Aerographite claims title of World's Lightest Solid Material A microscope image of aerographite, which is now officially the world's lightest solid material (Image: Technical University of Hamburg) While they were each once hailed as the lightest solid material ever made, metallic microlattice and aerogel have now been moved back to second and third place (respectively), with aerographite taking the crown. Developed by a team from the Technical University of Hamburg and Germany’s University of Kiel, the material is composed of 99.99 percent air, along with a three-dimensional network of porous carbon nanotubes that were grown into each other.
The diatom Coscinodiscus wailesii has shells that are built out of several layers of silica. Pores and patterns form cylinders that absorb all light without letting any out. (Photo: Anita Fossdal/SINTEF Materials and Chemistry) A bright future – with algae
Antifouling paints are intended to keep hulls beneath the waterline free of barnacles, seaweed and other organisms, but traditional paints are also devastating on marine environments. (Photo: Colourbox) Boaters getting their pleasure craft ready for the summer season know that barnacles, algae and other marine organisms love to attach to any part of the vessel below the waterline. High-tech antifouling paint
Anti Wi-Fi Wallpaper To Go On Sale In 2013, Costs A Tad More Than Normal Ones A new type of wallpaper, which has been developed by scientists from the "institut polytechnique Grenoble INP" and the "Centre Technique du Papier", will go on sale in 2013 after a Finnish firm, Ahlstrom acquired the license. What looks like a bog standard wallpaper roll actually contains silver particles that allows it to filter out up to three different frequencies simultaneously. It is not the first time that such a technology has surfaced.
Non-glare nanotextured multifunctional glass repels water and dust Glass has a unique look - despite its clarity you can tell there is a material there by the way it reflects light, and that it isn't plastic or crystal. Glass, however, carries problems, like glare, fogging, and collects dirt. A group of MIT researchers has found a new way to create arrays of conical micron-scale surface nanotextures to produce glass that is self-cleaning, non-glare, and non-fogging. The researchers believe the nanotextured surface can be made at low enough cost to be applied to optical devices, the screens of smartphones and televisions, solar panels, car windshields and even windows in buildings.
Alcoa announces "smog-eating" architectural panels A high-magnification photo of a sand grain containing titanium dioxide in the form of rutile (Photo: Bob Richmond via Flickr) Last week that giant multinational of aluminum production Alcoa announced its new "smog-eating" architectural panels - in other words cladding stuck to a building's exterior that can remove pollutants from the surrounding air. The aluminum panels, branded Reynobond with EcoClean technology, have a titanium dioxide coating which breaks down pollutants in direct sunlight. Of course the purifying properties of titanium dioxide are well known, and have been widely applied, both in so-called self-cleaning applications, such as an experimental cotton treatment; and products such as lightbulbs that purify the air in a room. We've even seen research products to apply titanium dioxide, also known as titania, to water purification systems.
A Hong Kong company is selling 100% biodegradable fast food containers, made from waste straw left over after wheat harvesting (Photo via Shutterstock) Image Gallery (2 images) Not only are polystyrene fast food containers usually not recyclable, but they also take eons to break down in a landfill, can emit harmful compounds, and require petroleum to create. Using paper is one alternative, but Hong Kong-based company Innovasians is now offering another – 100% biodegradable containers made from waste straw left over after wheat harvesting. The straw used in the process comes from China, and would otherwise be burnt. The technology itself is Canadian. Biodegradable fast food containers made from waste straw
EBIT system promises stronger, cheaper plastic parts EBIT is based around an extrusion blow-molding platform, with an added injection-molding unit Image Gallery (3 images) Many plastic items consist of both blow-molded and injection-molded components that have been welded together. Not only does this require multiple machines and production steps, but the parts may also fail at the weld points. Spanish research center ASCAMM’s new EBIT technology, however, combines the two plastic injection techniques in one process, to efficiently create weld-free parts.
