Showing posts with label Miscellaneous. Show all posts
Showing posts with label Miscellaneous. Show all posts

Thursday, 25 December 2008

Displays that yields to the touch...

Hewlett-Packard and the Flexible Display Center (FDC) at Arizona State University announced the purported first prototype of what they call affordable, unbreakable flexible electronic displays.


For the uninitiated, a flexible display is a paperlike computer display that's made almost entirely out of plastic. According to HP, these displays consume less power than traditional computer displays and of course are more easily portable. They are also said to use up to 90 percent fewer materials than traditional displays by volume.


The press release states that "mass production of such displays can enable production of notebook computers, smart phones and other electronic devices at much lower costs since the display is one of the more costly components," but we'll have to wait and see if costs on these devices are actually lowered because of this technology.

The displays were created via a process called self-aligned imprint lithography (SAIL). SAIL purportedly enables thin film transistors to be fabricated on a flexible, plastic material in a roll-to-roll manufacturing process. According to HP, this allows for a more low-cost continuous production, rather than batch sheet-to-sheet production.

To create the display, FDC produces semiconductor materials and metals on flexible polyethylene naphthalate (PEN) substrates. Using the SAIL process HP then patterns the substrates and then integrates E Ink's Vizplex imaging film to produce the display on plastic.

Wednesday, 4 June 2008

Colourfull Water Ball Ripples


Water Ball Ripples



The Ripple faucet creates a new, fun way to interact with water. Drawing inspiration from surface ripples, the faucet creates a strong visual relationship between the two. On top of the frosted ripple surface sits a metal ball. An array of electromagnetic sensors detects that ball’s position. Moving the ball in or out from the center controls water pressure. Moving it around controls temperature.


The surface glows red or blue to denote how hot or cold it is. The two separate channels combine the hot and cold water to get the perfect mix. Don’t worry about scalding yourself tho. The water in the hot water channel isn’t actually hot until it’s ready to be mixed via flash heating.





Normal





Cold




Hot



Source:http://www.yankodesign.com

Thursday, 29 May 2008

DIGITAL POT

Plants Tell You What They Want



This is Digital Pot a concept from designer Junyi Heo that's a 21st Century plant pot. It's filled with sensors measuring temperature, soil moisture and the like. It lets you know the results on a display with a mix of emoticons and symbols, so your plants can tell you what they want (and no: they probably don't want you to smoke them.)







Growing plants would be a lot easier if plants could express what it is they need from you. Fret not because that’s what the Pet Plant by Junyi Heo does. The very sleek looking pot measures soil conditions, temperature, humidity, and water - calculates those variables based on the need of said plant, and expresses its condition via a series of pictograms on an LCD display.




It’s also smart enough to know if you’ve over watered and will systematically drain itself into a water vessel. All this high tech goodness does mean it needs power but a simple USB interface does double duty by charging and transmitting pertinent information to and from computer software.



It's even clever enough to drain itself if you're a chronic over-waterer and charges via USB— also sending its data to your PC for your perusal. Just a concept, but a rather cute one, don't you think?

Source: www.yankodesign.com

Wednesday, 21 May 2008

Protective Force Field for Astronauts

Researchers are reviving an old but wild idea to protect astronauts from space radiation.
Opposite charges attract. Like charges repel. It's the first lesson of electromagnetism and, someday, it could save the lives of astronauts.


Space beyond low-Earth orbit is awash with intense radiation from the Sun and from deep galactic sources such as supernovas. Astronauts en route to the Moon and Mars are going to be exposed to this radiation, increasing their risk of getting cancer and other maladies. Finding a good shield is important.
Right: Supernovas produce dangerous radiation.

The most common way to deal with radiation is simply to physically block it, as the thick concrete around a nuclear reactor does. But making spaceships from concrete is not an option. (Interestingly, it might be possible to build a moonbase from a concrete mixture of moondust and water, if water can be found on the Moon, but that's another story)
NASA scientists are investigating many radiation-blocking materials such as aluminum, advanced plastics and liquid hydrogen.Each has its own advantages and disadvantages.
Those are all physical solutions. There is another possibility, one with no physical substance but plenty of shielding power: a force field.
Like charges repel. So why not protect astronauts by surrounding them with a powerful electric field that has the same charge as the incoming radiation, thus deflecting the radiation away?
Many experts are skeptical that electric fields can be made to protect astronauts. But Charles Buhler and John Lane, both scientists with ASRC Aerospace Corporation at NASA's Kennedy Space Center, believe it can be done. They've received support from the NASA Institute for Advanced Concepts, whose job is to fund studies of far-out ideas, to investigate the possibility of electric shields for lunar bases.



Above: Artist’s concept of an electrostatic radiation shield, consisting of positively charged inner spheres and negatively charged outer spheres. The screen net is connected to ground.
Image courtesy ASRC Aerospace.

"Using electric fields to repel radiation was one of the first ideas back in the 1950s, when scientists started to look at the problem of protecting astronauts from radiation," Buhler says. "They quickly dropped the idea, though, because it seemed like the high voltages needed and the awkward designs that they thought would be necessary (for example, putting the astronauts inside two concentric metal spheres) would make such an electric shield impractical."
Buhler and Lane's approach is different. In their concept, a lunar base would have a half dozen or so inflatable, conductive spheres about 5 meters across mounted above the base. The spheres would then be charged up to a very high static-electrical potential: 100 megavolts or more. This voltage is very large but because there would be very little current flowing (the charge would sit statically on the spheres), not much power would be needed to maintain the charge.

The spheres would be made of a thin, strong fabric (such as Vectran, which was used for the landing balloons that cushioned the impact for the Mars Exploration Rovers) and coated with a very thin layer of a conductor such as gold. The fabric spheres could be folded up for transport and then inflated by simply loading them with an electric charge; the like charges of the electrons in the gold layer repel each other and force the sphere to expand outward.

Basic Idea behind this is placing the spheres far overhead would reduce the danger of astronauts touching them. By carefully choosing the arrangement of the spheres, scientists can maximize their effectiveness at repelling radiation while minimizing their impact on astronauts and equipment at the ground. In some designs, in fact, the net electric field at ground level is zero, thus alleviating any potential health risks from these strong electric fields.


Buhler and Lane are still searching for the best arrangement: Part of the challenge is that radiation comes as both positively and negatively charged particles. The spheres must be arranged so that the electric field is, say, negative far above the base (to repel negative particles) and positive closer to the ground (to repel the positive particles). "We've already simulated three geometries that might work," says Buhler.
It sounds wonderful, but there are many scientific and engineering problems yet to be solved. For example, skeptics note that an electrostatic shield on the Moon is susceptible to being short circuited by floating moondust, which is itself charged by solar ultraviolet radiation. Solar wind blowing across the shield can cause problems, too. Electrons and protons in the wind could become trapped by the maze of forces that make up the shield, leading to strong and unintended electrical currents right above the heads of the astronauts.

The research is still preliminary, Buhler stresses. Moondust, solar wind and other problems are still being investigated. It may be that a different kind of shield would work better, for instance, a superconducting magnetic field. These wild ideas have yet to sort themselves out.

But, who knows, perhaps one day astronauts on the Moon and Mars will work safely, protected by a simple principle of electromagnetism even a child can understand.