Computational wood? Is it possible to grow electronic circuits inside living trees? Matt Cottam thinks so. In his master's thesis, he created a video describing a technique for injecting trace metals to create elaborate living circuits.
(Grow circuits in living trees)
As far as I can tell, this video does not describe prototypes, but is a design concept. Still, it's a pretty cool idea - particularly in terms of implementation - and one that has already been described in science fiction.
In his award-winning 1989 novel Hyperion, Dan Simmons describes titanic treeships that are grown to move between the stars:
The Consul remembered his first glimpse of the kilometer-long treeship as he closed for rendezvous, the treeship's details blurred by the redundant machine and erg-generated containment fields which surrounded it like a spherical mist, but its leafy bulk clearly ablaze with thousands of lights which shone softly through leaves and thin-walled environment pods, or along countless platforms, bridges command decks, stairways and bowers. Around the base of the treeship, engineering and cargo spheres clustered like oversized galls while blue and violet streamers trailed behind like ten kilometer-long roots...
(Read more about treeships)
More recently, the idea of trees that conduct information is explored in the blockbuster movie Avatar:
Peel And Stick Thin Film Solar Cells
'It turns sunlight into electricity, just like any solar power converter, but you spray it on.'- Larry Niven, 1995.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Sky City's 220 Stories Are Go
'It rested among green parklands and... stood in total isolation, a glittering block of whites and flashing windows dotted with colors.'
Robo-Raven Flapping Wing Robot Bird
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'