Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
City Made Of Bone
Is there a better way to construct cities? Steel and concrete, along with their advantages, are very energy-intensive ways to build. Perhaps Nature can point the way...
Like the real things, artificial bone and eggshell are composites of proteins and minerals. In bone, the proportions of protein and mineral are roughly equal – the mineral gives bone stiffness and hardness, while the protein gives it toughness or resistance to fracture. While bones can break, it is relatively rare, and they have the benefit of being self-healing – another feature that engineers are trying to bring to biomimetic materials.
In eggshell, the ratios are different: about 95% mineral to 5% protein, but even this small amount of protein makes eggshell remarkably tough considering how thin it is.
When making the artificial bone and eggshell, the mineral components are ‘templated’ directly onto collagen, which is the most abundant protein in the animal world. “One of the interesting things is that the minerals that make up bone deposit along the collagen, and eggshell deposits outwards from the collagen, perpendicular to it,” says Oyen. “So it might even be the case that these two composites could be combined to make a lattice-type structure, which would be even stronger – there’s some interesting science there that we’d like to look into.”
In her lab, Oyen and her team have been making samples of artificial eggshell and bone via a process that could be easily scaled up – and since the process takes place at room temperature, the samples take very little energy to produce. But it may be some time before we’re living in bone and eggshell houses.
This is a similar idea to architectural coral, an idea proposed by Larry Niven in his 1968 novel A Gift From Earth. Here's how it works:
...A genetic manipulation of ordinary sea coral, it was the cheapest building material known. The only real cost was in the plastic balloon that guided the growth of the coral and enclosed the coral's special air-borne food.
The article continues by pointing out the advantages of using a natural material like timber to construct buildings; skyscrapers as tall as 14 stories have been constructed.
Wouldn't it be easier to grow them? Take a look at this article on the house trees if the Iszic. If you want to go all natural, Dr. Oren, this is the way to go.
Via The University of Cambridge; thanks to (((Æthelind))) for pointing this item out.
[Bioengineer Dr Michelle Oyen of Cambridge’s Department of Engineering] works in the field of biomimetics – literally ‘copying life’. In her lab, with funding support from the US Army Corps of Engineers, she constructs small samples of artificial bone and eggshell, which could be used as medical implants, or even be scaled up and used as low-carbon building materials.
The remnants of the shaping balloon, which gave all architectural coral buildings their telltale bulge, had been carefully scraped away...
(Read more about Larry Niven's architectural coral)
Scroll down for more stories in the same category. (Story submitted 6/14/2016)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 0 )
Related News Stories - (" Living Space ")
With Mycotecture, We'll Just Grow The Space Habitats We Need
'The only real cost was in the plastic balloon that guided the growth of the coral and enclosed the coral's special air-borne food.' - Larry Niven, 1968.
Vast Apartment Living Will Get Even More Vast
'What is your population', I asked. 'About eighty millions.' - Louis Tucker, 1929.
LiquidView Ersatz Windows, ala Philip K. Dick
'due to his bad financial situation he had given up trying to imagine that he lived on a great hill with a view...' - Philip K. Dick, 1969.
Solar House Concept Unfolds Solar Panels Like A Flower
'They are heated and air conditioned by a solar plant that tops anything... that we have today.' - Clifford Simak, 1953.
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Miss Alabama Beauty Contest Offers Different Standards
'...they moved with the ease of dandelion puffs.'
Has Musk Given Up On Full Self Driving (FSD)?
'...some bored drone pusher in a remote driving centre...'
Prufrock-3 'The Monster' Ready To Launch
Just go for it.
Drones In Vast Airborne Grids
'These pods were programmed to hang in space in a hexagonal grid pattern...'
Starship Special Edition For Lunar Shuttle
Love those special edition spaceships.
Capturing Asteroids With Nets
'...the meteor caught and halted just as a small boy catches a swift ball in his cap.'
Project Hyperion - Generation Ship Designers Needed!
'We have decided that it shall be but one ship... it must contain everything needed to take us through the generations.'
AI Welfare Position At Anthropic Filled By Human
'You’re the robopsychologist of the plant, so you’re to study the robot itself...'
Marslink Proposed By SpaceX
'It was the heart of the Solar System's communication line...'
Simple Way To Defeat AI Face Recognition
'... designed to foil facial recognition systems.'
Wood-Panelled LignoSat Launched
'The Consul remembered his first glimpse of the kilometer-long treeship...'
Laser-Beam Welding In Orbital Factories
'His contract with Space Industries required him to work summers in their orbital factory.'
'Iceberg House' Of Travis Kelce Reflects Science Fiction Of Past Century
'The basement was huge... carved deep into the rock that folded up to underlie the ridge...'
Mechazilla Arms Catch A Falling Starship, But Check Out SF Landing-ARMS
'...the rocket’s landing-arms automatically unfolded.'
A System To Defeat AI Face Recognition
'...points and patches of light... sliding all over their faces in a programmed manner that had been designed to foil facial recognition systems.'
Robot Hand Separate From Robot
'The crawling, exploring object was V-Stephen's surgeon-hand...'
