biostudies-literatureUnknown7Brites CDSLuminescent nanothermometry uses the light emission from nanostructures for temperature measuring. Non-contact temperature readout opens new possibilities of tracking thermal flows at the sub-micrometer spatial scale, that are altering our understanding of heat-transfer phenomena occurring at living cells, micro electromagnetic machines or integrated electronic circuits, bringing also challenges of calibrating the luminescent nanoparticles for covering diverse temperature ranges. In this work, we report self-calibrated double luminescent thermometers, embedding in a poly(methyl methacrylate) film Er³⁺- and Tm³⁺-doped upconverting nanoparticles. The Er³⁺-based primary thermometer uses the ratio between the integrated intensities of the ² H 11 / 2Frontiers in chemistry267https://www.ebi.ac.uk/biostudies/studies/S-EPMC6482206biostudies-literatureSelf-Calibrated Double Luminescent Thermometers Through Upconverting Nanoparticles.PMC6482206Carlos LDMartinez EDUrbano RRRettori CBrites CDSfalseSelf-Calibrated Double Luminescent Thermometers Through Upconverting Nanoparticles.Luminescent nanothermometry uses the light emission from nanostructures for temperature measuring. Non-contact temperature readout opens new possibilities of tracking thermal flows at the sub-micrometer spatial scale, that are altering our understanding of heat-transfer phenomena occurring at living cells, micro electromagnetic machines or integrated electronic circuits, bringing also challenges of calibrating the luminescent nanoparticles for covering diverse temperature ranges. In this work, we report self-calibrated double luminescent thermometers, embedding in a poly(methyl methacrylate) film Er³⁺- and Tm³⁺-doped upconverting nanoparticles. The Er³⁺-based primary thermometer uses the ratio between the integrated intensities of the ² H 11 / 22019-01-01T00:00:00Z20192025-04-20T03:25:20.905Z2019-06-06T23:07:52ZS-EPMC64822063105814210.3389/fchem.2019.00267