Scientist Fiddles With Spider Silk
Students design goop-filled bags to fill potholes A group of students have created a unique material that they say could be sealed in bags with water, then used to temporarily fill potholes (Photo via Shutterstock) Have you ever mixed corn starch with water? If you have, you probably noticed how it oozed like a liquid when flowing across a surface, yet hardened like a solid if you suddenly struck it. That’s because the corn starch/water mixture is what’s known as a non-Newtonian fluid – the particles it’s composed of slide past one another easily when moving slowly, but jam against each other when forced to move quickly. Recently, a group of students from Cleveland’s Case Western University encased such a fluid within sturdy bags, to create a simple product that could be used to temporarily fill potholes in roads.
Research currently underway at MIT’s Distributed Robotic Laboratory (DRL) could lead to an innovative replicative manufacturing technique with the disruptive potential equal to that of 3D printing. Imagine a sand-like material that could autonomously assemble itself into a replica of any object encased within. Incredible though this may sound, the DRL researchers have already managed to build a large scale proof-of-concept, with 10-mm cubes acting as the grains. Self-sculpting smart sand could assemble itself into solid replicas of objects
Polyurethane composite could replace steel or aluminum in some applications The diesel engine housing, made using the new composite material A consortium of German research groups has created a new sandwich-type material that they claim offers strength similar to that of steel or aluminum, yet is significantly lighter and less expensive. It consists of a honeycomb-structured paper core, with glass fiber-reinforced layers of polyurethane on the outsides.
Tomorrow's carbon fiber could be made from plastic bags Some of the carbon fiber shapes, created out of polyethylene using Oak Ridge's new technique Thanks to research currently being conducted at the U.S. Department of Energy's Oak Ridge National Laboratory, our unwanted plastic bags may one day be recycled into carbon fiber.
Piezolelectric graphene could have wide-reaching applications Scientists have succeeded in endowing graphene with yet another useful property. Already, it is the thinnest, strongest and stiffest material ever measured, while also proving to be an excellent conductor of heat and electricity. These qualities have allowed it to find use in everything from transistors to supercapacitors to anti-corrosion coatings. Now, two materials engineers from Stanford University have used computer models to show how it could also be turned into a piezoelectric material – this means that it could generate electricity when mechanically stressed, or change shape when subjected to an electric current. Graphene, for the uninitiated, consists of a flat sheet of carbon atoms, arranged in a hexagonal pattern.
Technology::Extreme Tech::March 15, 2012:: ::Email::Print Paper sensors change color from blue to pink within 30 seconds of exposure to trace amounts of the toxic gas By Larry Greenemeier Shocking Pink: An Inexpensive Test for Chemical Weapon Attacks
Just like ordinary concrete surfaces, it looks a tad dull and drag when dry … but put it in a place with condensation-producing heat, running water or natural rain and it reveals hidden decorative designs (that disappear again as it dries). Conceived by Frederik Molenschot and Susanne Happle, it is a bit like the old bathroom mirror trick – the writing, picture or pattern appears and disappears with moisture content. On a humid day you might get partial glimpses of what would be fully visible during a torrential downpour. Floral patterns and falling leaves conjure images of sidewalks and steps where organic matter fell before the poured concrete fully dried, but the possibilities beyond that are endless as well – spirals of words in your bathroom sink, interactive decor in public places, steamy subliminal messages in urban night clubs or remote saunas. Innovative Concrete Shows Secret Patterns When Wet, Hot | Designs &Ideas on Dornob - StumbleUpon
Changing the texture of plastics on demand
Flat polymer sheets bend themselves into 3D shapes - just add water
Eight awesome things to come out of a 3D printer
Paper alloy could replace plastic in laptops, gadgets
Hydrogen Takes A New Form
No assembly required for Cubify 3D printer
Have your bottle and eat it too – edible containers could be on the way
Scientists Create Lab-Grown Meat | The Onion - America's Finest News Source | American Voices
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