Biodegradable electronics

Biodegradable electronics are electronic circuits and devices with a limited lifetime owing to their tendency to biodegrade. Such devices are proposed to represent useful medical implant,[1][2] and temporary communication sensors.

Organic electronic devices as compostable material platforms have been fabricated on aluminum foil[3] and paper[4] to accommodate these expanded functionalities. In one embodiment of this idea, paper films were utilized as a combination substrate and gate dielectric for use with pentacene-based active layers.[4] This idea was expanded upon to create complete circuits using foldable paper-based substrates.

Silk coatings could underpin an electronic devices because it melts away when the device is no longer needed. One test device, a heating circuit powered by beaming radio waves at it, was implanted under the skin of a rat with a wound. After the wound had healed, the implant simply melts away. The US military research agency DARPA funded research on building a tiny dissolving camera with this silk coating for use as a disposable spy camera.[5]

References

  1. ↑ Kim DH, Kim YS, Amsden J, Panilaitis B, Kaplan DL, Omenetto FG, Zakin MR, and Rogers JA (2009). "Silicon electronics on silk as a path to bioresorbable, implantable devices". Appl. Phys. Lett. 95: 133701. doi:10.1063/1.3274132.
  2. ↑ Rogers, J. A.; et al. (2011). "Epidermal Electronics". Science 333 (6044): 838–843. doi:10.1126/science.1206157. PMID 21836009.
  3. ↑ Yoon M-H, Yan H, Facchetti A, Marks TJ (30 June 2005). "Low-Voltage Organic Field-Effect Transistors and Inverters Enabled by Ultrathin Cross-Linked Polymers as Gate Dielectrics". J Am Chem Soc 127 (29): 10388–95. doi:10.1021/ja052488f. PMID 16028951.
  4. 1 2 Yong-Hoon K, Dae-Gyu M, Jeong-In H (2004). "Organic TFT array on a paper substrate". IEEE Elec Dev Lett 25 (10): 702–4. doi:10.1109/LED.2004.836502.
  5. ↑ "Silk holds the key to devices that dissolve after use".
This article is issued from Wikipedia - version of the Saturday, April 04, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.