Events / Courses, Seminars & Conferences

NANO-ENGINEERING THERMOELECTRIC AND THE LATEST DEVELOPMENTS IN NANOPOROUS ALUMINA TEMPLATES: FROM SWORDS TO BUTTERFLIES

SEMINARIOS INTERNACIONALES DE FRONTERAS DE LA CIENCIA DE MATERIALES

Miércoles, 21/03/2018, 13:00 h

MARISOL MARTÍN GONZÁLEZ

Instituto de Micro y Nanotecnología, CSIC, España
RESUMEN

In the present talk, I will discuss the recent advancement that we have done in the field of thermoelectricity for energy harvesting and in the preparation of porous alumina templates for surface nanostructuration and for obtaining 3D networks of nanowires.

Thermoelectric materials have been a focus of research for centuries, because the thermoelectric effects allow direct conversion between thermal and electrical energy, therefore providing an alternative for power generation and refrigeration. In the recent years, there was a renewed interest since those materials can be used to generate electricity using the gradient of temperature between the cars exhaust pipe and the atmosphere (so, reducing the CO2 total emission of the vehicles).

One of the possible ways to increase the efficiency of these materials is through nanostructuration since the introduction of interfaces and/or scattering sites acts as a phonon scattering centers. In the present talk, I will approach to different ways in which nanostructuration is helping to increase the efficiency of materials like Skutterudites, Si-Ge alloys or selenides prepared by different techniques such as ball milling and spark plasma sintering –SPS-, or Sputtering, or electrodeposition. And, I will correlate the nanostructure with their thermoelectric properties on the different systems. I will talk about the effects of topological insulator observed in thermoelectricity in Bi2Te3 nanowires. And I will show a prototype prepared in one of the European projects.

I will also address the recent developments on surface nanostructuration and on three-dimensional alumina templates and the preparation of three-dimensional network of nanowires.

Bibliography
Dr. Marisol Martin-Gonzalez is a permanent researcher at the Institute of Microelectronics of Madrid, at the National Research Center of Spain –IMM-CSIC-. She holds a Ph.D. degree since 2000 working on electrodeposition of Hightemperature Superconductors. Afterward, she did her postdoc at Berkeley in thermoelectric nanostructuration by electrochemical techniques. Along the past few years, her research activity y has been focused on nanostructuration of hard drives, spintronic and nanoengineering thermoelectrics. She is the author of more than 100 papers.

Regarding technology transference, she has the copyright of 4 patents and is the co-founder of a spin-off company.

Within FP6, Dr. Marisol Martin-Gonzalez participated actively in HIDEMAR (High-Density magnetic recording) project awarded by the EU commission with DESCARTES research finalist prize in 2005. Dr. Martin-Gonzalez holds an ERC Starting Grant in nano-engineering thermoelectrics that has allowed her to consolidate her research team. Over the last 5 years, the group has managed 7 different projects on the effect of nanostructuration on organic and inorganic thermoelectrics using different fabrication techniques like sputtering, electrodeposition, SPS, etc. For the H2020, she is holding an ERC Proof of concept to commercialized towards a new spin-off some of the results for her ERC Starting grant. Right now, she is heading an interdisciplinary group of postdocs, students, technicians of 10 people. She is an
elected member of the European thermoelectrics Society. And she has been the director of the Sensor and Biosensor Department and Vicedirector of the Institute.