Thermometry at the nanoscale
Carlos D. S. Brites Patricia P. Lima, Nuno J. O. Silva, Angel Millan, Vitor S. Amaral, Fernando Palacio and Luıs D. Carlos
Nanoscale, 2012, 4, 4799
First things first… so first few posts in Latest news will briefly show the review articles concerning luminescent thermometers. Today we would like to present to you excellent review paper concerning thermometers at nanoscale. The main goal of this manuscript is the comprehensive studies of different nanothermometers including: infrared thermography, thermoreflectance technique, thermometers based on Raman scattering and transmission electron microscopy, micro-thermocouple, near-field scanning optical microscopy, liquid crystal thermography, scanning thermal microscopy, optical interferometry, and luminescent thermometry. From this comparison it is clearly shown that luminescent thermometers posses unique parameters (high spatial and temperature resolution) making them of special importance for temperature sensing purpose. Moreover the comparison of different luminescent thermometers given in this paper gives insight how strong is the dependence of chemical composition and type of luminescence generation mechanism on sensitivity and usable temperature range of such thermometer. The highest observed sensitivity was found for organic dyes (reaching even 19%/K-1 for Mutant of lacI (Its265)) however due to its temperature stability these thermometers can be applied only in relatively narrow temperature range. The lowest sensitivity was reported for lanthanide doped phosphors. In the other hand these luminescent thermometers can be applied in the highest temperature range. However many research has still to be done in order to improve properties of this kind of thermometers. Presented work gives wide overview of different techniques which can be applied for temperature thermometers. The underline of strong sites and weaknesses of each of these techniques allows for prediction of its potential field of application.