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Nanosensors

Nanosensors. Vijay Rajesh Ammanamanchi. Outline. Introduction Possibilities Nanosensor Technology Applications Realities Conclusion. Introduction. Sensors operating on the scale of atoms and molecules Smaller size, lower weight, modest power requirements Data storage systems.

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Nanosensors

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  1. Nanosensors Vijay Rajesh Ammanamanchi

  2. Outline • Introduction • Possibilities • Nanosensor Technology • Applications • Realities • Conclusion

  3. Introduction • Sensors operating on the scale of atoms and molecules • Smaller size, lower weight, modest power requirements • Data storage systems

  4. Possibilities • Silver and gold nanoparticles • CNT • Computational Design

  5. Nanosensor Technology • Medical Nanorobots • Three operation levels 1.Internal nanorobot states 2.Local and global somatic states 3.Extra somatic states

  6. Contd.. • Communications Requirements Coordinate complex, large scale cooperative activities Pass along relevant sensory, messaging, navigational, and other operational data Monitor collective task progress

  7. Contd.. • Outmessaging to Patient or User Generating an artificial sensory stimulus Direct stimulation of the receptor in the absence of actual sensory stimulus Triggering artificial action potential in the afferent nerves that carry information from the sensor to the CNS

  8. Applications • Physical Sensors World’s smallest balance

  9. Contd.. • Chemical sensors Ionization detector Wireless sensor network

  10. Contd.. • Biosensors Detection of complex molecules

  11. Contd.. • Deployable Nanosensors SnifferSTAR a light- weight portable chemical detection system

  12. Contd.. • Nanonose • Nanothermometer • NanoParticles spy on molecular binding • Gas sensors • Detection of heavy metal ions with a nanocontact sensor

  13. Enhanced resolution scanning

  14. Realities • Usual design problems • Flow control • Risk and Economics

  15. Conclusions The proposed nanotechnology could allow the development of a new generation of integrated self contained nanofunctional devices incorporating multiple end-point sensing elements,optical quantum detectors and integrated electro-optic molecular switching capability. The obvious challenges are reducing the cost of materials and devices, improving reliability and packing the devices into useful products.

  16. References • http://sensorsmag.com/articles/article_index/ • http://www.nanosensors.com/supersharpsiliconsensors.html • http://www.nature.com/nature/links/030710/030710-7.html • http://www.nanomedicine.com/NMI/ • http://physicsweb.org/article/news/7/10/7 • http://www.foresight.org/Conferences/MNT05/Abstracts/Brenabst.html • http://www.news-gazette.com/story.cfm?Number=14625

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