Listening to the whispers of individual cells

For the cells in our bodies to function as a unit, they must communicate with one another constantly. They secrete signalling molecules—ions, proteins and nucleic acids—that are picked up by adjacent cells, which in turn ...

How to explore inaccessible places by swarms of sensors

Since the dawn of humankind, exploration of certain places, ranging from the depths of the oceans to the edges of the universe, has led to numerous discoveries. However, there are also several environments that need to be ...

Sensor awakens only in the presence of a signal of interest

Here's your task. Build a tiny sensor that detects a signature of infrared (IR) wavelengths characteristic of a hot tailpipe, a wood fire, or perhaps even a human being. Design the sensor so that it can remain dormant and ...

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