Nanosensors
Vijay Rajesh Ammanamanchi
Outline
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Introduction
Possibilities
Nanosensor Technology
Applications
Realities
Conclusion
Introduction
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Sensors operating on the scale of atoms
and molecules
Smaller size, lower weight, modest
power requirements
Data storage systems
Possibilities
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Silver and gold
nanoparticles
CNT
Computational
Design
Nanosensor Technology
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Medical Nanorobots
Three operation levels
1.Internal nanorobot states
2.Local and global somatic states
3.Extra somatic states
Contd..
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Communications Requirements
Coordinate complex, large scale cooperative
activities
Pass along relevant sensory, messaging,
navigational, and other operational data
Monitor collective task progress
Contd..
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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
Applications
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Physical Sensors
World’s smallest
balance
Contd..
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Chemical sensors
Ionization detector
Wireless sensor
network
Contd..
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Biosensors
Detection of
complex molecules
Contd..
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Deployable
Nanosensors
SnifferSTAR a lightweight portable
chemical detection
system
Contd..
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Nanonose
Nanothermometer
NanoParticles spy on molecular binding
Gas sensors
Detection of heavy metal ions with a
nanocontact sensor
Enhanced resolution scanning
Realities
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Usual design problems
Flow control
Risk and Economics
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.
References
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http://sensorsmag.com/articles/article_index/
http://www.nanosensors.com/supersharpsiliconsenso
rs.html
http://www.nature.com/nature/links/030710/0307107.html
http://www.nanomedicine.com/NMI/
http://physicsweb.org/article/news/7/10/7
http://www.foresight.org/Conferences/MNT05/Abstra
cts/Brenabst.html
http://www.newsgazette.com/story.cfm?Number=14625