MAS CAAD ETHZ 2010-2011 · ITA(Institute of Technology in Architecture), Faculty of Architecture ETH Zurich » reaction-diffusion http://www.mas.caad.arch.ethz.ch/mas1011 ETHZ D-ARCH CAAD MAS Sun, 05 Feb 2012 15:00:22 +0000 en-US hourly 1 http://wordpress.org/?v=4.1 M2:W2(Nervous System): Final Assignment http://www.mas.caad.arch.ethz.ch/mas1011/?p=782 http://www.mas.caad.arch.ethz.ch/mas1011/?p=782#comments Sun, 14 Nov 2010 18:57:34 +0000 http://mascaadethz2010.wordpress.com/?p=782 We had to design three 3d-printable cups using reaction diffusion.The three designs had to be substantially different from each other.The maximum dimensions of each cup were 6x6x8cm. The minimum wall thickness is 1.6mm . Possible ways to make a 3d-printable cup : time extrusion sketch,3d reaction-diffusion sketch, mesh based reaction diffusion.To generate a cup shape with these methods we had to find the ways to constrain our reaction to a cup-like shape  for instance: changing f,K through space and/or time,changing the diffusion rates through space and/or time,changing the initial conditions,remove concentration in certain locations to create a void,distort a RD mesh.

STUDENT WORKS

Jesper Thøger Christensen

Final task of the workshop with Nervous System was to design three 3d-printable cups using reaction diffusion.I used the following 3 techniques developed through the workshop to constrain the reaction to a cup-like shape. All using the Gray-Scott Reaction.

CUP #1 Ė Time ExtrusionIntroducing anisotropic diffusion of chemical u by having different diffusion rates in the x and y directions to create asymmetry.F and k parameter of reaction are changing through space.Controlling mesh generation by continuously restraining reaction-diffusion to happen within a set of law curves defined by mathematical formulas. Actually constantly controlling the concentration of the two chemicals to create void or solid.

CUP #2 Ė 3D Setting up an initial concentration of the two chemicals within a box to start the reaction-diffusion.Diffusion of chemical V is fixed. But the diffusion rate of chemical U changes through space so that it diffuses 2 times faster than V in the X and Y direction but diffuses with the same rate as V in the Z direction.

CUP #3 Ė Mesh DistortionDistorting a regular mesh of a cup by using information from a Reaction Diffusion simulation to modulate the mesh.Diffusion rate of chemical U is 4 times faster than chemical V3 cups are generated by using different parameters for F and k in the equation of the Gray-Scott Reaction

Magda Osinska

Agata Muszynska

Hideaki Takenaga

Nikola Marincic

These three projects conclude the workshop with Nervous System. The final assignment was about making an industrial product (cup) using forementioned processes. First design is a cup, where the RD on a 3D mesh object is used for forming the outher shell of a cup. For the second and third design RD processes growing in 3D were used to make a different rounded shapes. These specific shapes were based on the specific RD parameters that were chosen because they give the rounded half closed forms – suitable for storing things. Second design is a combination of an aquarium and flower vase, and the third design is a spatial instalation that shows the creative potential of using these volatile processes.




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M2:W2(Nervous System):Reaction-Diffusion http://www.mas.caad.arch.ethz.ch/mas1011/?p=459 http://www.mas.caad.arch.ethz.ch/mas1011/?p=459#comments Fri, 12 Nov 2010 13:50:36 +0000 http://mascaadethz2010.wordpress.com/?p=459 10:00-12:00 | Intro to  Reaction-Diffusion:differentation How can an identical set of genetic instructions produce different types of cells? morphogenesis how can cells form ordered structures? growth how do our cells know when to stop dividing and when to die?

13:00-15:00 | Explore Reaction-Diffusion as a form making system. What is the space of forms that it can create? what are the potential applications of this set of systems?

* Useful Links

http://n-e-r-v-o-u-s.com/

http://n-e-r-v-o-u-s.com/education/simulation/ethworkshop.php

http://mrob.com/pub/comp/xmorphia/

http://toxiclibs.org/

http://www.openprocessing.org/

openprocessing.org/visuals/?visualID=15938

openprocessing.org/visuals/?visualID=15908

Click here to view the embedded video.

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