Focus on a laboratory: GREMAN

The GREMAN Laboratory is a joint research unit under the auspices of CNRS, the University of Tours, and INSA-Centre Val de Loire.

Since its creation in 2012, GREMAN has been primarily focused on new materials, components, and systems for electronics, as well as the optimization of energy efficiency. This includes the development of systems for the recovery, conversion, and management of electrical energy, as well as their miniaturization and reduction of power consumption. The research spans various application sectors, ranging from portable devices to renewable energy production, and extends to industrial, medical, and domestic devices.

In addition, a portion of the research activity is more upstream, such as the study of the broad-band optical conductivity of highly correlated materials, numerical simulation, or the synthesis of new materials with remarkable properties. This is aimed at understanding fundamental phenomena, mastering functional materials, and exploring new functionalities, some of which may still be undiscovered.

All these application domains not only require increasingly efficient functional materials but also new technologies, particularly at the micro/nano scales, for their implementation. GREMAN's actions cover a range from very low powers (nW) to a few kW at most. They mainly concern electrical energy but also mechanical energy through ultrasonic applications.

To achieve these objectives, it is essential to closely collaborate with scientists from various disciplines: chemists and condensed matter physicists, electronic engineers, acousticians, and technologists. It is also necessary to probe matter under extreme conditions, either for the future use of materials and components, to understand their functioning and properties, or to design new multifunctional multimatériaux. The themes of MATEX are thus in complete alignment with many topics addressed at GREMAN, such as studies of interface and surface treatments, the sintering of dielectric, piezoelectric, or thermoelectric ceramics by Spark Plasma Sintering, crystal growth of single crystals in an image furnace, and the synthesis and applications of porous silicon, to name just a few.

GREMAN in a few figures:

GREMAN comprises 52 Researchers and Teacher-Researchers, 15 Administrative and Technical Staff, and each year it welcomes 30 doctoral students and approximately 20 postdoctoral researchers.

Research contracts and international visibility:

  • Over 90 publications per year, two-thirds of which are in international journals.
  • An average of 2 to 3 patents filed each year.
  • An average of 8 defended theses per year.
  • 10 to 15 research contracts per year (European, National, Regional, Industrial), representing between 2 and 3 million euros annually.

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