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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.









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






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