The sensor consists of an organic laser deposited on a sheet of rubber.
When the sheet of rubber is stretched by a crack in a structure, the color of the emitted light changes.
The sensor has the potential to help engineers quickly evaluate the structural health of bridges and buildings.
Once fine-tuned, the stretchable laser sensor will allow engineers to stand at a distance from structures while shining ultraviolet light onto the surface of the rubber sensing skin to detect small changes in strain on the sensor.
The sensor is an improvement over traditional sensors, because most sensors currently used only detect damage along a particular line and cannot detect damage between sensors.
The work of Wagner and Goerrn was published last month in Advanced Materials.
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