pattern formation

from a homogeneous state to structure

morning glory

regular spatial patterns

fractal patterns

Benard Convection

BZ reaction

Orientation maps in the visual cortex

In toto embryogenesis

Imaging setup:• Stacks: 4x200 planes, spacing 1um• Imaging time for 4 views: <10seconds• Repeated every 30seconds• Total imaging time: 20hrs• Total amount of data: 8TB• 4 of 4 embryos hatched as larvae

speed: about 50-200x fasterlight exposure: reduction of 180um/2um = 90det. efficiency: between 60-95% with up to 16bit

Confocal comparison

Hox Genes Regulate Digit Patterning by Controlling the Wavelength of a Turing-Type MechanismRushikesh Sheth, Luciano Marcon, M. Félix Bastida, Marisa Junco, Laura Quintana, Randall Dahn, Marie Kmita, James Sharpe, and Maria A. RosScience 14 December 2012: 1476-1480.

nutrient

motility

1912 – 1954

activation inhibition

diffusion

the mechanism

mechanisms

• local excitation global inhibition

• diffusion of a bistable system

• Turing mechanism

mechanisms

two state models

continuous states

local excitation global inhibition

diffusion driven mechanisms

programming

diffusion driven mechanisms