The research work called “Enhanced Performance Nanostructured Thermoelectric Converter for Self-Powering Health Sensors” was selected by the international organism Advances in Engineering as “Outstanding Research” for contributing to excellence in engineering and scientific research. Likewise, due to the quality of the study carried out, the results were recently published in the reputable journal Nano-Energy which presents an impact factor of 16.602.
Nano Energy 74 (August-2020) 104854, https://www.sciencedirect.com/science/article/pii/S2211285520304110
The evaluation committee of Advances in Engineering identified the proposal of Dr. Jaime Alvarez, in co-authorship with the MC. Parás Hernández, Dr. Fabián Mijangos and Dra. M.A. Cardona Castro through the use of the mechanism called energy filtering as a strategy for the selective transfer of charge and heat carriers which results in an effective tool for the development of efficient thermoelectric materials in the harvesting of residual thermal energy from relatively low temperature gradients. According to Dr. Alvarez, in the present study, by covering the grains through the segregation of graphene nanoplatelets in the grain boundary region, it has been possible to create extended energy barriers along polycrystals, which basically behaves like a “sieve” for energy carriers. Likewise, he pointed out that based on this material, a thermoelectric converter has been developed which can efficiently collect the heat generated from the temperature gradients naturally present in the human body, and with it; for example, powering low-power health monitoring devices such as heart rate and body temperature sensors, thus eliminating the need for batteries. So, undoubtedly, this research shows a new avenue towards the development of efficient materials for residual thermal energy recycling, as well as simultaneously demonstrating the potential of nanoscience in the innovation of technology for the implementation of self-powered devices.