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Credits: Shelter Productions (photo); Kursten Bracchi (prop styling); Anthony Isambert for Halley Resources (grooming)
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The World's Smallest Radio
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Search and Rescue Insect-size robots equipped with nano gas sensors and miniaturized cameras alert rescuers by a nanoradio signal about the presence of toxic carbon monoxide and the location of survivors in a collapsed mine. George Retseck
Drug Delivery Drug-containing capsules equipped with nanoradios home to cancer cells and release their payloads on receipt of a signal from outside the patient’s body. George Retseck
Demodulation The vibrating nanotube alters the current in a way that retains just the audio frequencies of the radio wave. George Retseck
Amplification A large flow of electrons from the nanotube tip amplifies the signal in the presence of a small voltage from a battery. George Retseck
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Tuning Strength of an electric field can be adjusted to let the nanotube be tensioned like a guitar string so that it vibrates only at the proper frequency. George Retseck
Reception Antenna of nanodimensions detects a radio wave by vibrating at the same frequency as the rapidly oscillating signal. George Retseck
