Sensor Detects Stress & Energy Levels

A small, flexible sensor has been developed that can analyze perspiration to assess a person’s level of stress and overall energy. Using a combination of nanotechnology and expertise developed through jet engine research, the wireless device – which resembles a nicotine patch – is designed to detect early signs of anxiety and fatigue non-invasively and continuously.

Receptors inside the sensor are responsive to two target biomarkers. Orexin-A, a hormone released by the hypothalamus, is a key indicator of alertness, while cortisol provides a dynamic indicator of how the body responds to stress. When these compounds come into contact with the nano-sensors, they are converted into electrical signals that can be transmitted to a smartphone or other wireless device.

Sweat is directed precisely to the sensors using microfluidics technology that was developed to improve the efficiency and airflow of airplane engines. This results in greater control and more accurate measurements.

The new technology will have broad applications for civilian and military use including monitoring of physical and mental fatigue in pilots, air traffic controllers, fire fighters and heavy equipment operators. The sensors could also eventually be adapted to measure other electrolytes and metabolites associated with specific diseases.