Laser Proximity Sensors use laser beams to detect the presence or absence of objects within a certain range. They are used in security systems, robotics, automation, and industrial processes, where ...

Little Laser Trip Wire circuit presented here can detect movement of people or objects while passing through the laser beam and trigger security alarms as alert signals to those concerned. What is ...

Pump light coupled to the device produced lasing in a microring resonator. The surface of the resonator holds probes (red anchor molecules on the ring) that capture the analytes of interest. The laser ...

Micro-electromechanical systems (MEMS) have proven themselves a billion times over as sensors in smart cars, cell phones and mini insulin pumps, among other things. To make these MEMS even more ...