‘Smart pill’ technology raises legal and ethical questions

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 The idea of putting little machines into the human body makes some uncomfortable.

Mary Ellen Snodgrass swallows a computer chip every morning. It’s embedded in one of her pills and roughly the size of a grain of sand. When it hits her stomach, it transmits a signal to her tablet computer indicating that she has successfully taken her heart and thyroid medications.

 

 

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Nanoscale Sensors Powered By Stress

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This scanning-electron-microscope image shows a stress-triggered transistor in cross section.

Nanoscale sensors have many potential applications, from detecting disease molecules in blood to sensing sound within an artificial ear. But nanosensors typically have to be integrated with bulky power sources and integrated circuits. Now researchers at Georgia Tech have demonstrated a nanoscale sensor that doesn’t need these other parts.

 

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