Question

how nanotechnology is useful in the field of security​

Answer 1

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Nanomaterials could be used to create highly sensitive sensors capable of detecting hazardous materials in the air. For example, carbon-based nanotubes are relatively inexpensive and consume minimal power. Other areas of nanotechnology pertinent to homeland security are emergency responder devices.

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Answer 2

Develop covert nanomaterials for the tracking, labeling, and authentication of high value items

Nanosensors with the ability to detect toxins or other harmful threats at the molecular or even atomic level

Nanoelectronics and nanocomputing to integrate transistor-like nanoscale devices into system architecture to provide substantial advantages over current technologies

Nanotechnology applications for the protection of the soldier in the field