From MAKE: Cool Superhydrophobic Surface Demos



Both these videos are from German web retailer Innovative Materials, who apparently used to sell something called “superhydrophobic aerogel” in powder or granule form. In these videos, surfaces coated with this powder react in interesting ways to water. They seem to be sold out of the stuff, but a bit of Googling confirms that superhydrophobic aerogels do exist and can be made in many ways. Exactly what type was used in these demonstrations is unclear. [via Boing Boing]

Innovative Materials Blog: Aerogel Powder

More:
How to make water bounce

from MAKE

From The UberReview: Researchers Discover Plastic-eating Fungus


Researchers from Yale University have discovered a mushroom in the jungles of Ecuador that is able to survive on a diet of polyurethane.

The fungus, namely Pestalotiopsis microspore is able to survive by eating plastic alone and has no need for air or light. The discovery was made by students Jonathan Russell and Pria Anand, who have published their findings in Applied and Environmental Microbiology.

The pair has isolated the enzyme within P. microspore that allows it to decompose plastic; the next step will be to extract the enzyme so that it can be put to work dealing with plastic waste. Now all we need is a mushroom that can dine on cesium and we’ll be set.

[Source]

from The UberReview

From Gizmodo: Boeing’s Phantom Surveillance Drone Flies Over Battlefields for Four Days Straight

Among the many lessons the US military learned from the war in Afghanistan (beyond, of course, don’t engage in a land war in Afghanistan) is the need for continuous battlefield surveillance. To help do that work, Boeing developed the Phantom Eye UAV, a drone aircraft that can scout a theater of operations for up to four days at a time without blinking. More »
from Gizmodo

From Ars Technica: New Willow Glass is rollable and paper-thin

Corning’s new thin and bendy Willow Glass

Corning’s latest display glass technology, Willow Glass, launched Monday at a trade show in Boston. Willow Glass is glass spun extremely thin and flexible enough to roll into two-inch radius tubes, thanks to a manufacturing process similar to that used to make newsprint.

Corning, the company that makes the Gorilla Glass widely used in smartphone displays, uses roll-to-roll processes to make Willow Glass. The material is processed at temperatures of up to 500º C and rolled out over many cylinders (a rendering of the process is posted on YouTube). The result is a scratch-resistant, bendable sheet that measures 100 microns thick, about the same as a sheet of paper.

Willow Glass performs “exceptionally well” with touch sensors, so it will make a natural pairing with the curved smartphone designs that are all the rage, like the Samsung Galaxy Nexus and HTC One X. Corning further notes that the glass could be used in flexible solar cells and lighting. Spinning possible uses out further, we could see the glass used to make e-books into a physical manifestation of their pulpy predecessors—books with glass pages instead of paper ones. In photos, Willow Glass appears pliable enough that it can roll into a two-inch radius, and the PDF fact sheet shows that the 0.1mm thick Willow Glass can bend to a 5cm radius before reaching significant bend stress.

 

from Ars Technica

From Engadget: Copper-nickel nanowires from Duke University could make ubiquitous printable circuits

Nanowires

Nanowires, although they’re building steam, still have to overcome the not-so-small problem of cost — they often have to use indium tin oxide that’s not just expensive, but fragile. Duke University has developed copper-nanowire films that could remedy this in style. The choice of material is both a hundred times less expensive to make than indium and is much more durable. It’s flexible, too: if layered on as a coating, the nanowires would make for considerably more viable wearable electronics that won’t snap under heavy stress. The catch, as you might suspect, stems from the copper itself, which doesn’t conduct as much electricity as indium. The nickel will keep your copper electronics from oxidizing faster than the Statue of Liberty, however. Any practical use could be years away, but further successes from Duke could quickly see printable electronics hit the mainstream power and power our dreams of flexible displays.

from Engadget

From Ars Technica: Organic hydrogel outperforms typical carbon supercapacitors

Hydrogels come in a variety of forms, based on the materials that are mixed with water.

Supercapacitors complement batteries in energy storage and delivery schemes both large and small, as they can provide quick bursts of power. They already help Honda’s fuel cell vehicle FCX accelerate. But supercapacitors hold less energy per volume than a typical battery, so they have limited storage capacity.

Changing the electrode material can boost the capacitance, thus improving the energy density. Yi Cui and Zhenan Bao of Stanford University have made a hydrogel (water-based gel) using a conducting polymer. When used as electrodes in a supercapacitor, the new material has a capacitance about three times greater than a typical carbon supercapacitor. It’s also cheap to build and operate.

Typical supercapacitors are made from two closely spaced, porous carbon electrodes that charge and discharge quickly. Negative ions from the electrolyte collect inside the pores in the positive electrode, while positive ions gather in the negative electrode. That ion separation stores energy as a potential difference between the two electrodes.

from Ars Technica

From Engadget: LG Display debuts five-inch Retina Display killer with 1080p HD resolution and 440ppi pixel density

LG Display 1080p cellphone display

Smartphone displays are becoming larger in size, and along with that, we’re seeing a nice trend that’s bringing greater pixel density. While LG Display’s newly-announced 1080p HD mobile display isn’t the most pixel dense that we’ve seen — a distinction that belongs to Toshiba — the five-inch panel is more appropriate for consumer applications and boasts an impressive pixel density of 440ppi. Its 16:9 aspect ratio was designed with HD content in mind, and the LCD technology isn’t anything to sneeze at, either: it’s a variant of IPS known as Advanced High Performance In-Plane Switching (AH-IPS), which is said to boast wide viewing angles, fast response times and improved brightness efficiency. Best yet, it seems that consumers won’t have long to wait before the panel works its way into consumer technology — the five-inch HD display is set for availability during the second-half of this year. To learn more of the Retina Display-shattering deets, you’ll find the full PR after the break.

 

from Engadget