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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.









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






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