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Mars Base

All-carbon-nanotube transistor can be crumpled like a piece of paper - 0 views

www.physorg.com/...stor-crumpled-piece-paper.html

scibyte36 transistor nanotube

shared by Mars Base on 03 Mar 12 - No Cached
  • Thanks to the flexible yet robust properties of carbon nanotubes, researchers have previously fabricated transistors that can be rolled, folded, and stretched
  • Japan has made an all-carbon-nanotube transistor that can be crumpled like a piece of paper without degradation of its electrical properties
  • the most bendable reported to date that doesn’t experience a loss in performance
  • ...2 more annotations...
  • researchers, Shinya Aikawa and coauthors from the University of Tokyo and the Tokyo University of Science
  • could lead to active electronic devices that are applied like a sticker or an adhesive bandage, as well as to wearable electronics.”
Mars Base

Ultrathin flexible brain implant offers unique look at seizures - 0 views

medicalxpress.com/...ible-brain-implant-unique.html

scibyte21

shared by Mars Base on 14 Nov 11 - No Cached
  • Researchers funded by the National Institutes of Health have developed a flexible brain implant that could one day be used to treat epileptic seizures
  • a type of electrode array that conforms to the brain's surface – to take an unprecedented look at the brain activity underlying seizures
  • Someday, these flexible arrays could be used to pinpoint where seizures start in the brain and perhaps to shut them down
  • ...11 more annotations...
  • These flexible electrode arrays could significantly expand surgical options for patients with drug-resistant epilepsy
  • In an animal model, the researchers saw spiral waves of brain activity not previously observed during a seizure
  • Similar waves are known to ripple through cardiac muscle during a type of life-threatening heart rhythm called ventricular fibrillation.
  • A stimulating electrode array might one day be designed to suppress seizure activity, working like a pacemaker for the brain
  • The brain contains billions of interconnected neurons that normally transmit electrical pulses
  • During a seizure, these pulses occur in abnormal, synchronized, rapid-fire bursts that can cause convulsions, loss of consciousness and other symptoms
  • is made of a pliable material that is only about one quarter the thickness of a human hair
  • It contains 720 silicon nanomembrane transistors in a multiplexed 360-channel array, which allow for minimal wiring and dense packing of the electrodes
  • The flexibility of the array allows it to conform to the brain's complex shape, even reaching into grooves that are inaccessible to conventional arrays
  • the array could be rolled into a tube and delivered into the brain through a small hole rather than by opening the skull
  • The researchers tested the flexible array on cats. Although mice and rats are used for most neuroscience research, cats have larger brains that are anatomically more like the human brain, with simplified folds and grooves
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