High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent CoatingsTimothy M. Benseman 1,2,3, Yang Hao 1,2, Vitalii K. Vlasko-Vlasov 1, Ulrich Welp 1, Alexei E. Koshelev 1, Wai-Kwong Kwok 1, Ralu Divan 4, Courtney Keiser 5, Chiharu Watanabe 6, Kazuo Kadowaki 6
1Materials Science Division, Argonne National Laboratory, 2Department of Physics, University of Illinois at Chicago, 3Department of Physics, CUNY Queens College, 4Center for Nanoscale Materials, Argonne National Laboratory, 5Department of Physics, University of Northern Iowa, 6Institute for Materials Science, University of Tsukuba
Europium thenoyltrifluoroacetonate (EuTFC) has an optical luminescence line at 612 nm, whose activation efficiency decreases strongly with temperature. If a sample coated with a thin film of this material is micro-imaged, the 612 nm luminescent response intensity may be converted into a direct map of sample surface temperature.
