Take for example an airbag, where the (microscale) accelerometer in the airbag’s control unit can trigger the rapid inflation of the (macroscale) airbag when it senses a sudden change in velocity.

The Tech-Air system is similar to car airbag systems in terms of basic premise. One triaxial accelerometer and three gyroscopes communicate with an electronic control unit (ECU) to monitor movement.

As airbag systems continue to evolve, it is clear that airbag protection doesn’t have to be bulky, uncomfortable, or ...