A group at Saudi Arabia's King Abdulla University of Science and Technology have developed a new carbon-nanotube-based material that absorbs 98 to 99 percent of light between 400 and 1,400nm, from all angles, making even blacker than Rice University's 2008 none-more-black, Boston and Duke's 2008 none-more-black and Leiden University's 2009 none-more-black. That's pretty fucking black.
Read the rest
Microlattice is "a lattice of interconnected hollow tubes with a wall thickness of 100 nanometers, 1,000 times thinner than a human hair." It's made from nickel and is 99.99% air. As a result, it's very light. Here's a video that demonstrates its properties and discusses its potential use in structural reinforcement and shock absorption.
[via] Read the rest
MIT researchers and Google-owned Boston Dynamics developed a new wax-and-foam material that can shift between hard and soft states as a basis for future "squishy robots." Read the rest
The spacesuit that Neil Armstrong wore when he stepped onto the moon was constructed by a bra manufacturer in Dover, Delaware. Smithsonian magazine tells the history of the Apollo suit:
For the suit’s creator, the International Latex Corporation in Dover, Delaware, the toughest challenge was to contain the pressure necessary to support life (about 3.75 pounds per square inch of pure oxygen), while maintaining enough flexibility to afford freedom of motion. A division of the company that manufactured Playtex bras and girdles, ILC had engineers who understood a thing or two about rubber garments. They invented a bellowslike joint called a convolute out of neoprene reinforced with nylon tricot that allowed an astronaut to bend at the shoulders, elbows, knees, hips and ankles with relatively little effort. Steel aircraft cables were used throughout the suit to absorb tension forces and help maintain its shape under pressure.
"Neil Armstrong’s Spacesuit Was Made by a Bra Manufacturer" Read the rest
The iceberg wasn't the only thing that took down the Titanic, explains Yale University materials scientist Anissa Ramirez. Instead, cold temperatures in the icy North Atlantic changed the behavior of the materials that made up the boat — changes that reduced the ocean liner's ability to withstand a head-on iceberg collision.
Check out more Anissa Ramirez science videos Read the rest
This morning, Marketplace Tech Report had a story on a new cellulose-based building material that could be made by genetically engineered bacteria — altered versions of the bacteria that naturally make stuff like kombucha. This tech sounds like it's got a long way to go from laboratory to the real world, but if they can perfect the process and make it large enough quantities, what you'd end up with a strong, inexpensive goop that could be used to build everything from medical dressings, to digital paper, to spaceships. Yes, you could theoretically use this stuff to make rocket casings, according to R. Malcolm Brown, Jr.
, a professor of cell biology at UT Austin. And if you can build a rocket from this stuff, you could also break the same material back down into an edible, high-fiber foodstuff. Read the rest
It's been a good week for pedantry
. In a guest blog post at Scientific American, Kyle Hill discusses the durability of spaceship windows — both in the real world, and in Joss Whedon's movie Serenity
. Spaceship windows have to be incredibly tough, because even tiny chips of paint become dangerous projectiles in space. But how would they stand up to frontal attack by a spear?
Physics has the answers. Read the rest
Stewart Brand sums up Susan Freinkel's Long Now talk: "What Common Objects Used to Be Made Of," a history of the world before plastic:
Read the rest
“Bakelite was invented in 1907 to replace the beetle excretion called shellac (“It took 16,000 beetles six months to make a pound of shellac.”), and was first used to insulate eletrical wiring. Soon there were sturdy Bakelite radios, telephones, ashtrays, and a thousand other things. The technology democratized consumption, because mass production made former luxury items cheap and attractive. The 1920s and ‘30s were a golden age of plastic innovation, with companies like Dow Chemical, DuPont, and I. G. Farben creating hundreds of new varieties of plastic for thrilled consumers. Cellophane became a cult. Nylons became a cult. A plastics trade show in 1946 had 87,000 members of the public lining up to view the wonders. New fabrics came along—Orlon and Dacron—as colorful as the deluge of plastic toys—Barbie, the Frisbee, Hula hoops, and Silly Putty.
“Looking for new markets, the marketers discovered disposability—disposable cups for drink vending machines, disposable diapers (“Said to be responsible for the baby boom“), Bic lighters, soda bottles, medical syringes, and the infinite market of packaging. Americans consume 300 pounds of plastic a year. The variety of plastics we use are a problem for recycling, because they have to be sorted by hand. They all biodegrade eventually, but at varying rates. New bio-based polymers like “corn plastic” and “plant bottles” have less of a carbon footprint, but they biodegrade poorly. Meanwhile, thanks to the efficiencies of fracking, the price of natural gas feedstock is plummeting, and so is the price of plastic manufacture.
A creative agency called Murmure is kitting out its employees with concrete business cards that come with their own miniature shipping palettes. There's a scene in a William Gibson novel (I could swear it was Idoru, but I can't find it) where a Hollywood studio exec passes out business-cards screened on wafer-thin slices of marble, each in its own velveteen slipcase. These (which come with their own little paper boxes) are a nice second, though not nearly so keen as those fictional bad boys.
Concrete Business Cards
Read the rest
Materials scientist Debbie Chacra writes about "peak plastic" -- the moment at which our ability to make plastic (which is made from oil) begins to decline. As Debbie points out, our material world is made of plastic, and it's hard to imagine a post-plastics life.
Plastic is more than just water bottles and Tupperware. If you’re indoors, look around. There’s a good bet that much of what’s in your field of view is made of plastic. Paint. Carpeting. Upholstery. The finish on a wood floor. Veneer on furniture. And that’s before you go into your kitchen, or bathroom, and never mind a subway car or a hospital (disposable, sterile medical supplies, anyone?). Plastic is so ubiquitous that it’s almost invisible...
