Photon-avalanching all-optical nanosensors of force access previously unreachable environments and could disrupt technologies

https://www.eurekalert.org/news-releases/1069189

"high sensitivity/ spatial resolution, remotely from subsurface/ interfacial sites, large dynamic range... luminescent nanocrystals change intensity/ color when pushed/ pulled... no wires/ connections... 100X better force sensitivity, no rare-earth ions, range of force spans >4 orders magnitude, 10-100X larger... from subcellular to whole-system level... biocompatible, deeply penetrating IR... nanosensors built exploiting photon-avalanching effect within nanocrystals... robotics, cellular biophysics/ medicine, space travel"