapeways.com/model/386826/


To create & convert such models for 3D printing:
You'll need:
*) Nanoengineer-1 (http://www.nanoengineer-1.com/content/)
Alternative Sources:
sourceforge.net/projects/moleculardynami/files/NanoEngineer/
diyhpl.us/~bryan/irc/nanoengineer/snapshots/
*) Blender(2.49b!!) & Plugin:
malte-reimold.de/blender/pdb2blend.html

#####
*) Create something in Nanoengineer-1 &export it as *.pdb
#####
*)
EITHER
Load the pdb2blend script directly from the creators site
malte-reimold.de/blender/pdb2blend.html
Credit goes to Malte Reimold!

OR (RECOMMENDED)
Use the version that I've slightly modified (included below)
-) brighter atom colors - suitable for 3d printing
-) changed atom radii a bit
-) rectified the double-tabs to single-tabs on line 633 & line 700
[ still not working for newer blender versions :( ]
blenderartists.org/forum/showthread.php?233937-TabError-pdb2blend

OR edit it yourself
#####

*) Right click on "pdb2blend12.blend" and click on "open with" -> "blender.app (2.49b)" (mac)
*) Right click on python script -> choose "Execute Script" from the context-menue

For maximal succesrate use following settings:
Select: Balls
Atom Scale: 2.04
Atom Sum: 0
Atom Refinement: 10 (!!)
Stick thickness: 0 (irrelevant)
Stick refinement: 4 (irrelevant)
Low atom refinement means low probability of collinear model edges (baaaad in *.stl's)

A hunk of unshaded Atoms will appear.
*) right click on the hunk
*) Select all: Apple+A (possibly twice, why?)
*) Join Atoms: Ctrl+J
*) export as *.wrl / *.x3d / *.stl
*) print with printing service in color or on home printer in monochrome

It would be great to remove the useless internal structures without loosing the color information.
Does someone know how to do this?
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