New nanoscale force sensors made from luminescent nanocrystals

In a groundbreaking study, researchers have created new nanoscale force sensors using luminescent nanocrystals. These “all-optical” sensors change their intensity and color in response to mechanical stress and can be fully probed with light, eliminating the need for wires or physical connections. This innovation is set to greatly improve the sensitivity and dynamic range of optical force sensors, with potential applications in robotics, cellular biophysics, medicine, and space travel.