UC-Berkeley Users Andrea Pickel and Prof. Chris Dames (along with Ayelet, Emory, and Jim) have published their research on upconverting nanoparticle thermometers in Nature Communications. We sort out the age-old question of whether the lasers used to excite upconverting nanoparticle thermometers change their temperature (***see spoiler below!).  Check the paper out here: https://doi.org/10.1038/s41467-018-07361-0