There’ll likely still be applications that really need petroplastic, so landfills will become goldmines. The characteristic drawback of plastic, its stubborn resistance to degradation (‘this plastic bag will still be around in ten thousand years!’) will become a virtue, as it sits unchanged in anaerobic landfills waiting for us to decide that it’s worth excavating and recycling. And one day we’ll do just that–there’ll come a point when the easy, albeit expensive, way to get a particular combination of properties (formability, degradation resistance, sterilisability) will be to dig up post-consumer plastics and reuse them.
GUEST INFORMANT: Debbie Chachra
Read the rest
An architect named Michael Green believes he can make wooden skyscrapers that stand 100 storeys tall, and he's prototyping the idea with a 30-storey wooden building in Vancouver. More wooden high-rises are planned in Austria and Norway. Green uses laminated strand lumber, a glue/wood composite, and has char buffers to give it good safety in fires. He claims that his buildings can be cheaper than comparable structures made from traditional steel and concrete, and will have a smaller carbon footprint.
Wood buildings lock in carbon dioxide for the life cycle of a structure, while the manufacture of steel and concrete produces large amounts of CO2 -- the International Energy Agency (IEA) estimate that for every 10 kilos of cement created, six to nine kilos of CO2 are produced.
Green's "Tallwood" structure is designed with large panels of laminated strand lumber -- a composite made of strands of wood glued together. Other mass timber products use layers of wood fused together at right angels that making they immensely strong and able to be used as lode bearing infrastructure, walls and floors.
Despite being made of wood any worries about towering infernos should be banished, says Green, as large timber performs well in fires with a layer of char insulating the structural wood beneath.
"It may sound counter-intuitive, but performing well in a fire is something inherent in large piece of wood, that's why in forest fires the trees that survive are the largest ones," he says.
Can wooden skyscrapers transform concrete jungles? Read the rest
Combine the spike in commodity metal prices with advances in geriatric medicine and the increased trend to cremation and what do you get? A thriving trade in artificial joint harvesting and recycling. A Dutch company called OrthoMetals recycles 250 tons of scrap from cremated bodies -- cofounder Ruud Verberne notes that it takes five hips to make one kilo of metal, which fetches €12 on the scrap market.
Clark Boyd and Rob Hugh-Jones from PRI write on the BBC:
The company works by collecting the metal implants for nothing, sorting them and then selling them - taking care to see that they are melted down, rather than reused.
After deducting costs, 70-75% of the proceeds are returned to the crematoria, for spending on charitable projects.
"In the UK for example," he says. "We ask for letters from charities that have received money from the organisation we work with in the UK and we see that the amount we transferred to them has been given to charity. This is a kind of controlling system that we have..."
...Mr Verberne has no metal implants himself, but he points out his business partner's wife, who is helping sort out bits of metal at the recycling plant.
"She has two titanium hips", he says. "And she was once asked: "Isn't it strange that you know that one day your hips will run along this conveyor belt?'"
"She said, 'No, it's just a part of life. You're going to die, and I know that reusing metals is a very good thing, so it is no problem at all.'"
She added "'My mother's hip was on here too!'"
Melting down hips and knees: The afterlife of implants
Read the rest
An 83-year-old woman with a badly infected lower jaw had the entire thing replaced with a 3D printed titanium/bioceramic replica. The surgery was performed by doctors from the University of Hasselt (Belgium) in collaboration with Dutch surgeons.
The 3D printer prints titanium powder layer by layer, while a computer controlled laser ensures that the correct particles are fused together. Using 3D printing technology, less materials are needed and the production time is much shorter than traditional manufacturing. The mandible was finally given a bioceramic coating compatible with the patient's tissue by BioCeramics in Leiden. The artificial jaw weighs 107 grams, it is only 30 grams heavier than a natural jaw, but the patient can easily get used to it.
The operation was performed in June last year in the hospital in Sittard-Geleen. One day later the lady could start talking and swallowing.
83 year-old woman got 3D printed mandible
Read the rest
Ikea has announced a new cardboard shipping pallet
, which uses fiendishly clever folding to give a loading capacity of 1,650 lbs: "As Ikea uses some 10 million pallets a year, if the experiment is a success it's a good bet that other retail giants will take notice. But the thing that has analysts skeptical is that the pallets can only be used once." Read the rest
Instructables user Blightdesign has developed a method for rubberizing paper origami creations by dipping them in Plastidip, using them for Christmas tree ornaments. This HOWTO explains how to rubberize your own paper toys.
Read the rest
You can buy hardware store materials of the future from these folks: Translucent concrete, rubber glass, unwetable sand, suction cup tape, etc. They primarily sell small quantities of very innovative stuff, but will work with you if you like what you tried and want it in bulk. The materials and devices are so amazing you'll invent things just to use them.
I have used Inventables a lot. I have found them to be responsive and helpful when I have a question about a product, or when I want to get larger quantities of a sampled product for a real application. For example, when I needed some Stretch Sensing Rubber in a different diameter for a toy I was designing, and they promptly got me the size and quantities that I needed for the prototypes. When we were designing a high-volume medical device that needed a piezoelectric actuator, they put me directly in contact with the manufacturer of the material.
-- Danny Hillis
Inventables.com Read the rest
Disappearing Spoons sells kits to make your own gallium prank-teaspoons. Gallium spoons weigh nearly as much as stainless steel ones, and have a similar finish, but they dissolve in hot liquids like tea. When the tea cools, the gallium forms a lump in the cup, ready to be molded into a new prank-spoon!
The Disappearing Spoon - Boing Boing
11 students suspended for banana prank Boing Boing
Practical joke cocktails: freeze Mentos into the ice-cubes, add to ...
Read the rest