Events
Optical thermometry based on inorganic micro and nanocrystals doped with lanthanide ions
25 April 2022
Eastern Time (US & Canada) (UTC -05:00)
Temperature is a physical quantity that measures the internal thermal state of a medium. This concept has surpassed the boundaries of physical science long ago, becoming an important parameter for different fields of knowledge and technological development. In our daily activities, for instance, it is necessary to measure temperature to cook and to evaluate our health and the weather. The accurate and precise measurement of temperature is essential for a wide range of areas from basic science to industrial processes. With the advance of technology, it became necessary to develop temperature sensors with spatial resolution at micro and nanometric scales. Amongst the proposed methods, optical thermometry based on the luminescence of inorganic micro and nanocrystals doped with lanthanide ions became one of the most promising as it can provide measurements of temperature with high spatial resolution, accuracy, and precision. In this presentation, I will give an overview about luminescent thermometry and present some of the strategies we have proposed to improve the performance of these devices.
About Our Speaker: Márcio Alencar, Universidade Federal de Sergipe
Graduated in Electronic Engineering at the Universidade Federal de Pernambuco (UFPE), Brazil (1998). Received a PhD in Physics at UFPE for his research on nonlinear optical effects of organic liquids and nanostructured materials, supervised by Prof. Dr. Cid Bartolomeu de Araújo (2004). Post-Doc in the group of Jandir M. Hickmann at Universidade Federal de Alagoas (UFAL), in Brazil (2005). In 2006, became a professor at the Physics Institute of UFAL and joined the research staff of the Optics and Materials Group (OPTMA). In 2013, moved to Universidade Federal de Sergipe (UFS), Brazil, as a professor at the Physics Department, and became the co-leader of the newly founded Optics Group and the advisor of the local OSA Student Chapter. Published over than 40 papers in referred journals and more than 70 papers presented in scientific conferences. He has more than 700 citations and 13 H-factor. His research interest focus on several aspects of nonlinear optics, in particular, optical characterization of organic materials, glasses and nanomaterials, rare-earth spectroscopy, transverse and nonlocal nonlinear effects, random lasers, photonic crystals, among others (complete and detailed professional information about Márcio A. R. C. Alencar can be found in http://lattes.cnpq.br/8029022476354938). He was the leader of 12 research projects supported by Brazilian agencies. He supervised five Masters’ works (in Physics) and two PhD thesis (in Physics and Materials Science), and acted as a co-supervisor of four Masters dissertations (in Physics) and three PhD thesis (02 in Physics and one in Materials Science). His teaching experience includes from basic disciplines of Physics (theoretical and experimental) to advanced pos-graduation courses (Quantum Electronics and Nonlinear Optics). Currently, he is the supervisor of four PhD, one MSc and two undergrad students in Physics. He is member of the following scientific societies: OPTICA, SPIE and Brazilian Physics Society.
