Flexible materials technology can simply highlight the next wave of trend in markets, in brilliant form of tattoos and T-shirts. Or the hot new technology could be used for its intended purpose: supervision of medical conditions.
This array of flexible light-emitting diode (LED) uses many already existing materials and techniques to create a patch size Nano and flexible light. A team led by John Rogers has developed the array as a medical device It could be implemented to serve as a reading for monitoring the conditions of the internal organ as oxygenation and blood glucose levels, or it could turn on light-activated medications.
"Applications we are especially interested in include interfaces with the human body", says John Rogers…. For some biological applications, he adds, of a conventional LED brightness, reliable operation and qualities impermeable implementation make it more attractive as an organic LED option. American scientist.
Each individual LED is a square measuring 2.5 microns thick (smaller than the diameter of the nucleus of the cells of your) and 100 microns from each side (the thickness of a layer of paint). Many of these LEDs can be printed together to form an array of light points connected by connective wire swirls that give it more flexibility. The substrate is flexible enough so that it can be stretched and declined up to 75% without losing the function. Researchers have described the technology in the journal Nature Materials.
[Researchers] applicant del on a sheet of aluminum, leaf from a tree and a sheet of paper. they wrapped tables around nylon yarn and he tied in a knot. and they distended LED arrays by inflating or spanning the tip of a pencil or the head of a cotton swab polymer substrate. "Finally just students I tired" to develop new tests for the Leafs light emitting, Rogers said. "There is nothing that we tried that we couldn't do." American scientist.
The tables are made on a semiconductor called gallium arsenide and other materials that are traditionally very fragile, but when the affixed to a table made of plastic, they become flexible. They are then coated with rubber, that makes them waterproof and ready to be implemented. No human being have not yet bright LED tattoos, but the researchers were able to locate the table in a latex glove and also put one under the skin of an animal and other materials, including fabric, paper and aluminium foil.
Brian Derby, a scientist of materials at the University of Manchester, UK, recognizes that development is less scientific breakthrough as a feat of engineering. However, he spotted a disadvantage: use interconnecting wires take mechanical deformation retains the density of small device. "The large spacing LEDs or photo-détecteurs lead to a limited number of applications – no flexible displays, for example,"he said."" [Nature News].
Researchers have planned this concern and saying that arrays can be in each of the other layers to create a more dense patch of light.
Content:
80beats: two new advances Nanotech point the way towards the Nano-electronics
80beats: scientists create "Artificial Skin electronic" mesh Nanowires
80beats: rubbery computer screens can be Bent, folded and even rubbed
Discover: 100 stories of 2008: # 83: Bulletproof is stronger than Kevlar
Discover: The METAMATERIAL revolution: the new science of decisions Anything disappear
All pictures: nature materials / John Rogers
No comments:
Post a Comment