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Transient electronics 1

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environmentally safe, electronic circuit which disappear when no longer needed

Publié dans : Technologie, Business
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Transient electronics 1

  1. 1. Transient Electronics
  2. 2. OVER VIEW •WHAT is Transient Electronics? •HOW are Transient Electronics made •HOW can Transient Electronics b used •WHERE can we use such Electronics? •Interviews •Conclusions
  3. 3. •Transient devices are enviromental friendly and bio degradasble • they have promising applications as bioreabsorbable medical implants, degradable environmental monitors, compostable consumer devices and others.
  4. 4. • nanomembranes are thin enough to dissolve in a few days or weeks, depending on their thickness, in only a few droplets of water. •Yet they are thick enough to enable high-quality semiconductor devices, such as transistors, diodes and others. • The devices are encapsulated in layers of silk, collected from silkworm cocoons, dissolved and recrystallized. • By carefully controlling the crystal structure of the silk, the researchers can control the dissolution rate
  5. 5. What does magnesium replace in the circuit? Copper or aluminum — it is the conductor. Its conductivity is not quite as good as copper's, so you take a slight hit there, but it's water-soluble. It is also a common ingredient in multivitamin tablets, so it's another type of material that's good for circuits and probably not bad for the body.
  6. 6. Three application areas appear particularly promising. • First are medical implants that perform important diagnostic or therapeutic functions for a useful amount of time and then simply dissolve and reabsorb in the body.
  7. 7. d WHAT do these circuits do? •These circuits are designed to mitigate the effects of surgical site infections •to treat them with transient electronics in the form of a kind of appliqué that goes into the body at the site of the surgery just before the patient is sewn up. •It heats the site of the surgery about 5 degrees centigrade — a change in temperature that is sufficient to kill bacteria
  8. 8. •Once the wound is healed the circuit reabsorbs in the body as it dissolves in the bio fluids. •The circuits gets power wirelessly. device has a special antenna built into it, and we can expose it to radio-frequency radiation from an external source through the skin. That energy can power the heater device.
  9. 9. • Second are environmental monitors, such as wireless sensors that are dispersed after a chemical spill, that degrade over time to eliminate any ecological impact. •Third are consumer electronic systems or sub- components that are compostable, to reduce electronic waste streams generated by devices that are frequently upgraded, such as cellphones or other portable devices
  10. 10. John Rogers, the University of Illinois at Urbana-Champaign professor project head: it’s a new concept, so there are lots of opportunities, many of which we probably have not even identified yet. These findings open up entirely new areas of application, and associated directions for research in electronics.”
  11. 11. • Transient electronics offer robust performance comparable to current devices but they will fully reabsorb into their environment at a prescribed time ranging from minutes to years, depending on the application. •devices that could change the way we think of our gadgets, as well as introduce new capabilities for medical implants and even spy gear.
  12. 12. ANY QUERIES.... .
  13. 13. THANK YOU