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GREMAN is a research laboratory on materials, microelectronics, acoustics and nanotechnology of the University of Tours, CNRS and INSA Centre Val de Loire created January 1st 2012 by the merging of several groups located in Tours and Blois, France. Its expertise covers the value chain from materials science up to devices (components, sensors, transducers ...) and their integration. Fields such as electrical energy efficiency, power microelectronics and the use of ultrasonic waves are particularly targeted, for applications in industry, health and nomadic apparatus.

The activities of GREMAN are focused on four priority topics :

  • Functional oxides for energy efficiency: combinatory synthesis and nanostructuration.
  • Magnetic and optical properties of ferroic and electronic correlation materials.
  • Ultrasonic instrumentation and characterisation.
  • Energy, component, systems, microelectronics.









Diffraction optics Micromachining Time-dependent density functional theory Electron microscopy Colossal permittivity Hyperbolic law Electrical resistivity Elasticity Modeling Energy harvesting Nanogénérateurs piézoélectriques Piezoelectric Spark plasma sintering Sputtering Piezoelectric materials Electronic structure Raman scattering Electrochemical etching Thin film deposition Oxides ZnO Multiferroics Chemical vapor deposition Phase transitions Thin film growth Numerical modeling Hydrothermal synthesis Attractiveness of education Nanogenerator Resistive switching Microwave frequency Condensed matter properties Porous silicon Phononic crystals Dielectric properties High pressure Thermoelectrics Finite element method Electrodes Demand side management Higher education Composites Thermal conductivity Lamb waves Piezoelectric nanogenerators Raman spectroscopy Crystal growth Mesoporous silicon AC switch Strain Organic solar cell Capacitance Thin films Transducers Silicon devices ZnO nanowires CCTO X-ray diffraction 3C–SiC Silicon Piezoelectricity Layered compounds Etching Domain walls Light diffraction Zinc oxide COVID-19 Crystal structure Crystallography Ultrasons Ferroelectricity Imaging Piezoelectric properties Porous materials Electrical properties Ultrasound Doping Smart grid Acoustics Epitaxy Nanowires Récupération d'énergie Modélisation Magnetization dynamics Atomic force microscopy Nanogenerators Ferroelectrics Disperse systems Mechanical properties Individual housing Ceramics LPCVD CMUT Reliability Precipitation Ultrasonic transducer Piézoélectricité Nanoparticles Materials Characterization






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